{"id":6615,"date":"2021-07-31T08:25:43","date_gmt":"2021-07-31T08:25:43","guid":{"rendered":"https:\/\/www.aluminiumceramicfiber.com\/?p=6615"},"modified":"2026-09-18T09:34:45","modified_gmt":"2026-09-18T09:34:45","slug":"40ppi-ceramic-foam-filter","status":"publish","type":"post","link":"https:\/\/www.aluminiumceramicfiber.com\/tr\/40ppi-ceramic-foam-filter\/","title":{"rendered":"40 PPI Seramik K\u00f6p\u00fck Filtre"},"content":{"rendered":"<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\">\u0130\u00e7indekiler<\/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=\"\u0130\u00e7indekiler Tablosunu A\u00e7\/Kapat\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Ge\u00e7i\u015f<\/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\/tr\/40ppi-ceramic-foam-filter\/#40_PPI_Ceramic_Foam_Filter_for_Molten_Aluminum\" >40 PPI Ceramic Foam Filter for Molten Aluminum<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.aluminiumceramicfiber.com\/tr\/40ppi-ceramic-foam-filter\/#What_Is_a_40_PPI_Ceramic_Foam_Filter\" >What Is a 40 PPI Ceramic Foam Filter?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.aluminiumceramicfiber.com\/tr\/40ppi-ceramic-foam-filter\/#What_Does_a_40_PPI_CFF_Remove_from_Molten_Aluminum\" >What Does a 40 PPI CFF Remove from Molten Aluminum?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.aluminiumceramicfiber.com\/tr\/40ppi-ceramic-foam-filter\/#How_Does_a_40_PPI_Ceramic_Foam_Filter_Work\" >How Does a 40 PPI Ceramic Foam Filter Work?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.aluminiumceramicfiber.com\/tr\/40ppi-ceramic-foam-filter\/#What_Does_40_PPI_Mean\" >What Does 40 PPI Mean?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.aluminiumceramicfiber.com\/tr\/40ppi-ceramic-foam-filter\/#Why_Choose_a_40_PPI_Ceramic_Foam_Filter\" >Why Choose a 40 PPI Ceramic Foam Filter?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.aluminiumceramicfiber.com\/tr\/40ppi-ceramic-foam-filter\/#40_PPI_vs_20_PPI_vs_30_PPI_Ceramic_Foam_Filters\" >40 PPI vs 20 PPI vs 30 PPI Ceramic Foam Filters<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.aluminiumceramicfiber.com\/tr\/40ppi-ceramic-foam-filter\/#How_Do_You_Select_the_Right_Size_of_40_PPI_CFF\" >How Do You Select the Right Size of 40 PPI CFF?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.aluminiumceramicfiber.com\/tr\/40ppi-ceramic-foam-filter\/#Metal_Flow_Rate\" >Metal Flow Rate<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.aluminiumceramicfiber.com\/tr\/40ppi-ceramic-foam-filter\/#Casting_Duration\" >Casting Duration<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.aluminiumceramicfiber.com\/tr\/40ppi-ceramic-foam-filter\/#Inclusion_Load\" >Inclusion Load<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.aluminiumceramicfiber.com\/tr\/40ppi-ceramic-foam-filter\/#Filter_Thickness\" >Filter Thickness<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.aluminiumceramicfiber.com\/tr\/40ppi-ceramic-foam-filter\/#Filter_Area\" >Filter Area<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.aluminiumceramicfiber.com\/tr\/40ppi-ceramic-foam-filter\/#Filter_Box_Design\" >Filter Box Design<\/a><\/li><\/ul><\/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\/tr\/40ppi-ceramic-foam-filter\/#Where_Is_a_40_PPI_Ceramic_Foam_Filter_Used\" >Where Is a 40 PPI Ceramic Foam Filter Used?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.aluminiumceramicfiber.com\/tr\/40ppi-ceramic-foam-filter\/#Where_Is_the_Ceramic_Foam_Filter_Installed\" >Where Is the Ceramic Foam Filter Installed?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.aluminiumceramicfiber.com\/tr\/40ppi-ceramic-foam-filter\/#Does_a_40_PPI_CFF_Remove_Hydrogen\" >Does a 40 PPI CFF Remove Hydrogen?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.aluminiumceramicfiber.com\/tr\/40ppi-ceramic-foam-filter\/#Can_CFF_Reduce_Porosity_in_Aluminum_Castings\" >Can CFF Reduce Porosity in Aluminum Castings?