CN104057200A - Copper-aluminum explosion composite plate adapter - Google Patents
Copper-aluminum explosion composite plate adapter Download PDFInfo
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- CN104057200A CN104057200A CN201410303527.1A CN201410303527A CN104057200A CN 104057200 A CN104057200 A CN 104057200A CN 201410303527 A CN201410303527 A CN 201410303527A CN 104057200 A CN104057200 A CN 104057200A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/06—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of high energy impulses, e.g. magnetic energy
- B23K20/08—Explosive welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/22—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded
- B23K20/233—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded without ferrous layer
- B23K20/2333—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded without ferrous layer one layer being aluminium, magnesium or beryllium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/24—Preliminary treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/10—Aluminium or alloys thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/12—Copper or alloys thereof
Abstract
A copper-aluminum explosion composite plate adapter relates to a metal explosion composite plate, in particular to a manufacturing method for the copper-aluminum explosion composite plate adapter. The method includes the ten steps of a method adopting explosive welding combination between dissimilar metals (copper and aluminum) and a method adopting a copper-aluminum explosion composite plate to produce the adapter, explosive welding combination is adopted between copper and aluminum, the composite interface of the copper-aluminum explosion composite plate adapter belongs to interatomic metallurgical bonding, the interface resistivity is low, the combination rate is 100 percent, the bonding strength is not lower than 100MPa, and thereby the problems of like parts manufactured by the conventional process, i.e. high self transition resistance, low joint strength, easy breakage and a great deal of adverse affection on equipment and circuits, are effectively overcome. The invention reduces copper consumption by 80 to 90 percent, thus saving the scarce and valuable resource, the cost is low, the rate of finished products is high, the fault rate is decreased, the service life is prolonged, and the comprehensive economic benefit is remarkable. The copper-aluminum explosion composite plate adapter can be widely popularized and applied to power transmission, power transformation and power equipment and in industries and fields, such as electrolysis, chlor-alkali petroleum and chemical.
Description
Technical field
The present invention relates to copper al blasting composite plate, especially the manufacture method of copper al blasting composite plate transit joint.
Background technology
The situation that substitutes copper material along with aluminium in power equipment is more and more, occurs that copper aluminium Contact also significantly increases.These copper aluminium contact positions can cause the unfavorable conditions such as loose contact, heating, sparking, resistance increase because of corrosion, increase maintenance frequency for this reason, affect equipment safety operation so that lead to equipment breakdown.
In electric power and power equipment industry, it is mainly to realize by copper to aluminum adapter bar, copper-aluminium transition wire clip, copper aluminum connecting terminal and cuprum aluminum wire clamp that traditional copper-aluminium transition connects.And in the manufacturing process of these traditional copper to aluminum adapter bar that use, copper-aluminium transition wire clip, copper aluminum connecting terminal and cuprum aluminum wire clamp etc., the copper aluminium connected mode of itself, by traditional handicraft level, can only adopt cold rolling, flash welding, friction welding (FW), soldering and founding connection method to realize, but, these traditional copper aluminium connected mode composition surfaces are difficult to realize metallurgical binding completely, percent defective is high, bond strength is low, copper material consumption is large, easily there is phenomenon of rupture, and can cause the shortcomings such as equipment and power transmission and transformation line transition resistance increase, fault rate height.
What the applicant researched and developed can effectively solve above-mentioned these defects with copper al blasting welding composite plate making cuprum aluminum transition joint.Because the interface of its explosive welding of copper al blasting composite plate that employing copper al blasting welding procedure obtains belongs to metallurgical binding between atom, thereby its interface resistance is little of negligible, performance is highly stable, and bond strength is high, copper material consumption is little, improves service life, reduces fault rate.China's copper resource lacks relatively, develop a kind of copper al blasting welding composite plate, selection adopts copper al blasting welding composite plate to manufacture electric power and required copper-aluminium transition connecting material and the accessory of power equipment again, and saving copper resource is current the most advanced manufacture method, have great economy is worth.
According to retrieval, domestic not yet have a patent application identical with the present invention.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of manufacture method that adopts the copper al blasting composite plate making copper al blasting composite plate transit joint of copper al blasting welding composite molding.
