CN1161259A - Method for mfg. double metal plunger cylinder made of steel-copper and lead alloy - Google Patents
Method for mfg. double metal plunger cylinder made of steel-copper and lead alloy Download PDFInfo
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- CN1161259A CN1161259A CN 97100159 CN97100159A CN1161259A CN 1161259 A CN1161259 A CN 1161259A CN 97100159 CN97100159 CN 97100159 CN 97100159 A CN97100159 A CN 97100159A CN 1161259 A CN1161259 A CN 1161259A
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Abstract
In the invented method steel is used as matrix, and the Cu-Pb alloy powder is pressed into low density layer on the plunger hole portion and oil distribution surface, the relative density is 70-75%. In the hydrogen atmosphere and under 750-850 deg.C, it is sintered for 60-90 min. to make Cu-Pb alloy layer firmly bind on the steel matrix plunger hole wall and the oil distribution surface. Then the axle is used to conduct two times of extrusion to the tubular Cu-Pb alloy layer of the hole portion and the pressure of 600-700 MPa is used to conduct repressurization on the Cu-Pb alloy layer of the oil distribution surface to make the relative density of the sintered Cu-Pb alloy layer to 90% odd. The bimetallic plunger cylinder made by said method features high binding strength and excellent anti-friction and wearing property.
Description
The invention belongs to bimetallic plunger cylinder field.
The bimetallic plunger cylinder is the vitals of high-pressure plunger pump.It than QA19-4 the bronze and integrally-built cylinder body of silicomanganese brass can save Cu alloy material significantly.
The method that various manufacturing bimetallic plunger cylinders are arranged is for example watered methods such as casting copper alloys, damascene copper alloy cover, spraying copper alloy.But water casting copper alloys and easily produce plumbous segregation, chemical composition is changed, reduce wearability.Because the casting alloy cooling is inhomogeneous with contraction, will produce stress in the alloy-layer, thereby cause producing micro-crack; And stock utilization is low, because the percent defective height that sand holes, pore cause.Damascene copper alloy cover because bimetallic is a mechanical bond, is easily pulled out the copper alloy cover in the use, enters whole system after the fragmentation and will cause the pump housing to damage.The spraying copper alloy not only easily makes the low-melting-point metal volatilization, cause chemical composition change, and bimetallic is difficult for bonding together.
The clear 58-24483 of Japan Patent has introduced a kind of manufacture method of cylinder body, makes iron base sintered body earlier, and composition is Fe-1.5Cu-0.8C, and density is 6.5G/Cm
3, ooze copper with usual method then, under 570 ℃ of the whats, tufftride is 1 hour in the potassium cyanide salt bath again, and the surface generates the thick nitrided iron of 0.2mm.Also there is directly the method for carrying out nitrogen treatment make plunger cylinder with steel.With the bimetallic plunger cylinder ratio that contains copper alloy layer, nitrated steel poor in processability, processing cost height, and do not possess good antifriction quality in copper alloy soft metal and the easy advantage that absorbs well cuts.
Adopt powder metallurgy process to make steel one Pot metal bimetallic cylinder body, lead is evenly distributed, and physical and mechanical properties is good, and wearability improves.Key be how that antifriction quality is good Pot metal material securely sintering on steel matrix working face (plunger hole and join pasta).When Pot metal lamination system density was too high, the lead metal melting dilation of sintering process free state did not have enough holes to hold lead, and lead will be separated out from the Pot metal layer, is distributed on the bimetallic interface, influences the sinter bonded of Pot metal and steel matrix.Even cooling back lead can be bonded on the steel matrix, also owing to its low bimetallic that makes of mechanical strength in conjunction with intensity difference, the Pot metal layer very easily comes off in the use.
The object of the present invention is to provide a kind of manufacture method of steel one sintered copper metal bimetallic plunger cylinder, this method not only makes the bond strength height of Pot metal layer and steel matrix, and makes the bimetallic plunger cylinder have excellent antifriction quality and wearability.
Based on the foregoing invention purpose, manufacture method of the present invention is: be matrix with the steel, plunger hole portion in steel matrix suppresses low-density Pot metal layer with joining on the pasta with the Pot metal powder earlier, pressing pressure is 400～500Mpa, the relative density that makes the Pot metal layer is 70～75%, again in hydrogen atmosphere, 750～850 ℃ of following sintering of temperature 60～90 minutes, with plug hole portion tubulose Pot metal layer is carried out twice reaming extruding then, the Pot metal layer carries out multiple pressure with 600～700MPa pressure on the pasta to joining, make relative density＞90% of Pot metal layer, promptly make steel-Pot metal layer plunger cylinder through follow-up machining.
Manufacture method of the present invention, at first in steel matrix plunger hole portion with join moulding low-density Pot metal layer on the pasta, during sintering owing to there is certain hole, the lead of melting dilation in the time of can holding sintering, avoid plumbous separating out at the bimetallic interface, make that the Pot metal layer can sintering be together securely with steel matrix, the relative density of Pot metal lamination system is controlled at 70～75%, be because surpass 75%, the lead of Pot metal layer is easily separated out on the bimetallic interface during sintering, the sinter bonded of overslaugh Pot metal layer and steel matrix reduces bimetallic greatly in conjunction with intensity.Be lower than 70%, be unfavorable for improving the final densities of Pot metal layer, physical and mechanical properties is reduced.
