CN204113632U - High efficient, high pressure plunger pump high abrasion plunger - Google Patents
High efficient, high pressure plunger pump high abrasion plunger Download PDFInfo
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- CN204113632U CN204113632U CN201420135834.9U CN201420135834U CN204113632U CN 204113632 U CN204113632 U CN 204113632U CN 201420135834 U CN201420135834 U CN 201420135834U CN 204113632 U CN204113632 U CN 204113632U
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- plunger
- ceramic coating
- matrix
- coating
- high pressure
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Abstract
The utility model belongs to petroleum machinery apparatus field, is specifically related to a kind of high efficient, high pressure plunger pump high abrasion plunger, comprises plunger matrix, it is characterized in that: plunger outer surface of matrix sprays Ni-Al alloy coating, ceramic coating successively.This high efficient, high pressure plunger pump is reasonable with high abrasion piston structure, can be improved the surface hardness of plunger, be reduced the surface roughness plunger of plunger, thus improve wear resistance and the corrosion resistance of plunger, increase the service life by ceramic coating; The combination force of plunger matrix and ceramic coating can be improved by Ni-Al alloy coating, improve in conjunction with mechanical strength, ensure the comprehensive mechanical performance of plunger.
Description
Technical field
The utility model relates to a kind of high efficient, high pressure plunger pump high abrasion plunger, belongs to petroleum machinery apparatus field.
Background technique
High efficient, high pressure plunger pump is the key equipment that oil field is gathered for oil gas well cementing operation, pressure break, pickling and note, there is working pressure high (usual plunger pump working pressure is 20MPa ~ 140MPa), the load feature such as heavily.This kind equipment is made up of power end and fluid end, plunger pump operationally, the rotation torque of diesel engine or motor is changed into the axially reciprocating of plunger by power end by crankshaft & connecting, fluid end working principle is positive displacement, when plunger moves forward, suction valve closure, expulsion valve is opened, and high-pressure medium is discharged; When plunger moves backward, suction valve is opened, and expulsion valve cuts out, and high-pressure medium sucks, and by the continuous to-and-fro motion of plunger, completes the continuous discharge process of high-pressure medium.
Plunger is the vital part of high efficient, high pressure hydraulic end of plunger pump, seal ring is formed by coordinating with plunger rubber floppy disk root, forming the working pressure of hydraulic end of plunger pump and continuous operation process for ensureing, therefore needing outer plunger surface must can corrosion-resistant and high abrasion.At present, usually ensure the wear resistance in its using process at outer plunger surface surfacing Ni60 or Ni62 sintered alloy, but there is following problem:
(1) during surfacing, body material and coating binding force poor, adopt signal layer coating structure, generally at about 50MPa;
(2) coating hardness is low, is generally HRc56 ~ HRc60, wears no resistance.
Model utility content
According to above deficiency of the prior art, the technical problems to be solved in the utility model is: provide a kind of rational in infrastructure, plunger working surface hardness can be increased substantially and there is the high efficient, high pressure plunger pump high abrasion plunger of good wear resistance, corrosion resistance, mechanical strength.
High efficient, high pressure plunger pump high abrasion plunger described in the utility model, comprise plunger matrix, plunger outer surface of matrix sprays Ni-Al alloy coating, ceramic coating successively.
By ceramic coating, the surface hardness of plunger can be improved on the one hand, namely improve the wear resistance of plunger, the surface roughness of plunger can be reduced on the other hand, namely improve the corrosion resistance of plunger, thus extend the working life of plunger; The combination force of plunger matrix and ceramic coating can be improved by Ni-Al alloy coating, improve in conjunction with mechanical strength, ensure the comprehensive mechanical performance of plunger.
Wherein:
The thickness of Ni-Al alloy coating is 0.1mm, makes the bonding strength of plunger matrix and ceramic coating improve raising 10% ~ 15%, reaches more than 75MPa, ensures the comprehensive mechanical performance of plunger.
Ceramic coating adopts P7412 ceramic coating, SiO in this ceramic coating
2content 5%, Cr
2o
3content 92%, TiO
2content 3%, can make the surface hardness > HRc70 of plunger by this ceramic coating, surface roughness is Ra0.2 ~ Ra0.4, improves wear resistance, corrosion resistance.The thickness of P7412 ceramic coating preferably 0.2 ~ 0.3mm in the utility model.
