CN101989686B - Explosive composite superplastic forming electric power irregularly-shaped copper and aluminum parallel groove clamp and manufacturing method thereof - Google Patents
Explosive composite superplastic forming electric power irregularly-shaped copper and aluminum parallel groove clamp and manufacturing method thereof Download PDFInfo
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- CN101989686B CN101989686B CN 200910144312 CN200910144312A CN101989686B CN 101989686 B CN101989686 B CN 101989686B CN 200910144312 CN200910144312 CN 200910144312 CN 200910144312 A CN200910144312 A CN 200910144312A CN 101989686 B CN101989686 B CN 101989686B
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Abstract
The invention discloses an explosive composite superplastic forming electric power irregularly-shaped copper and aluminum parallel groove clamp, which comprises an upper clamping piece substrate and a lower clamping piece substrate. The upper and lower clamping piece substrates are made of aluminum materials or aluminum alloy materials; two semicircular grooves are respectively formed on an involutory surface of the upper and lower clamping piece substrates; copper layers are coated on the surfaces of the two semicircular grooves of the upper and lower clamping piece substrates, or the copper layer is coated on the surface of the semicircular groove positioned on one side of the upper and lower clamping piece substrates, and other materials are not coated on the semicircular groove on the other side of the upper and lower clamping piece substrates; anti-skidding ridged grooves are formed on the surfaces of the copper layers of the semicircular grooves, and installation holes are formed on upper and lower clamping pieces; and the copper layers are in explosive welding connection with the upper and lower clamping piece substrates, a joint surface is in a metallurgical bonding state, the composite rate is 100 percent, and the bonding strength is more than or equal to 55MPa. In the explosive composite superplastic forming electric power irregularly-shaped copper and aluminum parallel groove clamp, fewer precious metal materials are used, so raw materials are saved effectively; and a bonding interface of copper and aluminum is in the metallurgical bonding state, so the problems of numerous adverse effects on equipment and lines due to high transition resistance when parts are manufactured in the conventional mode and the like are effectively solved.
Description
Technical field
The present invention relates to a kind of electric power copper-aluminium combination groove wire clamp field, be specifically related to a kind of special-shaped electric power copper-aluminium combination groove wire clamp field of the compound superplastic formation that explodes.
Background technology
Demand for special-shaped copper-aluminium combination groove wire clamp of electric power and copper-aluminium transition connection is present in the industry-by-industry field, as: industry fields such as electrolysis, chlor-alkali, oil, chemical industry, electric power and transmission of electricity, power transformation, power equipment.
Copper-aluminium transition connection material and the special-shaped copper-aluminium combination groove wire clamp of electric power accessory with electric power and power equipment industry requirement are example:
In traditional electric power and power equipment industry, it mainly is to realize through copper to aluminum adapter bar, copper-aluminium transition wire clip, copper al wiring terminal and copper-aluminium combination groove wire clamp that copper-aluminium transition connects.
Use traditional copper to aluminum adapter bar, copper-aluminium transition wire clip, copper al wiring terminal and copper-aluminium combination groove wire clamp manufacturing process, the copper aluminium connected mode of itself generally adopts flash welding, friction welding (FW), soldering and founding connection method to realize;
But; Usually this self copper aluminium connected mode composition surface is difficult to realize metallurgical binding completely; Percent defective is high, bond strength is low, copper material consumption is big, occurs phenomenon of rupture easily, and can cause shortcomings such as equipment and power transmission and transformation line transition resistance increase, failure rate height.
Existing copper-aluminum transition electric connection method is: adopt explosive welding to combine rolling mill practice to obtain between copper to aluminum adapter bar and the copper-aluminium transition wire clip copper aluminium sheet; Because the interface of explosive welding belongs to metallurgical binding between atom; Thereby its interface resistance is little of ignoring; This not only can save energy consumption and can also increase the service life, and has saved plurality of advantages such as copper material.
It is thus clear that the electric power copper-aluminium transition of selecting to adopt explosion welding method to make connects material and accessory, be at present known comparatively advanced methods.