<\/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\/tr\/40ppi-ceramic-foam-filter\/#What_Ceramic_Material_Is_Used_for_a_40_PPI_Filter\" >What Ceramic Material Is Used for a 40 PPI Filter?<\/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\/tr\/40ppi-ceramic-foam-filter\/#How_Should_a_40_PPI_Ceramic_Foam_Filter_Be_Installed\" >How Should a 40 PPI Ceramic Foam Filter Be Installed?<\/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\/tr\/40ppi-ceramic-foam-filter\/#What_Causes_a_40_PPI_Ceramic_Foam_Filter_to_Block\" >What Causes a 40 PPI Ceramic Foam Filter to Block?<\/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\/tr\/40ppi-ceramic-foam-filter\/#40_PPI_Ceramic_Foam_Filter_for_Aluminum_Casting\" >40 PPI Ceramic Foam Filter for Aluminum Casting<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/www.aluminiumceramicfiber.com\/tr\/40ppi-ceramic-foam-filter\/#What_Information_Is_Needed_to_Select_a_40_PPI_CFF\" >What Information Is Needed to Select a 40 PPI CFF?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/www.aluminiumceramicfiber.com\/tr\/40ppi-ceramic-foam-filter\/#40_PPI_Ceramic_Foam_Filter_Manufacturer\" >40 PPI Ceramic Foam Filter Manufacturer<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/www.aluminiumceramicfiber.com\/tr\/40ppi-ceramic-foam-filter\/#FAQ\" >S\u0131k Sorulan Sorular<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h1><span class=\"ez-toc-section\" id=\"40_PPI_Ceramic_Foam_Filter_for_Molten_Aluminum\"><\/span>40 PPI Ceramic Foam Filter for Molten Aluminum<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p>A <strong>40 PPI ceramic foam filter (CFF)<\/strong> is a porous ceramic filter used to remove suspended non-metallic inclusions from molten aluminum before casting. With approximately 40 pores per inch, it provides a finer filtration structure than lower-PPI filters and can be selected when the casting process requires improved melt cleanliness.<\/p>\n<p>The filter is typically installed in a refractory filter box or filtration unit between upstream melt treatment and the casting machine. Proper selection depends on the aluminum alloy, metal flow rate, casting time, inclusion load, filter dimensions, and required metal cleanliness.<\/p>\n<div id=\"attachment_9596\" style=\"width: 1264px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-9596\" class=\"size-full wp-image-9596\" src=\"https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/06\/ceramic-foam-filter\u4e3b\u56fe.webp\" alt=\"AdTech marka, geni\u015fletilebilir s\u0131zd\u0131rmazl\u0131k contal\u0131 seramik k\u00f6p\u00fck filtre\" width=\"1254\" height=\"1254\" srcset=\"https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/06\/ceramic-foam-filter\u4e3b\u56fe.webp 1254w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/06\/ceramic-foam-filter\u4e3b\u56fe-300x300.webp 300w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/06\/ceramic-foam-filter\u4e3b\u56fe-1024x1024.webp 1024w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/06\/ceramic-foam-filter\u4e3b\u56fe-150x150.webp 150w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/06\/ceramic-foam-filter\u4e3b\u56fe-768x768.webp 768w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/06\/ceramic-foam-filter\u4e3b\u56fe-12x12.webp 12w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/06\/ceramic-foam-filter\u4e3b\u56fe-120x120.webp 120w\" sizes=\"auto, (max-width: 1254px) 100vw, 1254px\" \/><p id=\"caption-attachment-9596\" class=\"wp-caption-text\"><em>AdTech marka, geni\u015fletilebilir s\u0131zd\u0131rmazl\u0131k contal\u0131 seramik k\u00f6p\u00fck filtre<\/em><\/p><\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_Is_a_40_PPI_Ceramic_Foam_Filter\"><\/span>What Is a 40 PPI Ceramic Foam Filter?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A 40 PPI ceramic foam filter is a ceramic foam filtration medium with a nominal pore density of <strong>40 pores per inch (PPI)<\/strong>.