Gears are widely used in cutting machine tools, automobiles, tractors and many other industrial fields. It is a mechanical transmission part widely used in various types of machinery and instruments in modern industry, agriculture, national defense and transportation equipment. It is an important part for transmitting power and motion in machines. During the working process, the gear needs to withstand huge friction. Therefore, production usually requires it to have high hardness, high wear resistance and long service life. In order to meet these performance requirements of gears, we usually use medium frequency induction heating equipment to perform quenching and tempering heat treatment on gears.
It can be seen from the above description that the quality of gear quenching and tempering is directly related to whether the gear can operate normally. Therefore, it is very necessary to inspect the quenched and tempered gears. Today, the editor will tell you about the specific inspection contents. See the table below for details.
|
Test items |
Inspection content and methods |
|
Steel quality |
Use samples to test: chemical composition, low-magnification structure, and grain size |
|
Mechanical properties |
Test with a test rod: generally test the hardness of the tooth surface after processing |
|
flaw detection |
Gear inspection: Gears with higher requirements should be inspected for tooth cracks, pores, shrinkage holes, white spots, etc. after machining. |
|
Microstructure |
Test with a sample: the tooth should basically be tempered troostite |
|
decarburization layer |
Test with a sample: the decarburization layer generally does not exceed 1/3 of the processing allowance. |
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GS-ZP-1200
