CN105234546A - Machining method for high pressure fuel oil plunger pump slide rail and welding fixture - Google Patents
Machining method for high pressure fuel oil plunger pump slide rail and welding fixture Download PDFInfo
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- CN105234546A CN105234546A CN201510178597.3A CN201510178597A CN105234546A CN 105234546 A CN105234546 A CN 105234546A CN 201510178597 A CN201510178597 A CN 201510178597A CN 105234546 A CN105234546 A CN 105234546A
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- matrix
- slide rail
- fixture
- nonlubricated bearing
- high pressure
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Abstract
The invention provides a machining method for a high pressure fuel oil plunger pump slide rail and a welding fixture. According to the machining method, a self-lubricating bearing is connected with a base material by the adoption of a welding method, so that the bonding strength is ensured, and falling off and failure are not liable to happen in a bad working condition. An electron beam welding process is adopted for welding, so that the connection strength is ensured, and meanwhile heat input is reduced to the maximum limit, and the problems of deformation of a part and the failure of a coating due to heating are prevented. The structural strength of the slide rail is achieved, and meanwhile the lubricating effect is improved, and the service life is prolonged.
Description
Technical field
The present invention is a kind of processing method and weld jig of high pressure fuel plunger displacement pump slide rail, belongs to high pressure fuel plunger displacement pump processing and manufacturing technical field.
Background technology
Aero-engine high pressure fuel pump is the variable diacytic type of a kind of flow axially (sloped plunger) plunger displacement pump, for in engine tail nozzle control system, export the fuel oil of suitable pressure and flow according to power required in the duty of engine and spout hydraulic actuator piston.Plunger displacement pump realizes the control of fuel pressure and flow by inner swash plate angle adjustment.Slide rail coordinates with slide rail body, for adjusting swash plate angle.
Slide rail bears pressure, and on slide rail, extra coarse degree is generally about Ra0.2, and rubs with slide rail body, needs higher anti-wear performance.
The pressure born due to slide rail is larger, be difficult to adopt the manufacture of the conventional lubrication such as graphite, copper alloy material, be generally need to adopt structural steel as matrix material according to structure and stressing conditions, then after the stressed friction surface phosphatization bottoming of matrix, spray self-lubricating coat in use after graphite spraying lubricant coating or blast.But above-mentioned coating is when operating mode is more severe, often can produce coating shedding, rub resistance is deteriorated, and reduces the life-span of slide rail.
Summary of the invention
The present invention designs for the shortcoming existed in above-mentioned prior art the processing method and weld jig that provide a kind of high pressure fuel plunger displacement pump slide rail just, its objective is and adhere to one deck peel, coefficient of friction is little, wearability is good self-lubricating coat in use at the force-bearing surfaces of slide rail matrix, the load that slide rail body is larger can be born.
The object of the invention is to be achieved through the following technical solutions:
The invention provides a kind of processing method of high pressure fuel plunger displacement pump slide rail, it is characterized in that: the step of the method is:
(1) adopt the matrix (1) of stainless steel processing annular or arc-shaped slide rail, paste Nonlubricated bearing (2) at the inner ring surface of matrix (1), the thickness of this Nonlubricated bearing (2) is 0.5 ~ 3.5mm;
The both sides of the edge of matrix (1) and Nonlubricated bearing (2) are all processed with weld seam technique chamfering (6), and the angle of weld seam technique chamfering (6) is 30 ~ 45 °, remaining wide be 0.3 ~ 0.5mm;
(2) with fixture, matrix (1) and Nonlubricated bearing (2) are clamped, the edge of the Nonlubricated bearing (2) of matrix (1) both sides and matrix (1) are connected together by electron beam welding, welding parameter: welding line: 4.0 ~ 5.0mA, linear velocity: 350 ~ 450mm/min.
Technical solution of the present invention additionally provides a kind of fixture of the processing method for above-mentioned high pressure fuel plunger displacement pump slide rail, it is characterized in that: this fixture comprises one and adopts steel material processing and the annular of matrix (1) or the fixture outer shroud (3) of arc, the matrix (1) being covered with Nonlubricated bearing (2) is fixed on the inner surface of fixture outer shroud (3), to fit on the surface one at Nonlubricated bearing (2) and adopt red copper materials processing, the fastening radiating block (4) matched with Nonlubricated bearing (2) surface configuration, fastening radiating block (4) to be fixedly connected with fixture outer shroud (3) by bolt (5) and to fit tightly on the inner surface of fixture outer shroud (3) by the matrix (1) being covered with Nonlubricated bearing (2).
It is 60 ~ 90 ° fan-shaped that fastening radiating block (4) is designed to central angle, and fastening radiating block (4) is greater than 6mm along the thickness that fixture outer shroud (3) is radial.