<\/p>\n<p>Unlike a conventional screen filter with straight openings, ceramic foam filters have a three-dimensional interconnected pore structure. Molten aluminum flows through the ceramic network while suspended non-metallic inclusions are captured through a combination of mechanisms such as interception, entrapment, and attachment within the filter structure.<\/p>\n<p>For aluminum casting, the filter is normally placed in a controlled filtration chamber or filter box rather than simply exposed to the open atmosphere.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_Does_a_40_PPI_CFF_Remove_from_Molten_Aluminum\"><\/span>What Does a 40 PPI CFF Remove from Molten Aluminum?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The primary purpose of a ceramic foam filter is to remove <strong>non-metallic inclusions<\/strong> from molten aluminum.<\/p>\n<p>Potential inclusions can originate from:<\/p>\n<ul>\n<li>Oksit tabakalar\u0131<\/li>\n<li>Dross and slag<\/li>\n<li>Eroded furnace or refractory materials<\/li>\n<li>Karb\u00fcrler<\/li>\n<li>Other insoluble particles generated during melting and handling<\/li>\n<\/ul>\n<p>Removing these inclusions can help improve melt cleanliness and reduce the risk of inclusion-related defects in downstream casting and processing.<\/p>\n<p>However, a ceramic foam filter should not be considered a substitute for all other melt-treatment processes.<\/p>\n<table>\n<thead>\n<tr>\n<th>Melt Quality Problem<\/th>\n<th>Typical Treatment<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Metal olmayan kal\u0131nt\u0131lar<\/td>\n<td>Seramik k\u00f6p\u00fck filtreleme<\/td>\n<\/tr>\n<tr>\n<td>\u00c7\u00f6z\u00fcnm\u00fc\u015f hidrojen<\/td>\n<td>Gaz Giderme<\/td>\n<\/tr>\n<tr>\n<td>Magnesium above target<\/td>\n<td>Magnesium-removal treatment<\/td>\n<\/tr>\n<tr>\n<td>Oxide formation<\/td>\n<td>Process control + melt cleaning<\/td>\n<\/tr>\n<tr>\n<td>Tah\u0131l yap\u0131s\u0131<\/td>\n<td>Grain refinement<\/td>\n<\/tr>\n<tr>\n<td>Excess dross<\/td>\n<td>Skimming \/ flux treatment<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span class=\"ez-toc-section\" id=\"How_Does_a_40_PPI_Ceramic_Foam_Filter_Work\"><\/span>How Does a 40 PPI Ceramic Foam Filter Work?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>When molten aluminum enters the ceramic foam filter, the metal passes through the interconnected ceramic pores.<\/p>\n<p>Non-metallic inclusions are retained within the filter structure instead of continuing downstream with the molten metal.<\/p>\n<p>The filter therefore acts as a <strong>depth-type filtration medium<\/strong>, rather than simply allowing inclusions to accumulate on a flat screen surface.<\/p>\n<p>The actual filtration performance depends on more than PPI alone. Important factors include:<\/p>\n<ul>\n<li>Filter pore structure<\/li>\n<li>Seramik malzeme<\/li>\n<li>Filter thickness<\/li>\n<li>Filter surface area<\/li>\n<li>Metal flow rate<\/li>\n<li>Melt temperature<\/li>\n<li>Inclusion concentration<\/li>\n<li>Inclusion size and morphology<\/li>\n<li>Filter installation<\/li>\n<li>Upstream melt cleanliness<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"What_Does_40_PPI_Mean\"><\/span>What Does 40 PPI Mean?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>PPI means pores per inch.<\/strong><\/p>\n<p>A 40 PPI ceramic foam filter has a nominal pore density of approximately 40 pores per linear inch.<\/p>\n<p>PPI is commonly used to describe the relative fineness of a ceramic foam filter. In general, increasing PPI produces a finer pore structure.<\/p>\n<p>However, <strong>PPI should not be treated as a direct measurement of filtration efficiency<\/strong>.<\/p>\n<p>For example, a 60 PPI filter is not automatically better than a 40 PPI filter for every aluminum casting application. A finer filter can also create greater flow resistance and may have a shorter operating life if the melt contains a high inclusion load.<\/p>\n<p>The filter must therefore be selected according to the complete casting process.