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锌基低熔点合金是一种新的模具材料。近年来,我们在学习各单位经验的基础上,逐步突破了锌基合金的熔炼、制模工艺,并用锌基合金模代替碳素工具钢及合金钢模,完成了炼厂一些备件(如仪表垫片,塔盘卡子,各种较复杂的异形垫片等)的制作,取得了较好的经济效果。随着锌基合金模具的推广,可以预计,锌基合金在炼油厂建设中的应用会越来越广泛。锌基合金是以锌为基体的锌铜铝三元合金。其成分比例为:铜3～3.5％,铝4～4.2％,镁0.03～0.05％,锌92～93％。首先要熔炼中间合金(即铜—铝二元合
Zinc-based low melting point alloy is a new mold material. In recent years, based on the experience of all units, we have gradually broken the melting and molding process of zinc-based alloys and replaced the carbon tool steel and alloy steel mold with zinc-based alloy molds to complete the refinery’s spare parts such as instruments Gaskets, tray clamps, all kinds of more complex shaped shims, etc.) production, and achieved good economic results. With the promotion of zinc-based alloy molds, it is expected that the application of zinc-based alloys in refinery construction will be more and more widespread. Zinc-based alloy is a zinc-based zinc-copper-aluminum ternary alloy. The composition ratio is as follows: 3 to 3.5 percent of copper, 4 to 4.2 percent of aluminum, 0.03 to 0.05 percent of magnesium, and 92 to 93 percent of zinc. The first to smelt the master alloy (that is, copper - aluminum binary combination