CN201027502Y - Abrasion-proof corrosion resistant sucker-rod coupling - Google Patents
Abrasion-proof corrosion resistant sucker-rod coupling Download PDFInfo
- Publication number
- CN201027502Y CN201027502Y CNU2007201488060U CN200720148806U CN201027502Y CN 201027502 Y CN201027502 Y CN 201027502Y CN U2007201488060 U CNU2007201488060 U CN U2007201488060U CN 200720148806 U CN200720148806 U CN 200720148806U CN 201027502 Y CN201027502 Y CN 201027502Y
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- box cupling
- joint
- corrosion resistant
- self
- abrasion
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Abstract
The utility model relates to an abrasion and corrosion resistant sucker rod joint which is a cylinder, the middle of the joint is provided with an axial-direction screw thread pylome, the surface of the joint is a smooth cylindrical surface, the place where the cylindrical surface is connected with the end face of the joint is an chamfer angle a which is more than fourteen 14 degrees and less than thirty degrees, and the place where the chamfer incline is combined with the cylindrical surface of the joint is a circular arc, the radius of which is smaller than 1.67 millimeter; the outer surface of the joint is provided with an alloy-coating which has a thickness of 0.25-0.60 millimeter and abrasion and corrosion resistant functions. The surface of the joint is designed into a smooth cylindrical surface in the utility model; therefore, the cost is reduced, the coating can be easily coated evenly on the surface of the joint, the friction area of the joint and the oil pipe is enlarged to reduce abrasion, and the two ends of the platform of the joint will no longer be worn and eroded first.
Description
Technical field
The invention belongs to the oil equipment field, be specifically related to a kind of rod collar of wear resistant corrosion resistant.
Background technology
Current, along with the degree of depth of oil well continues to increase arrival with high water-cut stage, rod collar is faced with more and more severeer wearing and tearing and corrosive environment, so the box cupling of corrosion-proof wear excellent performance has become the product that each elephant both at home and abroad extremely needs.The box cupling of domestic ordinary metallic material mostly is difficult to adapt to current wearing and tearing and corrosive environment aspect material, mostly need to carry out surfacing, and is wherein general with the surface spraying weld Ni-based coating.But owing to have halfpace on the common box cupling structure, make coating in preparation process, can not evenly form sometimes at the box cupling matrix surface, cause platform two ends transition position become wearing and tearing and corrosion process in preferential failure position, and because the existence of platform, reduce the contact area in coupling surface and the tube inner wall friction process significantly, become the one of the main reasons that causes the tube inner wall wearing and tearing.In addition, though find in the use that present Ni based spray-welded box cupling has excellent corrosion-proof wear performance and certain friction reducing effect, still relatively more serious to the wearing and tearing of oil pipe.Therefore, existing box cupling is improved on the structure, exploitation simultaneously can be to box cupling and oil pipe effective novel self-lubricating rod collar of protection all, and is very meaningful and be worth to the wearing and tearing of oil pipe to solving the oil field box cupling effectively and comparatively up hill and dale.
The utility model content
The rod collar that the purpose of this invention is to provide a kind of wear resistant corrosion resistant of the anticorrosive wear-resistant performance that can significantly improve box cupling.
For achieving the above object, the utility model adopts following design scheme: a kind of rod collar of wear resistant corrosion resistant, this box cupling is a cylinder, this box cupling middle part has an axial thread through hole, it is characterized in that, this box cupling side is the smooth face of cylinder, this box cupling face of cylinder and this coupling face connecting portion are that a chamfering is a inclined-plane, 14 °＜a＜30 °, and the junction, the face of cylinder of this chamfering inclined-plane and this box cupling is the circular arc of a radius less than 1.67mm, and the thickness that this box cupling external surface has one deck wear resistant corrosion resistant is 0.25～0.60mm alloy coat.
Alloy coat on the external surface of this box cupling is the nickel-based self-fluxing alloy coating.
Alloy coat on the external surface of this box cupling is the self-lubricating nickel-base alloy coating.
