CN105525081A - Quenching-and-tempering heat treatment method for steel pipe - Google Patents
Quenching-and-tempering heat treatment method for steel pipe Download PDFInfo
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- CN105525081A CN105525081A CN201410522788.2A CN201410522788A CN105525081A CN 105525081 A CN105525081 A CN 105525081A CN 201410522788 A CN201410522788 A CN 201410522788A CN 105525081 A CN105525081 A CN 105525081A
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Abstract
The invention discloses a quenching-and-tempering heat treatment method for a steel pipe, and belongs to the field of quenching-and-tempering heat treatment. The quenching-and-tempering heat treatment method is used for improving the strength and rigidity of the steel pipe and achieving anti-corrosion treatment. The quenching-and-tempering heat treatment method comprises the steps that the steel pipe is put in a quenching furnace to be heated at the temperature of 1050 DEG C for 70 min; spray cooling is carried out on the steel pipe subjected to quenching heat treatment at the pressure of 5 MPa until the temperature is 110 DEG C, and the water flow speed is 2 m/s; the steel pipe subjected to spray cooling is fed into a tempering mechanism to be subjected to tempering heat treatment at the temperature of 650 DEG C for 60 min; and air cooling is carried out on the steel pipe subjected to tempering treatment until the temperature reaches the room temperature, and then detection is carried out. By means of the quenching-and-tempering heat treatment method for the steel pipe, the steel pipe has high rigidity and good strength, meets the conditions of pressure-bearing transportation, and has the function of corrosion resistance. The heat treatment process is simple, good in treatment effect and low in cost.
Description
Technical field
The invention belongs to Tempering and Quenching field, specifically, particularly relate to a kind of Tempering and Quenching method of steel pipe.
Background technology
Constantly advance along with socioeconomic, steel are popularized gradually in the application of different field, steel pipe is as a kind of long distance delivery tubing of high-quality, more and more important role is play in the pressure-bearing conveying of oil, Sweet natural gas etc., such as, in the exploitation and transport of oil, steel pipe is just needed to possess high intensity, toughness, anticorrosive etc., but the steel meeting this situation complex process, power consumption in treating processes is higher, and the steel tube performance processed is unstable, does not possess the condition promoted the use of.
Summary of the invention
The object of the present invention is to provide a kind of Tempering and Quenching method of steel pipe, it can make steel pipe after overmodulation thermal treatment, have higher toughness and good intensity, meet the condition of the pressure-bearing such as oil, Sweet natural gas transport, corrosion resistant function can be had through follow-up processing, and heat-treatment processing process is simple, processing effect is good, and cost is low.
The present invention is achieved by the following technical solutions:
A Tempering and Quenching method for steel pipe, comprises the following steps:
1), by steel pipe send in quenching furnance and heat, Heating temperature is 900 ~ 1120 DEG C, and heat-up time is 60 ~ 80min;
2), by the steel pipe through Quench heating process carry out spraying cooling, the pressure of spraying cooling is 5 ~ 6MPa, and flow velocity is 1.5 ~ 2m/s, and being cooled to temperature is 100 ~ 120 DEG C;
3), by the steel pipe feeding tempering mechanism through spraying cooling carry out heating tempering, tempering temperature is 600 ~ 700 DEG C, and tempering time is 50 ~ 70min;
4), by the above-mentioned steel pipe through temper carry out air cooling, detect after air cooling to room temperature.
Compared with prior art, the present invention has following beneficial effect:
Steel Pipe Heat treatment process provided by the present invention can make steel pipe after overmodulation thermal treatment, have higher toughness and good intensity, meet the condition of the pressure-bearing such as oil, Sweet natural gas transport, corrosion resistant function can be had through follow-up processing, and heat-treatment processing process is simple, processing effect is good, and cost is low.
Embodiment
Below in conjunction with embodiment, the present invention is described further.