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Why_Choose_a_40_PPI_Ceramic_Foam_Filter\"><\/span>Why Choose a 40 PPI Ceramic Foam Filter?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>40 PPI is often considered when a casting process requires a relatively fine filtration structure without automatically moving to the highest available PPI.<\/p>\n<p>A 40 PPI filter may be appropriate when the plant needs a balance between:<\/p>\n<ul>\n<li>Kapsama \u00e7\u0131karma<\/li>\n<li>Metal flow<\/li>\n<li>Filtration capacity<\/li>\n<li>Bas\u0131n\u00e7 d\u00fc\u015f\u00fc\u015f\u00fc<\/li>\n<li>Filter service life<\/li>\n<li>Required melt cleanliness<\/li>\n<\/ul>\n<p>The correct choice depends on the application rather than a universal PPI recommendation.<\/p>\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\/ceramic-foam-filter\/\" target=\"_blank\" rel=\"noopener\">Learn More About Our Molten-Aluminum Treatment<\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"40_PPI_vs_20_PPI_vs_30_PPI_Ceramic_Foam_Filters\"><\/span>40 PPI vs 20 PPI vs 30 PPI Ceramic Foam Filters<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div id=\"attachment_9632\" style=\"width: 2570px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-9632\" class=\"size-full wp-image-9632\" src=\"https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2026\/09\/different-ppi-of-CFF-scaled.webp\" alt=\"different ppi of CFF\" width=\"2560\" height=\"1273\" srcset=\"https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2026\/09\/different-ppi-of-CFF-scaled.webp 2560w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2026\/09\/different-ppi-of-CFF-300x149.webp 300w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2026\/09\/different-ppi-of-CFF-1024x509.webp 1024w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2026\/09\/different-ppi-of-CFF-768x382.webp 768w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2026\/09\/different-ppi-of-CFF-1536x764.webp 1536w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2026\/09\/different-ppi-of-CFF-2048x1018.webp 2048w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2026\/09\/different-ppi-of-CFF-18x9.webp 18w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\" \/><p id=\"caption-attachment-9632\" class=\"wp-caption-text\"><em>different ppi of CFF<\/em><\/p><\/div>\n<p>Different PPI grades provide different pore structures and should be evaluated together with filter dimensions and operating conditions.<\/p>\n<table>\n<thead>\n<tr>\n<th>Filter Grade<\/th>\n<th>Relative Pore Structure<\/th>\n<th>Typical Consideration<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>20 PPI<\/td>\n<td>Coarser<\/td>\n<td>Higher flow capacity; suitable for applications with less demanding filtration requirements<\/td>\n<\/tr>\n<tr>\n<td>30 PPI<\/td>\n<td>Orta<\/td>\n<td>Balance between filtration and flow capacity<\/td>\n<\/tr>\n<tr>\n<td>40 PPI<\/td>\n<td>Finer<\/td>\n<td>Suitable when improved inclusion removal is required<\/td>\n<\/tr>\n<tr>\n<td>50\u201360 PPI<\/td>\n<td>Finer still<\/td>\n<td>Used where tighter filtration requirements justify greater flow resistance<\/td>\n<\/tr>\n<tr>\n<td>80 PPI<\/td>\n<td>Very fine<\/td>\n<td>Specialized applications requiring a fine filtration structure<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>This table describes the relative filtration structure rather than guaranteeing a particular inclusion-removal rate.<\/p>\n<p>The actual PPI selection should consider filter size, metal flow rate, casting duration, alloy, melt cleanliness, and allowable pressure drop.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_Do_You_Select_the_Right_Size_of_40_PPI_CFF\"><\/span>How Do You Select the Right Size of 40 PPI CFF?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>PPI is only one part of filter selection.<\/p>\n<p>\u015eu <strong>filter dimensions and effective filtration area<\/strong> must be matched to the molten aluminum flow rate.