The advantage of technical solution of the present invention is:
The present invention becomes and is inlaid in matrix material by self-lubricating coat in use, ensure that its bond strength, under bad working environments, is also not easy to the inefficacy that comes off; Steel matrix and Nonlubricated bearing adopt electro-beam welding process, while guarantee bonding strength, decreasing heat input to greatest extent, preventing the appearance of part deformation and the coating Problem of Failure because being heated; While meeting rail structure intensity, improve lubricant effect and extend service life.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of welding procedure in the inventive method
Fig. 2 is the structural representation of the fixture for the inventive method
Fig. 3 is the structural representation of the slide rail adopting the present invention program's processing
Detailed description of the invention
Shown in accompanying drawing 1 ~ 3, the high pressure fuel plunger displacement pump slide rail of the embodiment of the present invention is arc, and central angle is 77.5 °, and radius 43.5 is wide by 20, thinnest part 5.9.This slide rail requires that forward bears 17000N pressure, coating extra coarse degree Ra0.2, works after 600 hours, and working surface must not inordinate wear; Environment temperature :-40 DEG C ~+120 DEG C (allow+200 DEG C in short-term, in 1h, continuous working period is no more than 3min); Working media: 3
#jet fuel (GB6537-2006); Working depth: 18000m.
Adopt technical solution of the present invention process the processing method of this kind of high pressure fuel plunger displacement pump slide rail step be:
(1) adopt the matrix (1) of 18CrNi4WA materials processing arc-shaped slide rail, paste Nonlubricated bearing (2) at the inner ring surface of matrix (1), the processing technology of this Nonlubricated bearing (2) is: 10
#copper electroplating layer on the matrix of carbon steel sheet also sinters layers of copper, and then adopt and embed layers of copper technique coating self-lubricating coat in use, this self-lubricating coat in use is PTFE+MoS2, and Nonlubricated bearing (2) can play the wear-resisting lubrication of expection, and thickness is 1.5mm;
The both sides of the edge of matrix (1) and Nonlubricated bearing (2) are all processed with weld seam technique chamfering (6), and the angle of weld seam technique chamfering (6) is 45 °, remaining wide be 0.4mm;
(2) with fixture, matrix (1) and Nonlubricated bearing (2) are clamped, the edge of the Nonlubricated bearing (2) of matrix (1) both sides and matrix (1) are connected together by electron beam welding, welding parameter: welding line: 4.5mA, linear velocity: 400mm/min.
Above-mentioned fixture comprises one and adopts steel material processing and the annular of matrix (1) or the fixture outer shroud (3) of arc, the matrix (1) being covered with Nonlubricated bearing (2) is fixed on the inner surface of fixture outer shroud (3), to fit on the surface one at Nonlubricated bearing (2) and adopt red copper materials processing, the fastening radiating block (4) matched with Nonlubricated bearing (2) surface configuration, fastening radiating block (4) to be fixedly connected with fixture outer shroud (3) by bolt (5) and to fit tightly on the inner surface of fixture outer shroud (3) by the matrix (1) being covered with Nonlubricated bearing (2).Welding procedure structure adopts circular weld integral solder, can process 4 parts at every turn;
It is 90 ° fan-shaped that fastening radiating block (4) is designed to central angle, and the radius of fastening radiating block (4) is 42mm.
Carry out observing and checking after the long examination of installation 450H test, adopt the self-lubricating coat in use on the slide rail of present invention process processing that obscission does not occur, size does not have significant change, dependable performance, long service life.
Claims (3)
1. a processing method for high pressure fuel plunger displacement pump slide rail, is characterized in that: the step of the method is:
(1) adopt the matrix (1) of stainless steel processing annular or arc-shaped slide rail, paste Nonlubricated bearing (2) at the inner ring surface of matrix (1), the thickness of this Nonlubricated bearing (2) is 0.5 ~ 3.5mm;
The both sides of the edge of matrix (1) and Nonlubricated bearing (2) are all processed with weld seam technique chamfering (6), and the angle of weld seam technique chamfering (6) is 30 ~ 45 °, remaining wide be 0.3 ~ 0.5mm;
(2) with fixture, matrix (1) and Nonlubricated bearing (2) are clamped, the edge of the Nonlubricated bearing (2) of matrix (1) both sides and matrix (1) are connected together by electron beam welding, welding parameter: welding line: 4.0 ~ 5.0mA, linear velocity: 350 ~ 450mm/min.