The utility model has the advantages that:
1, the rod collar of the utility model wear resistant corrosion resistant, by removing the podium design of common box cupling, the lateral layout of box cupling is become the smooth face of cylinder, the one, reduced the machine program of the platform of box cupling of the prior art, saved cost, the 2nd, make coating be easy to evenly be coated in the surface of box cupling, the 3rd, make box cupling and oil pipe friction area strengthen, help reducing wear, the 4th, avoided its place, platform two ends of box cupling of the prior art to become the preferential position of wearing and tearing and corrosion.
2, the rod collar of the utility model wear resistant corrosion resistant by the chamfer design to box cupling side and end face, makes the problem of the end face scratch tube inner wall that common box cupling exists improve.
Description of drawings:
Fig. 1 is the rod collar structural representation of the utility model wear resistant corrosion resistant
Fig. 2 is the utility model partial enlarged drawing
The specific embodiment
As shown in Figure 1, the rod collar of the utility model wear resistant corrosion resistant, box cupling 1 is a cylinder, box cupling 1 middle part has an axial thread through hole 3, the two ends of the axial thread through hole 3 of box cupling and sucker rod bolt, the side of box cupling 1 is the smooth face of cylinder, the box cupling face of cylinder and coupling face connecting portion are that a chamfering is the inclined-plane of a, 14 °＜a＜30 ° (as shown in Figure 2), and this chamfering inclined-plane 4 is the circular arc of a radius less than 1.67mm with the junction, the face of cylinder of box cupling, and box cupling 1 external surface is formed with the alloy coat that a layer thickness is 0.25～0.60mm with hot spray welding process.
The nickel-based self-fluxing alloy coating of alloy coat on the external surface of this box cupling for forming with hot spray welding process.
The self-lubricating nickel-base alloy coating of alloy coat on the external surface of this box cupling for forming with hot spray welding process.
This self-lubricating nickel-base alloy coating 2 is evenly mixed the after heat surfacing by the FeS powder of 5%～30% quality percentage composition with the Ni60 self-fluxing alloy powder of 70%～95% quality percentage composition and is formed.
The preparation method of the rod collar of the utility model wear resistant corrosion resistant is as follows:
1, according to no podium design processing box cupling blank.
2, clean box cupling blank surface and oil contaminant, dry up.
3, blasting treatment is carried out on box cupling blank surface, makes blank surface derusting, alligatoring and activation.
4, at the self-lubricating nickel-base alloy powder of box cupling blank surface spraying weld one deck 0.25～0.60mm thickness, this powder is evenly mixed by the FeS powder of 5%～30% quality percentage composition and the Ni60 self-fluxing alloy powder of 70%～95% quality percentage composition.
5, handle the back to the polishing of box cupling cylindrical through coupling surface spraying, remelting, box cupling side and the polishing of end face binding site chamfering are slick and sly.
6, tapping obtains the rod collar of wear resistant corrosion resistant to the box cupling inner chamber at last.The self-lubricating nickel-base alloy coating is evenly mixed the back surfacing by the FeS powder of 5%～30% quality percentage composition and the Ni60 self-fluxing alloy powder of 70%～95% quality percentage composition and is formed, the surfacing of self-lubricating nickel-base alloy coating, can significantly improve the wear-and corrosion-resistant and the self-lubricating property of box cupling, solve the wearing and tearing and the corrosion of box cupling effectively, and significantly reduce the wearing and tearing of box cupling tube inner wall.
Self-lubricating nickel-base alloy coating embodiment one in the utility model, alloy coat 2 on this box cupling 1 external surface of a is the self-lubricating nickel-base alloy coating, thickness 0.40mm, wherein the self-lubricating nickel-base alloy coating is evenly mixed the back surfacing by the FeS powder of 5% quality percentage composition and the Ni60 self-fluxing alloy powder of 95% quality percentage composition and is formed the DG.Ni60A self-fluxing alloy powder that the Ni60 self-fluxing alloy powder selects for use Chengdu big photo-thermal sprayed on material Co., Ltd to produce; The FeS powder is selected other FeS powder of the pure level of analysis general on the market for use.The granularity of FeS powder and Ni60 self-fluxing alloy powder is all 20 μ m～102 μ m.
