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我公司自2008年开始采用消失模铸造工艺生产各类变速箱壳盖类铸件,本文浅析近3年来解决铸件夹砂缺陷所采取的工艺措施和应注意的细节。1浇口杯质量的影响公司自采用消失模铸造工艺起,一直使用浙江某耐火材料厂的浇口杯,其耐火度一直保持在1 550℃以上。其中2010年12月~2011年1月期间采购的浇口杯质量不稳定,耐火度和强度明显不够,表现在浇注过程中
Since 2008, our company has adopted EPC technology to produce all kinds of gearbox cover castings. This paper analyzes the process measures and details that should be paid attention to in the past 3 years to solve the problem of sand casting defects. 1, the impact of the quality of the gate cup Since the company has adopted the lost foam casting process, has been using a refractory plant in Zhejiang pouring cup, the fire resistance has been maintained at more than 1 550 ℃. Among them, the quality of the pouring cup purchased from Dec. 2010 to Jan. 2011 was unstable, and the refractoriness and strength were obviously not enough, which was manifested in the pouring process