CN104480278A - Thermal processing process for oil casing pup joint - Google Patents
Thermal processing process for oil casing pup joint Download PDFInfo
- Publication number
- CN104480278A CN104480278A CN201410833699.XA CN201410833699A CN104480278A CN 104480278 A CN104480278 A CN 104480278A CN 201410833699 A CN201410833699 A CN 201410833699A CN 104480278 A CN104480278 A CN 104480278A
- Authority
- CN
- China
- Prior art keywords
- short circuit
- casing pipe
- oil casing
- petroleum casing
- minutes
- 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
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
- C21D9/085—Cooling or quenching
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention discloses a thermal processing process for an oil casing pup joint. The thermal processing process comprises the following steps: (1) the oil casing pup joint is heated to 950 DEG C at the speed of 15 DEG C per minute and keeps the temperature for 200 minutes; (2) then the oil casing pup joint is quenched for 16 minutes in high-class quenching oil at the temperature of 78 DEG C; (3) the oil casing pup pipe is heated to 655 DEG C at the speed of 25 DEG C per minute and keeps the temperature for 30 minutes; (4) the oil casing pup pipe is air-cooled to a room temperature; (5) the oil casing pup pipe is heated to 915 DEG C at the speed of 10 DEG C per minute and keeps the temperature for 40 minutes; (6) the oil casing pup pipe is quenched for 13 minutes in high-class quenching oil at the temperature of 45 DEG C; (7) the oil casing pup joint is heated to 635 DEG C at the speed of 20 DEG C per minute and keeps the temperature for 100 minutes; (8) the oil casing pup pipe is air-cooled to a room temperature. The strength, the ductility and the hardness of the oil casing pup joint can be improved and accordingly the qualified rate of the oil casing pup joint is improved.
Description
Technical field
The present invention relates to the thermal treatment process of petroleum casing pipe short circuit.
Background technology
The intensity of existing petroleum casing pipe short circuit, unit elongation, hardness have much room for improvement.
Summary of the invention
The object of the present invention is to provide a kind of thermal treatment process of petroleum casing pipe short circuit, improve intensity, unit elongation, the hardness of petroleum casing pipe short circuit, thus improve the qualification rate of petroleum casing pipe short circuit.
For achieving the above object, technical scheme of the present invention designs a kind of thermal treatment process of petroleum casing pipe short circuit, comprises the steps:
1) petroleum casing pipe short circuit is warming up to 950 DEG C with 15 DEG C/min, is incubated 200 minutes;
2) again by the senior quenching oil quenching 16 minute of petroleum casing pipe short circuit at 78 DEG C;
3) again petroleum casing pipe short circuit is warming up to 655 DEG C with 25 DEG C/min, is incubated 30 minutes;
4) again by petroleum casing pipe short circuit air cooling to room temperature;
5) again petroleum casing pipe short circuit is warming up to 915 DEG C with 10 DEG C/min, is incubated 40 minutes;
6) again by the senior quenching oil quenching 13 minute of petroleum casing pipe short circuit at 45 DEG C;
7) again petroleum casing pipe short circuit is warming up to 635 DEG C with 20 DEG C/min, is incubated 100 minutes;
8) again by petroleum casing pipe short circuit air cooling to room temperature.
Advantage of the present invention and beneficial effect are: the thermal treatment process providing a kind of petroleum casing pipe short circuit, improve intensity, unit elongation, the hardness of petroleum casing pipe short circuit, thus improve the qualification rate of petroleum casing pipe short circuit.
