CN103725831A - Hardening and tempering process of alloy-steel pipe - Google Patents

Hardening and tempering process of alloy-steel pipe Download PDF

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Publication number
CN103725831A
CN103725831A CN201310621647.1A CN201310621647A CN103725831A CN 103725831 A CN103725831 A CN 103725831A CN 201310621647 A CN201310621647 A CN 201310621647A CN 103725831 A CN103725831 A CN 103725831A
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China
Prior art keywords
speed
temperature
tempering
steel pipe
hardening
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Application number
CN201310621647.1A
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Chinese (zh)
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CN103725831B (en
Inventor
须晓东
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Foshan Tong Guan metal products Co., Ltd.
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CHANGSHU DONGXIN STEEL PIPE Co Ltd
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Priority to CN201310621647.1A priority Critical patent/CN103725831B/en
Publication of CN103725831A publication Critical patent/CN103725831A/en
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Publication of CN103725831B publication Critical patent/CN103725831B/en
Expired - Fee Related legal-status Critical Current
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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

The hardening and tempering process of alloy steel pipe
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.
CN201310621647.1A 2013-11-30 2013-11-30 The hardening and tempering process of alloy steel pipe Expired - Fee Related CN103725831B (en)

Priority Applications (1)

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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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CN103725831A true CN103725831A (en) 2014-04-16
CN103725831B CN103725831B (en) 2016-04-13

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Cited By (3)

* Cited by examiner, † Cited by third party
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 kind of Stainless Steel Capillary pipe processing technique
CN107365899A (en) * 2017-07-20 2017-11-21 繁昌县华特机械制造有限公司 A kind of alloy pipe hardening and tempering process

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN101760605A (en) * 2009-12-17 2010-06-30 湖南华菱湘潭钢铁有限公司 High-strength pipe steel heat treatment process
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN101760605A (en) * 2009-12-17 2010-06-30 湖南华菱湘潭钢铁有限公司 High-strength pipe steel heat treatment process
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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)

* Cited by examiner, † Cited by third party
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 kind of Stainless Steel Capillary pipe processing technique
CN107365899A (en) * 2017-07-20 2017-11-21 繁昌县华特机械制造有限公司 A kind of alloy pipe hardening and tempering process

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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.

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160413

Termination date: 20171130

CF01 Termination of patent right due to non-payment of annual fee