The difference in material and structure of the parts has a great influence on the deformation after heat treatment , and defects such as cracks may occur in severe cases. Now, a heat treatment accident is analyzed. Under the condition of satisfying the performance, from the viewpoint of the heat treatment process, after quenching and tempering the large casting gear, severe quenching cracks appear. The analysis of the causes of cracking shows that the cooling rate of PAG quenching cooling medium has a great influence. By adjusting the process parameters and synthesizing various production links, the quality of large castings is improved and improved, which provides a reference for the subsequent heat treatment of large castings and forgings.
The gear processing process is: external blank (normalized state) → non-destructive testing → roughing → testing → heat treatment → non-destructive testing → fine car → hobbing → key slot → assembly.
For more information, please see "Metal Processing (Hot Processing)", please see the attached content:
Step Drills,Hss Step Drill Bit,High Speed Step Drill Bit,Metric Carbide Step Drills
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