CN1210513C - Method of producing connection hoop for petroleum steel pipe - Google Patents
Method of producing connection hoop for petroleum steel pipe Download PDFInfo
- Publication number
- CN1210513C CN1210513C CN 03134226 CN03134226A CN1210513C CN 1210513 C CN1210513 C CN 1210513C CN 03134226 CN03134226 CN 03134226 CN 03134226 A CN03134226 A CN 03134226A CN 1210513 C CN1210513 C CN 1210513C
- Authority
- CN
- China
- Prior art keywords
- petroleum
- steel pipe
- present
- box cupling
- petroleum steel
- 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.)
- Expired - Fee Related
Links
Landscapes
- Forging (AREA)
Abstract
The present invention relates to the field of component processing used for petroleum industry, particularly to a method of producing connection hoops for petroleum steel pipes. The present invention overcomes the defects of large investment of needed devices, big deviation of the thickness of steel pipes, long specification exchange period and low-density of metal inner structures of the existing production technology. The solving proposal of the present invention is the method of producing connection hoops for petroleum steel pipes for overcoming the defects of the prior art. The present invention is characterized in that the method of producing connection hoops for petroleum steel pipee orderly comprises the following steps that (1), round steel is firstly sawed into short blank material; (2), the blank material is directly punched into a semi-finished product of a connection hoop through a mould method and thermal treatment is carried out; (3), thread processing is carried out.
Description
Affiliated technical field:
The present invention relates to the manufacture field of a kind of petroleum industry, be specifically related to the production method of petroleum steel pipe with box cupling with parts.
Background technique:
Petroleum industry is the industry that a kind of needs use steel pipe in a large number, and the borehole wall sealing behind oil drilling, the oil discharge passage the oil recovery process all be unable to do without steel pipe, and these steel pipes all connect by thread forms.This connection needs a kind of parts that are box cupling, and box cupling is the important component part in the OCTG, and it is the steel pipe than the big specification of original steel pipe, processes the internal thread that can be connected with the outside thread of steel tube end part processing on its inwall.The general mode of present domestic box cupling production is: rolling bores a hole becomes long one by one steel pipe through joining at first will to justify caststeel ingot, becomes the box cupling semi-finished product of lacking one by one through the saw weak point then, carries out screw thread processing at last again.The shortcoming that this method exists is: the equipment input that 1, cost height, the connection mode of rolling needs is very big; 2, the specification of Sheng Chaning is limited, needs bigger batch and just can produce, because of the investment of production new varieties is very big, so it is longer to change a kind of specification needed time; 3, longer because of a kind of manufacture cycle of specification, so the market adaptability to changes is poor; 4, the thickness of steel pipe precision that processes with this kind mode is lower, and wall thickness deviation is big, and to compare its residual capacity bigger with the finished product wall thickness of needs processing; 5, metal inside is organized also relatively loosely, and consistency is low.
Summary of the invention:
The present invention will overcome existing production technology needs the equipment input bigger, and the thickness of steel pipe deviation is big, changes the long and low weakness of metal inside dense structure degree of specification cycle.
For overcoming the shortcoming of prior art, solution of the present invention is: a kind of petroleum steel pipe production method of box cupling, and its special way is, comprises the steps successively, 1. earlier circular steel is sawn into short blank; 2. the method with mould directly strikes out the box cupling semi-finished product with blank, heat-treats again; 3. carry out screw thread processing.
The method of above-mentioned mould is the moulding process that utilizes in the Forging Technology, i.e. blank once-through after heating.
Above-mentioned moulding is to carry out on hydraulic press or rotary swaging machine.
Compared with prior art, advantage of the present invention is:
1, cost of investment is low, and the equipment input that this processing mode needs is significantly less than connection and rolls mode; 2, the specification of Sheng Chaning is many, can realize the production of many kinds, multiple batches of and small lot; 3, with short production cycle, so the market strong adaptability; What 4, this method adopted is the mould-forming mode, the thickness of steel pipe precision size height that processes, and wall thickness deviation is little, and connection rolls perforation means saving material; 5, the metal inside tissue is fine and smooth, and material property is improved; 6, not only available round caststeel ingot, also available round steel pipe are as raw material, and waste and old pipe also can become the acceptable product of another one specification after this processes.
