CN103451469A - Copper alloy material for sliding bearings - Google Patents
Copper alloy material for sliding bearings Download PDFInfo
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- CN103451469A CN103451469A CN2013103499375A CN201310349937A CN103451469A CN 103451469 A CN103451469 A CN 103451469A CN 2013103499375 A CN2013103499375 A CN 2013103499375A CN 201310349937 A CN201310349937 A CN 201310349937A CN 103451469 A CN103451469 A CN 103451469A
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- sliding bearings
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Abstract
The invention discloses a copper alloy material for sliding bearings, which is characterized by comprising the following components in percentage by mass: 2.40-2.80wt% of Ni, 0.80-1.20wt% of Si, 2.0-2.50wt% of Mn, at most 0.2wt% of Fe, at most 0.1wt% of Sn, 0.30-0.70wt% of Co, 1.20-1.60wt% of Al, 55-59wt% of Cu and the balance of Zn. The copper alloy material disclosed by the invention has the advantages of high strength, wear resistance, favorable impact resistance, favorable processability, and is suitable for manufacturing sliding bearings of a reductor in a hydraulic motor.
Description
Technical field
The present invention relates to a kind of Cu alloy material, be applicable to manufacture the sliding surface bearing of the core part of oil motor as step-down gear, belong to the oil motor product scope.
Background technology
Sliding surface bearing is the vital part in oil motor, and the assembly structure of sliding surface bearing in step-down gear as shown in Figure 1, be located in sun and planet gear 1 by planet wheel spindle 3, between planet wheel spindle 3 and sun and planet gear 1, is provided with sliding surface bearing 2.In design, it is had to following requirement: the sliding contact surface of sliding surface bearing 2 must guarantee must be enough lubricated, can bear certain shock load, and will there is good wear resistance.The main drawback of the Cu alloy material of the existing sliding surface bearing for the manufacture of oil motor 2 is that intensity is lower, wear resistance is poor, ductility is bad, is difficult for processing, quality stability is not high.
Summary of the invention
The objective of the invention is to overcome above-mentioned shortcoming, a kind of high strength, wear-resisting, good impact resistance, the easy Cu alloy material that is suitable for manufacturing sliding surface bearing of processing are provided.
In order to reach above-mentioned requirements, the invention provides a kind of Cu alloy material, it is characterized in that, by Ni 2.40～2.80wt% by percentage to the quality, Si 0.80～1.20wt%, Mn 2.0～2.50wt%, Fe≤0.2wt%, Sn≤0.1wt%, Co 0.30～0.70wt%, Al 1.20～1.60wt%, Cu 55～59wt%, and the Zn of surplus makes.
The effect of each alloy element component that forms above-mentioned alloy material is as follows:
1, Si: add silicon as reductive agent and reductor in steelmaking process; Silicon can significantly improve the elastic limit of copper alloy, yield-point and tensile strength.
2, Mn: manganese well solid solution, in copper, produces solution strengthening, and in smelting process, manganese is good reductor and sweetening agent; In copper alloy, add 1% enough toughness not only to be arranged when above, and higher intensity and hardness are arranged, improve the hot workability of copper alloy; In copper alloy, the manganese amount increases, and weakens the resistance to corrosion of copper, reduces welding property; Manganese has deoxidation and desulfurization effect, therefore the forging and the plasticity-that add manganese can make Cu alloy material have in copper.
3, Ni: " the zinc equivalent coefficient " of nickel is negative value, thereby can obviously enlarge alpha phase zone, makes some high zinc-coppers still can obtain the high-strength alloy mutually less containing β (1) nickel and can improve the intensity of copper, and keep good plasticity and toughness.(2) nickel has higher corrosion resistance to soda acid, and antirust and temperature capacity is at high temperature arranged.
(3) nickel can reduce the brittle transition temperature of copper, can improve the low-temperature flexibility of copper.(4) can well bear cold and hot working.
4, Fe: iron solubleness in copper alloy is minimum, thereby iron-holder can not be too high, and Tie Tong often is free state and is distributed in copper alloy, and iron can be used as nucleus and crystal grain thinning, stops grain growth.
5, Sn: in copper, vital role is to suppress dezincify, improves solidity to corrosion.Zinc in copper increases in 38% α phase scope by 0, and the dissolving of tin is down to 0.7% by 15%.
6, Zn: can improve solidity to corrosion, intensity, cutting ability of copper alloy etc.
7, Al: the Main Function of aluminium is deoxidation and crystal grain thinning, improves wear resistance and the intensity of copper alloy.
In the Cu-Zn alloy, add a small amount of above-mentioned element and the polynary copper alloy that forms.Mainly by analyzing metallographic structure, " the zinc equivalent coefficient " of forming element.After adding certain element of 1% (weight percent), the variation of its metallographic structure is equivalent to increase or reduce the coefficient factor of how much zinc, is called " the zinc equivalent coefficient " of this element.
