How to reduce the deformation problem of alloy aluminum sheet during processing
Jul 27, 2021
Aluminum is the most widely used non-ferrous metal and metal material, and its application range is constantly expanding. There are many types of aluminum products produced by aluminum, from the construction and decoration industries to the transportation and aerospace industries have different needs. The deformation of the alloy aluminum plate during the production process will affect the production efficiency. What measures should be taken to prevent deformation of the alloy aluminum plate during processing? Today, Changzhou Wardman Aluminum Technicians proposed processing measures to reduce the deformation of alloy aluminum plates.
Technical measures to reduce deformation of aluminum processing:
1. Reduce the internal stress of the wool
Natural or artificial aging and vibration treatment can partially eliminate the internal stress of the blank. Pretreatment is also an effective process. A blank with a big head and big ears will be deformed greatly after processing due to the large margin. If the blank and redundant parts are processed in advance, the profit of each part is reduced, which can not only reduce the subsequent processing deformation process, but also can be processed in advance after the internal stress is released.
2. Reasonable arrangement of work procedures:
In high-speed cutting, due to the large machining allowance and discontinuous cutting, vibration often occurs during the milling process, which affects the machining accuracy and surface roughness. Therefore, the CNC high-speed machining process can generally be divided into: rough machining-semi-finishing-corner machining-finishing and other processes. For parts with high precision requirements, sometimes it is necessary to perform semi-finishing twice first, and then finishing. The parts after rough machining can be cooled naturally to eliminate internal stress caused by rough machining and reduce deformation. The margin left after rough machining should be greater than the amount of deformation, generally 1~2mm. During finishing, the finishing surface of the part should maintain a uniform machining allowance, generally 0.2~0.5mm is appropriate, so that the tool is in a stable state during the machining process, which can greatly reduce cutting deformation, obtain good surface machining quality, and ensure product quality. Accuracy.
Third, improve the cutting ability of the tool:
Tool material and geometric parameters have an important influence on cutting force and cutting heat. The correct selection of tools is essential to reduce part deformation.
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