Technical scheme of the present invention is: copper al blasting composite plate transit joint of the present invention comprises the manufacture method of the copper al blasting composite plate making copper al blasting composite plate transit joint that adopts copper al blasting welding composite molding, and described manufacture method comprises following ten steps:
Described step 1 material purchases: compound plate is 99.9% technical pure copper coin, and its thickness is 1.5mm-20mm; Substrate is 99.7% commercial pure Al sheet, and its thickness is 6mm-100mm; The Thickness Ratio of copper coin and aluminium sheet is 1:4, or changes raw material Thickness Ratio according to the proportion requirement of copper-aluminum composite board material; Substrate length * wide 500mm * the 400mm that is of a size of, compound plate copper coin respectively adds the cutting surplus of 4 mm on length and four limits of width;
Described step 2 removing surface: use automatic abrasive belt formula sander to remove the greasy dirt of copper, aluminium plate composite surface, impurity, oxide layer etc., make substrate and compound plate expose clean contact surface; After cleaning is clean, reply substrate, compound plate carry out necessary smoothing, make unevenness≤2 mm/m of substrate, compound plate, during with assurance explosive welding, can accurately control welded gaps, substrate, compound plate surface ought to be carried out by 24h before implementing explosive welding, otherwise secondary oxidation can occur sheet material;
Described step 3 explosive welding:
1. explosive welding explosive is prepared: adopting explosion velocity is that 3600 m/s powdery emulsifying explosive processing industry salt are prepared explosive welding explosive, its explosive/industrial table salt ratio is 60:40, both evenly mix, explosion velocity is 2300 m/s left and right, the whole process of welding is to complete within the time of several to dozens of microseconds, gases at high pressure between two plates are when discharging at a high speed, rub mutually with the inner surface between two plates, a large amount of frictional heats will be produced, air between two plates, compressed due to the rapid whereabouts of compound plate, to produce Heat of Compressed Air, these heats are all the mechanical energy that explosive discharges, by these two kinds of modes, changed into heat energy, fuel factor between two plates, to completing welding, played vital effect, if explosion velocity too high can affect between base compound plate the air venting time too short, cause failure welding, so add industrial table salt rationally to reduce explosion velocity,
2. with the copper sheet of 0.15-0.2 mm thickness, make the metal supporting frames that 6mm is high standby;
3. with loading machine heap, establish 50 centimeters of high forts, manually with spade, carry out fort smooth;
4. aluminium sheet is placed on the fort after smooth, and on aluminium sheet, is evenly arranged prefabricated red copper bracing frame;
5. copper coin is lain on red copper bracing frame, and guarantee all reserved cutting overlap surpluses of copper coin length and width direction;
6. after carrying out above-mentioned operation, enter powder charge process, the loose explosive of removing caking is slowly laid on copper coin lentamente, with medicine scraping plate, strike off, measure explosive thickness and guarantee the design web left and right at 30mm; Middle part at copper coin arranges fire point, on fire point, place the powdery RDX of diameter≤30mm or TNT explosive a little, as detonating charge;
7. finally carry out quick-fried front inspection, whether the gap of reexamining substrate and compound plate meets design requirement, warning is withdrawn to safety area, implemented to unrelated person, and dynamiter checks the circuit that detonates, and confirms after unobstructed to connect electric cap again, be fixed in the fire point of compound plate, dynamiter withdraws scene, sends early warning signal, finally by shotfiring safety operational procedure, detonates, explosion is confirmed after safety, the composite plate that just can enter site inspection postwelding;
Described step 4 ultrasonic examination: will carry out welding quality inspection after the welding of copper al blasting, with the probe of supersonic detector, copper al blasting composite plate is carried out to ultrasonic examination inspection, emphasis checks that fuze action zone, long slab two ends, surrounding are prone to the region of weld defect, determine not recombination region, so that follow-up, mend by replacing a damaged part, built-up welding;
Described step 5 heat treatment: the copper al blasting composite surface after explosive welding is qualified is cleaned out, entering heat-treatment furnace heat-treats, to eliminate the welding stress of explosive welding land, adopt 300 ℃-350 ℃ to heat, warm-up time is 1h, then cooling heat treatment normalizing process in air;
Described step 6 smoothing: copper al blasting composite plate is after heat treatment carried out mechanical type smoothing with seven roller levelling machines to sheet material, unevenness≤2 mm/m;
Described step 7 twice ultrasonic wave inspection: the copper al blasting composite plate after heat treatment and smoothing is carried out to a ultrasonic examination again, can reach 100% combination, its bond strength is more than mechanical property detects shear strength 150MPa, more than peeling strength 120MPa, confirm to reach the composite quality of expection;
Described step 8 cutting: due to edge effect, the edge adhesion of copper al blasting composite plate is poor, therefore, copper al blasting composite plate after smoothing is used sawing machine width both sides respectively to cut 15mm, length direction is respectively cut 50mm end to end, guarantee that whole plate face has stronger adhesion, make final copper al blasting composite plate reach delivery gauge;
Described step 9 polishing grinding: compound good copper al blasting composite surface is carried out to polishing, scale removal and surface damage with water mill formula automatic sander;
Described step 10 machining: finished product copper al blasting composite plate is carried out to machining, be processed into the copper al blasting composite plate transit joint of the required all size of client, getting finished product height is Amm copper al blasting composite plate, with sawing machine, finished product copper al blasting composite plate is cut into the strip plate that width is B+(0.20-0.30) mm, with milling machine, this strip plate is milled into the workpiece that thickness is C+(0.10-0.20) mm again, finally with grinding machine by the width of the workpiece, thickness four sides grinding puts in place, make the copper al blasting composite plate transit joint of growth * wide * thick=A * B * C.