<\/p>\n<p>Important parameters include:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Metal_Flow_Rate\"><\/span>Metal Flow Rate<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Higher flow rates generally require sufficient filter area to avoid excessive flow resistance.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Casting_Duration\"><\/span>Casting Duration<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The filter must maintain acceptable performance throughout the required casting period.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Inclusion_Load\"><\/span>Inclusion Load<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A melt containing a high concentration of inclusions can block a fine-pore filter more quickly.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Filter_Thickness\"><\/span>Filter Thickness<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A thicker filter provides a longer filtration path but also affects flow resistance.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Filter_Area\"><\/span>Filter Area<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A larger effective filtration area can support higher throughput and longer service under appropriate conditions.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Filter_Box_Design\"><\/span>Filter Box Design<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The filter must fit the filter chamber and be correctly sealed to prevent molten aluminum from bypassing the ceramic medium.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Where_Is_a_40_PPI_Ceramic_Foam_Filter_Used\"><\/span>Where Is a 40 PPI Ceramic Foam Filter Used?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>40 PPI CFF can be used in aluminum casting applications where molten-metal cleanliness is important.<\/p>\n<p>Tipik uygulama alanlar\u0131 \u015funlard\u0131r:<\/p>\n<ul>\n<li>Al\u00fcminyum k\u00fct\u00fck d\u00f6k\u00fcm\u00fc<\/li>\n<li>Aluminum slab casting<\/li>\n<li>S\u00fcrekli d\u00f6k\u00fcm<\/li>\n<li>Al\u00fcminyum \u00e7ubuk \u00fcretimi<\/li>\n<li>Al\u00fcminyum ala\u015f\u0131ml\u0131 d\u00f6k\u00fcm<\/li>\n<li>Foundry casting<\/li>\n<li>Recycled aluminum processing<\/li>\n<li>Other applications requiring non-metallic inclusion removal<\/li>\n<\/ul>\n<p>The appropriate filter grade depends on the product specification and casting process.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Where_Is_the_Ceramic_Foam_Filter_Installed\"><\/span>Where Is the Ceramic Foam Filter Installed?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div id=\"attachment_9669\" style=\"width: 937px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-9669\" class=\"wp-image-9669\" src=\"https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2021\/07\/DSC_0591-scaled.jpg\" alt=\"seramik k\u00f6p\u00fck filtre\" width=\"927\" height=\"618\" srcset=\"https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2021\/07\/DSC_0591-scaled.jpg 2560w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2021\/07\/DSC_0591-300x200.jpg 300w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2021\/07\/DSC_0591-1024x683.jpg 1024w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2021\/07\/DSC_0591-768x512.jpg 768w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2021\/07\/DSC_0591-1536x1024.jpg 1536w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2021\/07\/DSC_0591-2048x1365.jpg 2048w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2021\/07\/DSC_0591-18x12.jpg 18w\" sizes=\"auto, (max-width: 927px) 100vw, 927px\" \/><p id=\"caption-attachment-9669\" class=\"wp-caption-text\"><em>seramik k\u00f6p\u00fck filtre<\/em><\/p><\/div>\n<p>A ceramic foam filter is normally installed downstream of major melt-treatment operations and before the casting point.<\/p>\n<p>A typical process is:<\/p>\n<p><strong>Melting \u2192 Holding \u2192 Refining \u2192 Degassing \u2192 CFF Filtration \u2192 Launder \u2192 Casting<\/strong><\/p>\n<p>In some production lines, filtration may be combined with other filtration stages.