Carburizing and quenching large inner gear ring machining method
A technology of carburizing and quenching and processing methods, which is applied in the field of gear processing, can solve problems such as failure to achieve design accuracy and life, and achieve good comprehensive mechanical properties, low energy consumption, and avoid process waste.
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[0028] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the described embodiments.
[0029] A method for processing a carburized and quenched large internal gear ring, comprising the following steps:
[0030] The first step, forging: including controlling the forging ratio as required, and testing the bulk grain size, mechanical properties and forging defects with samples;
[0031] The second step, normalizing: to refine the grain and eliminate the forging stress;
[0032] The third step is to remove the black skin rough turning: according to the principle of roughness of Ra3.2 and retaining the maximum physical size, the black skin is removed by turning;
[0033] The fourth step, flaw detection: use an ultrasonic flaw detector to conduct ultrasonic flaw detection to detect internal defects of the gear blank, so as to eliminate gear blanks with internal defects that ar...
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