{"id":1358,"date":"2020-06-16T08:58:12","date_gmt":"2020-06-16T08:58:12","guid":{"rendered":"https:\/\/aluminiumceramicfiber.com\/?p=1358"},"modified":"2026-08-24T03:25:25","modified_gmt":"2026-08-24T03:25:25","slug":"degassing-aluminium","status":"publish","type":"post","link":"https:\/\/www.aluminiumceramicfiber.com\/ar\/degassing-aluminium\/","title":{"rendered":"\u0625\u0632\u0627\u0644\u0629 \u0627\u0644\u063a\u0627\u0632\u0627\u062a \u0645\u0646 \u0627\u0644\u0623\u0644\u0648\u0645\u0646\u064a\u0648\u0645"},"content":{"rendered":"<p class=\"PDq2pG_selectionAnchorContainer\" data-start=\"545\" data-end=\"1088\">Degassing aluminium is an essential molten metal treatment process used to remove dissolved hydrogen from aluminum and aluminum alloys before casting. Since hydrogen is the only gas with significant solubility in liquid aluminum, controlling hydrogen content is critical for preventing porosity defects and improving the mechanical properties of final products. In modern aluminum production, inert gas rotary degassing and online degassing systems are widely applied to achieve efficient hydrogen removal and maintain consistent melt quality.<\/p>\n<p data-start=\"1090\" data-end=\"1477\">During aluminum melting, hydrogen absorption is almost unavoidable. Moisture from raw materials, furnace atmosphere, tools, and refractory materials can react with molten aluminum and introduce hydrogen into the melt. Without proper degassing treatment, excessive dissolved hydrogen may remain trapped during solidification, causing internal pores, reduced strength, and casting defects.<\/p>\n<p data-start=\"1479\" data-end=\"1618\">Therefore, high-quality aluminum production requires not only careful melting control but also effective degassing refining before casting.<\/p>\n<div id=\"attachment_9603\" style=\"width: 444px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-9603\" class=\"wp-image-9603\" src=\"https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/09\/aluminum-degassing.webp\" alt=\"\u0625\u0632\u0627\u0644\u0629 \u0627\u0644\u063a\u0627\u0632\u0627\u062a \u0645\u0646 \u0627\u0644\u0623\u0644\u0648\u0645\u0646\u064a\u0648\u0645\" width=\"434\" height=\"347\" srcset=\"https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/09\/aluminum-degassing.webp 300w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/09\/aluminum-degassing-15x12.webp 15w\" sizes=\"auto, (max-width: 434px) 100vw, 434px\" \/><p id=\"caption-attachment-9603\" class=\"wp-caption-text\">\u0625\u0632\u0627\u0644\u0629 \u0627\u0644\u063a\u0627\u0632\u0627\u062a \u0645\u0646 \u0627\u0644\u0623\u0644\u0648\u0645\u0646\u064a\u0648\u0645<\/p><\/div>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u062c\u062f\u0648\u0644 \u0627\u0644\u0645\u062d\u062a\u0648\u064a\u0627\u062a<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">\u062a\u0628\u062f\u064a\u0644<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.aluminiumceramicfiber.com\/ar\/degassing-aluminium\/#Why_Is_Degassing_Aluminium_Necessary_in_Aluminum_Casting\" >Why Is Degassing Aluminium Necessary in Aluminum Casting?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.aluminiumceramicfiber.com\/ar\/degassing-aluminium\/#Learn_More_About_Our_Degassing_Equipment\" >Learn More About Our Degassing Equipment<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.aluminiumceramicfiber.com\/ar\/degassing-aluminium\/#What_Is_the_Principle_of_Aluminium_Degassing\" >What Is the Principle of Aluminium Degassing?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.aluminiumceramicfiber.com\/ar\/degassing-aluminium\/#How_Does_Rotary_Degassing_Improve_Hydrogen_Removal\" >How Does Rotary Degassing Improve Hydrogen Removal?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.aluminiumceramicfiber.com\/ar\/degassing-aluminium\/#Bubble_Dispersion\" >Bubble Dispersion<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.aluminiumceramicfiber.com\/ar\/degassing-aluminium\/#Hydrogen_Transfer_Efficiency\" >Hydrogen Transfer Efficiency<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.aluminiumceramicfiber.com\/ar\/degassing-aluminium\/#Melt_Circulation\" >Melt Circulation<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.aluminiumceramicfiber.com\/ar\/degassing-aluminium\/#What_Gases_Are_Used_for_Aluminium_Degassing\" >What Gases Are Used for Aluminium Degassing?