Embodiment
Below in conjunction with embodiment, the specific embodiment of the present invention is further described.Following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
The technical scheme that the present invention specifically implements is:
A thermal treatment process for petroleum casing pipe short circuit, comprises the steps:
1) petroleum casing pipe short circuit is warming up to 950 DEG C with 15 DEG C/min, is incubated 200 minutes;
2) again by the senior quenching oil quenching 16 minute of petroleum casing pipe short circuit at 78 DEG C;
3) again petroleum casing pipe short circuit is warming up to 655 DEG C with 25 DEG C/min, is incubated 30 minutes;
4) again by petroleum casing pipe short circuit air cooling to room temperature;
5) again petroleum casing pipe short circuit is warming up to 915 DEG C with 10 DEG C/min, is incubated 40 minutes;
6) again by the senior quenching oil quenching 13 minute of petroleum casing pipe short circuit at 45 DEG C;
7) again petroleum casing pipe short circuit is warming up to 635 DEG C with 20 DEG C/min, is incubated 100 minutes;
8) again by petroleum casing pipe short circuit air cooling to room temperature.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from 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 thermal treatment process of petroleum casing pipe short circuit, is characterized in that, comprises the steps:
1) petroleum casing pipe short circuit is warming up to 950 DEG C with 15 DEG C/min, is incubated 200 minutes;
2) again by the senior quenching oil quenching 16 minute of petroleum casing pipe short circuit at 78 DEG C;
3) again petroleum casing pipe short circuit is warming up to 655 DEG C with 25 DEG C/min, is incubated 30 minutes;
4) again by petroleum casing pipe short circuit air cooling to room temperature;
5) again petroleum casing pipe short circuit is warming up to 915 DEG C with 10 DEG C/min, is incubated 40 minutes;
6) again by the senior quenching oil quenching 13 minute of petroleum casing pipe short circuit at 45 DEG C;
7) again petroleum casing pipe short circuit is warming up to 635 DEG C with 20 DEG C/min, is incubated 100 minutes;
8) again by petroleum casing pipe short circuit air cooling to room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410833699.XA CN104480278A (en) | 2014-12-24 | 2014-12-24 | Thermal processing process for oil casing pup joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410833699.XA CN104480278A (en) | 2014-12-24 | 2014-12-24 | Thermal processing process for oil casing pup joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104480278A true CN104480278A (en) | 2015-04-01 |
Family
ID=52754880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410833699.XA Pending CN104480278A (en) | 2014-12-24 | 2014-12-24 | Thermal processing process for oil casing pup joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104480278A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0718331A (en) * | 1993-07-05 | 1995-01-20 | Kubota Corp | Manufacture of 13 chromium stainless steel bent tube |
| CN1986843A (en) * | 2005-12-20 | 2007-06-27 | 渤海能克钻杆有限公司 | Heat treatment process of sulfur resistant drill pipe joint |
| CN101586450A (en) * | 2009-04-29 | 2009-11-25 | 天津钢管集团股份有限公司 | Have high strength and high toughness petroleum casing pipe and manufacture method thereof |
| CN101929313A (en) * | 2009-06-24 | 2010-12-29 | 宝山钢铁股份有限公司 | High-strength hydrogen-sulfide environmental corrosion-resistant seamless petroleum casing pipe and manufacturing method thereof |
| CN102329942A (en) * | 2011-10-25 | 2012-01-25 | 江苏胜大石油设备制造股份有限公司 | Thermal treatment process for directly-connected sleeve |
| CN102373374A (en) * | 2010-08-23 | 2012-03-14 | 宝山钢铁股份有限公司 | High strength sulfur resisting casing pipe and its heat treatment manufacturing method |
-
2014
- 2014-12-24 CN CN201410833699.XA patent/CN104480278A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0718331A (en) * | 1993-07-05 | 1995-01-20 | Kubota Corp | Manufacture of 13 chromium stainless steel bent tube |
| CN1986843A (en) * | 2005-12-20 | 2007-06-27 | 渤海能克钻杆有限公司 | Heat treatment process of sulfur resistant drill pipe joint |
| CN101586450A (en) * | 2009-04-29 | 2009-11-25 | 天津钢管集团股份有限公司 | Have high strength and high toughness petroleum casing pipe and manufacture method thereof |
| CN101929313A (en) * | 2009-06-24 | 2010-12-29 | 宝山钢铁股份有限公司 | High-strength hydrogen-sulfide environmental corrosion-resistant seamless petroleum casing pipe and manufacturing method thereof |
| CN102373374A (en) * | 2010-08-23 | 2012-03-14 | 宝山钢铁股份有限公司 | High strength sulfur resisting casing pipe and its heat treatment manufacturing method |
| CN102329942A (en) * | 2011-10-25 | 2012-01-25 | 江苏胜大石油设备制造股份有限公司 | Thermal treatment process for directly-connected sleeve |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150401 |
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| RJ01 | Rejection of invention patent application after publication |