Self-lubricating nickel-base alloy coating embodiment two in the utility model, alloy coat 2 on this box cupling 1 external surface of a is the self-lubricating nickel-base alloy coating, thickness 0.40mm, wherein the self-lubricating nickel-base alloy coating is evenly mixed the back surfacing by the FeS powder of 10% quality percentage composition and the Ni60 self-fluxing alloy powder of 90% quality percentage composition and is formed the DG.Ni60A self-fluxing alloy powder that the Ni60 self-fluxing alloy powder selects for use Chengdu big photo-thermal sprayed on material Co., Ltd to produce; The FeS powder is selected other FeS powder of the pure level of analysis general on the market for use.The granularity of FeS powder and Ni60 self-fluxing alloy powder is all 20 μ m～102 μ m.
Self-lubricating nickel-base alloy coating embodiment three in the utility model, alloy coat 2 on this box cupling 1 external surface of a is the self-lubricating nickel-base alloy coating, thickness 0.40mm, wherein the self-lubricating nickel-base alloy coating is evenly mixed the back surfacing by the FeS powder of 30% quality percentage composition and the Ni60 self-fluxing alloy powder of 70% quality percentage composition and is formed the DG.Ni60A self-fluxing alloy powder that the Ni60 self-fluxing alloy powder selects for use Chengdu big photo-thermal sprayed on material Co., Ltd to produce; The FeS powder is selected other FeS powder of the pure level of analysis general on the market for use.The granularity of FeS powder and Ni60 self-fluxing alloy powder is all 20 μ m～102 μ m.
Claims (2)
1. the rod collar of a wear resistant corrosion resistant, this box cupling is a cylinder, this box cupling middle part has an axial thread through hole, it is characterized in that, this box cupling side is the smooth face of cylinder, and this box cupling face of cylinder and this coupling face connecting portion are that a chamfering is the inclined-plane of a, 14 °＜a＜30 °, and the junction, the face of cylinder of this chamfering inclined-plane and this box cupling is the circular arc of a radius less than 1.67mm, and the thickness that this box cupling external surface has one deck wear resistant corrosion resistant is 0.25～0.60mm alloy coat.
2. the rod collar of wear resistant corrosion resistant as claimed in claim 1 is characterized in that, the alloy coat on the external surface of this box cupling is the nickel-based self-fluxing alloy coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201488060U CN201027502Y (en) | 2007-04-17 | 2007-04-17 | Abrasion-proof corrosion resistant sucker-rod coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201488060U CN201027502Y (en) | 2007-04-17 | 2007-04-17 | Abrasion-proof corrosion resistant sucker-rod coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201027502Y true CN201027502Y (en) | 2008-02-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201488060U Expired - Fee Related CN201027502Y (en) | 2007-04-17 | 2007-04-17 | Abrasion-proof corrosion resistant sucker-rod coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201027502Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747095A (en) * | 2015-02-17 | 2015-07-01 | 中国石油天然气股份有限公司 | Polyformaldehyde sucker rod coupling and manufacturing method thereof |
| CN108533220A (en) * | 2018-02-26 | 2018-09-14 | 中国石油天然气股份有限公司 | Anti-corrosion derusting by sandblasting screw thread protective device and method outside a kind of oil field tubing and casing |
-
2007
- 2007-04-17 CN CNU2007201488060U patent/CN201027502Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747095A (en) * | 2015-02-17 | 2015-07-01 | 中国石油天然气股份有限公司 | Polyformaldehyde sucker rod coupling and manufacturing method thereof |
| CN108533220A (en) * | 2018-02-26 | 2018-09-14 | 中国石油天然气股份有限公司 | Anti-corrosion derusting by sandblasting screw thread protective device and method outside a kind of oil field tubing and casing |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080227 Termination date: 20160417 |