2. for the fixture of the processing method of high pressure fuel plunger displacement pump slide rail described in the claims 1,
It is characterized in that: this fixture comprises one and adopts steel material processing and the annular of matrix (1) or the fixture outer shroud (3) of arc, the matrix (1) being covered with Nonlubricated bearing (2) is fixed on the inner surface of fixture outer shroud (3), to fit on the surface one at Nonlubricated bearing (2) and adopt red copper materials processing, the fastening radiating block (4) matched with Nonlubricated bearing (2) surface configuration, fastening radiating block (4) to be fixedly connected with fixture outer shroud (3) by bolt (5) and to fit tightly on the inner surface of fixture outer shroud (3) by the matrix (1) being covered with Nonlubricated bearing (2).
3. the fixture of the processing method of high pressure fuel plunger displacement pump slide rail according to claim 2,
It is characterized in that: it is 60 ~ 90 ° fan-shaped that fastening radiating block (4) is designed to central angle, fastening radiating block (4) is greater than 6mm along the thickness that fixture outer shroud (3) is radial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510178597.3A CN105234546B (en) | 2015-04-15 | 2015-04-15 | Machining method and welding fixture for high-pressure fuel plunger pump slide rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510178597.3A CN105234546B (en) | 2015-04-15 | 2015-04-15 | Machining method and welding fixture for high-pressure fuel plunger pump slide rail |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105234546A true CN105234546A (en) | 2016-01-13 |
| CN105234546B CN105234546B (en) | 2020-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510178597.3A Expired - Fee Related CN105234546B (en) | 2015-04-15 | 2015-04-15 | Machining method and welding fixture for high-pressure fuel plunger pump slide rail |
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| Country | Link |
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| CN (1) | CN105234546B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110936085A (en) * | 2019-12-16 | 2020-03-31 | 湖北中油科昊机械制造有限公司 | Supporting tool used in welding process of power end of plunger pump |
| CN111805115A (en) * | 2020-07-27 | 2020-10-23 | 广东三扬机器人有限公司 | Welding device of axial flow fan |
| CN112008193A (en) * | 2020-09-04 | 2020-12-01 | 杨秉霖 | Automatic processing equipment for high-pressure fuel plunger pump slide rail |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5072092A (en) * | 1989-09-28 | 1991-12-10 | General Motors Corporation | Excimer laser treatment of engine bearing surfaces such as cylinders |
| CN201679661U (en) * | 2010-03-12 | 2010-12-22 | 北京华德液压工业集团有限责任公司 | Symmetrical static pressure-supported swinging disc plunger pump |
| CN102292562A (en) * | 2008-12-04 | 2011-12-21 | 约亨·科茨 | Compound steel bearings and methods of manufacturing |
| CN202768640U (en) * | 2012-09-12 | 2013-03-06 | 浙江双飞无油轴承股份有限公司 | Dispersedly-embedded self-lubricating bearing bush with thick wall |
-
2015
- 2015-04-15 CN CN201510178597.3A patent/CN105234546B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5072092A (en) * | 1989-09-28 | 1991-12-10 | General Motors Corporation | Excimer laser treatment of engine bearing surfaces such as cylinders |
| CN102292562A (en) * | 2008-12-04 | 2011-12-21 | 约亨·科茨 | Compound steel bearings and methods of manufacturing |
| CN201679661U (en) * | 2010-03-12 | 2010-12-22 | 北京华德液压工业集团有限责任公司 | Symmetrical static pressure-supported swinging disc plunger pump |
| CN202768640U (en) * | 2012-09-12 | 2013-03-06 | 浙江双飞无油轴承股份有限公司 | Dispersedly-embedded self-lubricating bearing bush with thick wall |
Non-Patent Citations (1)
| Title |
|---|
| 冯吉才等: "异种材料真空电子束焊接研究现状分析", 《焊接学报》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110936085A (en) * | 2019-12-16 | 2020-03-31 | 湖北中油科昊机械制造有限公司 | Supporting tool used in welding process of power end of plunger pump |
| CN111805115A (en) * | 2020-07-27 | 2020-10-23 | 广东三扬机器人有限公司 | Welding device of axial flow fan |
| CN111805115B (en) * | 2020-07-27 | 2022-06-14 | 广东三扬机器人有限公司 | Welding device of axial flow fan |
| CN112008193A (en) * | 2020-09-04 | 2020-12-01 | 杨秉霖 | Automatic processing equipment for high-pressure fuel plunger pump slide rail |
| CN112008193B (en) * | 2020-09-04 | 2022-02-18 | 江苏军源装备制造有限公司 | Automatic processing equipment for high-pressure fuel plunger pump slide rail |
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| Publication number | Publication date |
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| CN105234546B (en) | 2020-06-12 |
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Granted publication date: 20200612 Termination date: 20210415 |