Cu alloy material provided by the invention has high strength, wear-resisting, good impact resistance, the easy advantage such as processing, is suitable for manufacturing the sliding surface bearing of step-down gear in oil motor.
The accompanying drawing explanation
Fig. 1 is the assembling schematic diagram of sliding surface bearing in step-down gear.
Embodiment
Can more specifically describe the present invention in conjunction with the following example.
A kind of sliding surface bearing Cu alloy material, by following raw material make (unit: mass percent, %):
Table 1
Its preparation method is: in order by silicon, 10mm * 10mm * 4mm following electrolytic copper, iron, cobalt, manganese, remaining bulk electrolytic copper, zinc, aluminium, nickel and tin (if foundry returns is arranged, between silicon and fritter electrolytic copper, add, all iron, manganese, nickel, electrolytic copper, tin and aluminium that directly adds aluminium alloy, enter stokehold and all need to put the fire door preheating) join in smelting furnace, the temperature of smelting furnace is 950 ℃, after melting 50s, be poured in mould, naturally cooling, obtain the copper alloy bar, for making sliding surface bearing 2 as shown in Figure 1.
Being first how rear few on blanking principle of temporal sequence of the present invention, take copper as main, is first electrolytic copper; Low after first high, what fusing point was high first adds, and adds after low-melting; Difficult at first and quite easy afterwards, difficult oxidation element first adds, and after easy oxidation, adds.At this, readjust in principle, specifically be divided into following 2 points: (1) takes full advantage of the solvency action of thaw process, and what foundry returns was arranged first adds foundry returns as far as possible; (2) take full advantage of the density variation of alloying element and aluminium alloy, the alloying element of high-density low melting point can finally add, and after adding, stirs and can reach uniform ingredients a little.The alloying element of high-melting-point high-density hyperoxia voltinism, preferably can directly join in low-density solution, and in this solution, dissolve on limit intensification, limit, until dissolved the alloying element of these infusibilities, then add other furnace charge.
Experiment show that the performance data of the Cu alloy material shown in embodiment 1～5 sees the following form:
Table 2
From table 2, the Cu alloy material that embodiment 1-5 makes is higher than existing ordinary copper alloy material elongation, solidity to corrosion is similar with existing common alloy material, frictional coefficient is low, tensile strength, Bu Shi intensity height are a lot, visible, Cu alloy material physical synthesis performance provided by the invention is than common alloy material excellence.
Claims (1)
1. a sliding surface bearing Cu alloy material, it is characterized in that, by Ni 2.40～2.80wt% by percentage to the quality, Si 0.80～1.20wt%, Mn 2.0～2.50wt%, Fe≤0.2wt%, Sn≤0.1wt%, Co 0.30～0.70wt%, Al 1.20～1.60wt%, Cu 55～59wt%, and the Zn of surplus makes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103499375A CN103451469A (en) | 2013-08-12 | 2013-08-12 | Copper alloy material for sliding bearings |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103499375A CN103451469A (en) | 2013-08-12 | 2013-08-12 | Copper alloy material for sliding bearings |
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| CN103451469A true CN103451469A (en) | 2013-12-18 |
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| CN2013103499375A Pending CN103451469A (en) | 2013-08-12 | 2013-08-12 | Copper alloy material for sliding bearings |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104862525A (en) * | 2015-06-09 | 2015-08-26 | 陈鹏 | Ball bearing |
| CN106636736A (en) * | 2016-12-19 | 2017-05-10 | 昆山哈利法塔金属有限公司 | Copper alloy material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09316570A (en) * | 1996-05-30 | 1997-12-09 | Chuetsu Gokin Chuko Kk | End bearing for one-way clutch and other sliding part |
| CN101287848A (en) * | 2005-04-04 | 2008-10-15 | 迪尔金属合作两合公司 | Use of a copper zinc alloy |
| CN102277515A (en) * | 2011-08-10 | 2011-12-14 | 龙工（上海）桥箱有限公司 | Copper alloy material |
-
2013
- 2013-08-12 CN CN2013103499375A patent/CN103451469A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09316570A (en) * | 1996-05-30 | 1997-12-09 | Chuetsu Gokin Chuko Kk | End bearing for one-way clutch and other sliding part |
| CN101287848A (en) * | 2005-04-04 | 2008-10-15 | 迪尔金属合作两合公司 | Use of a copper zinc alloy |
| CN102277515A (en) * | 2011-08-10 | 2011-12-14 | 龙工（上海）桥箱有限公司 | Copper alloy material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104862525A (en) * | 2015-06-09 | 2015-08-26 | 陈鹏 | Ball bearing |
| CN104862525B (en) * | 2015-06-09 | 2017-03-08 | 马国旭 | A kind of ball bearing |
| CN106636736A (en) * | 2016-12-19 | 2017-05-10 | 昆山哈利法塔金属有限公司 | Copper alloy material |
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Application publication date: 20131218 |