Compared with prior art, the invention has the advantages that:, have excellent antifriction quality and wearability with the bimetallic plunger cylinder that the inventive method is made, Pot metal layer and steel matrix bond strength height.
Embodiment
Adopt atomization to prepare the Pot metal powder, its composition (percentage by weight) is Pb13-17, Sn4～6, and Ni1～2, Zn≤3, all the other are Cu.Sneak into 0.5% zinc stearate, on batch mixer, mixed 1 hour.Adopt mould compacting tubulose copper alloy layer, pressing pressure 400MPa, forming height 80mm divides 4 shapings, shaping relative density 70%.Sintering is 60 minutes in 800 ℃ of following hydrogen, carries out twice reaming extruding with plug then, and the relative density of final tubulose Pot metal layer is 92%, hardness HB77, hot strength 183N/mm
2, bimetallic shear strength＞126N/mm
2, promptly at 126N/mm
2Under the shearing force, the Pot metal layer is cut, but bimetallic does not separate in conjunction with part.Its metallographic structure such as Fig. 1.White is copper αGu Rongti tissue among Fig. 1, and black is lead, zinc etc.As shown in Figure 1, the plumbous distribution in Pot metal is uniform.Bimetallic is in conjunction with state such as Fig. 2.
Present embodiment adopts 107 plunger cylinders, and it is concave spherical surface that cylinder body is joined pasta.Adopt the principle of the invention, join the Pot metal powder of pasta with the deposited one deck mentioned component of special device cloth in steel matrix earlier, after the compacting of 400MPa pressure, sintering is 60 minutes in 800 ℃ of following hydrogen, presses again with 600MPa pressure again, makes bimetallic and joins pasta.
The bimetallic cylinder body that said method is made is wherein joined pasta and is finish grinded through following process, and plunger hole has carried out right boring, obtains conforming with the finished product of dimension precision requirement.This bimetallic plunger cylinder has been carried out continuously fully loaded and impact test on GY-A8V107 double pump driven shaft.Experimental condition is outlet rated pressure 32MPa, the highest 40MPa (instantaneous), theoretical maximum discharge capacity 2 * 107ml/r, rated revolution 2150r/min, No. 40 low hydraulic oil that coagulate of work fluid, oil liquid temperature-20～80 ℃, input power 100KW.Continuous fully loaded 114 hours of warp and dynamic impulsion 42 hours totally 15000 times, 153 hours bench test of accumulative total, the bimetallic firm binding force, sintered copper metal layer does not have obscission, it is normal to join pasta Pot metal sinter layer friction pattern, wear extent is atomic, and the surface is even lead, presents plumbous some fusing under high-speed friction and the solid lubrication rete of appearance.With the casting Pot metal cylinder body of its test run simultaneously, it joins pasta Pot metal layer serious wear, dented 1.0mm, and peel off, matrix and Pot metal layer all have severe crack.Result of the test shows that the bimetallic plunger cylinder that makes with the inventive method has excellent physical and mechanical performance and serviceability.
Claims (1)
1, the manufacture method of a kind of steel-Pot metal bimetallic plunger cylinder, it is characterized in that: this bimetallic cylinder body is matrix with the steel, suppress low-density Pot metal layer with joining on the pasta with the Pot metal powder in steel matrix plunger hole portion earlier, pressing pressure is 400～500MPa, the relative density that makes the Pot metal layer is 70～75%, again in hydrogen atmosphere, under 750～850 ℃ of the temperature, sintering 60～90 minutes, with plug hole portion tubulose Pot metal layer is carried out twice reaming extruding then, the Pot metal layer carries out multiple pressure with 600～700Mpa pressure on the pasta to joining, make relative density＞90% of Pot metal layer, promptly make steel one Pot metal layer bimetallic plunger cylinder through follow-up machining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97100159A CN1057244C (en) | 1997-01-14 | 1997-01-14 | Method for mfg. double metal plunger cylinder made of steel-copper and lead alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97100159A CN1057244C (en) | 1997-01-14 | 1997-01-14 | Method for mfg. double metal plunger cylinder made of steel-copper and lead alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1161259A true CN1161259A (en) | 1997-10-08 |
