CN105986275A - Method for producing wheel gear by 20CrMnTi carburizing steel - Google Patents

Method for producing wheel gear by 20CrMnTi carburizing steel Download PDF

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Publication number
CN105986275A
CN105986275A CN201510048518.7A CN201510048518A CN105986275A CN 105986275 A CN105986275 A CN 105986275A CN 201510048518 A CN201510048518 A CN 201510048518A CN 105986275 A CN105986275 A CN 105986275A
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CN
China
Prior art keywords
quenching
carburizing steel
20crmnti
minutes
carburizing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510048518.7A
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Chinese (zh)
Inventor
罗灿
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Asia Mold Manufacturing Co Ltd
Original Assignee
Chongqing Asia Mold Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chongqing Asia Mold Manufacturing Co Ltd filed Critical Chongqing Asia Mold Manufacturing Co Ltd
Priority to CN201510048518.7A priority Critical patent/CN105986275A/en
Publication of CN105986275A publication Critical patent/CN105986275A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a method for producing a wheel gear by 20CrMnTi carburizing steel. The method comprises the following steps: billet forging, quenching, high-temperature tempering, machining, performing shot blasting, machining, carburizing and quenching, tempering, and performing shot blasting. The method is characterized in that 1) quenching is characterized in that the workpieces are heated to 1005+/-5 DEG C, then are insulated to 90 minutes and subjected to air cooling for 20 minutes, the workpieces are put into quenching oil for being quenched; and 2) high-temperature tempering is characterized in that the workpieces after quenching are heated to 700+/-10 DEG C, then are insulated to 150 minutes and subjected to water cooling. The method can improve the machining performance of the 20CrMnTi carburizing steel.

Description

20CrMnTi carburizing steel makes the method for gear
Technical field
The invention belongs to field of gears, particularly relate to a kind of method that 20CrMnTi carburizing steel makes gear.
Background technology
Motorcycle-gear uses 20CrMnTi carburizing steel to manufacture, and the operation of existing processing motorcycle-gear is : forging stock → machine adds → and normalizing → ball blast → machine adds → carburizing and quenching → tempering → ball blast, in this operation, 20CrMnTi carburizing steel is carried out normalizing, its objective is to adjust microscopic structure and the hardness of carburizing steel, to improve machinability, and prepare for follow-up carburizing and quenching.
20CrMnTi carburizing steel is used normalizing, net carbide, crystal grain thinning can be eliminated, improve the machinability of material, reduce the deformation of follow-up carburizing and quenching.
In consideration of it, the present invention is in order to better control over the workpiece deformation at carburizing and quenching, it is proposed that a kind of method using 20CrMnTi carburizing steel to make motorcycle-gear, this motorcycle-gear manufacture method also has improvement The advantage of 20CrMnTi carburizing steel machinability, it is possible to meet and produce needs.
Summary of the invention
Because the drawbacks described above of prior art, the technical problem to be solved is a kind of method using 20CrMnTi carburizing steel to make gear, uses the method can improve the machinability of 20CrMnTi carburizing steel.
For achieving the above object, the invention provides a kind of employing 20CrMnTi carburizing steel makes the method for gear, it is characterised in that: include following operation: forging stock → quenching → high tempering → machining → shot-peening → machining → carburizing and quenching → tempering → Shot Blasting;
Further, 1) quenching is first by workpiece heat to 1005 ± 5 DEG C, and air cooling 20 minutes after being incubated 90 minutes, first puts into quenching-in water 30s, is finally putting in quenching oil and quenches;2) high tempering is to 700 ± 10 DEG C by the workpiece heat after quenching, and after being incubated 150 minutes, water-cooled.
The invention has the beneficial effects as follows: the present invention uses The method of 20CrMnTi carburizing steel making motorcycle-gear not only improves the machinability of 20CrMnTi carburizing steel, and there is preferably mechanical performance, the deformation of workpiece can be better controled in follow-up carburizing and quenching operation, the carburizing and quenching making workpiece deforms more regular property, make workpiece can guarantee that machining accuracy during cold working, improve product quality.
Detailed description of the invention
A kind of method using 20CrMnTi carburizing steel to make gear, it is characterised in that : include following operation: forging stock → quenching → high tempering → machining → shot-peening → machining → carburizing and quenching → tempering → Shot Blasting;
Further, 1) quenching is first by workpiece heat to 1010 DEG C, and air cooling 20 minutes after being incubated 90 minutes, first puts into quenching-in water 30s, is finally putting in quenching oil and quenches;2) high tempering is to 710 DEG C by the workpiece heat after quenching, and after being incubated 150 minutes, water-cooled.Double hardening media quenching method is used the most not only to ensure that the higher rigidity layer of acquisition and depth of hardening zone but also internal stress can be reduced and prevent hardening break.
The method that the present invention uses 20CrMnTi carburizing steel to make motorcycle-gear not only improves the machinability of 20CrMnTi carburizing steel, and there is preferably mechanical performance, the deformation of workpiece can be better controled in follow-up carburizing and quenching operation, the carburizing and quenching making workpiece deforms more regular property, make workpiece can guarantee that machining accuracy during cold working, improve product quality.

Claims (2)

1. one kind uses the method that 20CrMnTi carburizing steel makes gear, it is characterised in that: include following operation: forging stock → quenching → high tempering → machining → shot-peening → machining → carburizing and quenching → tempering → Shot Blasting;
Employing 20CrMnTi carburizing steel the most according to claim 1 makes the method for gear, it is characterized in that: 1) quenching be first by workpiece heat to 1005 ± 5 DEG C, and air cooling 20 minutes after being incubated 90 minutes, first put into quenching-in water 30s, be finally putting in quenching oil and quench;2) high tempering is to 700 ± 10 DEG C by the workpiece heat after quenching, and after being incubated 150 minutes, water-cooled.
CN201510048518.7A 2015-01-30 2015-01-30 Method for producing wheel gear by 20CrMnTi carburizing steel Pending CN105986275A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510048518.7A CN105986275A (en) 2015-01-30 2015-01-30 Method for producing wheel gear by 20CrMnTi carburizing steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510048518.7A CN105986275A (en) 2015-01-30 2015-01-30 Method for producing wheel gear by 20CrMnTi carburizing steel

Publications (1)

Publication Number Publication Date
CN105986275A true CN105986275A (en) 2016-10-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510048518.7A Pending CN105986275A (en) 2015-01-30 2015-01-30 Method for producing wheel gear by 20CrMnTi carburizing steel

Country Status (1)

Country Link
CN (1) CN105986275A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107385187A (en) * 2017-06-21 2017-11-24 安徽金越轴承有限公司 A kind of Tempering and Quenching method of bearing holder (housing, cover) processing
CN113337691A (en) * 2020-03-02 2021-09-03 中车戚墅堰机车车辆工艺研究所有限公司 Method for reducing heat treatment deformation of carburized and quenched part

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107385187A (en) * 2017-06-21 2017-11-24 安徽金越轴承有限公司 A kind of Tempering and Quenching method of bearing holder (housing, cover) processing
CN113337691A (en) * 2020-03-02 2021-09-03 中车戚墅堰机车车辆工艺研究所有限公司 Method for reducing heat treatment deformation of carburized and quenched part

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Application publication date: 20161005