<\/p>\n<p>For example, an aluminum slab casting line may use:<\/p>\n<p><strong>Melting Furnace \u2192 Holding Furnace \u2192 On-Line Degassing \u2192 CFF Filter Box \u2192 Grain Refinement \u2192 LHC Casting<\/strong><\/p>\n<p>The exact sequence depends on the equipment configuration and metallurgical requirements.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Does_a_40_PPI_CFF_Remove_Hydrogen\"><\/span>Does a 40 PPI CFF Remove Hydrogen?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>No.<\/strong><\/p>\n<p>A ceramic foam filter primarily removes suspended non-metallic inclusions. It does not directly remove dissolved hydrogen from molten aluminum.<\/p>\n<p>Hydrogen is normally reduced through <strong>on-line rotary degassing<\/strong>, in which fine inert-gas bubbles provide a route for dissolved hydrogen to transfer out of the molten metal.<\/p>\n<p>Therefore, when both hydrogen and inclusions are concerns, degassing and filtration should be considered as complementary treatments.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Can_CFF_Reduce_Porosity_in_Aluminum_Castings\"><\/span>Can CFF Reduce Porosity in Aluminum Castings?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>CFF can help reduce <strong>inclusion-related defects<\/strong>, but it should not be described as a direct solution for hydrogen porosity.<\/p>\n<p>Hydrogen porosity is primarily associated with dissolved hydrogen and its reduced solubility during solidification.<\/p>\n<p>A typical approach is:<\/p>\n<p><strong>Degassing \u2192 Reduce dissolved hydrogen<\/strong><\/p>\n<p><strong>Filtration \u2192 Remove non-metallic inclusions<\/strong><\/p>\n<p>Controlling moisture, melt temperature, turbulence, and other process conditions is also important for controlling casting defects.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_Ceramic_Material_Is_Used_for_a_40_PPI_Filter\"><\/span>What Ceramic Material Is Used for a 40 PPI Filter?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The ceramic material should be selected according to the metal, operating temperature, chemical environment, and required filtration performance.<\/p>\n<p>For molten aluminum applications, <strong>al\u00fcmina bazl\u0131 seramik k\u00f6p\u00fck filtreler<\/strong> are commonly used because of their high-temperature stability and compatibility with aluminum casting conditions.<\/p>\n<p>AdTech supplies ceramic foam filters in different PPI grades and sizes for aluminum casting applications.<\/p>\n<p>The actual material and specification should be selected according to the customer&#8217;s casting conditions.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_Should_a_40_PPI_Ceramic_Foam_Filter_Be_Installed\"><\/span>How Should a 40 PPI Ceramic Foam Filter Be Installed?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Correct installation is important because molten aluminum must pass through the ceramic filter without bypassing it.<\/p>\n<p>The basic requirements include:<\/p>\n<ol>\n<li>Select the correct filter size and PPI.<\/li>\n<li>Ensure the filter box is clean and in suitable condition.<\/li>\n<li>Preheat the filter and filtration chamber according to the supplier&#8217;s instructions.<\/li>\n<li>Position the filter correctly in the filter seat.<\/li>\n<li>Ensure the sealing system is properly installed.<\/li>\n<li>Avoid mechanical damage to the ceramic filter.<\/li>\n<li>Start molten-metal flow under controlled conditions.<\/li>\n<\/ol>\n<p>The specific preheating temperature, heating rate, and installation procedure should follow the filter and filter-box manufacturer&#8217;s instructions.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_Causes_a_40_PPI_Ceramic_Foam_Filter_to_Block\"><\/span>What Causes a 40 PPI Ceramic Foam Filter to Block?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Filter blockage generally occurs when inclusions accumulate within the ceramic pore structure faster than the filter can maintain the required flow.