The invention has the beneficial effects as follows:
1. copper al blasting composite plate transit joint of the present invention is the copper al blasting composite plate transit joint that adopts the copper al blasting composite plate making of copper al blasting welding procedure production, adopting the interface of its explosive welding of copper al blasting composite plate of copper al blasting welding advanced technologies production is metallurgical binding between atom, thereby its interface resistance is little of negligible, performance is highly stable, and bond strength is high, percent defective is less than 2%, its Cu and Al combination intensity of copper al blasting composite plate transit joint that adopts copper al blasting composite plate to make is high, stable performance, improve service life, reduce fault rate, effectively solved employing traditional handicraft as cold rolling, flash welding, friction welding (FW), it is high that soldering and founding connection method are made the existing percent defective of copper fasten aluminium, Cu and Al combination face bond strength is low, easy fracture, loose contact, heating, sparking, resistance increases, the defects such as fault rate height.
2. copper al blasting composite plate transit joint of the present invention adopts advanced technologies making, the copper material of explosive welding to consume little, than making by traditional handicraft, copper material consumption reduces to original 10%-20%, saves copper resource, and China's copper resource relatively lacks the present invention and has great economy value.
3. Explosive Welding Composite Plates transit joint of the present invention can meet the needs of power industry, a large amount of copper-aluminium transition connecting materials of power equipment and accessory, and market prospects are wide, good in economic efficiency.
The present invention can extensively promote the use in industry fields such as electric power transmission, power transformation, power equipment and electrolysis, chlor-alkali, oil, chemical industry.
The specific embodiment
The invention will be further described to utilize embodiment.
Copper al blasting composite plate transit joint of the present invention has sizes specification:
Embodiment 1, and copper aluminium Thickness Ratio is 1:4, the preparation method of copper al blasting composite plate transit joint length * wide * thick=100 * 80 * 12
Step 1 material purchases: compound plate is 99.9% technical pure copper coin, 508mm * 408mm * 20mm; Substrate is 99.7% commercial pure Al sheet, 500mm * 400mm * 80 mm, and compound plate copper coin respectively adds the cutting surplus of 4 mm on length and four limits of width;
Step 2 removing surface: 24h before implementing the welding of copper al blasting, use automatic abrasive belt formula sander to remove the greasy dirt of copper, aluminium plate composite surface, impurity, oxide layer etc., make substrate and compound plate expose clean contact surface; After cleaning cleaning, substrate, compound plate are carried out to necessary smoothing, make unevenness≤2 mm/m of substrate, compound plate;
Step 3 explosive welding:
1. explosive welding explosive is prepared: adopting explosion velocity is that 3600 m/s powdery emulsifying explosive processing industry salt are prepared explosive welding explosive, and its explosive/industrial table salt ratio is 60:40, both evenly mix, explosion velocity is 2300 m/s left and right;
2. with the copper sheet of 0.15-0.2 mm thickness, make the metal supporting frames that 6mm is high standby;
3. with loading machine heap, establish 50 centimeters of high forts, manually with spade, carry out fort smooth;
4. aluminium sheet is placed on the fort after smooth, and on aluminium sheet, is evenly arranged prefabricated red copper bracing frame;
5. copper coin is lain on red copper bracing frame, and guarantee all reserved cutting overlap surpluses of copper coin length and width direction;
6. after carrying out above-mentioned operation, enter powder charge process, the loose explosive of removing caking is slowly laid on copper coin, with medicine scraping plate, strike off, measure explosive thickness and guarantee the design web left and right at 45mm; Middle part at copper coin arranges fire point, on fire point, place the powdery hexogen of diameter≤30mm or TNT explosive a little, as detonating charge;
7. finally carry out quick-fried front inspection, whether the gap of reexamining substrate and compound plate meets design requirement, warning is withdrawn to safety area, implemented to unrelated person, and dynamiter checks the circuit that detonates, and confirms after unobstructed to connect electric cap again, be fixed in the fire point of compound plate, dynamiter withdraws scene, sends early warning signal, finally by shotfiring safety operational procedure, detonates, explosion is confirmed after safety, the composite plate that just can enter site inspection postwelding;