Summary of the invention
The technical problem that the present invention will solve provides a kind of special-shaped electric power copper-aluminium combination groove wire clamp of the compound superplastic formation that explodes, and overcomes the defective that traditional flash welding, friction welding (FW), soldering and founding connection method are made prior art methods such as the special-shaped copper-aluminium combination groove wire clamp of electric power.
For addressing the above problem, the technical scheme of the utility model is:
A kind of special-shaped electric power copper-aluminium combination groove wire clamp of the compound superplastic formation that explodes includes upper and lower intermediate plate substrate, has two semi-circular grooves respectively on the described upper and lower intermediate plate substrate involutory surface, on the described upper and lower intermediate plate installing hole is arranged; The surface that it is characterized in that two semi-circular grooves of described upper and lower intermediate plate substrate all is coated with the copper layer; The surface that perhaps is positioned at the semi-circular grooves of upper and lower intermediate plate substrate one side is coated with the copper layer, and the opposite side semi-circular grooves does not coat other material; Adopt the explosive welding mode to be connected between described copper layer and the upper and lower intermediate plate substrate, the composition surface bonding state is a metallurgical state, and recombination rate is 100%, and bond strength is not less than 55MPa.
The special-shaped electric power copper-aluminium combination groove wire clamp of the compound superplastic formation of described blast is characterized in that the outer surface of described upper and lower intermediate plate substrate is coated with the copper layer respectively, adopts the explosive welding mode to be connected between described copper layer and the aluminum; Upper and lower intermediate plate substrate is aluminum or aluminum alloy materials.
The special-shaped electric power copper-aluminium combination groove wire clamp of the compound superplastic formation of described blast, the thickness that it is characterized in that described copper layer is between 0.1mm-2mm.
The special-shaped electric power copper-aluminium combination groove wire clamp of the compound superplastic formation of described blast is characterized in that the copper laminar surface of semi-circular grooves has anti-skidding stupefied groove.
The special-shaped electric power copper-aluminium combination groove wire clamp of the compound superplastic formation of described blast is characterized in that adopting between described copper layer and the upper and lower intermediate plate substrate explosive welding mode to be connected, and its particular content comprises following process:
(1), adopt the aluminum or aluminum alloy substrate as the parent metal plate, adopt the copper metallic plate as the plied timber plate, adopt steel plate as multiple layer liner plate;
(2), selected good multiple layer liner plate, parent metal plate and plied timber plate being carried out surface cleaning handles;
(3), to doing the processing that stops welding with the bonding multiple layer liner plate plate face of plied timber plate, promptly multiple layer liner plate plate face Continuous pressing device for stereo-pattern or use can not with other feasible means such as metal of the firm and hard existing solder bond of plied timber; Again the plied timber plate is bonded on the multiple layer liner plate;
(4), 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 and covers whole welding regions that need of multiple layer liner plate below, and in the medicine frame, evenly spreads explosive and detonator;
(5), whole welders such as described parent metal plate are placed on the sandy soil basis, and detonating primer carry out the explosive welding construction;
(6), remove on-the-spot residue, and the presentation quality inspection is carried out on the surface of the clad metal sheet after the welding;
(7), clad metal sheet is carried out Ultrasonic Nondestructive and mechanical property can detect, and clad metal sheet is carried out leveling handle;
(8), to the clad metal sheet behind the leveling heat-treat, cutting and punch forming;
The technological parameter of a plurality of local composite welding of explosive welding simultaneously of described metallic explosive welding is:
