CN103834952A - Heat treatment process for gear steel - Google Patents
Heat treatment process for gear steel Download PDFInfo
- Publication number
- CN103834952A CN103834952A CN201210491990.4A CN201210491990A CN103834952A CN 103834952 A CN103834952 A CN 103834952A CN 201210491990 A CN201210491990 A CN 201210491990A CN 103834952 A CN103834952 A CN 103834952A
- Authority
- CN
- China
- Prior art keywords
- treatment process
- heat treatment
- quenching
- thermal treatment
- 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
Links
Abstract
The invention discloses a heat treatment process for gear steel, which comprises the following steps: (A) surface quenching; (B) carburizing and quenching; (C) surface nitriding chemical heat treatment; (D) hardening and tempering; (E) normalizing treatment. By adopting the heat treatment process for gear steel, disclosed by the invention, the structure property of the structure surface can be greatly improved, and the phenomenon of tooth breakage is avoided.
Description
Technical field
The present invention relates to a kind of Pinion Steel thermal treatment process.
Background technology
In prior art, in Pinion Steel heat treatment process, gear can increase the intensity of hardened layer through carbonitriding, but due to misoperation, may cause surface layer excessive concentration, be that the carbide of separating out is separated out with horn shape or netted form, can cause tissue surface structure property seriously to reduce, easily produce tooth and collapse, and easy stress concentration.
Summary of the invention
The object of this invention is to provide a kind of Pinion Steel thermal treatment process.
The technical scheme that the present invention adopted is for achieving the above object: a kind of Pinion Steel thermal treatment process, comprises the following steps:
A, carry out hard surfacing;
B, carburizing and quenching;
C, surface carburization thermo-chemical treatment;
D, carry out modified;
E, normalizing treatment.
In described steps A, after hard surfacing, tooth face hardness is generally 40～55HRC.
In described step B, after carburizing and quenching, tooth face hardness can reach 56～62HRC.
A kind of Pinion Steel thermal treatment process of the present invention, can make tissue surface structure property greatly be improved, and can not produce tooth and collapse phenomenon.
Embodiment
Pinion Steel thermal treatment process, comprises the following steps: A, carry out hard surfacing, after hard surfacing, tooth face hardness is generally 40～55HRC, and feature is that antifatigue spot corrosion, antiscuffing capacity are high, and wear resistance is good; Owing to hardening in tooth heart portion end, gear still has enough toughness, can bear little shock load; B, carburizing and quenching, after carburizing and quenching, tooth face hardness can reach 56～62HRC, and tooth heart portion still keeps higher toughness, the gear teeth hold curved intensity and contact strength of tooth surface high, wear resistance is better, the important geartransmission of the load that is usually used in being hit, and gear is after carburizing and quenching, gear tooth deformation is larger, should carry out roll flute; C, surface carburization thermo-chemical treatment, after nitriding, do not need to carry out other thermal treatments, tooth face hardness can reach 700～900HV, because nitriding gear hardness after treatment is high, technological temperature is low, be out of shape little, therefore be applicable to internal wheel and the gear that is difficult to grinding, be usually used in the nitriding steel containing alloying elements such as chromium, copper, lead, as 38CrMoAlA; D, carry out modifiedly, after modifier treatment, tooth face hardness is generally 220～280HBS, and because hardness is not high, gear teeth precision work can be carried out after thermal treatment; E, normalizing treatment, normalizing can be eliminated internal stress, and crystal grain thinning improves mechanical property and cutting ability.Pinion Steel thermal treatment process of the present invention, can make tissue surface structure property greatly be improved, and can not produce tooth and collapse phenomenon.
Claims (3)
1. a Pinion Steel thermal treatment process, is characterized in that: comprise the following steps:
A, carry out hard surfacing;
B, carburizing and quenching;
C, surface carburization thermo-chemical treatment;
D, carry out modified;
E, normalizing treatment.
