Carburizing steel expanding process and carburizing steel gear

A carburizing steel and expansion technology, which is applied in the direction of metal material coating process, coating, solid diffusion coating, etc., can solve the problems of lower production efficiency, small tooth tip circle size of gear blank, and inability to process gears, etc.

Inactive Publication Date: 2021-08-20
CHONGQING GEARBOX
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the process of gear machining, the common normal line and addendum circle size of the gear blank may be too small after rough turning or gear hobbing
If the common normal line and addendum circle of the gear blank are too small, then the gear that meets the r...

Method used

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  • Carburizing steel expanding process and carburizing steel gear
  • Carburizing steel expanding process and carburizing steel gear

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Embodiment Construction

[0023] The invention discloses a carburizing steel expansion process, which can increase the size of a steel billet so that the steel billet meets the size requirements of later machining. The invention also discloses a carburized steel gear.

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0025] The processing technology of carburized steel gears includes: blank forging, rough turning, gear hobbing, carburizing, quenching and machining. After rough turning or gear hobbing, when faced wit...

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Abstract

The invention discloses a carburizing steel expanding process. After rough turning or gear hobbing, the applicant creatively expands a gear blank in a quenching and high-temperature tempering manner when the problem that the size of the gear blank (steel blank) is small is solved. The method is convenient to implement, and the applicant finds that the gear blank subjected to expanding treatment can completely meet the machining size requirement of the gear. And on the contrary to a carburized steel blank, the un-carburized steel blank is not affected by a surface layer high-carbon area in the quenching process, so that the expansion amount is larger, and the size requirement is easily met. Therefore, the gear blank is subjected to expanding treatment before carburizing by the applicant. The steel blank is subjected to expanding treatment before carburizing, so that the steel blank can meet the later machining size requirement, and the steel blank subjected to the expanding treatment is more beneficial to later carburizing and quenching. The invention further discloses a carburizing steel gear.

Description

technical field [0001] The invention relates to the field of carburizing steel, more specifically, to a carburizing steel expansion process and a carburizing steel gear. Background technique [0002] In the prior art, carburized steel is usually used to manufacture gears. The processing steps of the gear mainly include: blank forging - rough turning - hobbing - carburizing + quenching - machining. Among them, rough forging, rough turning and gear hobbing are all cold working. [0003] However, in the process of gear machining, the common normal line and addendum circle size of the gear blank may be too small after rough turning or gear hobbing. If the common normal line and addendum circle of the gear blank are too small, then the gear that meets the requirements cannot be processed in the subsequent machining. Therefore, if the common normal line and addendum circle of the gear blank are too small after rough turning and hobbing, the gear blank can only be scrapped, resu...

Claims

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Application Information

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IPC IPC(8): C21D1/18C21D6/00C23C8/02
CPCC21D1/18C21D6/00C23C8/02
Inventor 党军玲马宏利贺志付黄文鹏仲博颖胡云权
Owner CHONGQING GEARBOX
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