The beneficial effect that the utility model is compared with prior art had is:
This high efficient, high pressure plunger pump is reasonable with high abrasion piston structure, can be improved the surface hardness of plunger, be reduced the surface roughness plunger of plunger, thus improve wear resistance and the corrosion resistance of plunger, increase the service life by ceramic coating; The combination force of plunger matrix and ceramic coating can be improved by Ni-Al alloy coating, improve in conjunction with mechanical strength, ensure the comprehensive mechanical performance of plunger.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1, plunger matrix; 2, Ni-Al alloy coating; 3, ceramic coating.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
As shown in Figure 1, this high efficient, high pressure plunger pump high abrasion plunger comprises plunger matrix 1, and plunger matrix 1 outer surface sprays Ni-Al alloy coating 2, ceramic coating 3 successively.
The preparation process of this plunger is as follows:
Semi finishing → fine grinding ceramic coating 3 → sealing pores → detection → franking → cleaning → packaging → warehouse-in after the 3 → spray of semi finishing processing → surface preparation → plasma spraying Ni-Al alloy coating 2 → plasma spraying ceramic coat before blanking → roughing → heat treatment → spray.
By ceramic coating 3, the surface hardness of plunger can be improved on the one hand, namely improve the wear resistance of plunger, the surface roughness of plunger can be reduced on the other hand, namely improve the corrosion resistance of plunger, thus extend the working life of plunger; Plunger matrix 1 and the combination force of ceramic coating 3 can be improved by Ni-Al alloy coating 2, improve in conjunction with mechanical strength, ensure the comprehensive mechanical performance of plunger.
Wherein:
The thickness of Ni-Al alloy coating 2 is 0.1mm, makes plunger matrix 1 improve raising 10% ~ 15% with the bonding strength of ceramic coating 3, reaches more than 75MPa, ensure the comprehensive mechanical performance of plunger.
Ceramic coating 3 adopts P7412 ceramic coating, SiO in this ceramic coating
2content 5%, Cr
2o
3content 92%, TiO
2content 3%, can make the surface hardness > HRc70 of plunger by this ceramic coating 3, surface roughness is Ra0.2 ~ Ra0.4, improves wear resistance, corrosion resistance.The thickness of P7412 ceramic coating 3 preferably 0.2 ~ 0.3mm in the utility model.
Claims (1)
1. a high efficient, high pressure plunger pump high abrasion plunger, comprises plunger matrix (1), it is characterized in that: plunger matrix (1) outer surface sprays Ni-Al alloy coating (2), ceramic coating (3) successively; Described ceramic coating (3) adopts P7412 ceramic coating; The thickness of described Ni-Al alloy coating (2) is 0.1mm; The thickness of described P7412 ceramic coating is 0.2 ~ 0.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135834.9U CN204113632U (en) | 2014-03-24 | 2014-03-24 | High efficient, high pressure plunger pump high abrasion plunger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135834.9U CN204113632U (en) | 2014-03-24 | 2014-03-24 | High efficient, high pressure plunger pump high abrasion plunger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204113632U true CN204113632U (en) | 2015-01-21 |
Family
ID=52330948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420135834.9U Expired - Fee Related CN204113632U (en) | 2014-03-24 | 2014-03-24 | High efficient, high pressure plunger pump high abrasion plunger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204113632U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253080A (en) * | 2017-07-12 | 2019-01-22 | 上海宝钢工业技术服务有限公司 | Long-life composite coating plunger for plunger pump |
-
2014
- 2014-03-24 CN CN201420135834.9U patent/CN204113632U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253080A (en) * | 2017-07-12 | 2019-01-22 | 上海宝钢工业技术服务有限公司 | Long-life composite coating plunger for plunger pump |
| CN109253080B (en) * | 2017-07-12 | 2021-11-02 | 上海宝钢工业技术服务有限公司 | Long-life composite coating plunger for plunger pump |
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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: 20150121 Termination date: 20180324 |