Embodiment:
The present invention comprises the steps successively, 1. will justify caststeel ingot and be sawn into short blank, 2. the round metal base that will block is one by one put into pre-designed press tool after heating, utilize the hydraulic press extruding to form box cupling circle base one by one, heat-treat again, 3. after screw thread processing, form final products.
Claims (3)
1, a kind of petroleum steel pipe is characterized in that: comprise the steps successively, 1. earlier circular steel is sawn into short blank with the production method of box cupling; 2. the method with mould directly strikes out the box cupling semi-finished product with blank, heat-treats again; 3. carry out screw thread processing.
2, the petroleum steel pipe according to claim 1 production method of box cupling, it is characterized in that: the method for described mould is the moulding process that utilizes in the Forging Technology, i.e. blank once-through after heating.
3, the petroleum steel pipe according to claim 2 production method of box cupling, it is characterized in that: described moulding is to carry out on hydraulic press or rotary swaging machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03134226 CN1210513C (en) | 2003-06-02 | 2003-06-02 | Method of producing connection hoop for petroleum steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03134226 CN1210513C (en) | 2003-06-02 | 2003-06-02 | Method of producing connection hoop for petroleum steel pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1455141A CN1455141A (en) | 2003-11-12 |
| CN1210513C true CN1210513C (en) | 2005-07-13 |
Family
ID=29260496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03134226 Expired - Fee Related CN1210513C (en) | 2003-06-02 | 2003-06-02 | Method of producing connection hoop for petroleum steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1210513C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110653562A (en) * | 2018-06-29 | 2020-01-07 | 宝山钢铁股份有限公司 | Manufacturing method of oil casing coupling blank |
-
2003
- 2003-06-02 CN CN 03134226 patent/CN1210513C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1455141A (en) | 2003-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20210346941A1 (en) | Novel hollow shaft manufacturing method | |
| CN101695739B (en) | Forging process of large tee and large skew tee | |
| CN100469486C (en) | Rolling preparation method for thick-walled and thin-bottomed basin parts | |
| CN101811149A (en) | Manufacturing method of high alloy seamless steel tube | |
| CN104139279B (en) | The manufacturing process of interior trapezoidal grooved ring shape part | |
| CN104551547A (en) | Processing process of high-intensity titanium alloy pipe fittings | |
| CN103537595B (en) | Splined driveshaft axle Forging Technology | |
| CN110193579B (en) | Integrated forging method for transition section and barrel of hydrogenation reactor | |
| CN1210513C (en) | Method of producing connection hoop for petroleum steel pipe | |
| CN203592098U (en) | Convex die of transmission shaft spline shaft horizontal forging die | |
| CN201448318U (en) | Pipe clamp head | |
| CN103406720A (en) | Flange manufacturing method | |
| CN203592100U (en) | Primary forging die body of transmission shaft spline shaft horizontal forging die | |
| CN103071693B (en) | A kind of squeezing needle for big-size thinning plastic tubing or hollow profile and pressing method | |
| CN110640075A (en) | Forming method of L-shaped ring products | |
| CN214557050U (en) | Ring rolling machine core roller die suitable for long-neck welding neck flange | |
| CN202264067U (en) | Production device for connecting rod | |
| CN107876672A (en) | A kind of flanged ball valve end cap rolling ring manufacturing process | |
| CN203592099U (en) | Transmission shaft spline shaft horizontal forging die | |
| CN1947882A (en) | Method for producing flat heat-radiating tubes | |
| CN105921948A (en) | Efficient and precise forming method of large and medium hollow disc-shaped forging with complex structure | |
| CN219664893U (en) | Oval forging forming device | |
| CN102248367A (en) | Production method and production device for connecting rod | |
| CN204396510U (en) | Direction column of motorcycle conical pipe processing mold | |
| CN112474873B (en) | Manufacturing method of seamless reducer pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050713 Termination date: 20120602 |