<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.aluminiumceramicfiber.com\/ar\/degassing-aluminium\/#Nitrogen_N%E2%82%82\" >\u0627\u0644\u0646\u064a\u062a\u0631\u0648\u062c\u064a\u0646 (N\u2082)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.aluminiumceramicfiber.com\/ar\/degassing-aluminium\/#Argon_Ar\" >\u0627\u0644\u0623\u0631\u062c\u0648\u0646 (Ar)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.aluminiumceramicfiber.com\/ar\/degassing-aluminium\/#Mixed_Gas_Treatment\" >Mixed Gas Treatment<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.aluminiumceramicfiber.com\/ar\/degassing-aluminium\/#What_Are_the_Main_Methods_of_Aluminium_Degassing\" >What Are the Main Methods of Aluminium Degassing?<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.aluminiumceramicfiber.com\/ar\/degassing-aluminium\/#Inert_Gas_Injection_Degassing\" >Inert Gas Injection Degassing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.aluminiumceramicfiber.com\/ar\/degassing-aluminium\/#Rotary_Impeller_Degassing\" >\u0625\u0632\u0627\u0644\u0629 \u0627\u0644\u063a\u0627\u0632\u0627\u062a \u0628\u0648\u0627\u0633\u0637\u0629 \u0627\u0644\u0645\u0643\u0631\u0647 \u0627\u0644\u062f\u0648\u0627\u0631<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.aluminiumceramicfiber.com\/ar\/degassing-aluminium\/#Flux-Assisted_Degassing\" >Flux-Assisted Degassing<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.aluminiumceramicfiber.com\/ar\/degassing-aluminium\/#What_Is_an_Online_Degassing_Unit_for_Aluminium_Casting\" >What Is an Online Degassing Unit for Aluminium Casting?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.aluminiumceramicfiber.com\/ar\/degassing-aluminium\/#Factors_Affecting_Aluminium_Degassing_Efficiency\" >Factors Affecting Aluminium Degassing Efficiency<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.aluminiumceramicfiber.com\/ar\/degassing-aluminium\/#Bubble_Size\" >Bubble Size<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.aluminiumceramicfiber.com\/ar\/degassing-aluminium\/#Gas_Flow_Rate\" >\u0645\u0639\u062f\u0644 \u062a\u062f\u0641\u0642 \u0627\u0644\u063a\u0627\u0632<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.aluminiumceramicfiber.com\/ar\/degassing-aluminium\/#Rotor_Design\" >Rotor Design<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/www.aluminiumceramicfiber.com\/ar\/degassing-aluminium\/#Treatment_Time\" >\u0645\u062f\u0629 \u0627\u0644\u0639\u0644\u0627\u062c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/www.aluminiumceramicfiber.com\/ar\/degassing-aluminium\/#Melt_Temperature\" >\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0627\u0646\u0635\u0647\u0627\u0631<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/www.aluminiumceramicfiber.com\/ar\/degassing-aluminium\/#Conclusion\" >\u0627\u0644\u062e\u0644\u0627\u0635\u0629<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/www.aluminiumceramicfiber.com\/ar\/degassing-aluminium\/#FAQ\" >\u0627\u0644\u0623\u0633\u0626\u0644\u0629 \u0627\u0644\u0634\u0627\u0626\u0639\u0629<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h1 data-start=\"1625\" data-end=\"1684\"><span class=\"ez-toc-section\" id=\"Why_Is_Degassing_Aluminium_Necessary_in_Aluminum_Casting\"><\/span>Why Is Degassing Aluminium Necessary in Aluminum Casting?<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p data-start=\"1686\" data-end=\"1898\">The solubility of hydrogen in aluminum changes significantly between liquid and solid states. Molten aluminum can dissolve a certain amount of hydrogen, but the solubility decreases sharply during solidification.<\/p>\n<p data-start=\"1900\" data-end=\"2082\">When the hydrogen concentration exceeds the solubility limit, the excess hydrogen cannot remain dissolved in the solid metal. Instead, it forms gas pores inside the aluminum product.<\/p>\n<p data-start=\"2084\" data-end=\"2118\">These pores can negatively affect:<\/p>\n<ul data-start=\"2120\" data-end=\"2233\">\n<li data-start=\"2120\" data-end=\"2153\">Tensile strength and elongation<\/li>\n<li data-start=\"2154\" data-end=\"2174\">Fatigue resistance<\/li>\n<li data-start=\"2175\" data-end=\"2192\">\u062c\u0648\u062f\u0629 \u0627\u0644\u0633\u0637\u062d<\/li>\n<li data-start=\"2193\" data-end=\"2209\">Leak tightness<\/li>\n<li data-start=\"2210\" data-end=\"2233\">Machining performance<\/li>\n<\/ul>\n<p data-start=\"2235\" data-end=\"2405\">For applications such as aluminum sheet, foil stock, extrusion billets, automotive components, and aerospace alloys, controlling hydrogen content is especially important.