Vacuum quenching technology is a difficult technology in heat treatment processing. It is the best process for heat treatment of high-strength steel workpieces. This is also the key research topic in heat treatment production of the 519 factory of China Aerospace Science and Technology Corporation. Recently, the plant's nine-point factory, which is responsible for heat treatment and processing, has transformed the practice of scientific development concept into a driving force to solve production problems. The organization has been able to carry out technological breakthroughs and finally achieved new breakthroughs in vacuum quenching technology.
The use of vacuum quenching technology, the biggest advantage is that the processed parts can be directly quenched, the produced products not only small deformation, less oxidation, stable quality, and high efficiency, can effectively reduce the risk of machining production. The factory set up a vacuum quenching process research team consisting of heat treatment technicians, senior technicians and first-line production backbone workers. The team members focused on the bold practice, carefully studied the working principle of the vacuum quenching furnace, and consulted a large number of technical and technical materials. Ten sets of experiments, obtained a large number of valuable technical parameters, accurately grasped the principle of radiation heat transfer under vacuum, heating and cooling of workpieces, scientific furnace loading methods, etc., and compiled a set of highly operational vacuum quenching Process.
In order to verify the actual effect of this new process, the research team selected a representative component stud bolt for production simulation test. Stud parts seem simple in shape, but the mechanical properties are extremely high, which plays a vital role in the product. It must be supplemented by its plasticity and toughness while taking into account its strength and hardness. In the past production process, the factory extended the high-strength steel workpieces such as studs to the first quenching and tempering, and then quenched in the salt furnace. Finally, the traditional process of the machining process was completed. The hardness of the workpiece after heat treatment was high. The processing and production is difficult, the stress generated by the processing is large, and the product quality is difficult to guarantee. In the test process, the research team first started from the heating method of the workpiece, and developed special tooling to ensure the uniformity of heating and cooling of various parts of the workpiece. At the same time, through repeated tests on the heating and heating process parameters, quenching medium and parameters, the optimal process parameters were optimized.
After the inspection personnel test the test pieces, all the performance indicators meet the requirements of the process and drawings, which marks the success of the vacuum quenching process.
The success of this process can not only improve the quality of heat treatment products, but also double the production efficiency, which guarantees the high-strength steel products into mass production.
Pigment Dispersant,Dispersing Auxiliary,Paper Making Pigment Dispersant
Reactive Dye Printing Thickener Co., Ltd. , http://www.nsdispersant.com