船用铝青铜直角截止阀体的铸造工艺改进

Casting Process Improvement of Marine Aluminum Bronze Right Angle Stop Valve Body

用于舰船上的直角式截止阀体,材质为铝青铜ZCuAl9Mn2,要求以4.0 MPa进行水压试验。介绍了铝青铜ZCuAl9Mn2的铸造特性。铝青铜阀体件铸造,因缺乏成熟的工艺模式,在试制过程中遇到了很大困难。首制时在水压试验中整批发生渗漏;在改进工艺后,生产的铝青铜阀体铸件在水压试验中仍然整批发生渗漏。经过不断铸造工艺优化,有效地解决了该阀体的渗漏难题,现已生产出多批质量良好的直角式截止阀体铸件。

It is used for right angle cut-off valve body on the ship,which is made of aluminum bronze ZCuAl9Mn2,and it is required to conduct hydraulic test at 4.0 MPa.The casting characteristics of the aluminum bronze ZCuAl9Mn2 were introduced.Due to the lack of mature technology mode,the aluminum bronze body casting has encountered great difficulties in the trial production.During the first production,the whole batch of leakage occurred during the hydraulic test.In the production after the improvement of the process,the whole batch of the leakage still occurred in the hydraulic test.After continuous trial production and modification,the casting technology has been improved,and the leakage problem of the valve body has been solved effectively.Many batches of right angle cut-off valve castings with good quality have been produced.