(1) New process methods are developing rapidly. Such as single crystal hollow blade precision casting, powder superalloy turbine disk superplastic forging, spray deposition forming and thermal insulation coating technology;
(2) Conventional thermal processing technology is gradually being transformed by modern technology. The ancient techniques of forging, casting, welding, heat, surface treatment and other technologies have been introduced into computers, vacuum and laser technology, and have been transformed into high-tech;
(3) There are more and more interpenetrating disciplines or combinations into composite forming processes. Such as superplastic forming / diffusion bonding and deformation heat treatment technology;
(4) The simulation technology of the thermal process is generally applied. Such as the numerical simulation of the solidification casting process of castings, the numerical simulation of the formation and prediction of forgings and casting defects, and the techniques of laser rapid prototyping;
(5) The hot processing technology and the new structure of the product develop simultaneously. Thermal processing techniques such as friction welding, hot isostatic pressing and liquid phase diffusion welding are developed simultaneously with new structures such as the overall turbine rotor, the integral blade disc structure and the large sandwich structure fan blades and split blades;
(6) New process methods and new materials are developed simultaneously. Such as hot isostatic pressing and superplastic forging, simultaneous development of powder superalloy and liquid metal rapid cooling rolling and amorphous materials;
(7) The processing materials (Processing Materials) play an increasingly important role in the thermal processing process. Such as titanium alloy forging glass lubricants, casting cores and shell materials and coatings.
2 Air thermal processing technology development priorities <br> <br> according to the development trend of China's aviation industry in the development needs of the new century and thermal processing technology, and advanced fourth generation fighter for civil aircraft and supporting high thrust-weight ratio and engine The demand for thermal processing technology on airborne equipment, and considering the development of the discipline, it is recommended that the following aviation thermal processing technologies be developed at the beginning of the next century:
(1) Advanced casting technology. Research on complex structure blade precision casting technology, high temperature resistant core and shell material and its precision preparation technology and coating technology, and supporting electron beam physical vapor deposition (EB-PVD) to explore the efficient cooling of working temperature 2000~2100K Single crystal blade manufacturing technology; research on titanium alloy machine å¶ç‰‡-blade overall structural parts precision casting technology, high-temperature alloy machine 匣 precision casting technology, aluminum alloy lip and accessory shell and other large structural parts precision casting technology, large thin-wall high-strength wax type And shell-type manufacturing technology and coating technology, numerical simulation technology of casting process, etc., to fully grasp the precision casting technology of large-scale thin-walled structural parts. In order to meet the needs of the industrial production of aircraft and its engine parts in the research and development, the application of titanium alloy whole machine precision casting technology and its corresponding supporting technology will be promoted to develop the single crystal combined blade batch production technology and its corresponding supporting technology.
(2) Superplasticity and precision forging technology. Numerical simulation technology for stress and rheological field in superplastic forging of powder superalloy discs (including spray-formed disc blanks), preparation technology of super-plastic forging blanks for powder superalloy discs and forging process, superplastic forging die and lubrication Technology, so as to fully grasp the superplastic forging technology of powder superalloy discs; explore the vacuum superplastic forging technology of powder superalloy turbine discs. Developed titanium alloy structural parts, compressor discs and large blades for the demand for industrial production of aircraft and its engine typical parts, and the application of titanium alloy blade mechanical press constant load precision forging batch production technology, lubrication and measurement technology. The isothermal die forging technology develops a large-scale forging stepwise die forging technique with a projected area of ​​more than 1 m2.
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