<\/p>\n<p data-start=\"2407\" data-end=\"2524\">To reduce hydrogen absorption and improve melt quality, aluminum producers usually adopt several preventive measures:<\/p>\n<ul data-start=\"2526\" data-end=\"2786\">\n<li data-start=\"2526\" data-end=\"2575\">Selecting and drying charge materials carefully<\/li>\n<li data-start=\"2576\" data-end=\"2617\">Reducing unnecessary melt exposure time<\/li>\n<li data-start=\"2618\" data-end=\"2663\">Controlling melting and holding temperature<\/li>\n<li data-start=\"2664\" data-end=\"2728\">Using covering agents to reduce oxidation and moisture contact<\/li>\n<li data-start=\"2729\" data-end=\"2786\">Performing effective degassing treatment before casting<\/li>\n<\/ul>\n<p data-start=\"2788\" data-end=\"2898\">Among these measures, degassing is the key process for removing hydrogen already dissolved in molten aluminum.<\/p>\n<div class=\"mceTemp\"><\/div>\n<div id=\"attachment_9623\" style=\"width: 825px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-9623\" class=\"wp-image-9623\" src=\"https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/06\/hydrogen-in-aluminum-casting.webp\" alt=\"\u0627\u0644\u0647\u064a\u062f\u0631\u0648\u062c\u064a\u0646 \u0641\u064a \u0635\u0628 \u0627\u0644\u0623\u0644\u0648\u0645\u0646\u064a\u0648\u0645\" width=\"815\" height=\"652\" srcset=\"https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/06\/hydrogen-in-aluminum-casting.webp 1760w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/06\/hydrogen-in-aluminum-casting-300x240.webp 300w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/06\/hydrogen-in-aluminum-casting-1024x819.webp 1024w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/06\/hydrogen-in-aluminum-casting-768x614.webp 768w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/06\/hydrogen-in-aluminum-casting-1536x1229.webp 1536w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/06\/hydrogen-in-aluminum-casting-15x12.webp 15w\" sizes=\"auto, (max-width: 815px) 100vw, 815px\" \/><p id=\"caption-attachment-9623\" class=\"wp-caption-text\"><em>\u0627\u0644\u0647\u064a\u062f\u0631\u0648\u062c\u064a\u0646 \u0641\u064a \u0635\u0628 \u0627\u0644\u0623\u0644\u0648\u0645\u0646\u064a\u0648\u0645<\/em><\/p><\/div>\n<h1 style=\"text-align: center;\" data-start=\"2905\" data-end=\"2952\"><span class=\"ez-toc-section\" id=\"Learn_More_About_Our_Degassing_Equipment\"><\/span><a style=\"background-color: #fff3c4; display: inline-block; padding: 12px 28px; border-radius: 30px; color: #7a5a2a; text-decoration: none; font-size: 18px; font-weight: bold; text-align: center; border: 1px solid #E6D3A1;\" href=\"https:\/\/www.adtechaluminum.com\/product\/degassing-equipment\/\" target=\"_blank\" rel=\"noopener\">Learn More About Our Degassing Equipment<\/a><span class=\"ez-toc-section-end\"><\/span><\/h1>\n<h1 data-start=\"2905\" data-end=\"2952\"><span class=\"ez-toc-section\" id=\"What_Is_the_Principle_of_Aluminium_Degassing\"><\/span>What Is the Principle of Aluminium Degassing?<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p data-start=\"2954\" data-end=\"3072\">The most commonly used industrial aluminium degassing method is based on the <strong data-start=\"3031\" data-end=\"3071\">partial pressure degassing principle<\/strong>.<\/p>\n<p data-start=\"3074\" data-end=\"3223\">When hydrogen is dissolved in molten aluminum, an equilibrium exists between the hydrogen concentration in the metal and the surrounding environment.<\/p>\n<p data-start=\"3225\" data-end=\"3395\">According to the principle of gas partial pressure, hydrogen will move from an area with higher hydrogen partial pressure to an area with lower hydrogen partial pressure.<\/p>\n<p data-start=\"3397\" data-end=\"3643\">During inert gas degassing, nitrogen or argon is introduced into the molten aluminum through a rotor or injection system. Because the inert gas bubbles contain almost no hydrogen, the hydrogen partial pressure inside the bubbles is close to zero.<\/p>\n<p data-start=\"3645\" data-end=\"3695\">This creates a driving force for hydrogen removal.<\/p>\n<p data-start=\"3697\" data-end=\"3737\">The process can be described as follows:<\/p>\n<ol data-start=\"3739\" data-end=\"4011\">\n<li data-start=\"3739\" data-end=\"3822\">Dissolved hydrogen atoms diffuse from molten aluminum toward the bubble surface.<\/li>\n<li data-start=\"3823\" data-end=\"3878\">Hydrogen atoms combine into hydrogen molecules (H\u2082).<\/li>\n<li data-start=\"3879\" data-end=\"3929\">Hydrogen molecules enter the inert gas bubbles.<\/li>\n<li data-start=\"3930\" data-end=\"4011\">The bubbles rise through the melt and carry hydrogen out of the aluminum bath.<\/li>\n<\/ol>\n<p data-start=\"4013\" data-end=\"4126\">The efficiency of this process depends largely on the contact area between inert gas bubbles and molten aluminum.