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分析了薄壁液压壳体的结构特点及性能特点,对其进行了铸造工艺设计。采用设计的壳体铸造工艺进行了试生产,并根据铸件的加工性能要求,对铸件进行了热处理。结果表明,铸造工艺设计合理,热处理后的产品性能满足技术要求,没有出现缩孔、缩松、气孔、砂眼及渣孔等缺陷;经过30 MPa打压测试,铸件没有出现渗漏。
The structural characteristics and performance characteristics of the thin-walled hydraulic shell are analyzed, and the casting process design is carried out. The design of the shell casting process for the pilot production, and according to the casting performance requirements, the castings were heat treatment. The results show that the design of the casting process is reasonable and the performance of the product after heat treatment meets the technical requirements. No defects such as shrinkage cavity, shrinkage, stomata, sand hole and slag hole appear. After 30 MPa compression test, no leakage occurs in the castings.