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Shaft part induction quenching and synchronous induction tempering method and heating inductor

A technology for heating inductors and shaft parts, which is applied in the direction of quenching devices, furnace types, heat treatment furnaces, etc., can solve the problems of long product circulation period and bump damage on the surface of parts, so as to improve the utilization rate of electric energy, prevent bump damage, improve quality effect

Active Publication Date: 2013-05-15
WANXIANG QIANCHAO TRANSMISSION SHAFT +1
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the traditional induction hardening process of shaft parts, after induction hardening, equipment such as mesh belt furnace is used to reheat the whole part for low-temperature tempering. There is a long product circulation cycle, and repeated product handling may easily cause bumps on the surface of the parts.

Method used

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  • Shaft part induction quenching and synchronous induction tempering method and heating inductor
  • Shaft part induction quenching and synchronous induction tempering method and heating inductor

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Embodiment

[0017] Embodiment: The workpiece used in this embodiment: the outer diameter of the spline of the workpiece is 35mm, the diameter of the neutral part is φ30mm, the material is SAE1045, and the hardness of the quenched and tempered matrix of the forging is HB217~245.

[0018] An induction hardening process, especially a process of induction tempering immediately after quenching, in which the shaft part 4 is placed on the equipment supported by double tops, the inductor is adjusted to be concentric with the center of the workpiece, and the inductor is moved to the shaft part 4 The initial processing part at the lower end, the rotation speed of the shaft part 4 is 90~150rpm, the uniform heating frequency is 9000~10500HZ during induction hardening, stay for a period of time to heat the surface of the part to 890℃~910℃, and move the induction hardening upward Spray JX aqueous solution at 23~40°C with a flow rate of 30-80L / Min for cooling and quenching, scanning heating to the end of...

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Abstract

The invention relates to a shaft part induction quenching and synchronous induction tempering method and a heating inductor. The heating inductor comprises an inductor main body, wherein the inductor main body comprises a quenching coil and a tempering coil; the quenching coil and the tempering coil are connected to form a 8-shaped structure; and an insulating plate is arranged at the tail end of the inductor main body. The quenching and tempering method comprises the following steps of: performing induction quenching on the shaft part by using the quenching coil according to the conventional induction quenching process, and moving the inductor main body after spraying cooling, so that the center of the tempering coil of the inductor main body is coincided with the rotary center of the shaft part, performing induction tempering, and cooling the tempered shaft parts, so that the induction quenching and tempering process is finished. The method has the beneficial effects that quenching and tempering are finished through one-step clamping, the part clamping frequency is reduced, the part collision and damage in the mesh belt furnace tempering detachment process is prevented, the production efficiency of induction tempering is improved, and the part turnover speed is accelerated.

Description

technical field [0001] The invention relates to the field of heating inductors and induction hardening technology, and mainly relates to a method for induction quenching and synchronous induction tempering of shaft parts and a heating inductor. Background technique [0002] In the traditional induction hardening process of shaft parts, after induction hardening, equipment such as mesh belt furnace is used to reheat the whole part for low-temperature tempering. There is a long product circulation cycle, and the product is easily bumped on the surface of the part due to repeated handling. Therefore, it is necessary to newly develop a heat treatment process in which induction tempering is performed immediately after induction hardening. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcomings of the prior art, and provide a method for induction hardening and synchronous induction tempering of shaft parts and a heating inductor. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/00C21D1/42C21D1/18C21D1/667
CPCY02P10/25
Inventor 李宏叶勇
Owner WANXIANG QIANCHAO TRANSMISSION SHAFT
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