CN201859749U - Copper-aluminum bimetal binding clip for copper-aluminum explosion composite bolt type transformer - Google Patents
Copper-aluminum bimetal binding clip for copper-aluminum explosion composite bolt type transformer Download PDFInfo
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- CN201859749U CN201859749U CN2009201810640U CN200920181064U CN201859749U CN 201859749 U CN201859749 U CN 201859749U CN 2009201810640 U CN2009201810640 U CN 2009201810640U CN 200920181064 U CN200920181064 U CN 200920181064U CN 201859749 U CN201859749 U CN 201859749U
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- copper
- aluminum
- aluminium
- aluminium base
- type transformer
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Abstract
The utility model discloses a copper-aluminum bimetal binding clip for a bolt type transformer, comprising an aluminum substrate. One end of the aluminum substrate is provided with an integrated copper layer by explosive welding, and the copper layer bends inward and the middle of the copper layer is cylinder-shaped, and the other end of the aluminum substrate is a flat plate. The utility model is characterized in that the flat plate end of the aluminum substrate is provided with an aluminum lead pressing plate; the flat plate end of the aluminum substrate and the middle part of the aluminum lead pressing plate are respectively provided with a semi-arc groove for pressing line; the two sides of the semi-arc groove of the aluminum lead pressing plate are connected to the flat plate end of the aluminum substrate through bolts. The utility model is advantageous in that a better connection property can be achieved; the consumption amount of copper material is reduced; the solution and producing process are unique, simple and cheap; mass production can be realized; the universality of on-site installation and utilization is ensured; the operation is simple, the producing cost is low and the popularization speed is fast.
Description
Technical field:
The utility model relates generally to the manufacture method of a kind of bolt type transformer with copper-aluminium bimetal binding clip, relates in particular to a kind of bolt type transformer copper-aluminium bimetal binding clip that adopts the manufacturing of explosive welding copper aluminum composite material.
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.
The utility model content:
The purpose of this utility model is exactly in order to remedy the defective of prior art, a kind of bolt type transformer copper-aluminium bimetal binding clip that adopts the manufacturing of explosive welding copper aluminum composite material 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 utility model is achieved through the following technical solutions;
The bolt type transformer copper-aluminium bimetal binding clip includes aluminium base, aluminium base one end surfaces explosive welding all-in-one-piece copper layer, and doubling inwardly of copper layer and middle one-tenth cylindrical shape; The aluminium base other end is dull and stereotyped, it is characterized in that: the flat board end of described aluminium base, the aluminum conductor pressing plate is installed, on the correspondence position of the flat board end of aluminium base, aluminum conductor pressing plate middle part the semi arch groove that plays the line ball effect is arranged respectively, be connected by bolt between the semi arch groove both sides of aluminum conductor pressing plate and the flat board end of aluminium base; Multiple copper one end of described aluminium base surface explosion welding, the doubling part of described aluminium base and copper has the connecting wire hole that connects copper conductor or copper wire post respectively, and the connecting wire hole inwall of copper layer is processed with the connection silking and bolt screws.
Described bolt type transformer copper-aluminium bimetal binding clip, it is characterized in that the welding manner between described aluminium base 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%, and its bond strength is not less than 55MPa.
Described bolt type transformer copper-aluminium bimetal binding clip, the thickness that it is characterized in that described copper layer is between 0.1mm-8mm; Its aluminium base thickness is 1mm-30mm.
Described bolt type transformer copper-aluminium bimetal binding clip is characterized in that the aluminum conductor end takes the aluminum conductor pressing plate to connect with the crimping of aluminium base bolt; The copper union end takes connecting wire hole and the crimping of bolt combination mode to connect.
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 the utility model indication, " the bolt type transformer copper-aluminium bimetal binding clip " that aluminium is changed, connected; Be a kind of employing explosive welding copper aluminum composite material, solve copper aluminium and connect " bolt type transformer copper-aluminium bimetal binding clip ", the manufacturing process and the method for the bolt type transformer usefulness copper-aluminium bimetal binding clip of itself copper aluminium connecting mode.
The utility model more relates to a kind of brand-new power circuit and the manufacturing process and the method for transformer copper-aluminium transition connection " bolt type transformer copper-aluminium bimetal binding clip " thereof.
Power circuit described in the utility model and transformer copper-aluminium transition thereof connect " bolt type transformer copper-aluminium bimetal binding clip " general version, main body is mostly to be the aluminium that conducts electricity very well, wherein play the connecting wire hole inwall blast that connects with transformer outlet copper tip and be compounded with the layer of copper layer, other upper and lower plate main bodys in end that play the effect of crimping aluminum conductor are aluminium matter; End two structural slabs of upper and lower plate all leave the punching hole of the effect of being connected and fixed.
The beneficial effects of the utility model:
It is tight that electric power copper aluminium in the utility model connects " bolt type transformer copper-aluminium bimetal binding clip " 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 structural representation of the present utility model.
Fig. 2 is the utility model plan structure figure.
Fig. 3 is the utility model cylindrical shape terminals cutaway views.
