CN107813558A - A kind of resilient electrical contact composite for substituting beryllium copper and preparation method thereof - Google Patents
A kind of resilient electrical contact composite for substituting beryllium copper and preparation method thereof Download PDFInfo
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- CN107813558A CN107813558A CN201711111730.9A CN201711111730A CN107813558A CN 107813558 A CN107813558 A CN 107813558A CN 201711111730 A CN201711111730 A CN 201711111730A CN 107813558 A CN107813558 A CN 107813558A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
- B32B15/013—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium
- B32B15/015—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium the said other metal being copper or nickel or an alloy thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
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Abstract
The invention discloses a kind of resilient electrical contact composite for substituting beryllium copper and preparation method thereof, methods described is：Stainless steel material strip and Cu material strips are subjected to composite rolling, prepare stainless steel/two layers of Cu or stainless steel/three layers of Cu/ stainless steels compound material band；Stainless steel/two layers of Cu or stainless steel/three layers of Cu/ stainless steels compound material band are subjected to diffusion heat treatments；Compound material band after above-mentioned heat treatment is subjected to repeatedly (rolling → softening heat treatment) circular treatment；Compound material band after above-mentioned heat treatment is subjected to straightening；Slitting is carried out after compound material band after above-mentioned straightening is cleaned with water stage by stage；Compound material band after above-mentioned slitting is subjected to punching, obtains required resilient electrical contact material.The present invention is using heat treatment stage by stage and repeatedly (rolling → softening heat treatment) circular treatment combines, high intensity, high resiliency, the environment-friendly type electric contact elastic material of low-resistivity can be prepared, and technique is simple, cost is cheap, to equipment without particular/special requirement.
Description
Technical field
The present invention relates to a kind of electric device field, specifically, refers to a kind of replacement in new material application field
Resilient electrical contact composite of beryllium copper and preparation method thereof.
Background technology
Beallon is because with high intensity, elasticity, fatigue strength, anticorrosive, electric conductivity and nonmagnetic etc. a series of excellent
Mechanics, chemistry, electric property be widely used in the resilient electrical contact element of electric switch.But beryllium and its compound are to people
Body has huge toxic side effect, is one of serious industrial hazard, therefore finds a kind of environment-friendly type electricity of low beryllium even without beryllium
Contact resilient material becomes particularly important.
301st, 304 and 316L stainless steels with performances such as good plasticity, toughness, tensile strength, corrosion resistances because existing
Industry, furniture decoration industry and food medical industry are widely used.Compared with beallon, 301 (or 304,
316L) tensile strength of stainless steel is high by 10%, and elongation percentage is high 1 times, and hardness is high by 18%, and fusing point is high by 35%, and stainless steel into
This is lower than pure Cu and BeCu.Therefore i.e. stainless steel/Cu of new material a kind of while that there is the characteristics of stainless steel and copper is used, is replaced
For the new material of beryllium copper material, physical property it is close or better than beryllium copper (elasticity is slightly higher, resistance is lower slightly) on the basis of, in reality
It is substantially better than beryllium copper in application environment, beryllium copper is will appear from the application environment more than 200 DEG C with temperature and usage time
Rise, obvious weak phenomenon, that is, its intensity decreases, flexibility decrease occur, and stainless steel/Cu joint products can not only
Excellent mechanics and electric property are obtained, cost can be saved, and normal sustained service is remained in the environment more than 400 DEG C.
Through retrieval, it is found that the Research Literature both at home and abroad on copper-clad stainless steel material preparation method is as follows：
Document【1】Chinese invention patent：The complex method of copper and stainless steel, application number：03158378.4, publication number：CN
1262383 C；
Document【2】Chinese invention patent：The diffusion welding method of copper alloy and stainless steel, application number：
200910254462.5 publication number：CN 101745736 B；
Document【3】Chinese invention patent：A kind of preparation method of copper-steel composite material, application number：
201210054764.X publication number：CN 102671942 A；
Document【4】Chinese utility model patent：Tantalum-copper-stainless-steel explosive clad plate, application number：20112055461.0
Publication number：CN 202021875 U；
Document【5】Chinese invention patent：A kind of production method of the cold composite strip of 304 stainless steel and fine copper, application number：
201210322873.5 publication number：CN 102794300 B；
Document【6】Chinese invention patent：A kind of stainless steel clad plate and its manufacture method, application number：
201310213211.9 publication number：CN 103264546 B.
At present, it is compound, hot to be broadly divided into welding, Explosion composite, cold rolling for the preparation method on stainless steel/Cu composites
Roll four classes.Wherein welding method can be divided into resistance brazing, friction welding (FW), solids control equipment and liquid-phase diffusion welding and connect again【Document 1-
3】.The process equipment that welding method is related to is simple, the effective composite stainless steel plate of energy and Cu or other metal bases, but because
Using solder and high-temperature process, the fragile materials such as intermetallic compound are easily produced at solder bond face, so as to cause welding to be tied
The mechanical property in conjunction face is poor.
Although can solve the problems, such as that compound interface intermetallic compound produces by the method for Explosion composite, due to it
Operational characteristic, the thickness of composite are restricted, and environmental pollution and safety problem are more serious caused by blast【Text
Offer 4】.
Using the preparation method of single cold rolling → annealing, it can effectively improve surface oxidation, the end face life of composite
The advantages that rust, the problems such as composite bed is uneven, and this method production efficiency are high, and dimensional accuracy is high, but single pass causes
Machining deformation amount is small, can not meet light sheet material (≤0.5mm) production requirement【Document 5】.
The quick, effectively compound of material can be realized using the method for hot rolling, the sample of large-size can be produced, but roll
The dimensional thickness of system is difficult to control, and surface quality is poor, is usually used in the production of blank【Document 6】.
The content of the invention
The present invention is directed to above-mentioned the shortcomings of the prior art and defect, there is provided a kind of to be approached in physical property or better than beryllium
A kind of resilient electrical contact composite for replacement beryllium copper that copper (elasticity slightly higher, resistance is lower slightly), hot property are stable, cost is cheap and
Its preparation method, and then greatly improve the folding performance and service life of electric switch etc..
To achieve the above object, the present invention uses following technical scheme：
According to the first object of the present invention, there is provided a kind of preparation method of resilient electrical contact composite, methods described bag
Include following steps：
The first step：Stainless steel material strip and Cu material strips are subjected to composite rolling, prepare stainless steel/two layers of Cu or stainless steel/
Three layers of compound material band of Cu/ stainless steels；
Second step：Stainless steel/two layers of Cu or stainless steel/three layers of Cu/ stainless steels compound material band are subjected to diffusion heat treatments；
3rd step：Compound material band after above-mentioned heat treatment is subjected to repeatedly (rolling → softening heat treatment) circular treatment；
4th step：Compound material band after above-mentioned heat treatment is subjected to straightening；
5th step：Slitting is carried out after compound material band after above-mentioned straightening is cleaned with water stage by stage；
6th step：Compound material band after above-mentioned slitting is subjected to punching, is prepared into the resilient electrical contact of required specification size
Material.
Further, the 7th step is carried out after the 6th step, i.e.,：Above-mentioned resilient electrical contact material is cleaned, packed.
Preferably, in the first step：
Described composite rolling is compound using cold rolling, and material strip width be 100mm~650mm, rolling reduction for 50%~
70%, recombination rate is 1.5m/min~4m/min.
Preferably, in second step：
Described diffusion heat treatments, temperature are 800 DEG C~1083 DEG C, preferably 850 DEG C~950 DEG C, using continuous annealing,
Speed is 1m/min~3m/min, atmosphere H2Or N2, gas flow >=2m3/h.The diffusion heat treatments can be expanded by atom
The scattered bond strength further strengthened between different cladding, when temperature is less than 800 DEG C, atoms permeating is slower, and when temperature is higher than
1083 DEG C, Cu layers melt due to reaching fusing point.In addition, since Cu and Fe is easily oxidized at high temperature, therefore use inertia
Gas or reducibility gas are as protective atmosphere.
Preferably, in the 3rd step：
Multiple (rolling → softening heat treatment) circulating process of described use, i.e., required using the finished product thickness needed for,
The deflection of rolling is calculated, using cold-rolling process, carries out once cold rolling and be once heat-treated to be spaced circular treatment successively, i.e.,：It is cold
1 → heat treatment → 2 → heat treatment of cold rolling → cold rolling 3 → heat treatment ... is rolled, per pass cold rolling process rolls before last one of cold rolling
Deflection processed is 15%~35%, by this circulating process, the homogeneity of material strip thickness after controlled rolling, and in the operation of rolling
The defects of occurring without cracking, crushing, ensure the extension of compound material band according to last one of cold rolling reduction and corresponding heat treatment
The elasticity of property and finished product contact material；
Described softening heat treatment uses continuous annealing, temperature：900 DEG C~1050 DEG C, speed is 0.5m/min~3.0m/
Min, atmosphere H2Or N2, gas flow >=2m3/ h, the softening heat treatment can cause compound material band to recover soft state, ensure compound
Ductility of the material strip in the operation of rolling.
Preferably, in the 4th step：
Described straightening elongation control be 0.5% within, preferably 0~0.3%, material strip thickness deviation for ±
0.01mm。
Preferably, in the 5th step：
Described cleaning with water stage by stage is cleaned stage by stage using different warm areas, the first stage：Degreasing agent is added in clear water, temperature
Spend for 40 DEG C~60 DEG C, compound tape surface is cleaned clearly using soft brush, removes compound tape surface grease；Second-order
Section：Temperature is 40 DEG C~60 DEG C, and compound tape surface is cleaned in clear water, removes compound tape surface remnants degreasings
Agent；Phase III (only to stainless steel/two layers of Cu classes material)：At room temperature, environment-friendly type protective agent is added in clear water, to compound
Tape surface Passivation Treatment；Fourth stage：Material strip is dried, temperature is 60 DEG C~80 DEG C.By cleaning stage by stage, remove by institute
Composite material surface impurity is stated, and passes through Passivation Treatment, oxygen of the composite in transport, storage and the course of work can be reduced
Change discoloration.
Described slitting speed is 10m/min~30m/min, slitting width 10mm~300mm.
According to the second object of the present invention, there is provided a kind of resilient electrical contact composite being prepared by the above method,
The resilient electrical contact composite is made of stainless steel/two layers of Cu or stainless steel/three layers of Cu/ stainless steels compound material band,
Stainless steel layer thickness is the 20-80% of whole compound material tape thickness in two layers of compound material band；In three layers of compound material band it is unilateral not
Steel layer of becoming rusty thickness is the 20%-45% of whole compound material band.
Preferably, Cu is that red copper is T2 copper, stainless steel 301,304 or 316L in the compound material band.
Compared with prior art, the invention has the advantages that：
From present invention above technology implement technique can be seen that, on the one hand, by using stage by stage heat treatment and it is more
The combination of secondary (rolling → softening heat treatment) circular treatment, overcome welding method weld interface contact loosely, diffusion not
Uniformly, the thermal stress of hot rolling concentrate, low intensity, the deflection of single cold rolling is small, the deficiencies of the environmental problem of Explosion composite, prepares
The sample gone out maintains preferably elasticity and heat endurance, pattern, size, mechanical life, electric property etc. and all met
The requirement that client proposes；On the other hand, by cleaning stage by stage, remove by the composite material surface impurity, and pass through
Passivation Treatment, oxidation stain of the composite in transport, storage and the course of work can be reduced.
The present invention can prepare high intensity, high resiliency, the environment-friendly type electric contact elastic material of low-resistivity, and technique letter
Single, cost is cheap, to equipment without particular/special requirement.
The inventive method prepares low cost product, and technique is simple, can carry out the production of scale, has good economy
Use value.
Brief description of the drawings
Fig. 1 is stainless steel/compound cross section structure figure of two layers of Cu material strips in section Example of the present invention；
Fig. 2 is the stainless steel/three layers of compound cross section structure of Cu/ stainless steels material strip used in section Example of the present invention
Figure；
Wherein：
1 is that stainless steel is 301,304 or 316L layers, and 2 be layers of copper.
Embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection domain.
Embodiment one
Exemplified by preparing two layers of resilient electrical contact composite as shown in Figure 1,1 is 304 stainless steel layers, and 2 be Cu layers：Prepare
Resilient electrical contact composite be made of stainless steel/two layers of Cu compound material bands, the stainless steel thickness in two layers of compound material band
Spend for the 20-80% of whole compound material tape thickness；
The first step：304 stainless steel material strips and Cu material strips are subjected to composite rolling, prepare two layers of compound material band of 304/Cu,
Compound using cold rolling, material strip width is 250mm, rolling reduction 60%, recombination rate 1.5m/min；
Second step：Two layers of compound material band of 304/Cu is subjected to diffusion heat treatments, temperature is 875 DEG C, using continuous annealing, speed
Rate is 1.0m/min, atmosphere H2, gas flow 3m3/h；
3rd step：Compound material band after above-mentioned heat treatment is subjected to (rolling → softening heat treatment) circular treatment three times, it is cold
Per pass cold rolling process rolling reduction is 15% before rolling into product, using softening heat treatment, temperature：925 DEG C, speed 0.7m/
Min, atmosphere H2, gas flow 3m3/h；Finished product cold rolling reduction is 50%.
4th step：By after above-mentioned heat treatment compound material band carry out straightening, straightening elongation control be 0.5% within, it is excellent
Elect 0~0.3% as, material strip thickness deviation is ± 0.01mm；
5th step：Slitting is carried out after compound material band after above-mentioned straightening is cleaned with water stage by stage, using different warm areas stage by stage
Cleaning, first stage：Environment-friendlydegreasant degreasant is added in clear water, temperature is 40 DEG C, compound tape surface is carried out using soft brush clear
Wash, remove compound tape surface grease；Second stage：Temperature is 40 DEG C, and compound tape surface is cleaned in clear water, gone
Except compound tape surface remnants degreasing agents；Phase III：At room temperature, environment-friendly type protective agent is added in clear water, to compound material
Belt surface Passivation Treatment；Fourth stage：Material strip is dried, temperature is 60 DEG C；Slitting speed is 10m/min, and slitting width is
12mm。
6th step：Compound material band after above-mentioned slitting is subjected to punching, is prepared into the resilient electrical contact of required specification size
Material.
7th step：Above-mentioned resilient electrical contact material is cleaned, packed.
Embodiment two
Exemplified by preparing two layers of resilient electrical contact composite as shown in Figure 1,1 is 304 stainless steels, and 2 be Cu：
The first step：304 stainless steel material strips and Cu material strips are subjected to composite rolling, prepare two layers of compound material band of 304/Cu,
Compound using cold rolling, material strip width is 400mm, rolling reduction 75%, recombination rate 3m/min；
Second step：Two layers of compound material band of 304/Cu is subjected to diffusion heat treatments, temperature is 900 DEG C, using continuous annealing, speed
Rate is 2.0m/min, atmosphere H2, gas flow 3m3/h；
3rd step：Compound material band after above-mentioned heat treatment is subjected to (rolling → softening heat treatment) circular treatment three times, it is cold
Per pass cold rolling process rolling reduction is 35% before rolling into product, and using softening heat treatment, temperature is 1000 DEG C, speed 2.5m/
Min, atmosphere H2, gas flow 3m3/h；Finished product cold rolling reduction is 50%.
4th step：Compound material band after above-mentioned heat treatment is subjected to straightening, straightening elongation control is material within 0.5%
Tape thickness tolerance is ± 0.01mm；
5th step：Slitting is carried out after compound material band after above-mentioned straightening is cleaned with water stage by stage, using different warm areas stage by stage
Cleaning：
First stage：Environment-friendlydegreasant degreasant is added in clear water, temperature is 50 DEG C, and compound tape surface is carried out using soft brush
Cleaning, removes compound tape surface grease；
Second stage：Temperature is 50 DEG C, and compound tape surface is cleaned in clear water, it is residual to remove compound tape surface
Remaining degreasing agent；
Phase III：At room temperature, environment-friendly type protective agent is added in clear water, to compound tape surface Passivation Treatment；
Fourth stage：Material strip is dried, temperature is 70 DEG C；Slitting speed is 10m/min, and slitting width is 12mm.
6th step：Compound material band after above-mentioned slitting is subjected to punching, is prepared into the resilient electrical contact of required specification size
Material.
7th step：Above-mentioned resilient electrical contact material is cleaned, packed.
Embodiment three
Exemplified by preparing three layers of resilient electrical contact composite as shown in Figure 2,1 is 301 stainless steels, and 2 be Cu：The bullet of preparation
Property electric contact composite material be made of stainless steel/three layers of Cu/ stainless steels compound material band, it is unilateral stainless in three layers of compound material band
Steel layer thickness is the 20%-45% of whole compound material band.
The first step：301 stainless steel material strips and Cu material strips are subjected to composite rolling, prepare tri- layers of compound materials of 301/Cu/301
Band, compound using cold rolling, material strip width is 400mm, rolling reduction 60%, recombination rate 1.5m/min；
Second step：Stainless steel/three layers of Cu/ stainless steels compound material band carries out diffusion heat treatments, and temperature is 925 DEG C, using even
Continuous annealing, speed 1.5m/min, atmosphere H2, gas flow 3m3/h；
3rd step：Compound material band after above-mentioned heat treatment is subjected to four (rolling → softening heat treatment) circular treatments, it is cold
Per pass cold rolling process rolling reduction is 35% before rolling into product, using softening heat treatment, temperature：950 DEG C, speed 1.3m/
Min, atmosphere H2, gas flow 3m3/h；Finished product cold rolling reduction is 40%.
4th step：By after above-mentioned heat treatment compound material band carry out straightening, straightening elongation control be 0.5% within, it is excellent
Elect 0~0.3% as, material strip thickness deviation is ± 0.01mm；
5th step：Slitting is carried out after compound material band after above-mentioned straightening is cleaned with water stage by stage, using different warm areas stage by stage
Cleaning, first stage：Environment-friendlydegreasant degreasant is added in clear water, temperature is 40 DEG C, and compound tape surface is carried out clearly using soft brush
Cleaning, removes compound tape surface grease；Second stage：Temperature is 40 DEG C, and compound tape surface is cleaned in clear water,
Remove the compound tape surface remnants degreasing agent phase IIIs：Material strip is dried, temperature is 80 DEG C；Slitting speed is 10m/min, point
Bar width is 15mm.
6th step：Compound material band after above-mentioned slitting is subjected to punching, is prepared into the resilient electrical contact of required specification size
Material.
7th step：Above-mentioned resilient electrical contact material is cleaned, packed.
Example IV
Exemplified by preparing three layers of resilient electrical contact composite as shown in Figure 2,1 is 301 stainless steels, and 2 be Cu：
The first step：301 stainless steel material strips and Cu material strips are subjected to composite rolling, prepare tri- layers of compound materials of 301/Cu/301
Band, compound using cold rolling, material strip width is 200mm, rolling reduction 50%, recombination rate 4m/min；
Second step：Stainless steel/three layers of Cu/ stainless steels compound material band carries out diffusion heat treatments, and temperature is 950 DEG C, using even
Continuous annealing, speed 3m/min, atmosphere N2, gas flow 3m3/h；
3rd step：Compound material band after above-mentioned heat treatment is subjected to four (rolling → softening heat treatment) circular treatments, it is cold
Per pass cold rolling process rolling reduction is 15% before rolling into product, using softening heat treatment, 900 DEG C, speed 3m/min of temperature, gas
Atmosphere is H2, gas flow 3m3/h；Finished product cold rolling reduction 50%.
4th step：Compound material band after above-mentioned heat treatment is subjected to straightening, straightening elongation control is material within 0.5%
Tape thickness tolerance is ± 0.01mm；
5th step：Slitting is carried out after compound material band after above-mentioned straightening is cleaned with water stage by stage, using different warm areas stage by stage
Cleaning：
First stage：Environment-friendlydegreasant degreasant is added in clear water, temperature is 60 DEG C, and compound tape surface is entered clearly using soft brush
Row cleaning, removes compound tape surface grease；
Second stage：Temperature is 60 DEG C, and compound tape surface is cleaned in clear water, it is residual to remove compound tape surface
Remaining degreasing agent；
Phase III：Material strip is dried, temperature is 70 DEG C；Slitting speed is 10m/min, and slitting width is 15mm.
6th step：Compound material band after above-mentioned slitting is subjected to punching, is prepared into the resilient electrical contact of required specification size
Material.
7th step：Above-mentioned resilient electrical contact material is cleaned, packed.
By made from embodiment 1~4 stainless steel double copper material strip carry out performance detection, and with existing method made from stainless steel
Multiple Cu products, beryllium copper material are compared, as a result as shown in table 1 below, table 2：
The unlike material material strip physical property of table 1 contrasts
| Embodiment | Material | Tensile strength | Resistivity | Elongation after fracture |
| Embodiment 1 | 304/Cu | 700MPa | 4μΩ·cm | 4% |
| Embodiment 2 | 304/Cu | 700MPa | 4μΩ·cm | 4% |
| Embodiment 3 | 301/Cu/301 | 1225MPa | 7.2μΩ·cm | 3% |
| Embodiment 4 | 301/Cu/301 | 1295MPa | 7.2μΩ·cm | 2% |
| Existing method | 304/Cu | 450MPa | - | 15% |
| Beryllium copper | QBe1.7 | 637MPa | 9.4μΩ·cm | 3% |
The unlike material material strip different temperatures hardness balance of table 2
It can be seen from above-described embodiment that the present invention is using heat treatment stage by stage and repeatedly (at rolling → softening heat
Reason) circular treatment combination, high intensity, high resiliency, the environment-friendly type electric contact elastic material of low-resistivity, and technique can be prepared
Simply, cost is cheap, to equipment without particular/special requirement.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to is assert
The embodiment of the present invention is only limitted to this, for general technical staff of the technical field of the invention, is not taking off
On the premise of from present inventive concept, some simple deduction or replace can also be made, the present invention should be all considered as belonging to and be carried
Claims of friendship determine protection domain.
Claims (10)
- A kind of 1. preparation method of resilient electrical contact composite, it is characterised in that：Comprise the following steps：The first step：Stainless steel material strip and Cu material strips are subjected to composite rolling, prepare stainless steel/two layers of Cu or stainless steel/Cu/ not Become rusty three layers of compound material band of steel；Second step：Stainless steel/two layers of Cu or stainless steel/three layers of Cu/ stainless steels compound material band are subjected to diffusion heat treatments；3rd step：Compound material band after above-mentioned heat treatment repeatedly first roll to the circulating process of after-tack heat treatment；4th step：Compound material band after above-mentioned heat treatment is subjected to straightening；5th step：Slitting is carried out after compound material band after above-mentioned straightening is cleaned with water stage by stage；6th step：Compound material band after above-mentioned slitting is subjected to punching, is prepared into the resilient electrical contact material of required specification size.
- 2. the preparation method of resilient electrical contact composite according to claim 1, it is characterised in that：In 3rd step, institute The use stated repeatedly first rolls the circulating process of after-tack heat treatment, i.e. once cold rolling and a softening heat treatment is spaced follows successively Ring processing, per pass cold rolling process rolling reduction is 15%~35% before last one of cold rolling.
- 3. the preparation method of resilient electrical contact composite according to claim 2, it is characterised in that：In 3rd step, institute The softening heat treatment stated uses continuous annealing, temperature：900 DEG C~1050 DEG C, speed is 0.5m/min~3.0m/min, and atmosphere is H2Or N2, gas flow >=2m3/ h, the softening heat treatment can cause compound material band to recover soft state, ensure that compound material band is rolling During ductility.
- 4. the preparation method of resilient electrical contact composite according to claim 1, it is characterised in that：In 5th step, institute Cleaning with water stage by stage for stating is cleaned stage by stage using different warm areas, for stainless steel/three layers of Cu/ stainless steels compound material band：First stage：Degreasing agent is added in clear water, temperature is 40 DEG C~60 DEG C, and compound tape surface is carried out clearly using soft brush Cleaning, removes compound tape surface grease；Second stage：Temperature is 40 DEG C~60 DEG C, and compound tape surface is cleaned in clear water, removes compound tape surface Remaining degreasing agent；Phase III：Material strip is dried, temperature is 60 DEG C~80 DEG C.
- 5. the preparation method of resilient electrical contact composite according to claim 1, it is characterised in that：In 5th step, institute Cleaning with water stage by stage for stating is cleaned stage by stage using different warm areas, for stainless steel/two layers of Cu compound material bands：First stage：Degreasing agent is added in clear water, temperature is 40 DEG C~60 DEG C, and compound tape surface is carried out clearly using soft brush Cleaning, removes compound tape surface grease；Second stage：Temperature is 40 DEG C~60 DEG C, and compound tape surface is cleaned in clear water, removes compound tape surface Remaining degreasing agent；Phase III：At room temperature, environment-friendly type protective agent is added in clear water, to compound tape surface Passivation Treatment；Fourth stage：Material strip is dried, temperature is 60 DEG C~80 DEG C.
- 6. the preparation method of the resilient electrical contact composite according to claim any one of 1-5, it is characterised in that：First In step, described composite rolling is compound using cold rolling, and material strip width be 100mm~650mm, rolling reduction for 50%~ 70%, recombination rate is 1.5m/min~4m/min.
- 7. the preparation method of the resilient electrical contact composite according to claim any one of 1-5, it is characterised in that：Second In step, described diffusion heat treatments, temperature is 800 DEG C~1083 DEG C, preferably 850 DEG C~950 DEG C, fast using continuous annealing Rate is 1m/min~3m/min, atmosphere H2Or N2, gas flow >=2m3/h。
- 8. the preparation method of the resilient electrical contact composite according to claim any one of 1-5, it is characterised in that：4th In step, described straightening elongation control is within 0.5% preferably 0~0.3%, and material strip thickness deviation is ± 0.01mm.
- 9. the preparation method of the resilient electrical contact composite according to claim any one of 1-5, it is characterised in that the 5th In step, described slitting speed is 10m/min~30m/min, slitting width 10mm~300mm.
- 10. a kind of resilient electrical contact composite being prepared by any one of the claims 1-9 methods described, the bullet Property electric contact composite material be made of stainless steel/two layers of Cu or stainless steel/three layers of Cu/ stainless steels compound material band, it is multiple at two layers Close the 20-80% that stainless steel layer thickness in material strip is whole compound material tape thickness；The unilateral stainless steel layer in three layers of compound material band Thickness is the 20%-45% of whole compound material band.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711111730.9A CN107813558A (en) | 2017-11-13 | 2017-11-13 | A kind of resilient electrical contact composite for substituting beryllium copper and preparation method thereof |
| PCT/CN2018/115144 WO2019091483A1 (en) | 2017-11-13 | 2018-11-13 | Elastic electrical contact composite material for replacing beryllium copper and preparation method therefor |
Applications Claiming Priority (1)
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| CN201711111730.9A CN107813558A (en) | 2017-11-13 | 2017-11-13 | A kind of resilient electrical contact composite for substituting beryllium copper and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019091483A1 (en) * | 2017-11-13 | 2019-05-16 | 温州宏丰电工合金股份有限公司 | Elastic electrical contact composite material for replacing beryllium copper and preparation method therefor |
| CN111098094A (en) * | 2019-12-30 | 2020-05-05 | 深圳市鑫越新材料科技有限公司 | Battery connecting material and processing technology thereof |
| CN113427854A (en) * | 2021-07-02 | 2021-09-24 | 温州宏丰特种材料有限公司 | Environment-friendly elastic functional composite material capable of replacing beryllium copper and preparation method and application thereof |
| CN114438367A (en) * | 2022-01-21 | 2022-05-06 | 上海殷菲合金材料有限公司 | Elastic electric contact composite material and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102126112A (en) * | 2011-03-16 | 2011-07-20 | 中南大学 | Preparation method of electromagnetic shielding multi-layer composite material in electric vacuum device |
| CN102794300A (en) * | 2012-09-04 | 2012-11-28 | 无锡银荣板业有限公司 | Production method of 304 stainless steel and pure-copper cold compound coiled material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2003266102A (en) * | 2002-03-13 | 2003-09-24 | Nippon Steel Corp | Equipment and method for continuously heat-treating cold rolled sheet of grain-oriented silicon steel |
| CN105489410B (en) * | 2015-11-17 | 2020-04-24 | 温州宏丰电工合金股份有限公司 | Copper-aluminum composite material, miniature circuit breaker coil assembly and preparation method thereof |
| CN107813558A (en) * | 2017-11-13 | 2018-03-20 | 温州宏丰金属基功能复合材料有限公司 | A kind of resilient electrical contact composite for substituting beryllium copper and preparation method thereof |
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2017
- 2017-11-13 CN CN201711111730.9A patent/CN107813558A/en active Pending
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- 2018-11-13 WO PCT/CN2018/115144 patent/WO2019091483A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102126112A (en) * | 2011-03-16 | 2011-07-20 | 中南大学 | Preparation method of electromagnetic shielding multi-layer composite material in electric vacuum device |
| CN102794300A (en) * | 2012-09-04 | 2012-11-28 | 无锡银荣板业有限公司 | Production method of 304 stainless steel and pure-copper cold compound coiled material |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019091483A1 (en) * | 2017-11-13 | 2019-05-16 | 温州宏丰电工合金股份有限公司 | Elastic electrical contact composite material for replacing beryllium copper and preparation method therefor |
| CN111098094A (en) * | 2019-12-30 | 2020-05-05 | 深圳市鑫越新材料科技有限公司 | Battery connecting material and processing technology thereof |
| CN113427854A (en) * | 2021-07-02 | 2021-09-24 | 温州宏丰特种材料有限公司 | Environment-friendly elastic functional composite material capable of replacing beryllium copper and preparation method and application thereof |
| CN114438367A (en) * | 2022-01-21 | 2022-05-06 | 上海殷菲合金材料有限公司 | Elastic electric contact composite material and preparation method thereof |
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| WO2019091483A1 (en) | 2019-05-16 |
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