高温合金真空低压铸造技术研究进展

Research Progress of Vacuum Low Pressure Casting Technology for Superalloys

高温合金等轴晶铸件广泛应用于航空航天领域,其结构复杂化、尺寸精确化和薄壁轻质化对高温合金精密铸造技术提出了更高要求。真空低压铸造技术适用于生产优质高温合金复杂薄壁件,综述了高温合金反重力铸造技术研究现状,介绍了真空低压铸造技术原理及特点和高温合金真空低压铸造技术在国内的研究进展。

The superalloy equiaxed grain castings are widely applied to aerospace fields.Due to their complicated structure,precise dimension and thin wall thickness as well as light weight,the requirements for the investment casting technologies for superalloys are very high and constantly becoming increasingly strict,The vacuum low pressure casting(VLPC)is appropriate for producing complicated and thin-walled superalloy castings.The paper reviews the present research status of counter-gravity casting(CGC)technology for superalloys both at home and abroad,and introduces the working principle and characteristic of VLPC technology as well as the new research progress of domestic VLPC technology for superalloys.