What is the anti-oxidation technology analysis of precision parts processing?

What kind of follow-up treatment deformation heat treatment process control is used for precision parts processing, and how to solve this problem in the manufacturing process of other protective antioxidants? Magnesium alloys can be divided into cast magnesium alloys, magnesium alloy processing and heat treatment deformed magnesium alloy processing facing a big problem There are many deformations, including aluminum alloy. In order to eliminate the deformation, I have several methods. Aging treatment means that after the stress is deformed to the school, the form of the school uses heat on the way to the school. When the other method is to form the surface school form, I suggest that you can try shot peening methods, including shot peening of the shape of airplane wings. form.

The machining of precision parts is first strengthened. The purpose is to increase the strength of the organization and improve the cutting performance of the material. The temperature is about 140℃, and the temperature control of magnesium-aluminum-titanium light alloy is the key. It is the second aging treatment, the purpose is to eliminate the rough machining of the pressure, in order to lay the foundation for good process feasibility, the temperature is about 120 ℃. The third is low-temperature heat treatment, thin-walled and precision machined parts, which must have a stable size. Military products are subjected to high and low temperature tests, vibration tests, and sinusoidal frequency tests. These tests must pass environmental temperature changes, so they must be processed stably, that is Positive and negative cycle heat treatment temperature, the temperature is -50~90℃, the difference between plus and minus is 10℃.

The part that does not eliminate the heat treatment deformation can only be reduced, but cannot be eliminated, because there are many factors that can cause deformation. It must be correctly analyzed. In addition to heat treatment, the processing process can ensure the size requirements of the magnesium alloy thin-walled parts in the design of the production tooling and fixture through reasonable arrangement technology. Such as reducing the deformation to meet the accuracy requirements.

Professionals in precision parts processing analyze that do not try to solve the problem of deformation in the final stage of heat treatment. In fact, the deformation accumulates to the end during the processing process. Each step of the process can generate pressure, and the deformation stress will be released in the last part. One step is needed to relieve the least stressed countries, including control of processed feed, caused by the stress state and deformation of the large surface of the feed. I don’t have much contact with magnesium alloys, but the internal pressure of many deformed steels is the result of phase transformation. The adjustment depends on the adjusted heat treatment, carburizing high temperature deformation. If it is not adjusted in the early stage, deformation will occur. Aviation industry standards, preparation of carburizing heat treatment annealing Or normalizing and tempering heat treatment requirements are not only high temperature normalizing + tempering, quenching and high temperature tempering.

As well as fixtures, quenching temperature, heating temperature and quenching cooling medium itself, the aviation industry puts forward high requirements for quenching temperature, such as water, warm water quenching, quenching hot water and salt water quenching. Therefore, the elimination of deformation requires overall consideration.


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