新型柱塞泵泵盖铸造工艺与研制  

Casting Technology and Development of New Type Piston Pump Cover

作　　者：赵颖烈 ZHAO Ying-lie(Taiyuan Heavy Machinery Group Yuci Hydraulic Industry Co.,Ltd.,Jinzhong 030600,China)

机构地区：[1]太重集团榆次液压工业有限公司,山西晋中030600

出　　处：《液压气动与密封》2022年第10期6-9,共4页Hydraulics Pneumatics & Seals

摘　　要：新型工程柱塞泵泵盖铸件的结构特殊,由于泵盖内部有细长且交错的油道,其次泵盖铸件材料为球墨铸铁,因此铸件浇注时内部容易出现油道砂芯断裂、砂芯变形、缩松和气孔缺陷,铸造工艺上保证内部空腔残留铸砂的清洁也是难点。由于此类泵盖较为少见,基于对泵盖的结构进行铸造工艺可行性分析和工艺方案设计,预先进行铸造方案的虚拟仿真验证,确定最终工艺方案后进行浇注试制,首次浇注验证泵盖合格,客户加工装试满足工况条件,成功研制出新型柱塞泵泵盖铸件。The new type of engineering piston pump cover casting has special structure. As there are long and thin oil passage branches inside the pump cover, the internal structure of the pump cover casting is similar to the hydraulic valve body, and the material of the pump cover casting is nodular cast iron, so the internal oil passage is prone to fracture, deformation, shrinkage and porosity, at the same time, it is difficult to clean the residual casting sand in the internal cavity. As such pump covers are rare, based on the feasibility analysis of the casting process and the design of the process scheme for the structure of the pump cover, the virtual simulation verification of the casting scheme is carried out in advance. After the final process is determined, the mold is made for pouring. The first pouring verifies that the pump cover is qualified, and the customer’s processing and assembly meet the working conditions. A new type of piston pump cover casting is successfully developed.

关 键 词：铸造工艺性分析 工艺设计与仿真验证 铸件研制合格 

分 类 号：TH137[机械工程—机械制造及自动化]