The explosive that uses when (1) confirming explosive welding is No. 2 rock dynamites, and detonation way adopts detonator or explosive rope end broadside to ignite;
(2) confirm parent metal plate and the spacing h that answers layer liner plate
0-be 4.5 (mm)
(3) confirm the explosive dosage W of the unit are of layer liner plate upper surface again
g-be 1.66 (g/cm
2)
(4) K
gThe constant relevant with explosive character and material is: 1.5
Metallic composite superplastic formation technology
" metal superplastic formation " must satisfy three primary conditions:
1. fine-grain tissue
2. certain deformation temperature
3. low rate of straining
We know, unreasonable or too high deformation temperature has very big influence for the faying face binding ability of explosive welding composite material, can cause the reduction even the inefficacy of the faying face binding ability of metallic composite;
According to " metal superplastic formation " technological standards; Need situation in conjunction with " compound, superplastic formation explodes---the special-shaped copper-aluminium combination groove wire clamp of electric power " composite material motherboard temperature rise; Motherboard is implemented " superplastic formation " preceding operation of heating; Heating, heat can be high-frequency induction heating, other effective means such as Frequency Induction Heating;
For the present invention " adopt explosive composite material, use superplastic formation technology to make---the special-shaped copper-aluminium combination groove wire clamp of electric power "; To motherboard implement " superplastic formation " preceding heat temperature we be set in 220 ° of-260 ° of scopes and carry out; This kind places the explosive composite material motherboard after the temperature rise after satisfying above condition; 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, through for the special-shaped copper-aluminium combination groove wire clamp blank shape after the compression moulding, carry out necessary simple intercepting of later stage, boring, assembling and can accomplish whole " compound, superplastic formation explode---the special-shaped copper-aluminium combination groove wire clamp of electric power " manufacturing.
Beneficial effect of the present invention:
The present invention has used rare metallic material still less, and at the part use composite transition metal that is necessary to connect transition position, has effectively practiced thrift raw material; The copper aluminium combination interface of the utility model is the metallurgical binding state, when realizing that copper-aluminium transition connects, and high, the problems such as many adverse effects of causing for equipment and circuit of self transition resistance when effectively having overcome this type of accessory of traditional approach manufacturing.
Description of drawings
Fig. 1 is the structural representation of the present invention's abnormity copper aluminium electric power wire clamp;
Fig. 2 is the local welding copper sheet layer sketch map of the present invention's abnormity copper aluminium electric power wire clamp.
Embodiment
Referring to Fig. 1; A kind of special-shaped electric power copper-aluminium combination groove wire clamp of the compound superplastic formation that explodes; Include upper and lower intermediate plate substrate 1,2; Upper and lower intermediate plate substrate 1,2 is aluminum or aluminum alloy materials, has two semi-circular grooves 3 respectively on upper and lower intermediate plate substrate 1,2 involutory surfaces, and the surface of two semi-circular grooves 3 of upper and lower intermediate plate substrate 1,2 all is coated with copper layer 4; The surface that perhaps is positioned at the semi-circular grooves of upper and lower intermediate plate substrate 1,2 one sides is coated with the copper layer, and the opposite side semi-circular grooves does not coat other material; The thickness of copper layer 4 is between 0.1mm～2mm, and copper layer 4 surface of semi-circular grooves 3 have anti-skidding stupefied groove, on the upper and lower intermediate plate 1,2 installing hole is arranged; Adopt the explosive welding mode to be connected between copper layer and the upper and lower intermediate plate substrate, the composition surface bonding state is a metallurgical state, and recombination rate is 100%, and bond strength is not less than 55MPa.
Adopt the explosive welding mode to be connected between copper layer and the upper and lower intermediate plate substrate, reprocess after being processed into clad metal sheet.