<\/p>\n<p data-start=\"4128\" data-end=\"4178\">Smaller and uniformly distributed bubbles provide:<\/p>\n<ul data-start=\"4180\" data-end=\"4286\">\n<li data-start=\"4180\" data-end=\"4211\">Larger gas-metal contact area<\/li>\n<li data-start=\"4212\" data-end=\"4247\">Longer residence time in the melt<\/li>\n<li data-start=\"4248\" data-end=\"4286\">Better hydrogen diffusion efficiency<\/li>\n<\/ul>\n<p data-start=\"4288\" data-end=\"4394\">Therefore, producing fine bubbles is one of the most important factors in improving degassing performance.<\/p>\n<p data-start=\"4288\" data-end=\"4394\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2312 aligncenter\" src=\"https:\/\/aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/06\/Degassing-Aluminium.jpg\" alt=\"\u0625\u0632\u0627\u0644\u0629 \u0627\u0644\u063a\u0627\u0632\u0627\u062a \u0645\u0646 \u0627\u0644\u0623\u0644\u0648\u0645\u0646\u064a\u0648\u0645\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/06\/Degassing-Aluminium.jpg 500w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/06\/Degassing-Aluminium-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<h1 data-start=\"4401\" data-end=\"4454\"><span class=\"ez-toc-section\" id=\"How_Does_Rotary_Degassing_Improve_Hydrogen_Removal\"><\/span>How Does Rotary Degassing Improve Hydrogen Removal?<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p data-start=\"4456\" data-end=\"4574\">In industrial aluminum casting, rotary degassing is one of the most widely used methods for molten aluminum treatment.<\/p>\n<p data-start=\"4576\" data-end=\"4707\">Unlike simple gas injection, rotary degassing uses a rotating impeller to disperse inert gas into fine bubbles throughout the melt.<\/p>\n<p data-start=\"4709\" data-end=\"4738\">The rotating action improves:<\/p>\n<h3 data-start=\"4740\" data-end=\"4761\"><span class=\"ez-toc-section\" id=\"Bubble_Dispersion\"><\/span>Bubble Dispersion<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"4763\" data-end=\"4883\">The impeller breaks large gas bubbles into smaller bubbles, increasing the contact area between gas and molten aluminum.<\/p>\n<h3 data-start=\"4885\" data-end=\"4917\"><span class=\"ez-toc-section\" id=\"Hydrogen_Transfer_Efficiency\"><\/span>Hydrogen Transfer Efficiency<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"4919\" data-end=\"5008\">More contact area allows dissolved hydrogen to diffuse into the bubbles more efficiently.<\/p>\n<h3 data-start=\"5010\" data-end=\"5030\"><span class=\"ez-toc-section\" id=\"Melt_Circulation\"><\/span>Melt Circulation<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"5032\" data-end=\"5145\">The rotation creates controlled melt movement, helping distribute the treatment gas throughout the aluminum bath.<\/p>\n<p data-start=\"5147\" data-end=\"5190\">A typical rotary degassing system includes:<\/p>\n<ul data-start=\"5192\" data-end=\"5295\">\n<li data-start=\"5192\" data-end=\"5211\">Degassing chamber<\/li>\n<li data-start=\"5212\" data-end=\"5228\">Graphite rotor<\/li>\n<li data-start=\"5229\" data-end=\"5242\">Drive motor<\/li>\n<li data-start=\"5243\" data-end=\"5263\">Gas control system<\/li>\n<li data-start=\"5264\" data-end=\"5295\">Temperature monitoring system<\/li>\n<\/ul>\n<p data-start=\"5297\" data-end=\"5344\">The performance of rotary degassing depends on:<\/p>\n<ul data-start=\"5346\" data-end=\"5446\">\n<li data-start=\"5346\" data-end=\"5360\">\u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u062f\u0648\u0627\u0631<\/li>\n<li data-start=\"5361\" data-end=\"5374\">\u0633\u0631\u0639\u0629 \u0627\u0644\u062f\u0648\u0627\u0631<\/li>\n<li data-start=\"5375\" data-end=\"5390\">\u0645\u0639\u062f\u0644 \u062a\u062f\u0641\u0642 \u0627\u0644\u063a\u0627\u0632<\/li>\n<li data-start=\"5391\" data-end=\"5407\">\u0645\u062f\u0629 \u0627\u0644\u0639\u0644\u0627\u062c<\/li>\n<li data-start=\"5408\" data-end=\"5426\">Melt temperature<\/li>\n<li data-start=\"5427\" data-end=\"5446\">\u062a\u0631\u0643\u064a\u0628 \u0627\u0644\u0633\u0628\u0627\u0626\u0643<\/li>\n<\/ul>\n<p data-start=\"5448\" data-end=\"5542\">Improper parameters may reduce hydrogen removal efficiency or introduce unnecessary oxidation.<\/p>\n<h1 data-start=\"5549\" data-end=\"5595\"><span class=\"ez-toc-section\" id=\"What_Gases_Are_Used_for_Aluminium_Degassing\"><\/span>What Gases Are Used for Aluminium Degassing?<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p data-start=\"5597\" data-end=\"5711\">The gases used for aluminium degassing mainly include inert gases and, in some cases,\u00a0 active gases or mixed gases.<\/p>\n<h2 data-start=\"5713\" data-end=\"5729\"><span class=\"ez-toc-section\" id=\"Nitrogen_N%E2%82%82\"><\/span>\u0627\u0644\u0646\u064a\u062a\u0631\u0648\u062c\u064a\u0646 (N\u2082)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"5731\" data-end=\"5802\">Nitrogen is widely used because of its availability and cost advantage.