Step 4 ultrasonic examination: with the probe of supersonic detector, copper al blasting composite plate is carried out to ultrasonic examination inspection after the welding of copper al blasting, emphasis checks that fuze action zone, long slab two ends, surrounding are prone to the region of weld defect, determine not recombination region, so that follow-up, mend by replacing a damaged part, built-up welding;
Step 5 heat treatment: the copper al blasting composite surface after explosive welding is qualified is cleaned out, enters heat-treatment furnace and adopts 300 ℃-350 ℃ to heat, and warm-up time is 1h, then cooling heat treatment normalizing process in air;
Step 6 smoothing: copper al blasting composite plate is after heat treatment carried out mechanical type smoothing with seven roller levelling machines to sheet material, unevenness≤2 mm/m;
Step 7 twice ultrasonic wave inspection: the copper al blasting composite plate after heat treatment and smoothing is carried out to a ultrasonic examination again, can reach 100% combination, its bond strength detects shear strength 186MPa through mechanical property, peeling strength 135MPa, and confirmation reaches the composite quality of expection;
Step 8 cutting: the edge adhesion of copper al blasting composite plate is poor, therefore, the copper al blasting composite plate after smoothing is used sawing machine width both sides respectively to cut 15mm, and length direction is respectively cut 50mm end to end, guarantees that whole composite plate face has stronger adhesion;
Step 9 polishing grinding: with water mill formula automatic sander, compound good copper al blasting composite surface is carried out to polishing, scale removal and surface damage, obtain finished product copper al blasting composite plate;
Step 10 machining: getting finished product height A is 100mm copper al blasting composite plate, with sawing machine, finished product copper al blasting composite plate is cut into the strip plate that width B is 80+(0.20-0.30) mm, with milling machine, this strip plate is milled into the workpiece that thickness C is 12+(0.10-0.20) mm again, finally with grinding machine, the width of the workpiece, thickness four sides grinding are put in place, make the copper al blasting composite plate transit joint of growth * wide * thick=100 * 80 * 12.
Embodiment 2, and copper aluminium Thickness Ratio is 1:5, the preparation method of copper al blasting composite plate transit joint length * wide * thick=60 * 40 * 8
Step 1 material purchases: compound plate is 99.9% technical pure copper coin, 520mm * 420mm * 10mm; Substrate is 99.7% commercial pure Al sheet, 500mm * 400mm * 50 mm, and compound plate copper coin respectively adds the cutting surplus of 10mm on length and four limits of width;
Step 2 removing surface: 24h before implementing the welding of copper al blasting, use automatic abrasive belt formula sander to remove the greasy dirt of copper, aluminium plate composite surface, impurity, oxide layer etc., make substrate and compound plate expose clean contact surface; After cleaning cleaning, substrate, compound plate are carried out to necessary smoothing, make unevenness≤2 mm/m of substrate, compound plate;
Step 3 explosive welding:
1. explosive welding explosive is prepared: adopting explosion velocity is that 3600 m/s powdery emulsifying explosive processing industry salt are prepared explosive welding explosive, and its explosive/industrial table salt ratio is 60:40, both evenly mix, explosion velocity is 2300 m/s left and right;
2. with the copper sheet of 0.15-0.2 mm thickness, make the metal supporting frames that 6mm is high standby;
3. with loading machine heap, establish 50 centimeters of high forts, manually with spade, carry out fort smooth;
4. aluminium sheet is placed on the fort after smooth, and on aluminium sheet, is evenly arranged prefabricated red copper bracing frame;
5. copper coin is lain on red copper bracing frame, and guarantee all reserved cutting overlap surpluses of copper coin length and width direction;
6. after carrying out above-mentioned operation, enter powder charge process, the loose explosive of removing caking is slowly laid on copper coin, with medicine scraping plate, strike off, measure explosive thickness and guarantee the design web left and right at 35mm; Middle part at copper coin arranges fire point, on fire point, place the powdery hexogen of diameter≤30mm or TNT explosive a little, as detonating charge;
