CN103725831A - Hardening and tempering process of alloy-steel pipe - Google Patents
Hardening and tempering process of alloy-steel pipe Download PDFInfo
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Abstract
The invention discloses a hardening and tempering process of an alloy-steel pipe. The process comprises the following steps: 1) conducting annealing treatment: heating to the temperature up to 700-720 DEG C at the speed of 50-55 DEG C/min, and conducting heat preservation for 1.5-2.5 hours, cooling the temperature down to 570 DEG C at the speed of 30 DEG C/min, and cooling the temperature down to the room temperature at the speed of 5 DEG C/min; 2) conducting quenching treatment: heating to the temperature up to 800-810 DEG C at the speed of 20-25 DEG C/min, conducting heat preservation for 2.5-3.5 hours, spraying by brine with the concentration of 30-35% to rapidly cool the temperature down to 250-260 DEG C at the speed of 250-255 DEG C/s, and cooling the temperature down to 70-80 DEG C at the speed of 15 DEG C/min; 3) conducting tempering treatment: heating to the temperature up to 700-710 DEG C at the speed of 30-35 DEG C/min, conducting heat preservation for 7-8 hours, and cooling the temperature down to the room temperature at the speed of 10 DEG C/min. Through the adoption of the hardening and tempering process of the alloy-steel pipe, the alloy-steel pipe being subjected to hardening and tempering is high in plasticity, strength, pressure resistance, and hardness, low in deformation, and good in abrasive resistance.
Description
Technical field
The present invention relates to the hardening and tempering process of alloy steel pipe.
Background technology
At present the plasticity of general alloy steel pipe is weak, intensity is low, bear pressure effect, distortion is large, hardness is low, wear no resistance, and needs a kind of alloy steel pipe plasticity grow, intensity of making to uprise, bear the hardening and tempering process that pressure becomes large, diminishes, hardness uprises, wear resistance improves.
Summary of the invention
The object of the present invention is to provide a kind of hardening and tempering process of alloy steel pipe, it makes, and alloy steel pipe plasticity after modified is strong, intensity is high, bear pressure large, be out of shape little, hardness is high, wear resistance good.
For achieving the above object, technical scheme of the present invention is the hardening and tempering process of a kind of alloy steel pipe of design, comprises the steps:
1) anneal: the speed with 50-55 ℃/min is warming up to 700-720 ℃, insulation 1.5-2.5 hour, then be cooled to 570 ℃ with the speed of 30 ℃/min, then be cooled to room temperature with the speed of 5 ℃/min;
2) quench treatment: the speed with 20-25 ℃/min is warming up to 800-810 ℃, insulation 2.5-3.5 hour, adopting concentration is that the brine sparge of 30-35% is cooled to 250-260 ℃ rapidly with the speed of 250-255 ℃/s again, then is cooled to 70-80 ℃ with the speed of 15 ℃/min;
3) temper: the speed with 30-35 ℃/min is warming up to 700-710 ℃, insulation 7-8 hour, then be cooled to room temperature with the speed of 10 ℃/min.
Advantage of the present invention and beneficial effect are: a kind of hardening and tempering process of alloy steel pipe is provided, it makes, and alloy steel pipe plasticity after modified is strong, intensity is high, bear pressure large, be out of shape little, hardness is high, wear resistance good.
Embodiment
Below in conjunction with embodiment, the specific embodiment of the present invention is further described.Following examples are only for technical scheme of the present invention is more clearly described, and can not limit the scope of the invention with this.
The concrete technical scheme of implementing of the present invention is:
Embodiment 1
A hardening and tempering process for alloy steel pipe, comprises the steps:
1) anneal: the speed with 55 ℃/min is warming up to 720 ℃, is incubated 2.5 hours, then is cooled to 570 ℃ with the speed of 30 ℃/min, then is cooled to room temperature with the speed of 5 ℃/min;
2) quench treatment: the speed with 25 ℃/min is warming up to 810 ℃, is incubated 3.5 hours, then to adopt concentration be 35% brine sparge with the speed of 255 ℃/s, is cooled to rapidly 260 ℃, then is cooled to 80 ℃ with the speed of 15 ℃/min;
3) temper: the speed with 35 ℃/min is warming up to 710 ℃, is incubated 8 hours, then is cooled to room temperature with the speed of 10 ℃/min.
Embodiment 2
A hardening and tempering process for alloy steel pipe, comprises the steps:
1) anneal: the speed with 50 ℃/min is warming up to 700 ℃, is incubated 1.5 hours, then is cooled to 570 ℃ with the speed of 30 ℃/min, then is cooled to room temperature with the speed of 5 ℃/min;
2) quench treatment: the speed with 20 ℃/min is warming up to 800 ℃, is incubated 2.5 hours, then to adopt concentration be 30% brine sparge with the speed of 250 ℃/s, is cooled to rapidly 250 ℃, then is cooled to 70 ℃ with the speed of 15 ℃/min;
3) temper: the speed with 30 ℃/min is warming up to 700 ℃, is incubated 7 hours, then is cooled to room temperature with the speed of 10 ℃/min.
