CN103320581A - High-hardenability quenched and tempered steel heat treatment method - Google Patents
High-hardenability quenched and tempered steel heat treatment method Download PDFInfo
- Publication number
- CN103320581A CN103320581A CN2013102207100A CN201310220710A CN103320581A CN 103320581 A CN103320581 A CN 103320581A CN 2013102207100 A CN2013102207100 A CN 2013102207100A CN 201310220710 A CN201310220710 A CN 201310220710A CN 103320581 A CN103320581 A CN 103320581A
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- Prior art keywords
- quenched
- hardenability
- tempered steel
- heat treatment
- treatment method
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Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000010438 heat treatment Methods 0.000 title claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 11
- 239000010959 steel Substances 0.000 title claims abstract description 11
- 238000005520 cutting process Methods 0.000 claims abstract description 7
- 238000005242 forging Methods 0.000 claims abstract description 4
- 238000005496 tempering Methods 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 238000010791 quenching Methods 0.000 abstract description 6
- 230000000171 quenching effect Effects 0.000 abstract description 6
- 238000005336 cracking Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical group OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 abstract description 3
- 238000003754 machining Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000007493 shaping process Methods 0.000 abstract 1
- 238000009966 trimming Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000954 Medium-carbon steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- IXSZQYVWNJNRAL-UHFFFAOYSA-N etoxazole Chemical compound CCOC1=CC(C(C)(C)C)=CC=C1C1N=C(C=2C(=CC=CC=2F)F)OC1 IXSZQYVWNJNRAL-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
Landscapes
- Heat Treatment Of Articles (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The invention relates to a heat treatment method of machining, and especially relates to a heat treatment method of high-hardenability quenched and tempered steel. The invention aims at solving a technical problem of providing a heat treatment method for avoiding high-hardenability quenched and tempered steel part deformation and cracking. The method comprises the process flow comprising the steps that: rod materials are subjected to intermediate frequency furnace heating, performing, forging and shaping, trimming, and edge cutting; the cut product are stacked in a scattered manner; when the temperature of the products is lower than 20 DEG C, high-temperature tempering is carried out, wherein a heating temperature is controlled at 730-750 DEG C; a temperature maintaining time is controlled at 2h; and the rods are fetched and air-cooled. With the technical scheme, the products can be provided with substantially 100% uniform tiny sorbite structures. Also, quenching processes are reduced, such that phenomena of deformation, cracking, and the like are avoided. Production cost is reduced, product quality is improved, and production efficiency is improved.
Description
Technical field
The present invention relates to a kind of heat treating method of metallic substance, especially a kind of heat treating method of high-hardenability quenched and tempered steel.
Background technology
Quenched and tempered steel generally belongs to medium carbon steel, and the carbon content scope control is in the scope of 0.25-0.5%, and high-hardenability quenched and tempered steel all belongs to the multicomponent alloy structure iron, and the critical through hardening diameter of oil quenching is greater than 60 ~ 100mm.Traditional thermal treatment process all is to adopt quenching+high tempering, just can obtain the tempered sorbite tissue, but in quenching process, be prone to distortion, problems of crack for baroque high-hardenability quenched and tempered steel part, all there are the inhomogeneous phenomenon of hardness in different part products and same product, and oil quenching efficient is low, environment is poor, and cost is high.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of heat treating method that can avoid high-hardenability quenched and tempered steel part deformation, cracking.
In order to solve the problems of the technologies described above, technical process of the present invention comprises carries out intermediate frequency heating, precast billet, forging and molding, finishing, side cut to bar, the stacking of scattering of product after will cutting edge again, after being lower than 200 ℃, product temperature carries out high tempering, heating and temperature control is at 730-750 ℃, soaking time is controlled to be 2h, the rear air cooling of coming out of the stove.
Adopt technique scheme, can make product is 100% even tiny sorbite tissue substantially, simultaneously, because reduced quenching process, has avoided the phenomenons such as distortion, cracking, has reduced production cost, has improved quality product and production efficiency.
Further, with the stacking of scattering of the product after cutting edge, use simultaneously exhaust fan blast-cold product, the speed that can accelerate to cool off like this.
Embodiment
Embodiments of the present invention adopt following technical process:
1, the bar after the blanking adopts the middle frequency furnace heating, and heating and temperature control is measured control by infrared thermometer, then through precast billet, forging, finishing, side cut at 1050 ~ 1150 ℃.The temperature of product is controlled between 850 ℃ ~ 900 ℃ after cutting edge.