<\/p>\n<p>Common contributing factors include:<\/p>\n<ul>\n<li>High inclusion concentration<\/li>\n<li>Excessive dross carryover<\/li>\n<li>Poor upstream melt cleanliness<\/li>\n<li>Filter area that is too small<\/li>\n<li>Excessively fine PPI for the application<\/li>\n<li>Excessive casting flow rate<\/li>\n<li>Long casting duration<\/li>\n<li>Incorrect filter installation<\/li>\n<\/ul>\n<p>If a 40 PPI filter blocks too quickly, simply switching to a lower PPI is not always the correct solution.<\/p>\n<p>The plant should first determine whether the underlying problem is <strong>melt cleanliness, filter area, flow rate, filter specification, or upstream process control<\/strong>.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"40_PPI_Ceramic_Foam_Filter_for_Aluminum_Casting\"><\/span>40 PPI Ceramic Foam Filter for Aluminum Casting<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>AdTech manufactures ceramic foam filters for molten aluminum filtration in different PPI grades and dimensions.<\/p>\n<p>The filters can be supplied for use with AdTech filter boxes or compatible filtration systems.<\/p>\n<p>Depending on the application, AdTech can provide:<\/p>\n<ul>\n<li>Different PPI grades<\/li>\n<li>Customized dimensions<\/li>\n<li>Al\u00fcmina seramik k\u00f6p\u00fck filtreler<\/li>\n<li>Filter gaskets and sealing materials<\/li>\n<li>Matching CFF filter boxes<\/li>\n<li>Filtration system recommendations<\/li>\n<li>Samples for evaluation<\/li>\n<\/ul>\n<p>The filter should be selected according to the customer&#8217;s alloy, metal flow rate, casting process, required filtration level, and available filter-box dimensions.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_Information_Is_Needed_to_Select_a_40_PPI_CFF\"><\/span>What Information Is Needed to Select a 40 PPI CFF?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>For filter selection, provide as much of the following information as possible:<\/p>\n<table>\n<thead>\n<tr>\n<th>Required Information<\/th>\n<th>Neden \u00d6nemli?<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Al\u00fcminyum ala\u015f\u0131m\u0131<\/td>\n<td>Determines process conditions<\/td>\n<\/tr>\n<tr>\n<td>Metal flow rate<\/td>\n<td>Determines required filtration capacity<\/td>\n<\/tr>\n<tr>\n<td>Casting time<\/td>\n<td>Affects filter loading<\/td>\n<\/tr>\n<tr>\n<td>Melt temperature<\/td>\n<td>Determines thermal requirements<\/td>\n<\/tr>\n<tr>\n<td>Current PPI<\/td>\n<td>Helps evaluate the existing system<\/td>\n<\/tr>\n<tr>\n<td>Filter dimensions<\/td>\n<td>Determines compatibility<\/td>\n<\/tr>\n<tr>\n<td>Filter-box dimensions<\/td>\n<td>Ensures proper installation<\/td>\n<\/tr>\n<tr>\n<td>Current filtration problems<\/td>\n<td>Helps identify the cause<\/td>\n<\/tr>\n<tr>\n<td>Inclusion level<\/td>\n<td>Helps determine filtration requirements<\/td>\n<\/tr>\n<tr>\n<td>Required metal cleanliness<\/td>\n<td>Determines filtration target<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>With this information, the 40 PPI filter can be evaluated against other PPI grades instead of being selected based only on the nominal pore number.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"40_PPI_Ceramic_Foam_Filter_Manufacturer\"><\/span>40 PPI Ceramic Foam Filter Manufacturer<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div id=\"attachment_6620\" style=\"width: 510px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-6620\" class=\"wp-image-6620 size-full\" src=\"https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2021\/07\/40PPI-Ceramic-Foam-Filter-2.jpg\" alt=\"40 PPI Seramik K\u00f6p\u00fck Filtre\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2021\/07\/40PPI-Ceramic-Foam-Filter-2.jpg 500w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2021\/07\/40PPI-Ceramic-Foam-Filter-2-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><p id=\"caption-attachment-6620\" class=\"wp-caption-text\"><em>40 PPI Seramik K\u00f6p\u00fck Filtre<\/em><\/p><\/div>\n<p>AdTech \u00fcreticileri <strong>erimi\u015f al\u00fcminyumun s\u00fcz\u00fclmesi i\u00e7in seramik k\u00f6p\u00fck filtreler<\/strong>, together with compatible filter boxes and other aluminum melt-treatment equipment.