<\/p>\n<p data-start=\"5804\" data-end=\"5871\">It is suitable for many conventional aluminum casting applications.<\/p>\n<h2 data-start=\"5873\" data-end=\"5886\"><span class=\"ez-toc-section\" id=\"Argon_Ar\"><\/span>\u0627\u0644\u0623\u0631\u062c\u0648\u0646 (Ar)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"5888\" data-end=\"6029\">Argon provides excellent inertness and is often selected for high-quality aluminum production where melt cleanliness requirements are higher.<\/p>\n<h2 data-start=\"6031\" data-end=\"6053\"><span class=\"ez-toc-section\" id=\"Mixed_Gas_Treatment\"><\/span>Mixed Gas Treatment<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"6055\" data-end=\"6179\">Some processes use mixed gases or combine refining flux with gas treatment to improve overall melt purification performance.<\/p>\n<p data-start=\"6181\" data-end=\"6210\">The choice of gas depends on:<\/p>\n<ul data-start=\"6212\" data-end=\"6292\">\n<li data-start=\"6212\" data-end=\"6224\">\u0646\u0648\u0639 \u0627\u0644\u0633\u0628\u0627\u0626\u0643<\/li>\n<li data-start=\"6225\" data-end=\"6247\">Product requirements<\/li>\n<li data-start=\"6248\" data-end=\"6271\">Hydrogen level target<\/li>\n<li data-start=\"6272\" data-end=\"6292\">\u0639\u0645\u0644\u064a\u0629 \u0627\u0644\u0625\u0646\u062a\u0627\u062c<\/li>\n<\/ul>\n<h1 data-start=\"6299\" data-end=\"6350\"><span class=\"ez-toc-section\" id=\"What_Are_the_Main_Methods_of_Aluminium_Degassing\"><\/span>What Are the Main Methods of Aluminium Degassing?<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<h2 data-start=\"6352\" data-end=\"6384\"><span class=\"ez-toc-section\" id=\"Inert_Gas_Injection_Degassing\"><\/span>Inert Gas Injection Degassing<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"6386\" data-end=\"6470\">Inert gas injection is the basic principle behind most industrial degassing systems.<\/p>\n<p data-start=\"6472\" data-end=\"6519\">Gas is introduced into molten aluminum through:<\/p>\n<ul data-start=\"6521\" data-end=\"6587\">\n<li data-start=\"6521\" data-end=\"6536\">Ceramic tubes<\/li>\n<li data-start=\"6537\" data-end=\"6551\">Porous plugs<\/li>\n<li data-start=\"6552\" data-end=\"6569\">Graphite rotors<\/li>\n<li data-start=\"6570\" data-end=\"6587\">\u0648\u062d\u062f\u0627\u062a \u0625\u0632\u0627\u0644\u0629 \u0627\u0644\u063a\u0627\u0632\u0627\u062a<\/li>\n<\/ul>\n<p data-start=\"6589\" data-end=\"6664\">The gas bubbles absorb dissolved hydrogen and transport it out of the melt.<\/p>\n<p data-start=\"6666\" data-end=\"6785\">Although simple gas injection can remove hydrogen, its efficiency depends strongly on bubble size and gas distribution.<\/p>\n<h2 data-start=\"6792\" data-end=\"6820\"><span class=\"ez-toc-section\" id=\"Rotary_Impeller_Degassing\"><\/span>\u0625\u0632\u0627\u0644\u0629 \u0627\u0644\u063a\u0627\u0632\u0627\u062a \u0628\u0648\u0627\u0633\u0637\u0629 \u0627\u0644\u0645\u0643\u0631\u0647 \u0627\u0644\u062f\u0648\u0627\u0631<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"6822\" data-end=\"6908\">Rotary impeller degassing is currently one of the most effective industrial solutions.<\/p>\n<p data-start=\"6910\" data-end=\"7067\">The rotating rotor creates fine bubbles and improves gas-metal interaction, resulting in better hydrogen removal compared with conventional bubbling methods.<\/p>\n<p data-start=\"7069\" data-end=\"7090\">It is widely used in:<\/p>\n<ul data-start=\"7092\" data-end=\"7204\">\n<li data-start=\"7092\" data-end=\"7121\">Aluminum rolling industries<\/li>\n<li data-start=\"7122\" data-end=\"7151\">\u0625\u0646\u062a\u0627\u062c \u0642\u0636\u0628\u0627\u0646 \u0627\u0644\u0628\u062b\u0642<\/li>\n<li data-start=\"7152\" data-end=\"7172\">\u0627\u0644\u0635\u0628 \u0641\u064a \u0635\u0646\u0627\u0639\u0629 \u0627\u0644\u0633\u064a\u0627\u0631\u0627\u062a<\/li>\n<li data-start=\"7173\" data-end=\"7204\">High-quality alloy production<\/li>\n<\/ul>\n<h2 data-start=\"7211\" data-end=\"7237\"><span class=\"ez-toc-section\" id=\"Flux-Assisted_Degassing\"><\/span>Flux-Assisted Degassing<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"7239\" data-end=\"7319\">Another method involves adding refining flux powder together with treatment gas.<\/p>\n<p data-start=\"7321\" data-end=\"7354\">Flux-assisted treatment can help:<\/p>\n<ul data-start=\"7356\" data-end=\"7437\">\n<li data-start=\"7356\" data-end=\"7373\">Remove hydrogen<\/li>\n<li data-start=\"7374\" data-end=\"7401\">Separate oxide inclusions<\/li>\n<li data-start=\"7402\" data-end=\"7437\">Improve aluminum melt cleanliness<\/li>\n<\/ul>\n<p data-start=\"7439\" data-end=\"7595\">However, flux selection must be based on alloy chemistry and production requirements because different flux systems provide different metallurgical effects.<\/p>\n<h1 data-start=\"7602\" data-end=\"7659\"><span class=\"ez-toc-section\" id=\"What_Is_an_Online_Degassing_Unit_for_Aluminium_Casting\"><\/span>What Is an Online Degassing Unit for Aluminium Casting?<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p data-start=\"7661\" data-end=\"7800\">For continuous aluminum casting production, an online degassing unit provides continuous hydrogen removal during the melt transfer process.<\/p>\n<p data-start=\"7802\" data-end=\"7941\">Unlike batch treatment, where aluminum is treated separately before casting, online degassing integrates directly into the production line.<\/p>\n<p data-start=\"7943\" data-end=\"7962\">\u0648\u062a\u0634\u0645\u0644 \u0627\u0644\u0645\u0632\u0627\u064a\u0627 \u0645\u0627 \u064a\u0644\u064a:<\/p>\n<ul data-start=\"7964\" data-end=\"8099\">\n<li data-start=\"7964\" data-end=\"7994\">Stable degassing performance<\/li>\n<li data-start=\"7995\" data-end=\"8017\">Continuous operation<\/li>\n<li data-start=\"8018\" data-end=\"8043\">Reduced manual handling<\/li>\n<li data-start=\"8044\" data-end=\"8072\">\u062a\u062d\u0633\u064a\u0646 \u0627\u062a\u0633\u0627\u0642 \u0627\u0644\u0639\u0645\u0644\u064a\u0627\u062a<\/li>\n<li data-start=\"8073\" data-end=\"8099\">Improved casting quality<\/li>\n<\/ul>\n<p data-start=\"8101\" data-end=\"8307\">Online degassing systems are commonly installed before filtration units and casting equipment to ensure that aluminum melt enters the casting process with controlled hydrogen content and reduced impurities.<\/p>\n<p data-start=\"8309\" data-end=\"8417\">For demanding applications, online degassing is often combined with ceramic foam filtration to achieve both:<\/p>\n<ul data-start=\"8419\" data-end=\"8470\">\n<li data-start=\"8419\" data-end=\"8437\">\u0625\u0632\u0627\u0644\u0629 \u0627\u0644\u0647\u064a\u062f\u0631\u0648\u062c\u064a\u0646<\/li>\n<li data-start=\"8438\" data-end=\"8470\">Non-metallic inclusion removal<\/li>\n<\/ul>\n<p data-start=\"8472\" data-end=\"8548\">Together, these processes significantly improve molten aluminum cleanliness.<\/p>\n<div id=\"attachment_9563\" style=\"width: 1160px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-9563\" class=\"wp-image-9563\" src=\"https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2026\/07\/\u65e0\u4eba\u50cf\u7248.png\" alt=\"Adtech online degassing equipment in aluminum China2026\" width=\"1150\" height=\"1285\" srcset=\"https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2026\/07\/\u65e0\u4eba\u50cf\u7248.png 1504w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2026\/07\/\u65e0\u4eba\u50cf\u7248-269x300.png 269w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2026\/07\/\u65e0\u4eba\u50cf\u7248-917x1024.png 917w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2026\/07\/\u65e0\u4eba\u50cf\u7248-768x858.png 768w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2026\/07\/\u65e0\u4eba\u50cf\u7248-1375x1536.png 1375w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2026\/07\/\u65e0\u4eba\u50cf\u7248-11x12.png 11w\" sizes=\"auto, (max-width: 1150px) 100vw, 1150px\" \/><p id=\"caption-attachment-9563\" class=\"wp-caption-text\"><em>Adtech online degassing equipment in aluminum China2026<\/em><\/p><\/div>\n<p style=\"text-align: center;\" data-start=\"2234\" data-end=\"2419\"><a style=\"background-color: #fff3c4; display: inline-block; padding: 12px 28px; border-radius: 30px; color: #7a5a2a; text-decoration: none; font-size: 18px; font-weight: bold; text-align: center; border: 1px solid #E6D3A1;\" href=\"https:\/\/www.adtechaluminum.com\/product\/degassing-equipment\/\" target=\"_blank\" rel=\"noopener\">Learn More About Our Degassing Equipment<\/a><\/p>\n<h1 data-start=\"8555\" data-end=\"8605\"><span class=\"ez-toc-section\" id=\"Factors_Affecting_Aluminium_Degassing_Efficiency\"><\/span>Factors Affecting Aluminium Degassing Efficiency<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p data-start=\"8607\" data-end=\"8731\">Although the principle of degassing is straightforward, actual industrial performance depends on multiple operating factors.<\/p>\n<h2 data-start=\"8733\" data-end=\"8747\"><span class=\"ez-toc-section\" id=\"Bubble_Size\"><\/span>Bubble Size<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"8749\" data-end=\"8870\">Smaller bubbles provide a larger surface area for hydrogen transfer. Poor bubble dispersion reduces treatment efficiency.