Embodiment:
The bolt type transformer copper-aluminium bimetal binding clip includes aluminium base 1, aluminium base 1 one end surfaces explosive welding all-in-one-piece copper layers 2, and copper layer 2 doubling inwardly and middle one-tenth cylindrical shape 3; Aluminium base 1 other end is dull and stereotyped, the flat board end 4 of aluminium base is equipped with aluminum conductor pressing plate 5, on the flat board end of aluminium base 1, the aluminum conductor pressing plate 5 middle part correspondence positions semi arch groove 6 that plays the line ball effect is arranged respectively, be connected by bolt 7 between semi arch groove 6 both sides of aluminum conductor pressing plate 5 and the flat board end of aluminium base 1; The doubling part of described aluminium base 1 and copper layer 2 has the connecting wire hole that connects copper conductor or copper wire post respectively, and the connecting wire hole inwall of copper layer is processed with the connection silking and bolt 8 screws.
Welding manner between aluminium base 1 and the copper layer 2 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%, and its bond strength is not less than 55MPa.
The thickness of copper layer 2 is between 0.1mm-8mm; Its aluminium base 1 thickness is 1mm-30mm.
As reaching the impact of performance that electric power copper aluminium described in the utility model connects " bolt type transformer copper-aluminium bimetal binding clip ", the technology problem that faces completely manifests, promptly effectively solve obtaining of described blast complex copper aluminum mother plate, and copper aluminum mother plate bolt type transformer the perfect of copper-aluminium bimetal binding clip later stage forming manufacture technique.
At first, be explosion weld process and the mother metal manufacture method of bolt type transformer with the compound mother metal of copper-aluminium bimetal binding clip copper aluminium:
In order to obtain the copper-aluminium transition composite performance of this excellent copper aluminum steel folder self, the utility model has adopted the technology of explosive welding, and the copper-aluminium transition welding that solves this copper aluminum steel 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 2000m/s～2200m/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:
■ ho---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
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 this copper aluminum steel 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, carry out post-production necessary, that be fit to for metallic explosive soldering composite material motherboard so and the selection of manufacturing process just seems very important.
Only the required later stage moulding process methods of moulding of " the bolt type transformer copper-aluminium bimetal binding clip " of the utility model indication 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; Processing technology, the utility model of the moulding later stage processing and forming operation of " the bolt type transformer copper-aluminium bimetal binding clip " of the utility model indication have been selected the technology of " metal superplastic formation ", and 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 utility model " bolt type transformer copper-aluminium bimetal binding clip ", motherboard is implemented " superplastic formation " preceding temperature the utility model of heating to be set in 220 ° of-380 ° of scopes and to 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 " bolt type transformer copper-aluminium bimetal binding clip " blank shape after the compression moulding, carry out the moulding manufacturing that necessary later stage intercepting, boring, assembling can have been finished whole " bolt type transformer copper-aluminium bimetal binding clip ".
Claims (4)
1. a copper aluminum explosion composite bolt type transformer copper-aluminium bimetal binding clip includes aluminium base, aluminium base one end surfaces explosive welding all-in-one-piece copper layer, and doubling inwardly of copper layer and middle one-tenth cylindrical shape; The aluminium base other end is dull and stereotyped, it is characterized in that: the flat board end of described aluminium base, the aluminum conductor pressing plate is installed, on the correspondence position of the flat board end of aluminium base, aluminum conductor pressing plate middle part the semi arch groove that plays the line ball effect is arranged respectively, be connected by bolt between the semi arch groove both sides of aluminum conductor pressing plate and the flat board end of aluminium base; Multiple copper one end of described aluminium base surface explosion welding, the doubling part of aluminium base and copper layer has the connecting wire hole that connects copper conductor or copper wire post respectively, and the connecting wire hole inwall of copper layer is processed with the connection silking and bolt screws.
2. copper aluminum explosion composite bolt type transformer copper-aluminium bimetal binding clip according to claim 1, it is characterized in that the welding manner between described aluminium base and the copper layer is to take the welding of metallic explosive welding manner to finish, bonding state is the metallurgical binding state, combination rate is 100%, and its bond strength is not less than 55MPa.
3. copper aluminum explosion composite bolt type transformer copper-aluminium bimetal binding clip according to claim 1, the thickness that it is characterized in that described copper layer is between 0.1mm-8mm; Its aluminium base thickness is 1mm-30mm.
4. copper aluminum explosion composite bolt type transformer copper-aluminium bimetal binding clip according to claim 1 is characterized in that the aluminum conductor end takes the aluminum conductor pressing plate to connect with the crimping of aluminium base bolt; The copper union end takes connecting wire hole and the crimping of bolt combination mode to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201810640U CN201859749U (en) | 2009-12-09 | 2009-12-09 | Copper-aluminum bimetal binding clip for copper-aluminum explosion composite bolt type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201810640U CN201859749U (en) | 2009-12-09 | 2009-12-09 | Copper-aluminum bimetal binding clip for copper-aluminum explosion composite bolt type transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201859749U true CN201859749U (en) | 2011-06-08 |
Family
ID=44105550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201810640U Expired - Fee Related CN201859749U (en) | 2009-12-09 | 2009-12-09 | Copper-aluminum bimetal binding clip for copper-aluminum explosion composite bolt type transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201859749U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2009
- 2009-12-09 CN CN2009201810640U patent/CN201859749U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110608 Termination date: 20141209 |
|
| EXPY | Termination of patent right or utility model |