7. finally carry out quick-fried front inspection, whether the gap of reexamining substrate and compound plate meets design requirement, warning is withdrawn to safety area, implemented to unrelated person, and dynamiter checks the circuit that detonates, and confirms after unobstructed to connect electric cap again, be fixed in the fire point of compound plate, dynamiter withdraws scene, sends early warning signal, finally by shotfiring safety operational procedure, detonates, explosion is confirmed after safety, the composite plate that just can enter site inspection postwelding;
Step 4 ultrasonic examination: with the probe of supersonic detector, copper al blasting composite plate is carried out to ultrasonic examination inspection after the welding of copper al blasting, emphasis checks that fuze action zone, long slab two ends, surrounding are prone to the region of weld defect, determine not recombination region, so that follow-up, mend by replacing a damaged part, built-up welding;
Step 5 heat treatment: the copper al blasting composite surface after explosive welding is qualified is cleaned out, enters heat-treatment furnace and adopts 300 ℃-350 ℃ to heat, and warm-up time is 1h, then cooling heat treatment normalizing process in air;
Step 6 smoothing: copper al blasting composite plate is after heat treatment carried out mechanical type smoothing with seven roller levelling machines to sheet material, unevenness≤2 mm/m;
Step 7 twice ultrasonic wave inspection: the copper al blasting composite plate after heat treatment and smoothing is carried out to a ultrasonic examination again, can reach 100% combination, its bond strength detects shear strength 162MPa through mechanical property, peeling strength 126MPa, and confirmation reaches the composite quality of expection;
Step 8 cutting: the edge adhesion of copper al blasting composite plate is poor, therefore, the copper al blasting composite plate after smoothing is used sawing machine width both sides respectively to cut 15mm, and length direction is respectively cut 50mm end to end, guarantees that whole composite plate face has stronger adhesion;
Step 9 polishing grinding: with water mill formula automatic sander, compound good copper al blasting composite surface is carried out to polishing, scale removal and surface damage, obtain finished product copper al blasting composite plate;
Step 10 machining: getting finished product height A is 60mm copper al blasting composite plate, with sawing machine, finished product copper al blasting composite plate is cut into the strip plate that width B is 40+(0.20-0.30) mm, with milling machine, this strip plate is milled into the workpiece that thickness C is 8+(0.10-0.20) mm again, finally with grinding machine, the width of the workpiece, thickness four sides grinding are put in place, make the copper al blasting composite plate transit joint of growth * wide * thick=60 * 40 * 8.
Claims (1)
1. a copper al blasting composite plate transit joint, it is characterized in that: this copper al blasting composite plate transit joint comprises the manufacture method of the copper al blasting composite plate making copper al blasting composite plate transit joint that adopts copper al blasting welding composite molding, and described manufacture method comprises following ten steps:
Described step 1 material purchases: compound plate is 99.9% technical pure copper coin, and its thickness is 1.5mm-20mm; Substrate is 99.7% commercial pure Al sheet, and its thickness is 6mm-100mm; The Thickness Ratio of copper coin and aluminium sheet is 1:4, or changes raw material Thickness Ratio according to the proportion requirement of copper-aluminum composite board material; Substrate length * wide 500mm * the 400mm that is of a size of, compound plate copper coin respectively adds the cutting surplus of 4 mm on length and four limits of width;
Described step 2 removing surface: use automatic abrasive belt formula sander to remove the greasy dirt of copper, aluminium plate composite surface, impurity, oxide layer etc., make substrate and compound plate expose clean contact surface; After cleaning is clean, reply substrate, compound plate carry out necessary smoothing, make unevenness≤2 mm/m of substrate, compound plate, during with assurance explosive welding, can accurately control welded gaps, substrate, compound plate surface ought to be carried out by 24h before implementing explosive welding, otherwise secondary oxidation can occur sheet material;
Described step 3 explosive welding:
1. explosive welding explosive is prepared: adopting explosion velocity is that 3600 m/s powdery emulsifying explosive processing industry salt are prepared explosive welding explosive, and its explosive/industrial table salt ratio is 60:40, both evenly mix, explosion velocity is 2300 m/s left and right;
2. with the copper sheet of 0.15-0.2 mm thickness, make the metal supporting frames that 6mm is high standby;
3. with loading machine heap, establish 50 centimeters of high forts, manually with spade, carry out fort smooth;
4. aluminium sheet is placed on the fort after smooth, and on aluminium sheet, is evenly arranged prefabricated red copper bracing frame;
