CN104943275A - Production technique for steel-base copper-plastic compound material - Google Patents
Production technique for steel-base copper-plastic compound material Download PDFInfo
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- CN104943275A CN104943275A CN201510356668.4A CN201510356668A CN104943275A CN 104943275 A CN104943275 A CN 104943275A CN 201510356668 A CN201510356668 A CN 201510356668A CN 104943275 A CN104943275 A CN 104943275A
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Abstract
The invention discloses a production technique for steel-base copper-plastic compound material. The production technique comprises the following steps of 1 blanking, 2 copper plating, 3 sintering and cooling, 4 colloid synthesis with compound teflon, 5 finish rolling, 6 stoving and cooling, 7 pressure sintering and 8 cooling. The protective gas is nitrogen-hydrogen mixed gas. When pressure sintering is conducted, the heating temperature ranges from 370 to 380 DEG C, and the pressure ranges from 40.0 to 50.0 MPa. The production technique for the steel-base copper-plastic compound material has the advantages that the quality and the stability of product are improved, and the combined strength is high.
Description
Technical field
The present invention relates to technical field of composite materials, be specifically related to the production technology of steel-base copper-plastic compound material.
Background technology
Steel-base copper-plastic compound material, mainly steel plate is matrix, high temperature sintering copper powder on steel plate, and copper powder has sintered and after cooling, then on copper powder again compound one deck polytetrafluoroethylene (PTFE) become powder, after carry out low-temperature sintering again.But in use, when the axle sleeve be made up of this composite uses, moment is little, and the life-span is short, and wall unevenness is even; .
Summary of the invention
The object of the invention is to the production technology providing a kind of steel-base copper-plastic compound material for the problems referred to above, its technological process is simple, produces Wear Resistance strong, can extend the materials'use life-span.
Technical problem to be solved by this invention realizes by the following technical solutions:
The production technology of steel-base copper-plastic compound material, it comprises the steps:
1) blanking: cut out steel plate and copper mesh by the size of regulation;
2) copper facing: surface of steel plate is carried out copper plating treatment;
3) sinter, cool: copper mesh is laid on steel plate, puts into the net belt type sintering furnace being connected with protective gas together, be combined with each other, sintering temperature is 950 DEG C, sintering time is 45 ~ 60 minutes, and the coolant jacket by certain length after sintering is lowered the temperature, and once comes out of the stove to 100 DEG C;
4) ptfe composite synthesis colloid: ptfe composite synthesis colloid in the copper mesh layers sintered, and be mixed into a kind of liquid high-abrasive material, finally obtain shaping sheet material;
5) finish rolling: use milling train to carry out finish rolling to sheet material;
6) dry, cool: use drying oven to dry sheet material, make polytetrafluoroethylene (PTFE) synthesize colloid and be solidificated in copper mesh gap;
7) pressure sintering: be down to after normal temperature until sheet material, is carried out pressure sintering;
8) cool: after 3 hours, be cooled to less than 100 DEG C, take out sample, naturally cool to room temperature and be namely processed into polytetrafluoroethylene (PTFE) steel-base copper-plastic compound material.
Described protective gas is nitrogen-hydrogen mixed gas.
During described pressure sintering, heating-up temperature is 370 ~ 380 DEG C, and pressure is 40.0 ~ 50.0MPa.
The invention has the beneficial effects as follows:
1) structure of the present invention is simple, uses copper mesh and steel plate compound, and at top layer compound one deck polytetrafluoroethylene (PTFE) synthesis colloid of copper mesh, combined strength bination can be made high, material good evenness, wall thickness deflection is little, and combined efficiency and quality get a promotion;
2) in the present invention, protective gas is nitrogen-hydrogen mixed gas, and hydrogen can prevent copper mesh layers and copper plate oxidation, can also reductive copper oxide;
3) with the addition of a kind of liquid high-abrasive material in the present invention and can improve the anti-wear performance of polytetrafluoroethylene (PTFE) synthesis colloid, resistance to burning colloidality energy and resistance to load-carrying properties.
Accompanying drawing explanation
Fig. 1 is present invention process flow chart.
