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Small-module gear single-tooth induction quenching process

A small modulus gear, induction hardening technology, applied in the field of heat treatment, can solve the problems of inability to quench the tooth root, tooth distortion, etc., and achieve the effect of strengthening the overall structural strength

Inactive Publication Date: 2019-04-09
重庆市傲运热处理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although in this case only the teeth are heated and the heating time is very short, there is also the influence of tissue stress and thermal stress after hardening. Not only the teeth will be deformed, but the inner hole will also be affected. However, the above method cannot Hardening of tooth root

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  • Small-module gear single-tooth induction quenching process
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  • Small-module gear single-tooth induction quenching process

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Embodiment Construction

[0024] In order to enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] A single-tooth induction hardening process for small modulus gears includes the following steps:

[0026] Step 1: Fix the sensor, adjust the parallelism and perpendicularity of the sensor, and clean the liquid flow channels in the sensor;

[0027] Step 2: Connect the cooling liquid inlet and outlet pipes and the quenching liquid supply pipe on the inductor;

[0028] Step 3: After cleaning the surface of the gear workpiece, adjust the tooth position;

[0029] Step 4: Start the quenching program;

[0030] Step 5: Cool down and temper.

[0031] Inductor working current intensity 360A-460A, working voltage intensity 220V-3200V, frequency 5300Hz-5500Hz, heating time 2.5s-4.5s, quenching liquid injection time 1s-5s.

[0032] The residual temperature afte...

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Abstract

The invention discloses a small-module gear single-tooth induction quenching process and belongs to the field of heat treatment processes. The process comprises the following steps: 1, fixing an inductor, adjusting the parallelism and verticality of the inductor, and cleaning liquid flow channels in the inductor; 2, connecting a coolant inlet pipe and a coolant outlet pipe on the inductor and a quenching liquid supply pipe; 3, after the surface of a gear workpiece is cleaned, adjusting a tooth position; 4, starting the quenching process; and 5, carrying out cooling and tempering. According tothe technical solution, the inductor stretches to the space between adjacent teeth for successive intertooth quenching, and can effectively quench roots of teeth, so that overall structural strength of the gear surface is effectively strengthened.

Description

Technical field [0001] The invention belongs to the technical field of heat treatment, and specifically, is a small-module gear single-tooth induction hardening process. Background technique [0002] During high-frequency induction hardening of gears, due to the fast heating speed and short time, only the structure transformation occurs on the surface, so the amount of distortion is generally small, the length of the common normal line does not change much, showing a shrinking trend, and the size of the inner hole generally shrinks. The high-frequency heating speed is fast, and the expansion of the heated part is always affected by compression stress, and compression distortion will occur when heated to a certain plastic state. In the subsequent cooling process, the length of the common normal line shrinks and compresses the unheated inner hole, thereby shrinking the inner hole and outer diameter. The amount of shrinkage is related to the wall thickness. Generally, the amount of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/18C21D1/42C21D9/32
CPCC21D1/18C21D1/42C21D9/32Y02P10/25
Inventor 曹秀峰
Owner 重庆市傲运热处理有限公司