铸造2018，Vol.67Issue(6)：542-545,4.
锡青铜双吸式离心泵体的砂型铸造工艺
Sand Casting Process for Double Suction Centrifugal Pump Body Made of Tin Bronze
摘要
Abstract
Double suction centrifugal pump body is made of tin bronze ZCuSn3Zn8Pb6Ni1, and it has a complicated structure. For the centrifugal pump body, leakage is not allowed under the pressure of 3.5 MPa for 5 min in the hydraulic test. In the paper, based on the casting properties of tin bronze and the structural characteristics of the body, the casting defects such as dispersed shrinkages, shrinkage cracks and pores were analyzed, and the technology of sand casting process with horizontally molding and vertically pouring adopted at the early stage of production was introduced. In the recent production of the pump body, the casting process has been improved, and the sand casting process with horizontally molding and pouring was adopted, which has remarkable advantages: the casting quality is good. Although the yield of the improved process is slightly lower than that of the casting process with horizontally molding and vertically pouring, the rate of the pump leakage is reduced, and the molding operation is simple and convenient, furthermore, there are no special requirements on the sand boxes . So the production efficiency is greatly improved.关键词
锡青铜/离心泵体/砂型铸造/缺陷防止Key words
tin bronze/centrifugal pump body/sand casting/defect prevention分类
矿业与冶金引用本文复制引用
吴星,黄力,杨为勤,杨超..锡青铜双吸式离心泵体的砂型铸造工艺[J].铸造,2018,67(6):542-545,4.基金项目
广西科技攻关项目(桂科AB16380310) （桂科AB16380310）
广西柳州市柳江区科技攻关项目(201701) （201701）
广西教育厅项目(2017KY1053). （2017KY1053）