Its particular content comprises following process:
(1), adopt the aluminum or aluminum alloy substrate as the parent metal plate, adopt the copper metallic plate as the plied timber plate, adopt steel plate as multiple layer liner plate;
(2), selected good multiple layer liner plate, parent metal plate and plied timber plate being carried out surface cleaning handles;
(3), to doing the processing that stops welding with the bonding multiple layer liner plate plate face of plied timber plate, promptly multiple layer liner plate plate face Continuous pressing device for stereo-pattern or use can not with other feasible means such as metal of the firm and hard existing solder bond of plied timber; Again the plied timber plate is bonded on the multiple layer liner plate;
(4), 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 and covers whole welding regions that need of multiple layer liner plate below, and in the medicine frame, evenly spreads explosive and detonator;
(5), whole welders such as described parent metal plate are placed on the sandy soil basis, and detonating primer carry out the explosive welding construction;
(6), remove on-the-spot residue, and the presentation quality inspection is carried out on the surface of the clad metal sheet after the welding;
(7), clad metal sheet is carried out Ultrasonic Nondestructive and mechanical property can detect, and clad metal sheet is carried out leveling handle;
(8), to the clad metal sheet behind the leveling heat-treat, cutting and punch forming;
The a plurality of local complex welding methods of explosive welding simultaneously of described metallic explosive welding is characterized in that: the technological parameter of a plurality of local composite welding of explosive welding simultaneously of described metallic explosive welding is:
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 widely used 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:
■ h
0---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 NE BY ENERGY TRANSFER of explosive welding (EW), absorption, conversion and distribution are to collide by the high speed impact of cladding plate and substrate through the gap to accomplish 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.
5, technological process
Because enterprise on the basis of the explosive welding of studying in the past, has accumulated a large amount of experiences and data, the technology basis has been laid in the smooth implementation of project and realization for this reason.In test, we only need through changing kind, the density of explosive, and the dosage of unit are detects Changing Pattern between product quality and these parameters after compound.Another content is exactly that variation has taken place the initial setting angle of working as compound plate, and variation has taken place for base, compound plate spacing, to the influence of compound back product performance index, finds out wherein parameter and performance variation law, can successfully produce required motherboard.
Claims (3)
1. the special-shaped electric power copper-aluminium combination groove wire clamp of the compound superplastic formation of blast includes upper and lower intermediate plate substrate, has two semi-circular grooves respectively on the described upper and lower intermediate plate substrate involutory surface, on the described upper and lower intermediate plate substrate installing hole is arranged; The surface that it is characterized in that two semi-circular grooves of described upper and lower intermediate plate substrate all is coated with the copper layer; The surface that perhaps is positioned at the semi-circular grooves of upper and lower intermediate plate substrate one side is coated with the copper layer, and the opposite side semi-circular grooves does not coat other material; Adopt the explosive welding mode to be connected between described copper layer and the upper and lower intermediate plate substrate, the composition surface bonding state is a metallurgical state, and recombination rate is 100%, and bond strength is not less than 55MPa;
Adopt the explosive welding mode to be connected between described copper layer and the upper and lower intermediate plate substrate, its particular content comprises following process:
(1), adopt the aluminum or aluminum alloy substrate as the parent metal plate, adopt the copper metallic plate as the plied timber plate, adopt steel plate as multiple layer liner plate;
(2), selected good multiple layer liner plate, parent metal plate and plied timber plate being carried out surface cleaning handles;
(3), to doing the processing that stops welding with the bonding multiple layer liner plate plate face of plied timber plate, promptly multiple layer liner plate plate face Continuous pressing device for stereo-pattern or use can not with the metal of the firm and hard existing solder bond of plied timber; Again the plied timber plate is bonded on the multiple layer liner plate;
(4), 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 and covers whole welding regions that need of multiple layer liner plate below, and in the medicine frame, evenly spreads explosive and detonator;
(5), will place on the sandy soil basis by the whole welder that described parent metal plate, plied timber plate, a multiple layer liner plate, medicine frame and explosive and detonator constitute, and detonating primer carries out the explosive welding construction;
(6), remove on-the-spot residue, and the presentation quality inspection is carried out on the surface of the clad metal sheet after the welding;
(7), clad metal sheet carried out Ultrasonic Nondestructive and mechanical property detect, and clad metal sheet is carried out leveling handles;
(8), to the clad metal sheet behind the leveling heat-treat, cutting and punch forming;
(9) technological parameter of the composite welding of a plurality of local explosive weldings simultaneously of metallic explosive welding is:
A, the explosive that uses when confirming explosive welding are No. 2 rock dynamites, and detonation way adopts cap sensitive;
B, confirm the spacing h of parent metal plate and multiple layer liner plate
0Be 4.5mm;
The explosive dosage W of the unit are of c, definite multiple layer liner plate upper surface
gBe 1.66g/cm
2
D, W
gThe constant relevant with explosive character and material is: 1.5;
The dose W of unit are wherein
gComputing formula do
In the formula:
■ ρ
1---cladding plate density (g/cm
3)
■ δ
1---cladding plate thickness (mm)
■ K
g---metallic explosive welding empirical coefficient.