<\/p>\n<p>Our ceramic foam filters are available in different pore grades and customized dimensions for aluminum casting applications.<\/p>\n<p>For a 40 PPI CFF quotation, provide the required filter dimensions, aluminum alloy, metal flow rate, casting process, and existing filter-box information.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"FAQ\"><\/span>S\u0131k Sorulan Sorular<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<details>\n<summary>1. What is a 40 PPI ceramic foam filter?<\/summary>\n<p>A 40 PPI ceramic foam filter is a porous ceramic filtration medium with a nominal pore density of 40 pores per inch, used primarily to remove non-metallic inclusions from molten aluminum.<\/p>\n<\/details>\n<details>\n<summary>2. What does 40 PPI mean?<\/summary>\n<p>PPI means pores per inch. It describes the relative pore density of the ceramic foam filter.<\/p>\n<\/details>\n<details>\n<summary>3. Is 40 PPI finer than 30 PPI?<\/summary>\n<p>Yes. In general, a 40 PPI filter has a finer pore structure than a 30 PPI filter.<\/p>\n<\/details>\n<details>\n<summary>4. Is 40 PPI better than 20 PPI?<\/summary>\n<p>Not necessarily. The appropriate PPI depends on metal flow rate, inclusion load, required cleanliness, filter area, and casting conditions.<\/p>\n<\/details>\n<details>\n<summary>5. Can a 40 PPI filter remove hydrogen?<\/summary>\n<p>No. Dissolved hydrogen is primarily reduced through degassing rather than ceramic foam filtration.<\/p>\n<\/details>\n<details>\n<summary>6. Can a 40 PPI CFF reduce aluminum casting defects?<\/summary>\n<p>It can help reduce defects associated with non-metallic inclusions. Other defects, such as hydrogen porosity, require additional process controls and melt treatment.<\/p>\n<\/details>\n<details>\n<summary>7. What aluminum products can use a 40 PPI CFF?<\/summary>\n<p>Applications can include aluminum billets, slabs, rods, continuous cast products, and other aluminum castings where inclusion removal is required.<\/p>\n<\/details>\n<details>\n<summary>8. Does a higher PPI always provide better filtration?<\/summary>\n<p>No. Higher PPI generally means a finer pore structure, but it can also increase flow resistance and may block more quickly when the melt has a high inclusion load.<\/p>\n<\/details>\n<details>\n<summary>9. Can the size of a 40 PPI CFF be customized?<\/summary>\n<p>Yes. Ceramic foam filters can be manufactured in different dimensions according to the filter box and casting system.<\/p>\n<\/details>\n<details>\n<summary>10. Can AdTech provide a filter box for a 40 PPI CFF?<\/summary>\n<p>Yes. AdTech can supply ceramic foam filters together with compatible CFF filter boxes and other molten aluminum filtration equipment.<\/p>\n<\/details>","protected":false},"excerpt":{"rendered":"<p>40 PPI Ceramic Foam Filter for Molten Aluminum A 40 PPI ceramic foam filter (CFF) is a porous ceramic filter used to remove suspended non-metallic inclusions from molten aluminum before casting. With approximately 40 pores per inch, it provides a finer filtration structure than lower-PPI filters and can be selected when the casting process requires [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":6620,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[44],"tags":[],"class_list":["post-6615","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ceramic-foam-filter"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>40PPI Ceramic Foam Filter, Metal Filtering with CFF<\/title>\n<meta name=\"description\" content=\"40PPI Ceramic Foam Filter allows the molten aluminum metal in the aluminum melting and casting workshop to flow smoothly into the surface.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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