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一、前言某铝合金件压铸模浇口套由3Cr2W8V钢制成,使用中常因粘模而失效。以前,经常规热处理(淬火+低温回火)后使用时,工作寿命很低,一般只能压铸几百只零件,这就造成了合金材料、工时和资金的严重浪费,加长了生产周期,而且因浇口套工作温度较高(铝合金压铸温度高达650℃),停机换模时,劳动强度极大,劳动条件恶劣,因此,如何提高浇口套的寿命已成了生产中必须解决的问题。
First, the foreword A die cast aluminum alloy sprue sleeve made of 3Cr2W8V steel, the use often due to sticky mold failure. Previously, the conventional heat treatment (quenching + low temperature tempering) after use, the working life is very low, the general can only die-casting hundreds of parts, which resulted in a serious waste of alloy materials, working hours and capital, lengthen the production cycle, and Due to the high working temperature of the sprue bushing (aluminum alloy die-casting temperature up to 650 ℃), labor-intensive and labor-intensive when the machine is shut down for mold change, therefore, how to improve the service life of the sprue bushing has become a problem that must be solved in production .