Detailed description of the invention
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
As shown in Figure 1, the production technology of steel-base copper-plastic compound material, it comprises the steps:
1) blanking: cut out steel plate 1 and copper mesh 2 by the size of regulation;
2) copper facing: copper plating treatment is carried out on steel plate 1 surface;
3) sinter, cool: copper mesh 2 is laid on steel plate 1, puts into the net belt type sintering furnace being connected with protective gas together, be combined with each other, sintering temperature is 950 DEG C, sintering time is 45 ~ 60 minutes, and the coolant jacket by certain length after sintering is lowered the temperature, and once comes out of the stove to 100 DEG C;
4) ptfe composite synthesis colloid 3: ptfe composite synthesis colloid 3 on the copper mesh sintered 2 layers, and be mixed into a kind of liquid high-abrasive material, finally obtain shaping sheet material;
5) finish rolling: use milling train to carry out finish rolling to sheet material;
6) dry, cool: use drying oven to dry sheet material, make polytetrafluoroethylene (PTFE) synthesize colloid 3 and be solidificated in copper mesh 2 gap;
7) pressure sintering: be down to after normal temperature until sheet material, is carried out pressure sintering;
8) cool: after 3 hours, be cooled to less than 100 DEG C, take out sample, naturally cool to room temperature and be namely processed into polytetrafluoroethylene (PTFE) steel-base copper-plastic compound material.
Protective gas is nitrogen-hydrogen mixed gas.
During pressure sintering, heating-up temperature is 370 ~ 380 DEG C, and pressure is 40.0 ~ 50.0MPa.
Polytetrafluoroethylene (PTFE) synthesis colloid 3 is containing polytetrafluorethylepowder powder, crystal glass, lead powder, polytetrafluoroethylene (PTFE) synthetic emulsion, liquid high-abrasive material, be 2.7:1.5:2:1.25:4.5 by weight ratio, wherein polytetrafluoroethylene (PTFE) synthetic emulsion is that the ptfe emulsion of 70% and the graphite powder of 30% mix.
Liquid high-abrasive material, it contains the ammonia that weight ratio is 0.5% ~ 1%, the molybdenum bisuphide of 3.5% ~ 4.5%, the spheroidal graphite molecule of 2% ~ 3%, the nickel of 1% ~ 1.5%, and all the other are copper, and when wherein the content of molybdenum bisuphide is 4%, its combination property is best.
In the process of pressure sintering, when temperature is more than 180 DEG C, release of repeatedly pressurizeing, to be vented, is in fact equivalent to forge product, contributes to the homogeneity and the compactness that improve goods.Time more than temperature rise to fusing point, then be forced into certain pressure.When heating-up temperature is within the scope of 370 ~ 380 DEG C, when pressure is between 40.0 ~ 50.0 MPa, the comprehensive comparison of goods is good.This is because when processing temperature is lower than 370 DEG C, polytetrafluoroethylene (PTFE) does not also have to become molten condition by solid particle completely, and also there is obvious gap between pellet, do not combine together well, case hardness is lower.When processing temperature is 370 ~ 380 DEG C of scopes, material becomes complete melting, substantially becomes a uniform entirety, shows good case hardness.When processing temperature continues to be elevated to 390 DEG C, then material starts to decompose, and forms Small molecular.Therefore, the specimen surface hardness after compacting is also lower.
Within the specific limits, the case hardness of suppressing sample increases with the increase of tonnage.This is because after material melts, polytetrafluoroethylene (PTFE) becomes molten state by solid particle, good fluidity, under the effect of the pressure, can flow freely.Along with the increase of pressure, the material of melting is progressively compacted, and the surface of compacting sample increases gradually, is filled with the die cavity of mould gradually.When pressure is increased to certain value, the space of the storeroom of melting is fully densified, and its case hardness also no longer increases, and superficial hardness number tends towards stability.When pressure is between 40.0 ~ 50.0 MPa, its comprehensive comparison is good.