5. copper coin is lain on red copper bracing frame, and guarantee all reserved cutting overlap surpluses of copper coin length and width direction;
6. after carrying out above-mentioned operation, enter powder charge process, the loose explosive of removing caking is slowly laid on copper coin lentamente, with medicine scraping plate, strike off, measure explosive thickness and guarantee the design web left and right at 30mm; Middle part at copper coin arranges fire point, on fire point, place the powdery RDX of diameter≤30mm or TNT explosive a little, as detonating charge;
7. finally carry out quick-fried front inspection, whether the gap of reexamining substrate and compound plate meets design requirement, warning is withdrawn to safety area, implemented to unrelated person, and dynamiter checks the circuit that detonates, and confirms after unobstructed to connect electric cap again, be fixed in the fire point of compound plate, dynamiter withdraws scene, sends early warning signal, finally by shotfiring safety operational procedure, detonates, explosion is confirmed after safety, the composite plate that just can enter site inspection postwelding;
Described step 4 ultrasonic examination: will carry out welding quality inspection after the welding of copper al blasting, with the probe of supersonic detector, copper al blasting composite plate is carried out to ultrasonic examination inspection, emphasis checks that fuze action zone, long slab two ends, surrounding are prone to the region of weld defect, determine not recombination region, so that follow-up, mend by replacing a damaged part, built-up welding;
Described step 5 heat treatment: the copper al blasting composite surface after explosive welding is qualified is cleaned out, entering heat-treatment furnace heat-treats, to eliminate the welding stress of explosive welding land, adopt 300 ℃-350 ℃ to heat, warm-up time is 1h, then cooling heat treatment normalizing process in air;
Described step 6 smoothing: copper al blasting composite plate is after heat treatment carried out mechanical type smoothing with seven roller levelling machines to sheet material, unevenness≤2 mm/m;
Described step 7 twice ultrasonic wave inspection: the copper al blasting composite plate after heat treatment and smoothing is carried out to a ultrasonic examination again, can reach 100% combination, its bond strength is more than mechanical property detects shear strength 150MPa, more than peeling strength 120MPa, confirm to reach the composite quality of expection;
Described step 8 cutting: due to edge effect, the edge adhesion of copper al blasting composite plate is poor, therefore, copper al blasting composite plate after smoothing is used sawing machine width both sides respectively to cut 15mm, length direction is respectively cut 50mm end to end, guarantee that whole plate face has stronger adhesion, make final copper al blasting composite plate reach delivery gauge;
Described step 9 polishing grinding: compound good copper al blasting composite surface is carried out to polishing, scale removal and surface damage with water mill formula automatic sander;
Described step 10 machining: finished product copper al blasting composite plate is carried out to machining, be processed into the copper al blasting composite plate transit joint of the required all size of client, getting finished product height is Amm copper al blasting composite plate, with sawing machine, finished product copper al blasting composite plate is cut into the strip plate that width is B+(0.20-0.30) mm, with milling machine, this strip plate is milled into the workpiece that thickness is C+(0.10-0.20) mm again, finally with grinding machine by the width of the workpiece, thickness four sides grinding puts in place, make the copper al blasting composite plate transit joint of growth * wide * thick=A * B * C.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104708238A (en) * | 2015-02-11 | 2015-06-17 | 沪东中华造船(集团)有限公司 | Method for preventing laying of steel and aluminum composite connector |
| CN104741766A (en) * | 2015-04-08 | 2015-07-01 | 湖北金兰特种金属材料有限公司 | Method and device for welding and rapid arrangement of explosive |
| CN104741767A (en) * | 2015-04-08 | 2015-07-01 | 湖北金兰特种金属材料有限公司 | Explosive pushing cart for explosive welding and arrangement |
| CN113478064A (en) * | 2021-07-20 | 2021-10-08 | 西安天力金属复合材料股份有限公司 | Explosive welding method for copper-aluminum-copper three-layer composite board |
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| CN104741767A (en) * | 2015-04-08 | 2015-07-01 | 湖北金兰特种金属材料有限公司 | Explosive pushing cart for explosive welding and arrangement |
| CN113478064A (en) * | 2021-07-20 | 2021-10-08 | 西安天力金属复合材料股份有限公司 | Explosive welding method for copper-aluminum-copper three-layer composite board |
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