Embodiment 1: a kind of Tempering and Quenching method of steel pipe, comprises the following steps:
1), by steel pipe send in quenching furnance and heat, Heating temperature is 900 DEG C, and heat-up time is 60min;
2), by the steel pipe through Quench heating process carry out spraying cooling, the pressure of spraying cooling is 5MPa, and flow velocity is 1.5m/s, and being cooled to temperature is 100 DEG C;
3), by the steel pipe feeding tempering mechanism through spraying cooling carry out heating tempering, tempering temperature is 600 DEG C, and tempering time is 50min;
4), by the above-mentioned steel pipe through temper carry out air cooling, detect after air cooling to room temperature.
Embodiment 2: a kind of Tempering and Quenching method of steel pipe, comprises the following steps:
1), by steel pipe send in quenching furnance and heat, Heating temperature is 91120 DEG C, and heat-up time is 80min;
2), by the steel pipe through Quench heating process carry out spraying cooling, the pressure of spraying cooling is 6MPa, and flow velocity is 2m/s, and being cooled to temperature is 120 DEG C;
3), by the steel pipe feeding tempering mechanism through spraying cooling carry out heating tempering, tempering temperature is 700 DEG C, and tempering time is 70min;
4), by the above-mentioned steel pipe through temper carry out air cooling, detect after air cooling to room temperature.
Embodiment 3: a kind of Tempering and Quenching method of steel pipe, comprises the following steps:
1), by steel pipe send in quenching furnance and heat, Heating temperature is 1050 DEG C, and heat-up time is 70min;
2), by the steel pipe through Quench heating process carry out spraying cooling, the pressure of spraying cooling is 5MPa, and flow velocity is 2m/s, and being cooled to temperature is 110 DEG C;
3), by the steel pipe feeding tempering mechanism through spraying cooling carry out heating tempering, tempering temperature is 650 DEG C, and tempering time is 60min;
4), by the above-mentioned steel pipe through temper carry out air cooling, detect after air cooling to room temperature.
Steel Pipe Heat treatment process provided by the present invention can make steel pipe after overmodulation thermal treatment, have higher toughness and good intensity, meet the condition of the pressure-bearing such as oil, Sweet natural gas transport, corrosion resistant function can be had through follow-up processing, and heat-treatment processing process is simple, processing effect is good, and cost is low.
Claims (1)
1. a Tempering and Quenching method for steel pipe, is characterized in that, comprise the following steps:
1), by steel pipe send in quenching furnance and heat, Heating temperature is 900 ~ 1120 DEG C, and heat-up time is 60 ~ 80min;
2), by the steel pipe through Quench heating process carry out spraying cooling, the pressure of spraying cooling is 5 ~ 6MPa, and flow velocity is 1.5 ~ 2m/s, and being cooled to temperature is 100 ~ 120 DEG C;
3), by the steel pipe feeding tempering mechanism through spraying cooling carry out heating tempering, tempering temperature is 600 ~ 700 DEG C, and tempering time is 50 ~ 70min;
4), by the above-mentioned steel pipe through temper carry out air cooling, detect after air cooling to room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410522788.2A CN105525081A (en) | 2014-09-30 | 2014-09-30 | Quenching-and-tempering heat treatment method for steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410522788.2A CN105525081A (en) | 2014-09-30 | 2014-09-30 | Quenching-and-tempering heat treatment method for steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105525081A true CN105525081A (en) | 2016-04-27 |
Family
ID=55767603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410522788.2A Withdrawn CN105525081A (en) | 2014-09-30 | 2014-09-30 | Quenching-and-tempering heat treatment method for steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105525081A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107739794A (en) * | 2017-11-24 | 2018-02-27 | 北京京诚之星科技开发有限公司 | Online quenching device, production line and production process for quenching and tempering heat treatment of steel pipe |
-
2014
- 2014-09-30 CN CN201410522788.2A patent/CN105525081A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107739794A (en) * | 2017-11-24 | 2018-02-27 | 北京京诚之星科技开发有限公司 | Online quenching device, production line and production process for quenching and tempering heat treatment of steel pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160427 |