According to 3 Rotating fields features of steel-base copper-plastic compound material, in its process, the plastic layer adopting composite material surface corresponding to different processing technologys is different.The practical application performance of plastic layer in composite to product has a significant impact, and has showed the different combination properties of composite.The case hardness of composite increases with the reduction of plastic layer.There is the shortcomings such as hardness is low, wear rate is high, bearing capacity is poor in polytetrafluoroethylene (PTFE) self.Plastic layer is too thick, and in working order, composite has good frictional behaviour, but the polytetrafluoroethylene (PTFE) on top layer falls and worn away in large quantities, and the hardness of surface of the work is not enough; Do not have plastic layer, will be that copper mesh is outside exposed, its case hardness be close to the hardness of steel, but coefficient of friction is high; Plastic layer is too thin, when service wear is larger, when particularly being vibrated and clash into, will expose copper mesh layers, reduce the frictional behaviour of composite equally.Therefore determine the thickness of composite material of appropriateness, for composite, there is higher bearing capacity and desirable coefficient of friction has great importance.By drawing the analysis of result of the test, when plastic layer is 0.2 mm, the comprehensive comparison of 3 Rotating fields composites is good.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (3)
1. a production technology for steel-base copper-plastic compound material, is characterized in that: it comprises the steps:
1) blanking: cut out steel plate and copper mesh by the size of regulation;
2) copper facing: surface of steel plate is carried out copper plating treatment;
3) sinter, cool: copper mesh is laid on steel plate, puts into the net belt type sintering furnace being connected with protective gas together, be combined with each other, sintering temperature is 950 DEG C, sintering time is 45 ~ 60 minutes, and the coolant jacket by certain length after sintering is lowered the temperature, and once comes out of the stove to 100 DEG C;
4) ptfe composite synthesis colloid: ptfe composite synthesis colloid in the copper mesh layers sintered, and be mixed into a kind of liquid high-abrasive material, finally obtain shaping sheet material;
5) finish rolling: use milling train to carry out finish rolling to sheet material;
6) dry, cool: use drying oven to dry sheet material, make polytetrafluoroethylene (PTFE) synthesize colloid and be solidificated in copper mesh gap;
7) pressure sintering: be down to after normal temperature until sheet material, is carried out pressure sintering;
8) cool: after 3 hours, be cooled to less than 100 DEG C, take out sample, naturally cool to room temperature and be namely processed into polytetrafluoroethylene (PTFE) steel-base copper-plastic compound material.
2. the production technology of steel-base copper-plastic compound material according to claim 1, is characterized in that: described protective gas is nitrogen-hydrogen mixed gas.
3. the production technology of steel-base copper-plastic compound material according to claim 1, it is characterized in that: during described pressure sintering, heating-up temperature is 370 ~ 380 DEG C, and pressure is 40.0 ~ 50.0MPa.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105689708A (en) * | 2015-12-31 | 2016-06-22 | 怀宁汉升车辆部件有限公司 | Production process for HS311 steel-based copper plastic self-lubrication material |
| CN109397768A (en) * | 2018-08-13 | 2019-03-01 | 江西东方豹紧固件有限公司 | A kind of conductive polymer Wear-resisting compound board and its manufacture craft |
| CN111822719A (en) * | 2020-07-25 | 2020-10-27 | 杭州富阳横山复合材料有限公司 | Novel powder metallurgy manufacturing process |
| CN114043741A (en) * | 2021-11-17 | 2022-02-15 | 江苏立一新材料科技有限公司 | Processing method of composite material for sliding bearing |
| CN115069625A (en) * | 2022-06-17 | 2022-09-20 | 嘉兴立一新材料股份有限公司 | Composite board processing technology |
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| CN101544078A (en) * | 2009-04-14 | 2009-09-30 | 江苏大学 | Damping and wear resistant composite material and preparation method thereof |
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2015
- 2015-06-25 CN CN201510356668.4A patent/CN104943275A/en active Pending
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| CN101444980A (en) * | 2008-12-09 | 2009-06-03 | 无锡新开河储罐有限公司 | Multi-layered steel-plastic composite board and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105689708A (en) * | 2015-12-31 | 2016-06-22 | 怀宁汉升车辆部件有限公司 | Production process for HS311 steel-based copper plastic self-lubrication material |
| CN109397768A (en) * | 2018-08-13 | 2019-03-01 | 江西东方豹紧固件有限公司 | A kind of conductive polymer Wear-resisting compound board and its manufacture craft |
| CN111822719A (en) * | 2020-07-25 | 2020-10-27 | 杭州富阳横山复合材料有限公司 | Novel powder metallurgy manufacturing process |
| CN114043741A (en) * | 2021-11-17 | 2022-02-15 | 江苏立一新材料科技有限公司 | Processing method of composite material for sliding bearing |
| CN115069625A (en) * | 2022-06-17 | 2022-09-20 | 嘉兴立一新材料股份有限公司 | Composite board processing technology |
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