| CN1057244C CN1057244C (en) | 2000-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97100159A Expired - Fee Related CN1057244C (en) | 1997-01-14 | 1997-01-14 | Method for mfg. double metal plunger cylinder made of steel-copper and lead alloy |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1108211C (en) * | 2000-09-14 | 2003-05-14 | 四川大学 | Cam shaft of iron-base surface composite material and its manufacture |
| CN1296161C (en) * | 2004-09-23 | 2007-01-24 | 沈阳子午线轮胎模具有限公司 | Self-lubricating friction reducing board with single-face and multi-face |
| CN101966586A (en) * | 2010-10-27 | 2011-02-09 | 河南科技大学 | Piston blank manufacturing method of internal combustion engine |
| CN103231063A (en) * | 2013-04-27 | 2013-08-07 | 沈阳思莱德模具有限公司 | Long-service-life multi-face self-lubricating antifriction plate and manufacture method thereof |
| CN103527468A (en) * | 2013-09-16 | 2014-01-22 | 中航力源液压股份有限公司 | Duplex metal cylinder body applicable to hydraulic pump or motor |
| CN104481797A (en) * | 2014-11-29 | 2015-04-01 | 南京萨伯工业设计研究院有限公司 | Hydraulic motor cylinder body oil distributing disc assembly and processing method thereof |
| CN104500387A (en) * | 2015-01-05 | 2015-04-08 | 贵州鼎成熔鑫科技有限公司 | Plunger pump cylinder structure for compositing copper alloy and compositing method thereof |
| CN105014068A (en) * | 2015-08-06 | 2015-11-04 | 潘桂枝 | Preparing method for thermometal composite material |
| CN111101168A (en) * | 2018-09-17 | 2020-05-05 | 田振奎 | Self-lubricating solid soft metal silver-lead alloy coating structure |
| CN117102726A (en) * | 2023-10-25 | 2023-11-24 | 苏州莱特希普液压科技有限公司 | Preparation method of composite oil distribution disc for casting lead-tin bronze on steel surface |
| CN117182081A (en) * | 2023-05-06 | 2023-12-08 | 江西省科学院应用物理研究所 | High-pressure plunger pump cylinder body and preparation method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4002472A (en) * | 1975-05-01 | 1977-01-11 | Federal-Mogul Corporation | Process for making composite bearing material |
| JPS5794501A (en) * | 1981-09-28 | 1982-06-12 | Taiho Kogyo Co Ltd | Sliding material and its manufacture |
| JPS6439307A (en) * | 1987-08-04 | 1989-02-09 | Nippon Dia Clevite Co | Copper base sliding bearing material |
| CN1021206C (en) * | 1990-05-22 | 1993-06-16 | 杨洋 | Technique for iron-based and iron-copper bi-metal products |
| JP2769421B2 (en) * | 1993-05-13 | 1998-06-25 | 大同メタル工業株式会社 | Copper-lead bearing alloy material excellent in corrosion resistance and method for producing the same |
-
1997
- 1997-01-14 CN CN97100159A patent/CN1057244C/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1108211C (en) * | 2000-09-14 | 2003-05-14 | 四川大学 | Cam shaft of iron-base surface composite material and its manufacture |
| CN1296161C (en) * | 2004-09-23 | 2007-01-24 | 沈阳子午线轮胎模具有限公司 | Self-lubricating friction reducing board with single-face and multi-face |
| CN101966586A (en) * | 2010-10-27 | 2011-02-09 | 河南科技大学 | Piston blank manufacturing method of internal combustion engine |
| CN103231063A (en) * | 2013-04-27 | 2013-08-07 | 沈阳思莱德模具有限公司 | Long-service-life multi-face self-lubricating antifriction plate and manufacture method thereof |
| CN103527468A (en) * | 2013-09-16 | 2014-01-22 | 中航力源液压股份有限公司 | Duplex metal cylinder body applicable to hydraulic pump or motor |
| CN104481797B (en) * | 2014-11-29 | 2017-02-22 | 南京萨伯工业设计研究院有限公司 | Hydraulic motor cylinder body oil distributing disc assembly and processing method thereof |
| CN104481797A (en) * | 2014-11-29 | 2015-04-01 | 南京萨伯工业设计研究院有限公司 | Hydraulic motor cylinder body oil distributing disc assembly and processing method thereof |
| CN104500387A (en) * | 2015-01-05 | 2015-04-08 | 贵州鼎成熔鑫科技有限公司 | Plunger pump cylinder structure for compositing copper alloy and compositing method thereof |
| CN105014068A (en) * | 2015-08-06 | 2015-11-04 | 潘桂枝 | Preparing method for thermometal composite material |
| CN111101168A (en) * | 2018-09-17 | 2020-05-05 | 田振奎 | Self-lubricating solid soft metal silver-lead alloy coating structure |
| CN117182081A (en) * | 2023-05-06 | 2023-12-08 | 江西省科学院应用物理研究所 | High-pressure plunger pump cylinder body and preparation method thereof |
| CN117182081B (en) * | 2023-05-06 | 2024-02-13 | 江西省科学院应用物理研究所 | High-pressure plunger pump cylinder body and preparation method thereof |
| CN117102726A (en) * | 2023-10-25 | 2023-11-24 | 苏州莱特希普液压科技有限公司 | Preparation method of composite oil distribution disc for casting lead-tin bronze on steel surface |
| CN117102726B (en) * | 2023-10-25 | 2024-02-02 | 苏州莱特希普液压科技有限公司 | Preparation method of composite oil distribution disc for casting lead-tin bronze on steel surface |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1057244C (en) | 2000-10-11 |
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