<\/p>\n<h2 data-start=\"8872\" data-end=\"8888\"><span class=\"ez-toc-section\" id=\"Gas_Flow_Rate\"><\/span>\u0645\u0639\u062f\u0644 \u062a\u062f\u0641\u0642 \u0627\u0644\u063a\u0627\u0632<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"8890\" data-end=\"9025\">Excessive gas flow may generate large bubbles and shorten residence time, while insufficient gas flow may lead to incomplete treatment.<\/p>\n<h2 data-start=\"9027\" data-end=\"9042\"><span class=\"ez-toc-section\" id=\"Rotor_Design\"><\/span>Rotor Design<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"9044\" data-end=\"9122\">The rotor is a key component affecting bubble generation and melt circulation.<\/p>\n<h2 data-start=\"9124\" data-end=\"9141\"><span class=\"ez-toc-section\" id=\"Treatment_Time\"><\/span>\u0645\u062f\u0629 \u0627\u0644\u0639\u0644\u0627\u062c<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"9143\" data-end=\"9267\">Longer treatment generally improves hydrogen removal, but excessive treatment may increase oxidation and energy consumption.<\/p>\n<h2 data-start=\"9269\" data-end=\"9288\"><span class=\"ez-toc-section\" id=\"Melt_Temperature\"><\/span>\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0627\u0646\u0635\u0647\u0627\u0631<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"9290\" data-end=\"9411\">Temperature affects hydrogen solubility and treatment efficiency. Maintaining the correct temperature range is essential.<\/p>\n<h1 data-start=\"9418\" data-end=\"9430\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>\u0627\u0644\u062e\u0644\u0627\u0635\u0629<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p data-start=\"9432\" data-end=\"9694\">Degassing aluminium is a fundamental step in aluminum melt purification. By applying the principle of partial pressure difference, inert gas treatment removes dissolved hydrogen from molten aluminum and reduces the risk of porosity defects during solidification.<\/p>\n<p data-start=\"9696\" data-end=\"10046\">Among available methods, rotary degassing and online degassing systems provide efficient and reliable solutions for modern aluminum production. Combined with proper melting practices and filtration technology, effective degassing helps aluminum producers achieve cleaner melt quality, improved casting performance, and more consistent final products.<\/p>\n<h2 data-start=\"9696\" data-end=\"10046\"><span class=\"ez-toc-section\" id=\"FAQ\"><\/span>\u0627\u0644\u0623\u0633\u0626\u0644\u0629 \u0627\u0644\u0634\u0627\u0626\u0639\u0629<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<details>\n<summary>1. What is aluminium degassing?<\/summary>\n<p>Aluminium degassing is a molten metal treatment process used to remove dissolved hydrogen from liquid aluminum. It helps reduce porosity defects and improves the quality and mechanical properties of cast aluminum products.<\/p>\n<\/details>\n<details>\n<summary>2. Why is hydrogen removal important in aluminum casting?<\/summary>\n<p>Hydrogen has high solubility in molten aluminum but low solubility in solid aluminum. Excess hydrogen forms gas pores during solidification, which can reduce strength, fatigue resistance, and surface quality.<\/p>\n<\/details>\n<details>\n<summary>3. How does aluminium degassing work?<\/summary>\n<p>Aluminium degassing works by introducing inert gas bubbles into molten aluminum. Dissolved hydrogen diffuses into the bubbles and is removed from the melt when the bubbles rise to the surface.<\/p>\n<\/details>\n<details>\n<summary>4. What gases are used for aluminium degassing?<\/summary>\n<p>Nitrogen (N\u2082) and argon (Ar) are the most commonly used gases for aluminium degassing. Argon is often preferred for high-quality applications because of its higher inertness.<\/p>\n<\/details>\n<details>\n<summary>5. What is rotary degassing of aluminium?<\/summary>\n<p>Rotary degassing uses a rotating graphite rotor to disperse inert gas into fine bubbles inside molten aluminum. The smaller bubbles provide more gas-metal contact area, improving hydrogen removal efficiency.<\/p>\n<\/details>\n<details>\n<summary>6. What factors affect aluminium degassing efficiency?<\/summary>\n<p>The main factors include bubble size, gas flow rate, rotor design, treatment time, melt temperature, and alloy composition. Proper control of these parameters improves degassing performance.<\/p>\n<\/details>\n<details>\n<summary>7. What is the difference between rotary degassing and online degassing?