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A kind of transmission output shaft heat treatment strengthening process and transmission output shaft

A transmission and output shaft technology, which is applied in the transmission output shaft heat treatment strengthening process and the transmission output shaft field, can solve the problems of shallow effective hardened layer depth, insufficient output torsional strength, and large hardness drop gradient, so as to improve the subsurface strength and avoid Effect of early fracture and reduction of hardness drop gradient

Active Publication Date: 2022-08-09
FAW JIEFANG AUTOMOTIVE CO
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Problems solved by technology

[0004] The purpose of the present invention is to provide a transmission output shaft heat treatment strengthening process to solve the problems in the prior art that the effective hardened layer depth of the output shaft using the traditional output shaft strengthening process is shallow, the hardness decline gradient is large, and the output torsional strength is insufficient , prone to early fracture problems

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  • A kind of transmission output shaft heat treatment strengthening process and transmission output shaft
  • A kind of transmission output shaft heat treatment strengthening process and transmission output shaft
  • A kind of transmission output shaft heat treatment strengthening process and transmission output shaft

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Embodiment Construction

[0036] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clearly, the technical solutions of the present invention are further described below with reference to the accompanying drawings and through specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, the accompanying drawings only show some but not all of the parts related to the present invention.

[0037] In the description of the present invention, unless otherwise expressly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it...

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Abstract

The invention discloses a heat treatment strengthening process for a transmission output shaft and a transmission output shaft, which belong to the technical field of transmission processing. The material of the transmission output shaft is low-carbon alloy steel, and the heat treatment strengthening process for the transmission output shaft includes: S1. Carbon quenching and low temperature tempering treatment, S2, induction heating secondary quenching treatment for the spline section. Using the characteristics of high induction heating speed and strong spray cooling ability, the surface hardness of the spline segment can reach 58HRC‑64HRC, and the effective hardened layer depth can reach DS450HV54.5‑6.5. Compared with the existing technology, it can improve the transmission output shaft. The strength of the subsurface layer reduces the gradient of hardness drop and improves the torsional strength of the transmission output shaft.

Description

technical field [0001] The invention relates to the technical field of transmission processing, in particular to a heat treatment strengthening process of a transmission output shaft and a transmission output shaft. Background technique [0002] With the development of vehicle technology, the requirements for the transmission output shaft are getting higher and higher, and some commercial vehicle transmissions need to increase the output torque by 10% on the premise of the same main structure size. During the driving of the car, the transmission transmits the power through the output shaft to the transmission shaft at the corresponding speed ratio under different gear working conditions. In the first gear, the output bearing receives the maximum torque. [0003] The traditional output shaft strengthening process is to use low-carbon and low-alloy steel after carburizing treatment for quenching and tempering, so that the surface layer of the output shaft forms high-carbon mar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D9/28C23C8/22C21D1/18C21D1/10C23F17/00F16C3/02
CPCC21D9/28C23C8/22C21D1/18C21D1/10C23F17/00F16C3/02Y02P10/25
Inventor 王学双吴宁乔小兵齐飞李骏邹德志徐成林谷鸣宇姜波李伟何铭雪李航宇王保男王云松韩长亮
Owner FAW JIEFANG AUTOMOTIVE CO
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