CN201423404Y - Drill pipe upsetting mold - Google Patents
Drill pipe upsetting mold Download PDFInfo
- Publication number
- CN201423404Y CN201423404Y CN2009200468073U CN200920046807U CN201423404Y CN 201423404 Y CN201423404 Y CN 201423404Y CN 2009200468073 U CN2009200468073 U CN 2009200468073U CN 200920046807 U CN200920046807 U CN 200920046807U CN 201423404 Y CN201423404 Y CN 201423404Y
- Authority
- CN
- China
- Prior art keywords
- mold
- drill pipe
- upsetting
- thickening
- rear end
- 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
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Abstract
The utility model relates to a drill pipe upsetting mold, which is used for the upsetting processing of the drill pipe. The mold comprises an upsetting mold (1) and a clamping mold (4), wherein the rear end of the upsetting mold (1) is connected with the front end of the clamping mold (4); mold impressions at the rear end of the upsetting mold (1) and at the front end of the clamping mold (4) areboth arranged in taper hole shape; and the taper of the taper hole is 2-4 degrees. By amplifying the diameter of the mold impressions at the rear end of the upsetting mold and at the front end of theclamping mold, the problem of thinned and overproof outer diameter of an upset drill pipe at the part is solved. After the improved design, the size of the outer diameter of the drill pipe at the section (a range from an upset tube to the external upset disappearance part) is restored, and the size and shape of an upset tube body completely conform to the standard specifications.
Description
(1) technical field
The utility model relates to a kind of drill pipe thickening mould.The thickening that is used for drilling rod is handled.Belong to oil drill rocker manufacturing technology field.
(2) background technology
The present thickening mould that designs routinely in the industry, confirm through the check thickened product, thickening body upset end is in one section interval of external upset (EU) disappearance place, the body external diameter obviously diminishes, as 5, and " * 9.19 extra strong pipes more former area under control in external upset (EU) disappearance place 160～190mm scope nearly has the amplitude that attenuates of 1mm (see the L of Fig. 1
2The place), and wall thickness do not increase to some extent than the former area under control of body, that is to say that this section load basal area reduces, and obviously will become the critical section of drilling rod here.One of the reason that produces this phenomenon is that this position body generally also is in the thermal treatment zone (seeing the L section of Fig. 1), and mould should take into full account thermal expansion factor influence, and mould will make size decreases as up-sizing not because of contraction after the forging cooling; Another may be that this district's outer wall of upset after-stage is retrained by impression, and inwall is thrown off a gap with drift again, and axial compression stress is excessive, makes the surrender of subsiding that curves inwardly of the body unstability of this place heat, due to the generation plastic deformation.
(3) summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of extra strong pipe drill pipe thickening mould that drilling rod outside dimension in external upset (EU) disappearance place one segment limit is restored is provided.
The purpose of this utility model is achieved in that a kind of drill pipe thickening mould, comprise thickening model and clamping die, described thickening model rear end and clamping die front end join, and the impression of described thickening model rear end and clamping die front end all is arranged to the taper hole shape, and the tapering of this taper hole is 2～4 °.Just thickening model rear end and clamping die front end impression diameter are amplified.
The purpose of this utility model beneficial effect is:
The utility model is by amplifying thickening model rear end and clamping die front end impression diameter, solved this place's external diameter of thickening drilling rod overproof problem that attenuates.This section (extra strong pipe is in external upset (EU) disappearance place one segment limit) drilling rod outside dimension is restored after improving design, and thickening body size and dimension all meets standard code fully.
(4) description of drawings
Fig. 1 is drill pipe thickening mould structure schematic diagram in the past.
Fig. 2 is the utility model drill pipe thickening mould structure schematic diagram.
Among the figure:
Thickening model 1, drift 2, thickening body 3, clamping die 4.
(5) specific embodiment
Referring to Fig. 2, the utility model drill pipe thickening mould comprises thickening model 1 and clamping die 4, and described thickening model 1 rear end and clamping die 4 front ends join, and taper hole all is arranged in thickening model 1 rear end and clamping die 4 front end impressions, and the tapering of this taper hole is 2～4 °.
Claims (1)
1, a kind of drill pipe thickening mould, comprise thickening model (1) and clamping die (4), described thickening model (1) rear end and clamping die (4) front end join, and it is characterized in that: the impression of described thickening model (1) rear end and clamping die (4) front end all is arranged to the taper hole shape, and the tapering of this taper hole is 2～4 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200468073U CN201423404Y (en) | 2009-06-26 | 2009-06-26 | Drill pipe upsetting mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200468073U CN201423404Y (en) | 2009-06-26 | 2009-06-26 | Drill pipe upsetting mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201423404Y true CN201423404Y (en) | 2010-03-17 |
Family
ID=42022839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200468073U Expired - Fee Related CN201423404Y (en) | 2009-06-26 | 2009-06-26 | Drill pipe upsetting mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201423404Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111299345A (en) * | 2018-12-12 | 2020-06-19 | 本特勒汽车技术有限公司 | Method for calibrating a curved hollow metal chamber profile |
-
2009
- 2009-06-26 CN CN2009200468073U patent/CN201423404Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111299345A (en) * | 2018-12-12 | 2020-06-19 | 本特勒汽车技术有限公司 | Method for calibrating a curved hollow metal chamber profile |
| CN111299345B (en) * | 2018-12-12 | 2022-05-03 | 本特勒汽车技术有限公司 | Method for calibrating a curved hollow metal chamber profile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100317 Termination date: 20170626 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |