CN101707295A - Copper-aluminium explosion composite electrical T type copper-aluminium bimetal binding clip and explosion welding method - Google Patents
Copper-aluminium explosion composite electrical T type copper-aluminium bimetal binding clip and explosion welding method Download PDFInfo
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- CN101707295A CN101707295A CN200910185869A CN200910185869A CN101707295A CN 101707295 A CN101707295 A CN 101707295A CN 200910185869 A CN200910185869 A CN 200910185869A CN 200910185869 A CN200910185869 A CN 200910185869A CN 101707295 A CN101707295 A CN 101707295A
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- 238000003466 welding Methods 0.000 title claims abstract description 44
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 238000004880 explosion Methods 0.000 title claims abstract description 24
- 239000002131 composite material Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000010949 copper Substances 0.000 claims abstract description 54
- 229910052802 copper Inorganic materials 0.000 claims abstract description 54
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 43
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 43
- 239000000463 material Substances 0.000 claims abstract description 18
- 239000002360 explosive Substances 0.000 claims description 53
- 239000004411 aluminium Substances 0.000 claims description 40
- 229910052751 metal Inorganic materials 0.000 claims description 24
- 239000002184 metal Substances 0.000 claims description 24
- 239000000758 substrate Substances 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 5
- 239000003814 drug Substances 0.000 claims description 4
- 239000011435 rock Substances 0.000 claims description 4
- 238000002788 crimping Methods 0.000 claims description 3
- 238000005474 detonation Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims description 2
- 239000011094 fiberboard Substances 0.000 claims description 2
- 239000002689 soil Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 16
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000003825 pressing Methods 0.000 abstract description 2
- 230000007423 decrease Effects 0.000 abstract 1
- 230000007704 transition Effects 0.000 description 8
- 238000005253 cladding Methods 0.000 description 7
- 238000000465 moulding Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 239000002585 base Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- -1 aluminium silver Chemical compound 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- QRJOYPHTNNOAOJ-UHFFFAOYSA-N copper gold Chemical compound [Cu].[Au] QRJOYPHTNNOAOJ-UHFFFAOYSA-N 0.000 description 1
- YCKOAAUKSGOOJH-UHFFFAOYSA-N copper silver Chemical compound [Cu].[Ag].[Ag] YCKOAAUKSGOOJH-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a copper-aluminium explosion composite electrical T type copper-aluminium bimetal binding clip and an explosion welding method. The binding clip comprises two opposite binding clip main bodies. A base board of the binding clip main body is made of aluminum. One end of the surface of the base board is explosively welded with a layer of copper. The surface of the binding clip main body is provided with opposite arc grooves which are arranged in T shape for pressing wire. A bolt hole is disposed at two sides of the arc groove. Two binding clip main bodies are pressingly connected by a bolt. The structure of the electrical copper-aluminium T type binding clip of the invention is compact, has preferable connecting property and decreases the use of copper materials. The solution and the manufacturing technology are special, simple and low-cost. The invention not only can be manufactured in large-scale but also has universality for installing on-site, simple operation, low cost and high popularizing speed.
Description
Technical field:
The present invention relates generally to a kind of manufacture method of electric power copper-aluminium bimetal binding clip, relates in particular to a kind of electrical T type copper-aluminium bimetal binding clip and explosion welding method that adopts the explosive welding copper aluminum composite material to make.
Background technology:
Demand for copper-aluminium transition connects is present in the industry-by-industry field, as: industry fields such as electrolytic aluminium, cathode copper, chlor-alkali, oil, chemical industry, electric power and transmission of electricity, power transformation, power equipment.
Be example now with electric power and power equipment industry:
In traditional electric power and the power equipment industry, it mainly is to realize by copper to aluminum adapter bar, copper-aluminium transition wire clip and copper al wiring terminal that copper-aluminium transition connects, and being connected of copper to aluminum adapter bar, copper-aluminium transition wire clip and copper al wiring terminal copper and aluminium itself generally adopts flash welding, friction welding (FW), soldering connection method to realize; Usually, faying face is difficult to realize metallurgical binding completely, and the percent defective height, bond strength is low, copper material consumption is big, occurs phenomenon of rupture easily, and can cause equipment and power transmission and transformation line failure rate height.
This shows that copper aluminium connects problems such as still having the copper consumption is big, manufacturing cost is high, industrialization degree is low, on-the-spot use inconvenience in the power industry.
Summary of the invention:
Purpose of the present invention is exactly in order to remedy the defective of prior art, a kind of electrical T type copper-aluminium bimetal binding clip and explosion welding method that adopts the explosive welding copper aluminum composite material to make that provide that a kind of employing conducts electricity very well, the copper material use amount is few, low cost of manufacture, fitting operation are simple, forever can not come off.
The present invention is achieved by the following technical solutions:
The copper-aluminium explosion composite electrical T type copper-aluminium bimetal binding clip is characterized in that: comprise two involutory binding clip main bodys, described binding clip main body substrate is an aluminium material, and substrate surface one end explosive welding (EW) is connected to layer of copper; Described binding clip body surfaces has respectively and plays being arranged in of line ball effect arcuate furrow T shape, relative, and bolt hole is left in described arcuate furrow both sides, and two connect clip main body and carry out crimping by bolt and connect.
Described copper-aluminium explosion composite electrical T type copper-aluminium bimetal binding clip is characterized in that the welding manner between described aluminium material and the copper layer is to take the welding of metallic explosive welding manner to finish, and bonding state is the metallurgical binding state, and combination rate is 100%.
Described copper-aluminium explosion composite electrical T type copper-aluminium bimetal binding clip, the thickness that it is characterized in that described copper layer is between 0.1mm-4mm; Substrate thickness is 1mm-20mm.
Explosion welding method in the described copper-aluminium explosion composite electrical T type copper-aluminium bimetal binding clip between aluminium material and the copper layer is characterized in that:
(1), adopt aluminium base as the parent metal plate, adopt the copper metallic plate as the plied timber plate, and adopt fiber board as the multiple layer of multiple layer explosive welding liner plate;
(2), selected good multiple layer liner plate, parent metal plate and plied timber plate being carried out surface cleaning handles;
(3), parent metal plate and plied timber plate, a multiple layer liner plate are stacked successively, the medicine frame is placed on the upper surface of multiple layer liner plate, evenly spreads explosive and detonating primer thereof in the medicine frame;
(4), whole welders such as described parent metal plate are placed on the sandy soil basis, and detonating primer carry out the explosive welding construction;
(5), clad metal sheet is carried out Ultrasonic Nondestructive and mechanical property can detect, and clad metal sheet is carried out leveling handle;
(6), to the clad metal sheet behind the leveling heat-treat, cutting and punch forming;
(7) the compound technological parameter of described explosive welding is:
The explosive that uses during explosive welding is defined as rock dynamite No. 2, and detonation way adopts detonator or explosive rope end broadside to ignite;
Determine that the parent metal plate and the spacing ho of multiple layer liner plate are 4.5mm;
The explosive dosage Wg that determines the unit are of multiple layer liner plate upper surface is 1.4g/cm
2
Metallic explosive welding empirical coefficient Kg is decided to be 1.2, and is relevant with explosive character and material.
The occasion that copper, the transition of al wiring end connect in electrical power wiring, a large amount of is present in copper aluminium conversion in the electrical power wiring, connection, the continuous even process; As the power circuit copper of indication of the present invention, " the copper aluminium T molded lines folder " that aluminium is changed, connected; Be a kind of employing explosive welding copper aluminum composite material, solve copper aluminium and connect " T molded lines folder ", manufacturing process and method that the electric power copper aluminium T molded lines of itself copper aluminium connecting mode presss from both sides.
The present invention more relates to manufacturing process and the method that a kind of new power circuit copper-aluminium transition is electrically connected " copper aluminium T molded lines folder ".
This kind technology comprises the manufacture method of " electric power copper aluminium T molded lines folder " between copper aluminium, but is not limited only to the manufacturing scope use of " copper aluminium T molded lines folder " between copper aluminium; Can be copper aluminium, copper silver, copper gold, aluminium silver, etc. " the T molded lines folder " of other intermetallic combining forms make.
Connecting " copper aluminium T molded lines folder " general version between power circuit copper aluminium of the present invention is, main body is mostly to be the aluminium that conducts electricity very well, wherein play one of them upper and lower plates surface, end of line ball effect, each blast is compounded with the layer of copper layer, and another upper and lower plates surface, end and main body that plays the line ball effect is aluminium; Two structural slabs all leave the punching hole of the effect of being connected and fixed.
Beneficial effect of the present invention:
It is tight that electric power copper aluminium among the present invention connects " T molded lines folder " structure; can obtain more superior switching performance; reduced the use amount of copper material; solution and manufacturing process uniqueness, easy, with low cost; not only can carry out large-scale production, also guarantee the on-the-spot versatility of installing and using simultaneously, simple to operation; cost of manufacture is low, and spreading speed is fast.
Description of drawings:
Fig. 1 is a binding clip agent structure schematic diagram of the present invention.
Fig. 2 is structural representation of the present invention (a binding clip main body left end surface bit copper layer).
Fig. 3 is another kind of structural representation of the present invention (a binding clip main body right-hand member surface bit copper layer).
Embodiment:
Referring to Fig. 1,2,3. copper-aluminium explosion composite electrical T type copper connecting clamps, include two involutory binding clip main bodys 1, described binding clip main body 1 substrate is an aluminium material 4, and binding clip main body 1 substrate surface one end explosive welding (EW) is connected to layer of copper 5; Described two binding clip main body 1 surfaces have plays being arranged in of line ball effect arcuate furrow 2 T shape, relative, bolt hole is left in described arcuate furrow 2 both sides, by bolt 3 two binding clip main bodys 1 is carried out crimping and connects. and the thickness of layer of copper 5 is between 0.1mm-4mm; Aluminium material 4 thickness are 1mm-20mm.
As reaching the impact of performance that electric power copper aluminium of the present invention connects " T molded lines folder ", the technology problem that faces completely manifests, and promptly effectively solves obtaining and copper aluminum mother plate T molded lines folder later stage moulding problem of described blast complex copper aluminum mother plate;
At first, be the explosion weld process and the mother metal manufacture method of the compound mother metal of T molded lines folder copper aluminium;
In order to obtain the copper-aluminium transition composite performance of excellent copper aluminium T molded lines folder self, the present invention has adopted the technology of explosive welding, and the copper-aluminium transition welding that solves copper aluminium T molded lines folder self is compound; Explosion weld process:
The essential condition that realizes the metallic explosive welding has following several respects: " assemblage gap of explosive kind, unit are dose, substrate and cladding plate and the dimensional parameters of stagger angle, substrate and cladding plate (thickness, the base that mainly contain sheet material cover ratio) and surface state " etc.
1, explosive kind
Explosive is the energy of explosive welding (EW), its kind and density decision detonation velocity.Explosion velocity is too high, and it is excessive with active force that projected angle of impact is diminished, and tears binding site easily; Explosion velocity is low excessively, can not keep enough blast angles, can not produce good combination.
Owing to be extensive use of 2 in the explosive welding engineering
#Rock explosive, in order to combine with actual production, explosive also adopts powdery ammonium salt explosive (2 in this project
#Rock explosive), its density p=0.53～0.6g/cm
3, explosion velocity 2200m/s～2600m/s.
2, unit are dose
The quantity of explosive is calculated with explosive quantity or the explosive thickness that lays on the cladding plate unit are, with Wg (g/cm
2) expression.
The calculating of dose is gear shaper without theoretical formula still at present, can adopt following empirical equation to calculate.
In the formula:
■---uniform gap value (mm)
■ W
g---unit are dose (g/cm
2)
■ ρ
1---cladding plate density (g/cm
3)
■ δ
1---cladding plate thickness (mm)
■ δ
0---cartridge bag thickness (mm)
■ K
g---metallic explosive welding empirical coefficient;
Determine that the parent metal plate and the spacing ho of multiple layer liner plate are 4.5mm;
The explosive dosage Wg that determines the unit are of multiple layer liner plate upper surface is 1.4g/cm
2
Metallic explosive welding empirical coefficient Kg is decided to be 1.2, and is relevant with explosive character and material.
3, assemblage gap and stagger angle
The energy delivery of explosive welding (EW), absorption, conversion and distribution are to collide by the high speed impact of cladding plate and substrate by the gap to finish and realize.Assemblage gap and stagger angle are one of the principal elements at influence blast angle, and be much no matter stroke speed has if the blast angle is too small in explosive welding (EW), also can not produce the jet phenomenon, causes the serious fusing of faying face on the contrary easily, and strength of joint is low.Adopt the uniform gap value during parallel method explosive welding (EW), represent, be generally 0.5～1.0 times of cladding plate thickness, generally calculate with following experience company with ho:
h
0＝0.2(δ
1+δ
0)
4, surface state
Realize intermetallic metallurgical binding, must effectively remove metal sheet surface is the cover layer of oxide, nitride and adsorbed gas film, reaches tight contact between the metallic plate for making, so that produces interatomic adhesion, establishes and realizes the basis.
Surface state has very important influence with to form the physics contact area relevant to welding quality, must carry out removing surface before the weldering and clean as much as possible with the maintenance metal surface and have certain surface roughness.Experimental result shows that coarse surface both had been difficult to form rippled interface, is easy to again melt and forms the intermediate layer of intermetallic compound.
Secondly, be the moulding process and the method for welding blast complex copper aluminium T molded lines folder;
If the metallic composite motherboard that the metallic explosive welding manner is made, become and be fit to the final required different shape and the material accessory of form of using, so, carry out post-production necessary, that be fit to and the selection of manufacturing process just seems very important for metallic explosive soldering composite material motherboard!
Only " moulding of copper aluminium T molded lines folder " required later stage moulding process methods of indication of the present invention are done an introduction at this;
In order to reach the post-production purpose of " surface quality is good, outer shape is unified, little, waste of material is few " to compound interface damage; To the processing technology of " copper aluminium T molded lines folder moulding " later stage processing and forming operation of indication of the present invention, we have selected the technology of " metal superplastic formation ", well-known " metal superplastic formation " must satisfy three primary conditions:
1. fine-grain tissue
2. certain deformation temperature
3. low rate of straining
According to " metal superplastic formation " technological standards, the temperature rise of bonded composite motherboard needs situation, and motherboard is implemented " superplastic formation " preceding operation of heating, and heating, heat can be high-frequency induction heating, other effective means such as Frequency Induction Heating;
Moulding for the present invention's " copper aluminium T molded lines folder ", to motherboard implement " superplastic formation " preceding heat temperature we be set in 220 ° of-260 ° of scopes and carry out, after satisfying above condition, the explosive composite material motherboard after the temperature rise is placed, treat in the pressing mold tool, according to " rate of straining " of explosive composite material motherboard, adopt press device to give and press for mould;
So far, by for " the copper aluminium T molded lines folder " blank shape after the compression moulding, carry out the necessary later stage simply to intercept, hole, assemble and to have finished whole " moulding of copper aluminium T molded lines folder " and make.
Claims (4)
1. copper-aluminium explosion composite electrical T type copper-aluminium bimetal binding clip, it is characterized in that: comprise two involutory binding clip main bodys, described binding clip main body substrate is an aluminium material, and substrate surface one end explosive welding (EW) is connected to layer of copper; Described binding clip body surfaces has respectively and plays being arranged in of line ball effect arcuate furrow T shape, relative, and bolt hole is left in described arcuate furrow both sides, and two connect clip main body and carry out crimping by bolt and connect.
2. copper-aluminium explosion composite electrical T type copper-aluminium bimetal binding clip according to claim 1, it is characterized in that the welding manner between described aluminium material and the copper layer is to take the welding of metallic explosive welding manner to finish, bonding state is the metallurgical binding state, and combination rate is 100%.
3. copper-aluminium explosion composite electrical T type copper-aluminium bimetal binding clip according to claim 1, the thickness that it is characterized in that described copper layer is between 0.1mm-4mm; Substrate thickness is 1mm-20mm.
4. the explosion welding method in the copper-aluminium explosion composite electrical T type copper-aluminium bimetal binding clip according to claim 1 between aluminium material and the copper layer is characterized in that:
(1), adopt aluminium base as the parent metal plate, adopt the copper metallic plate as the plied timber plate, and adopt fiber board as the multiple layer of multiple layer explosive welding liner plate;
(2), selected good multiple layer liner plate, parent metal plate and plied timber plate being carried out surface cleaning handles;
(3), parent metal plate and plied timber plate, a multiple layer liner plate are stacked successively, the medicine frame is placed on the upper surface of multiple layer liner plate, evenly spreads explosive and detonating primer thereof in the medicine frame;
(4), whole welders such as described parent metal plate are placed on the sandy soil basis, and detonating primer carry out the explosive welding construction;
(5), clad metal sheet is carried out Ultrasonic Nondestructive and mechanical property can detect, and clad metal sheet is carried out leveling handle;
(6), to the clad metal sheet behind the leveling heat-treat, cutting and punch forming;
(7) the compound technological parameter of described explosive welding is:
The explosive that uses during explosive welding is defined as rock dynamite No. 2, and detonation way adopts detonator or explosive rope end broadside to ignite;
Determine that the parent metal plate and the spacing ho of multiple layer liner plate are 4.5mm;
The explosive dosage Wg that determines the unit are of multiple layer liner plate upper surface is 1.4g/cm
2
Metallic explosive welding empirical coefficient Kg is decided to be 1.2, and is relevant with explosive character and material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101858697A CN101707295B (en) | 2009-12-09 | 2009-12-09 | Copper-aluminium explosion composite electrical T type copper-aluminium bimetal binding clip and explosion welding method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101858697A CN101707295B (en) | 2009-12-09 | 2009-12-09 | Copper-aluminium explosion composite electrical T type copper-aluminium bimetal binding clip and explosion welding method |
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| Publication Number | Publication Date |
|---|---|
| CN101707295A true CN101707295A (en) | 2010-05-12 |
| CN101707295B CN101707295B (en) | 2011-12-28 |
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ID=42377498
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|---|---|---|---|
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102760516A (en) * | 2012-07-05 | 2012-10-31 | 中国石油天然气股份有限公司 | Application and manufacturing method of copper-aluminum transition composite splicing strip and multi-stage composite splicing strip |
| CN103151624A (en) * | 2013-03-07 | 2013-06-12 | 河南省电力公司驻马店供电公司 | Connecting clamp of distribution transformer bushing lead screw rod and line wire |
| CN103545628A (en) * | 2013-11-06 | 2014-01-29 | 国家电网公司 | Copper and aluminum abnormal-shaped jointing clamp |
| CN105048124A (en) * | 2015-06-30 | 2015-11-11 | 国网浙江东阳市供电公司 | Aluminum-based hot-rolled copper clad transition T-shaped wire clamp |
| CN106058606A (en) * | 2016-07-18 | 2016-10-26 | 金锚电力控股有限公司 | Production technology of copper and aluminum composite transition connection terminal |
| CN106505470A (en) * | 2016-12-15 | 2017-03-15 | 云南电网有限责任公司带电作业分公司 | A kind of special T-shaped wire clamp of 10kV distribution line live workings |
| CN106964892A (en) * | 2017-04-27 | 2017-07-21 | 嘉峪关天源新材料有限责任公司 | A Production Process of Explosive Welding of Large-area Composite Panels |
| CN109936019A (en) * | 2019-04-02 | 2019-06-25 | 国网福建永春县供电有限公司 | A kind of copper-aluminium transition arm and batch meter for batch meter |
| CN113084325A (en) * | 2021-04-19 | 2021-07-09 | 陕西红旗鸿远金属复合材料有限公司 | Explosive welding method for copper-aluminum transition wire clamp |
| CN118385717A (en) * | 2024-05-22 | 2024-07-26 | 湖南方恒新材料技术股份有限公司 | U-shaped copper-aluminum composite transition plate and preparation method and application thereof |
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2009
- 2009-12-09 CN CN2009101858697A patent/CN101707295B/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102760516A (en) * | 2012-07-05 | 2012-10-31 | 中国石油天然气股份有限公司 | Application and manufacturing method of copper-aluminum transition composite splicing strip and multi-stage composite splicing strip |
| CN103151624A (en) * | 2013-03-07 | 2013-06-12 | 河南省电力公司驻马店供电公司 | Connecting clamp of distribution transformer bushing lead screw rod and line wire |
| CN103545628A (en) * | 2013-11-06 | 2014-01-29 | 国家电网公司 | Copper and aluminum abnormal-shaped jointing clamp |
| CN105048124A (en) * | 2015-06-30 | 2015-11-11 | 国网浙江东阳市供电公司 | Aluminum-based hot-rolled copper clad transition T-shaped wire clamp |
| CN106058606A (en) * | 2016-07-18 | 2016-10-26 | 金锚电力控股有限公司 | Production technology of copper and aluminum composite transition connection terminal |
| CN106058606B (en) * | 2016-07-18 | 2018-05-25 | 金锚电力控股有限公司 | A kind of production technology of Copper-Aluminum compound transition terminal |
| CN106505470A (en) * | 2016-12-15 | 2017-03-15 | 云南电网有限责任公司带电作业分公司 | A kind of special T-shaped wire clamp of 10kV distribution line live workings |
| CN106964892A (en) * | 2017-04-27 | 2017-07-21 | 嘉峪关天源新材料有限责任公司 | A Production Process of Explosive Welding of Large-area Composite Panels |
| CN109936019A (en) * | 2019-04-02 | 2019-06-25 | 国网福建永春县供电有限公司 | A kind of copper-aluminium transition arm and batch meter for batch meter |
| CN113084325A (en) * | 2021-04-19 | 2021-07-09 | 陕西红旗鸿远金属复合材料有限公司 | Explosive welding method for copper-aluminum transition wire clamp |
| CN118385717A (en) * | 2024-05-22 | 2024-07-26 | 湖南方恒新材料技术股份有限公司 | U-shaped copper-aluminum composite transition plate and preparation method and application thereof |
| CN118385717B (en) * | 2024-05-22 | 2025-04-18 | 湖南方恒新材料技术股份有限公司 | A U-shaped copper-aluminum composite transition plate and its preparation method and application |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101707295B (en) | 2011-12-28 |
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