High temperature alloy is a metal material with high temperature resistance, high strength, and good corrosion resistance, widely used in aerospace, energy, chemical, and other fields. Precision castings are one of the important processes in the manufacture of superalloys. This article will introduce the research on the preparation technology of superalloy precision castings.
1、 Classification of Preparation Techniques for High Temperature Alloy Precision Castings
Vacuum investment casting technology
This technology is to heat a pre prepared ceramic mold and a superalloy material under vacuum conditions to a molten state, and then cool and solidify them to form parts. This technology can produce high-precision, high-quality components, and reduce the content of impurities and oxides.
Investment casting technology
This technology involves heating a pre prepared metal mold and a superalloy material under high temperature conditions to a molten state, and then cooling and solidification to form parts. This technology can produce large and complex shaped components, but it is also prone to defects and deformation issues.
Low pressure investment casting technology
This technology involves injecting high-temperature alloy materials into a pre prepared ceramic mold under vacuum or pressure to form components. This technology can reduce the content of impurities and oxides, and can produce components with complex shapes, but it also has problems such as high manufacturing difficulty.
2、 Advantages and Problems of Preparation Technology for High Temperature Alloy Precision Castings
1. Advantages
The preparation technology of superalloy precision castings has advantages such as high product accuracy, high material utilization, short manufacturing cycle of parts, and strong adaptability. Especially for difficult to process materials such as superalloys, it has unique manufacturing advantages.
Existing problems
There are still some problems in the preparation technology of superalloy precision castings, such as short mold life, high cost, and prone to defects and deformation. In addition, it is necessary to further study and improve the surface defects such as burrs, pores, and shrinkage holes in precision castings to improve the performance and quality stability of components.
3、 Research Direction of Preparation Technology for High Temperature Alloy Precision Castings
1. Mold material and preparation technology
Currently, the manufacturing cost of precision castings is mainly concentrated in the mold, so it is necessary to research and develop new mold materials and preparation technologies to improve the life and efficiency of the mold.
2. Precision casting process control and optimization
In order to avoid defects and deformation, it is necessary to conduct in-depth research and analysis on the precision casting process to optimize the production process, improve manufacturing efficiency, and reduce manufacturing costs.
3. Research on surface treatment technology
As the surface quality of precision castings directly affects their performance and appearance, it is necessary to research and develop efficient and economical surface treatment technologies, and continuously improve and perfect existing surfaces
Post time: Mar-22-2023