2. a kind of Pinion Steel thermal treatment process according to claim 1, is characterized in that: in described steps A, after hard surfacing, tooth face hardness is generally 40～55HRC.
3. a kind of Pinion Steel thermal treatment process according to claim 1, is characterized in that: in described step B, after carburizing and quenching, tooth face hardness can reach 56～62HRC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210491990.4A CN103834952A (en) | 2012-11-28 | 2012-11-28 | Heat treatment process for gear steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210491990.4A CN103834952A (en) | 2012-11-28 | 2012-11-28 | Heat treatment process for gear steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103834952A true CN103834952A (en) | 2014-06-04 |
Family
ID=50798834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210491990.4A Pending CN103834952A (en) | 2012-11-28 | 2012-11-28 | Heat treatment process for gear steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103834952A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104152918A (en) * | 2014-07-22 | 2014-11-19 | 广州市机电工业研究所 | Common steel boriding and quenching combined treatment process |
| CN105018700A (en) * | 2015-08-06 | 2015-11-04 | 无锡阳工机械制造有限公司 | High-speed steel heat treatment process |
| CN105177597A (en) * | 2015-08-06 | 2015-12-23 | 无锡阳工机械制造有限公司 | Bearing steel thermal treatment process |
-
2012
- 2012-11-28 CN CN201210491990.4A patent/CN103834952A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104152918A (en) * | 2014-07-22 | 2014-11-19 | 广州市机电工业研究所 | Common steel boriding and quenching combined treatment process |
| CN105018700A (en) * | 2015-08-06 | 2015-11-04 | 无锡阳工机械制造有限公司 | High-speed steel heat treatment process |
| CN105177597A (en) * | 2015-08-06 | 2015-12-23 | 无锡阳工机械制造有限公司 | Bearing steel thermal treatment process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101285158B (en) | Carburized and high-frequency hardened part having high strength | |
| CN104981556B (en) | Tufftride high-frequency quenching steel part | |
| JP5635316B2 (en) | Gear having excellent fatigue strength and method for manufacturing the same | |
| KR101294900B1 (en) | Steel for nitrocarburization, nitrocarburized components, and production method for same | |
| CN102859023B (en) | Steel for high frequency hardening, roughly molded material for high frequency hardening and process for production thereof, and high-frequency-hardened steel member | |
| CN102618817A (en) | Process for machining parts of automobile gear box by using 20CrMnTi steel | |
| CN105002507A (en) | 17CrNiMo6 material gear machining process | |
| CN103834952A (en) | Heat treatment process for gear steel | |
| CN103590050B (en) | Worm part carburization quenching method | |
| CN104451705A (en) | Gear manufacturing process | |
| CN102796852B (en) | Carburizing reinforced isothermal quenching workpiece and processing method thereof | |
| JP2007246941A (en) | Component for high facial pressure and its production method | |
| CN105755476A (en) | Heat treatment process for gear steel | |
| CN106756750B (en) | A kind of heat treatment method of 2Cr3WMoV material gear forgings | |
| CN104562050B (en) | A kind of preparation method of heavy-duty gear | |
| CN106757060A (en) | Gear steel heat treatment process | |
| CN105714310A (en) | Thermal treatment process for gear steel | |
| CN105238913A (en) | Pin shaft of engine timing chain and tufftriding process | |
| CN101994121A (en) | Composite heat treatment method | |
| CN107937862A (en) | A kind of carburization process for chain production | |
| CN108148949A (en) | Gear steel heat treatment process | |
| JP5734050B2 (en) | Medium carbon steel with excellent rolling fatigue properties and induction hardenability | |
| JP2005330587A (en) | Method for producing gear having excellent tooth surface strength and gear having excellent tooth surface strength | |
| JP5077814B2 (en) | Shaft and manufacturing method thereof | |
| CN103834789A (en) | Heat treatment process for gear |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140604 |