2. the special-shaped electric power copper-aluminium combination groove wire clamp of the compound superplastic formation of blast according to claim 1, the thickness that it is characterized in that described copper layer is between 0.1mm-2mm.
3. the special-shaped electric power copper-aluminium combination groove wire clamp of the compound superplastic formation of blast according to claim 1 is characterized in that the copper laminar surface of semi-circular grooves has anti-skidding stupefied groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910144312 CN101989686B (en) | 2009-07-30 | 2009-07-30 | Explosive composite superplastic forming electric power irregularly-shaped copper and aluminum parallel groove clamp and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910144312 CN101989686B (en) | 2009-07-30 | 2009-07-30 | Explosive composite superplastic forming electric power irregularly-shaped copper and aluminum parallel groove clamp and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101989686A CN101989686A (en) | 2011-03-23 |
| CN101989686B true CN101989686B (en) | 2012-12-19 |
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|---|---|---|---|
| CN 200910144312 Expired - Fee Related CN101989686B (en) | 2009-07-30 | 2009-07-30 | Explosive composite superplastic forming electric power irregularly-shaped copper and aluminum parallel groove clamp and manufacturing method thereof |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329287A (en) * | 2015-06-30 | 2017-01-11 | 江苏苏源电气有限公司 | Processing method of copper-aluminum composite special-shaped parallel groove clamp |
| CN111613951B (en) * | 2020-04-27 | 2021-07-27 | 宁波奉欣电力金具实业股份有限公司 | Parallel groove clamp processing equipment with high matching degree |
| CN114054924B (en) * | 2021-12-17 | 2022-12-23 | 四川攀钢嘉德精工科技有限公司 | Welding process for Q-shaped auxiliary frame longitudinal beam for heavy-duty automobile |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2901725A (en) * | 1954-12-13 | 1959-08-25 | Fargo Mfg Co Inc | Line splice clamp |
| CN2100036U (en) * | 1991-04-11 | 1992-03-25 | 武汉电缆附件厂 | Wire clip for copper-aluminium combination groove in alloy welding process |
| EP1465292A1 (en) * | 2003-04-01 | 2004-10-06 | Weidmüller Interface GmbH & Co. KG | Terminal clamp , especially connection clamp |
| CN2881998Y (en) * | 2006-01-06 | 2007-03-21 | 郑松存 | Copper aluminium connection cable clamp |
| CN201282207Y (en) * | 2008-10-30 | 2009-07-29 | 淮北市钛沽金属复合材料有限公司 | Metal explosive welding copper aluminum composite electric force connecting clamp |
-
2009
- 2009-07-30 CN CN 200910144312 patent/CN101989686B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2901725A (en) * | 1954-12-13 | 1959-08-25 | Fargo Mfg Co Inc | Line splice clamp |
| CN2100036U (en) * | 1991-04-11 | 1992-03-25 | 武汉电缆附件厂 | Wire clip for copper-aluminium combination groove in alloy welding process |
| EP1465292A1 (en) * | 2003-04-01 | 2004-10-06 | Weidmüller Interface GmbH & Co. KG | Terminal clamp , especially connection clamp |
| CN2881998Y (en) * | 2006-01-06 | 2007-03-21 | 郑松存 | Copper aluminium connection cable clamp |
| CN201282207Y (en) * | 2008-10-30 | 2009-07-29 | 淮北市钛沽金属复合材料有限公司 | Metal explosive welding copper aluminum composite electric force connecting clamp |
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| Publication number | Publication date |
|---|---|
| CN101989686A (en) | 2011-03-23 |
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