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对加工出的汽车覆盖件模具模样进行了质量、尺寸精度对比分析,相较于原有设备与工艺,新设备与工艺加工出的模样质量高,尺寸精度提高一倍;利用铸造模拟软件优化确定了最终铸造工艺方案;运用干砂负压工艺并采取先烧后浇、振动结晶等措施取代原有的树脂砂实型铸造工艺,铸造出了此套结构较复杂的模具铸件;经检测,铸件表面质量良好,尺寸精度达到CT7~CT8,加工区域无缺陷,亦没有出现增碳。
Compared with the original equipment and technology, the new equipment and technology processed the appearance of high quality, dimensional accuracy doubled; the use of casting simulation software to optimize the determination of The final casting process scheme; the use of dry sand vacuum process and take the first after burning, vibration crystallization and other measures to replace the existing resin sand real casting process, casting a set of more complex mold casting; after testing, casting Surface quality is good, dimensional accuracy of CT7 ~ CT8, processing area without defects, there is no increased carbon.