Embodiment 3
A hardening and tempering process for alloy steel pipe, comprises the steps:
1) anneal: the speed with 52 ℃/min is warming up to 710 ℃, is incubated 2 hours, then is cooled to 570 ℃ with the speed of 30 ℃/min, then is cooled to room temperature with the speed of 5 ℃/min;
2) quench treatment: the speed with 23 ℃/min is warming up to 804 ℃, is incubated 3 hours, then to adopt concentration be 32% brine sparge with the speed of 253 ℃/s, is cooled to rapidly 257 ℃, then is cooled to 76 ℃ with the speed of 15 ℃/min;
3) temper: the speed with 33 ℃/min is warming up to 702 ℃, is incubated 7.5 hours, then is cooled to room temperature with the speed of 10 ℃/min.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (1)
1. the hardening and tempering process of alloy steel pipe, is characterized in that, comprises the steps:
1) anneal: the speed with 50-55 ℃/min is warming up to 700-720 ℃, insulation 1.5-2.5 hour, then be cooled to 570 ℃ with the speed of 30 ℃/min, then be cooled to room temperature with the speed of 5 ℃/min;
2) quench treatment: the speed with 20-25 ℃/min is warming up to 800-810 ℃, insulation 2.5-3.5 hour, adopting concentration is that the brine sparge of 30-35% is cooled to 250-260 ℃ rapidly with the speed of 250-255 ℃/s again, then is cooled to 70-80 ℃ with the speed of 15 ℃/min;
3) temper: the speed with 30-35 ℃/min is warming up to 700-710 ℃, insulation 7-8 hour, then be cooled to room temperature with the speed of 10 ℃/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310621647.1A CN103725831B (en) | 2013-11-30 | 2013-11-30 | The hardening and tempering process of alloy steel pipe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310621647.1A CN103725831B (en) | 2013-11-30 | 2013-11-30 | The hardening and tempering process of alloy steel pipe |
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| Publication Number | Publication Date |
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| CN103725831A true CN103725831A (en) | 2014-04-16 |
| CN103725831B CN103725831B (en) | 2016-04-13 |
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| CN201310621647.1A Expired - Fee Related CN103725831B (en) | 2013-11-30 | 2013-11-30 | The hardening and tempering process of alloy steel pipe |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107236856A (en) * | 2017-06-28 | 2017-10-10 | 安徽华飞机械铸锻有限公司 | A kind of seamless steel pipe Technology for Heating Processing |
| CN107282690A (en) * | 2017-07-20 | 2017-10-24 | 繁昌县华特机械制造有限公司 | A stainless steel capillary processing technology |
| CN107365899A (en) * | 2017-07-20 | 2017-11-21 | 繁昌县华特机械制造有限公司 | Alloy steel pipe quenching and tempering process |
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| CN1251786A (en) * | 1999-10-19 | 2000-05-03 | 赵士英 | Technology for manufacturing mandrel used to roll seamless steel tube |
| KR20030002183A (en) * | 2001-06-30 | 2003-01-08 | 기아특수강 주식회사 | High Strength Wear Resistance Steel with Excellent Hardenability and Method of Producing the Same |
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| CN102367509A (en) * | 2010-11-08 | 2012-03-07 | 江苏诚德钢管股份有限公司 | Method for producing high steel grade corrosion-resistance steel pipe used for offshore petroleum platform |
| CN102676780A (en) * | 2012-05-30 | 2012-09-19 | 江苏华程工业制管股份有限公司 | Hardening and tempering technology of alloy-steel tube |
-
2013
- 2013-11-30 CN CN201310621647.1A patent/CN103725831B/en not_active Expired - Fee Related
Patent Citations (5)
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| KR20030002183A (en) * | 2001-06-30 | 2003-01-08 | 기아특수강 주식회사 | High Strength Wear Resistance Steel with Excellent Hardenability and Method of Producing the Same |
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| CN102367509A (en) * | 2010-11-08 | 2012-03-07 | 江苏诚德钢管股份有限公司 | Method for producing high steel grade corrosion-resistance steel pipe used for offshore petroleum platform |
| CN102676780A (en) * | 2012-05-30 | 2012-09-19 | 江苏华程工业制管股份有限公司 | Hardening and tempering technology of alloy-steel tube |
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| 韩波: "液压油缸缸筒用钢管调质工艺的改进", 《钢管》, vol. 42, no. 1, 28 February 2013 (2013-02-28) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107236856A (en) * | 2017-06-28 | 2017-10-10 | 安徽华飞机械铸锻有限公司 | A kind of seamless steel pipe Technology for Heating Processing |
| CN107236856B (en) * | 2017-06-28 | 2018-12-21 | 安徽华飞机械铸锻有限公司 | A kind of seamless steel pipe heat treatment process |
| CN107282690A (en) * | 2017-07-20 | 2017-10-24 | 繁昌县华特机械制造有限公司 | A stainless steel capillary processing technology |
| CN107365899A (en) * | 2017-07-20 | 2017-11-21 | 繁昌县华特机械制造有限公司 | Alloy steel pipe quenching and tempering process |
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| CN103725831B (en) | 2016-04-13 |
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Inventor after: Jiang Zhiyong Inventor before: Xu Xiaodong |
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Effective date of registration: 20170810 Address after: 528061, Guangdong, Foshan province Chancheng District, Nanzhuang Town, apricot head, Wucun Industrial Development Zone, one of the east side of the plant 8 Patentee after: Foshan Tong Guan metal products Co., Ltd. Address before: 215500, No. 8 Lane Village, Wang Zhen Town, Changshou City, Jiangsu, Suzhou Patentee before: CHANGSHU DONGXIN STEEL PIPE CO., LTD. |
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