\u0646\u0638\u0627\u0645 \u0627\u0644\u063a\u0633\u064a\u0644<\/a> is preferably made so thick that the temperature of the outer surface of its bottom is within a range of 600 to 900\u00b0 C. The molten aluminum penetrates the porous refractory lining and solidifies therein, forming a fixed layer of aluminum in the lining in a place, where the temperature is in the area of the solidification point of aluminum.<\/p>\nAccordingly, it is preferable to make the refractory lining so thick and to arrange the heat insulation of the launder so that, in the operating state, the temperature range that corresponds to the solidification point of aluminum is inside the refractory lining. In some other embodiments of casting launder, molten copper, zinc or metal alloy flows in the launder, whereby the insulations of the launder are constructed to correspond to the melting temperatures of these metals.<\/p>","protected":false},"excerpt":{"rendered":"
In the launder construction, the molten metal flows. The cross-section of the launder for casting molten metal is a U-shape that opens and widens upwards. The inner surface of the launder, which is in contact with the molten metal, is defined by refractory material, such as a ceramic wearing composition. A suitable material is a […]<\/p>\n","protected":false},"author":1,"featured_media":5625,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[939],"tags":[],"class_list":["post-5624","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ceramic-launder"],"yoast_head":"\n
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<\/p>\n