<\/summary>\n<p>Rotary degassing is commonly used for batch treatment of molten aluminum, while online degassing is integrated into continuous casting lines to provide stable hydrogen removal during melt transfer.<\/p>\n<\/details>\n<details>\n<summary>8. Can aluminium degassing remove oxide inclusions?<\/summary>\n<p>Aluminium degassing mainly removes dissolved hydrogen. Oxide inclusions are usually removed through filtration systems such as ceramic foam filters, although some refining processes can help improve overall melt cleanliness.<\/p>\n<\/details>\n<details>\n<summary>9. How long does aluminium degassing take?<\/summary>\n<p>The required degassing time depends on melt volume, hydrogen level, rotor design, gas flow rate, and production requirements. Industrial treatment times are typically optimized according to specific casting conditions.<\/p>\n<\/details>\n<details>\n<summary>10. Should aluminium degassing be combined with filtration?<\/summary>\n<p>Yes. Degassing removes dissolved hydrogen, while filtration removes solid non-metallic inclusions. Combining both processes helps achieve cleaner aluminum melt and better casting quality.<\/p>\n<\/details>","protected":false},"excerpt":{"rendered":"<p>Degassing aluminium is an essential molten metal treatment process used to remove dissolved hydrogen from aluminum and aluminum alloys before casting. Since hydrogen is the only gas with significant solubility in liquid aluminum, controlling hydrogen content is critical for preventing porosity defects and improving the mechanical properties of final products. In modern aluminum production, inert [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2312,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86],"tags":[5825,5795,5828,5831,5830,5832,5829,5794,5788,5789,5824,5793,5799,5798,5797,5801,5804,5805,5806,5803,5802,5807,5808,5811,5812,5809,5810,5827,5826,5813,5814,5816,5815,5817,5822,5818,5821,5819,5823,5820,5792,5833,5834,5796,5791,5800,5790],"class_list":["post-1358","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-degassing-aluminium-alcom-aluminum-malaysia","tag-degassing-aluminium-aluminium-indonesia","tag-degassing-aluminium-aluminium-malaysia","tag-degassing-aluminium-aluminium-malaysia-berhad","tag-degassing-aluminium-aluminium-malaysia-price","tag-degassing-aluminium-aluminium-malaysia-product","tag-degassing-aluminium-aluminium-malaysia-supplier","tag-degassing-aluminium-aluminum-die-casting-indonesia","tag-degassing-aluminium-aluminum-indonesia","tag-degassing-aluminium-aluminum-indonesia-jakarta","tag-degassing-aluminium-aluminum-malaysia","tag-degassing-aluminium-aluminum-smelter-indonesia","tag-degassing-aluminium-daiki-aluminium-indonesia","tag-degassing-aluminium-hyundai-aluminium-indonesia","tag-degassing-aluminium-il-sogno-aluminium-indonesia","tag-degassing-aluminium-indonesia-aluminium","tag-degassing-aluminium-indonesia-aluminium-foil","tag-degassing-aluminium-indonesia-aluminium-industry","tag-degassing-aluminium-indonesia-aluminium-ingot","tag-degassing-aluminium-indonesia-aluminium-production","tag-degassing-aluminium-indonesia-aluminium-smelter","tag-degassing-aluminium-indonesia-aluminum","tag-degassing-aluminium-indonesia-aluminum-company","tag-degassing-aluminium-indonesia-aluminum-ingot","tag-degassing-aluminium-indonesia-aluminum-production","tag-degassing-aluminium-indonesia-aluminum-smelter","tag-degassing-aluminium-indonesia-aluminum-supplier","tag-degassing-aluminium-kamco-aluminum-malaysia","tag-degassing-aluminium-lb-aluminum-malaysia","tag-degassing-aluminium-malaysia-aluminium","tag-degassing-aluminium-malaysia-aluminium-alloy","tag-degassing-aluminium-malaysia-aluminium-scrap","tag-degassing-aluminium-malaysia-aluminium-smelter","tag-degassing-aluminium-malaysia-aluminum","tag-degassing-aluminium-malaysia-aluminum-alloy","tag-degassing-aluminium-malaysia-aluminum-company","tag-degassing-aluminium-malaysia-aluminum-foil","tag-degassing-aluminium-malaysia-aluminum-ingot","tag-degassing-aluminium-malaysia-aluminum-manufacturer","tag-degassing-aluminium-malaysia-aluminum-smelter","tag-degassing-aluminium-nanshan-aluminum-indonesia","tag-degassing-aluminium-pa-aluminium-malaysia","tag-degassing-aluminium-pmb-aluminium-malaysia","tag-degassing-aluminium-pt-daiki-aluminium-indonesia","tag-degassing-aluminium-showa-aluminum-indonesia","tag-degassing-aluminium-xinfa-aluminium-indonesia","tag-degassing-aluminium-ykk-aluminum-indonesia"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Degassing Aluminium: Methods and Hydrogen Removal from Molten Aluminum<\/title>\n<meta name=\"description\" content=\"Hydrogen control is critical in aluminum casting. 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