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當前位置:脫蠟鑄造法有兩大類
[來源:www.voipblast.net] [作者:精密鑄造] [日期:17-02-10]
脫蠟鑄造法有兩大類:實心模法和陶殼模法,后者為前者的改良法。實心模法系在考慮蠟型的冷凝收縮量,鑄模的加熱膨脹量和熔融金屬的冷凝收縮量之后,制作與最終鑄件尺寸近似的模具。將融化的蠟質押灌注入此以金屬或硅膠做成之模具內,取出蠟型后,浸入微粉耐火材料與粘結劑混泡而成之漿液。滴凈之后,撒布粗粒耐火材料,使之干燥。放入鑄框,將混練有粘結劑的耐火物粒填滿之,然后干燥。接著加熱使蠟質熔化流出來,作成鑄模。以高溫加熱鑄模,燒除少量殘余之蠟質并提高其強度,接著注入金屬熔液。陶殼模法直到蠟型的制作都跟實心模法相同,只是在一次沾漿和淋砂(或浮砂)之后,并不進行包模作業,而是反復多次地進行沾漿和淋砂,直至獲得預定的外殼厚度。干燥、加熱、熔流出蠟質,高溫加熱再行澆注,這種方法為目前的脫蠟精密鑄造業者所廣泛采用 Lost wax casting method has two kinds: solid model method and the ceramic shell mold method, the improved method of the latter to the former. Solid model law considering wax type condensing shrinkage, mould heating expansion and the condensing shrinkage of molten metal, production and final approximation of mould casting size. Will melt wax infuse the pledge to within the mold of metal or silicon, remove the wax type, immersed in micro powder, refractory materials and binder bubble and into the slurry. After the net drop, and coarse cloth, refractory dry. Cast into the box, to practice a mixed binder of refractory grain filling, then dry. Then heating melt wax out, make molds. With high temperature heating mold, burning a small amount of residual wax and increase its strength, and then into the molten metal. Ceramic shell mould method with solid type until the wax production mode method is the same, just in a moistening slurry and spray sand (or float sand), not BaoMo operations, but is repeatedly and moistening slurry spray sand, until get the shell thickness. Dry flow, heating, melting wax, high temperature heating again pouring, the method for the lost wax precision casting industry widely used
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