2, the stacking of scattering of the product after will cutting edge with exhaust fan blast-cold product, just can focus on charge basket and enter next procedure after product temperature is lower than 200 ℃, Hardness Control is between 36 ~ 42HRC.
3, will put into the chamber type electric resistance furnace heating through the product after air-cooled, heating and temperature control is at 730-750 ℃, and soaking time is controlled to be 2h, the rear air cooling of coming out of the stove.
Claims (2)
1. the heat treating method of a high-hardenability quenched and tempered steel, comprise bar is carried out intermediate frequency heating, precast billet, forging and molding, finishing, side cut, it is characterized in that: the stacking of scattering of the product after will cutting edge, after being lower than 200 ℃, product temperature carries out high tempering, heating and temperature control is at 730-750 ℃, soaking time is controlled to be 2h, the rear air cooling of coming out of the stove.
2. the heat treating method of a kind of high-hardenability quenched and tempered steel according to claim 1 is characterized in that: the stacking of scattering of the product after will cutting edge, use simultaneously exhaust fan blast-cold product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310220710.0A CN103320581B (en) | 2013-06-05 | 2013-06-05 | High-hardenability quenched and tempered steel heat treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310220710.0A CN103320581B (en) | 2013-06-05 | 2013-06-05 | High-hardenability quenched and tempered steel heat treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103320581A true CN103320581A (en) | 2013-09-25 |
| CN103320581B CN103320581B (en) | 2015-04-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310220710.0A Active CN103320581B (en) | 2013-06-05 | 2013-06-05 | High-hardenability quenched and tempered steel heat treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103320581B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105063313A (en) * | 2015-07-23 | 2015-11-18 | 柳州市众力金铭热处理有限公司 | 40Cr steel bar quenched-tempered heat treatment method for quartz sand bar mill |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101524813A (en) * | 2009-04-01 | 2009-09-09 | 重庆歇马机械曲轴有限公司 | Waste heat hardening and tempering process of motorcycle crank forged piece |
| CN102383036A (en) * | 2011-11-17 | 2012-03-21 | 江苏金源锻造股份有限公司 | Medium carbon alloy steel applicable to forging afterheat quenching |
-
2013
- 2013-06-05 CN CN201310220710.0A patent/CN103320581B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101524813A (en) * | 2009-04-01 | 2009-09-09 | 重庆歇马机械曲轴有限公司 | Waste heat hardening and tempering process of motorcycle crank forged piece |
| CN102383036A (en) * | 2011-11-17 | 2012-03-21 | 江苏金源锻造股份有限公司 | Medium carbon alloy steel applicable to forging afterheat quenching |
Non-Patent Citations (2)
| Title |
|---|
| 伍强等主编: "《工程材料》", 30 September 2011, 化学工业出版社 * |
| 潘健生等主编: "《热处理工艺学》", 31 January 2009, 高等教育出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105063313A (en) * | 2015-07-23 | 2015-11-18 | 柳州市众力金铭热处理有限公司 | 40Cr steel bar quenched-tempered heat treatment method for quartz sand bar mill |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103320581B (en) | 2015-04-29 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: High-hardenability quenched and tempered steel heat treatment method Effective date of registration: 20171117 Granted publication date: 20150429 Pledgee: Shanghai Pudong hair bank Limited by Share Ltd. Hengyang branch Pledgor: HENGYANG PENGRUN FORGING Co.,Ltd. Registration number: 2017430000087 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20200608 Granted publication date: 20150429 Pledgee: Shanghai Pudong hair bank Limited by Share Ltd. Hengyang branch Pledgor: HENGYANG PENGRUN FORGING Co.,Ltd. Registration number: 2017430000087 |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200724 Address after: 421311 Huangjin Road, new county seat, Hengnan County, Hengyang City, Hunan Province Patentee after: HUNAN GOZ PRECISION MACHINERY Co.,Ltd. Address before: 421001 Hunan Province, Hengyang Zhengxiang District No. 79 South River Line Patentee before: HENGYANG PENGRUN FORGING Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A Heat Treatment Method for High Hardenability Quenched and Tempered Steel Effective date of registration: 20231027 Granted publication date: 20150429 Pledgee: China Construction Bank Co.,Ltd. Hengyang Branch Pledgor: HUNAN GOZ PRECISION MACHINERY CO.,LTD. Registration number: Y2023980063231 |