CN204113617U - Three-cylinder plunger pump high abrasion eccentric wheel - Google Patents
Three-cylinder plunger pump high abrasion eccentric wheel Download PDFInfo
- Publication number
- CN204113617U CN204113617U CN201420135019.2U CN201420135019U CN204113617U CN 204113617 U CN204113617 U CN 204113617U CN 201420135019 U CN201420135019 U CN 201420135019U CN 204113617 U CN204113617 U CN 204113617U
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- Prior art keywords
- eccentric wheel
- eccentric
- ceramic coating
- plunger pump
- high abrasion
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- Expired - Fee Related
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- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model belongs to petroleum machinery apparatus field, is specifically related to a kind of three-cylinder plunger pump high abrasion eccentric wheel, comprises eccentric wheel matrix, it is characterized in that: eccentric wheel outer surface of matrix sprays Ni-Al alloy coating, ceramic coating successively.This three-cylinder plunger pump is reasonable with high abrasion eccentric wheel structure, can improve eccentric wheel wear resistance and corrosion resistance, thus extend eccentric working life by ceramic coating; The combination force of eccentric wheel matrix and ceramic coating can be improved by Ni-Al alloy coating, improve in conjunction with mechanical strength, ensure eccentric comprehensive mechanical performance.
Description
Technical field
The utility model relates to a kind of three-cylinder plunger pump high abrasion eccentric wheel, belongs to petroleum machinery apparatus field.
Background technique
Three-cylinder plunger pump is the key equipment that oil field is gathered for oil gas well cementing operation, pickling and note, there is working pressure higher (general work pressure is 20MPa ~ 70MPa), 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.Wherein, power end bent axle is composite structure, primarily of compositions such as power end axle, eccentric wheel, bearing and spacer rings, equipment operationally, eccentric wheel forms friction pair by aluminum tile to be carried out drive link and realizes plunger and move reciprocatingly, wherein aluminum tile belongs to easily damaged parts, but assembled crankshaft is because difficulty of processing is large, the cycle long, it is high to be worth, generally in production and using process, need the major diameter fit mask of eccentric wheel and aluminum tile to have higher hardness and high wear resistance, require that eccentric wheel body material has excellent toughness and comprehensive mechanical intensity simultaneously.
At present, in eccentric wheel manufacture process, generally ensure designing requirement by carrying out nitriding treatment at 38CrMoAl substrate outer surface, but there is following problem:
(1) eccentric wheel is when nitriding treatment, needs other positions of external surfaces nitrided treatment sites all to do conservation treatment, and workload is large, bothersome effort;
(2) eccentric wheel outer surface hardness and case depth are not easy to control;
(3) after eccentric wheel nitrogenize heat treatment, if its working life will be affected when hardened layer is thin, part rejection will be caused if easily cracked during sclerosis thickness.
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, three-cylinder plunger pump high abrasion eccentric wheel that can ensure comprehensive mechanical performance and surface abrasion resistance, increase the service life.
Three-cylinder plunger pump high abrasion eccentric wheel described in the utility model, comprise eccentric wheel matrix, eccentric wheel outer surface of matrix sprays Ni-Al alloy coating, ceramic coating successively.
By ceramic coating, eccentric surface hardness can be improved on the one hand, namely improve eccentric wear resistance, eccentric surface roughness can be reduced on the other hand, namely improve eccentric corrosion resistance, thus extend eccentric working life; The combination force of eccentric wheel matrix and ceramic coating can be improved by Ni-Al alloy coating, improve in conjunction with mechanical strength, ensure eccentric comprehensive mechanical performance.
Wherein:
The thickness of Ni-Al alloy coating is 0.1mm, makes the bonding strength of eccentric wheel matrix and ceramic coating improve raising 10% ~ 15%, reaches more than 75MPa, ensure eccentric comprehensive mechanical performance.
Ceramic coating adopts P7412 ceramic coating, SiO in this ceramic coating
2content 5%, Cr
2o
3content 92%, TiO
2content 3%, can make eccentric surface hardness > HRc70 by this ceramic coating, and surface roughness is Ra0.2 ~ Ra0.4, improves wear resistance, corrosion resistance.The thickness of P7412 ceramic coating preferably 0.1 ~ 0.2mm in the utility model.
The beneficial effect that the utility model is compared with prior art had is:
This three-cylinder plunger pump is reasonable with high abrasion eccentric wheel structure, can improve eccentric wheel wear resistance and corrosion resistance, thus extend eccentric working life by ceramic coating; The combination force of eccentric wheel matrix and ceramic coating can be improved by Ni-Al alloy coating, improve in conjunction with mechanical strength, ensure eccentric comprehensive mechanical performance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the A-A sectional drawing of Fig. 1.
In figure: 1, eccentric wheel 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, 2, this three-cylinder plunger pump high abrasion eccentric wheel comprises eccentric wheel matrix 1, and eccentric wheel matrix 1 outer surface sprays Ni-Al alloy coating 2, ceramic coating 3 successively.
This eccentric preparation process 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 forging stock → roughing → heat treatment → spray.
By ceramic coating 3, eccentric surface hardness can be improved on the one hand, namely improve eccentric wear resistance, eccentric surface roughness can be reduced on the other hand, namely improve eccentric corrosion resistance, thus extend eccentric working life; Eccentric wheel 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 eccentric comprehensive mechanical performance.
Wherein:
The thickness of Ni-Al alloy coating 2 is 0.1mm, makes eccentric wheel matrix 1 improve raising 10% ~ 15% with the bonding strength of ceramic coating 3, reaches more than 75MPa, ensure eccentric comprehensive mechanical performance.
Ceramic coating 3 adopts P7412 ceramic coating, SiO in this ceramic coating
2content 5%, Cr
2o
3content 92%, TiO
2content 3%, can make eccentric surface hardness > HRc70 by this ceramic coating, and surface roughness is Ra0.2 ~ Ra0.4, improves wear resistance, corrosion resistance.The thickness of P7412 ceramic coating 3 preferably 0.1 ~ 0.2mm in the utility model.
Claims (1)
1. a three-cylinder plunger pump high abrasion eccentric wheel, comprises eccentric wheel matrix (1), it is characterized in that: eccentric wheel 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 0.1 ~ 0.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135019.2U CN204113617U (en) | 2014-03-24 | 2014-03-24 | Three-cylinder plunger pump high abrasion eccentric wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135019.2U CN204113617U (en) | 2014-03-24 | 2014-03-24 | Three-cylinder plunger pump high abrasion eccentric wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204113617U true CN204113617U (en) | 2015-01-21 |
Family
ID=52330933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420135019.2U Expired - Fee Related CN204113617U (en) | 2014-03-24 | 2014-03-24 | Three-cylinder plunger pump high abrasion eccentric wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204113617U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106756993A (en) * | 2016-12-01 | 2017-05-31 | 广州市泓智机械有限公司 | A kind of metalwork composite ceramic material coating formula and its production technology |
-
2014
- 2014-03-24 CN CN201420135019.2U patent/CN204113617U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106756993A (en) * | 2016-12-01 | 2017-05-31 | 广州市泓智机械有限公司 | A kind of metalwork composite ceramic material coating formula and its production technology |
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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 |