CN104002004B - A kind of thick sheet metal large area docking method for welding - Google Patents
A kind of thick sheet metal large area docking method for welding Download PDFInfo
- Publication number
- CN104002004B CN104002004B CN201410274005.3A CN201410274005A CN104002004B CN 104002004 B CN104002004 B CN 104002004B CN 201410274005 A CN201410274005 A CN 201410274005A CN 104002004 B CN104002004 B CN 104002004B
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- Prior art keywords
- welding
- metallic plate
- pieces
- large area
- plate
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Classifications
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0004—Resistance soldering
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
-
- 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
- B23K2101/185—Tailored blanks
Abstract
A kind of thick sheet metal large area docking method for welding is realized by following steps: in one rectangular indentation of junction processing of metallic plate brazing surface with metallic plate upper surface, form a U-type groove when making two pieces metallic plate dock；Between two pieces metallic plate brazing surface, place foil-like cored solder, use fixture to make two pieces metallic plate combine closely with foil-like cored solder, preset cored solder in U-type groove；Being placed in by the weld seam of two metallic plates after clamping between the power-on and power-off pole plate of resistance welder, contact electrode covers whole solder joint, and solder joint is with to contact electrode contact surface vertical；Resistance welder power-on and power-off pole plate pressurizes, and electrified regulation is the full weld seam of preset cored solder fusing in making foil-like cored solder and U-type groove, stops heating and also continues to keep pressure to the cooling of described welding position.The present invention changes the mode of the large area docking employing Manual flame soldering of two pieces metallic plate, solve the docking welding of thick sheet metal large area use resistance brazing easily to occur fill solder is bad, gas is difficult to discharge, defect is more, the problem that ratio of brazing area is low, makes brazing layer have good ratio of brazing area, bond strength and electric property.
Description
Technical field
The present invention relates to a kind of intermetallic method for welding, a kind of soldering side being suitable to weld between large-area metal
Method.
Background technology
At present, the docking soldering of the large area of two pieces metallic plate typically uses the mode of Manual flame soldering, but soldering
Time is longer, there is efficiency low, and labor intensity is big, welds relatively low compared with ratio of brazing area during thick sheet metal.General high-power resistance soldering
Firing rate is fast, and efficiency is high, and weld seam is heated evenly, if two thicker metallic plates docking welding use resistance brazings, battery lead plate with
Solder joint is vertical and is close to solder joint, easily causes ratio of brazing area when foil-like insufficient solder connection prefabricated in weld seam or when having portion outflow low,
And the docking big resistance brazing gas of area is not easy to discharge, the defect such as gas porosity is a lot, and ratio of brazing area is relatively low, for
The bond strength of brazing member and electric property all create large effect.
Summary of the invention
It is an object of the invention to provide the docking resistance brazing method of a kind of thick sheet metal, change the big face of two pieces metallic plate
Long-pending docking uses the mode of Manual flame soldering, solves the docking welding of thick sheet metal large area and uses resistance brazing solder easily occur
Filling bad, gas to be difficult to discharge, defect is more, the problem that ratio of brazing area is low, make brazing layer have good ratio of brazing area, combine strong
Degree and electric property.
The present invention solves that the technical scheme that above-mentioned technical problem uses is:
A kind of thick sheet metal large area docking method for welding is realized by following steps:
A, in one rectangular indentation of the junction of metallic plate brazing surface and metallic plate upper surface processing, make two pieces metallic plate pair
A U-type groove is formed when connecing；
B, between two pieces metallic plate brazing surface, place foil-like cored solder, use fixture to make two pieces metallic plate and foil-like soldering
Material is combined closely, preset cored solder in U-type groove；
C, being placed in by the weld seam of two metallic plates after clamping between the upper/lower electrode of resistance welder, contact electrode covers whole
Solder joint, solder joint is with to contact electrode contact surface vertical；
D, resistance welder power-on and power-off pole plate pressurize, and electrified regulation is the fusing of preset cored solder in making foil-like cored solder and U-type groove
It is full of weld seam, stops heating and continue to keep pressure to cool down to described welding position.
The contact electrode material of described resistance welder is graphite, contact electrode be connected with welding machine cast iron plate, cast iron plate and
Cooled copper is connected.
The thickness of described two pieces metallic plate is 15mm ~ 60mm.
The material of described two pieces metallic plate is same metal material or different metal materials, can be selected from copper, copper alloy,
Any one in aluminum, aluminium alloy, rustless steel.
The docking mode of described two pieces metallic plate be plane docking or wherein metallic plate be machined with the plug-in type of U-type groove
U-shaped docking.
Described foil-like cored solder is that in material of the same race, and two pieces metallic plate, fusing point is relatively low with preset cored solder in U-type groove
The fusing point of metallic plate is higher than the fusing point more than 100 DEG C of described cored solder.
The sectional dimension of described U-type groove is 0.5 × 0.5mm ~ 10 × 10mm.
After two pieces metallic plate soldering has connect, can remove U-shaped with the bottom surface of the upper surface of machined metal plate to U-type groove
Groove.
The present invention uses thick sheet metal large area to dock resistance brazing method, compared with prior art, uses resistance brazing instead
Mode, and the passage of preset cored solder and aerofluxus is set, makes the weld heating time short, homogeneous heating, fill solder is abundant, subtracts
Having lacked the generation of the defects such as pore, ratio of brazing area is high, adds efficiency and yield rate, improves bond strength and the electricity of brazing layer
Performance.
Accompanying drawing explanation
Schematic side view when Fig. 1 is the thick sheet metal large area docking soldering realizing the present invention.
Fig. 2 is the one of which plane docking soldering form schematic diagram realizing the present invention.
Fig. 3 is the one of which plug-in type U-shaped docking soldering form schematic diagram realizing the present invention.
Detailed description of the invention
[embodiment 1]
Two pieces thick sheet metal 1 material is T2 copper, and preset cored solder 4 is the foil-like cored solder 3 of selection with in U-type groove 2
BAg45CuZn, the soldering faying face of two pieces T2 copper coin 1 is U-shaped, illustrates in conjunction with Fig. 1 and Fig. 3, method described in present embodiment
Realized by following steps.
The thickness of first step two pieces T2 copper coin 1 is machined to 38mm, and wherein the T2 copper coin width with U-shaped is 140mm, inserts
The T2 copper coin width entered in U-type groove is 99.7mm, process in two pieces copper coin 1 solder side and upper surface junction an a width of 4mm,
It it is highly the U-type groove 2 of 3mm.
Second step places the foil-like BAg45CuZn cored solder 3 that 0.15mm is thick in two pieces T2 copper coin 1U type contact surface gap,
And two pieces T2 copper coin 1 is combined closely with cored solder 3 to use fixture clamping to ensure, and preset 3 × 3mm in the U-type groove of 4 × 3mm
Strip or Φ 3mm circle strip BAg45CuZn cored solder 4.
The weld seam of the two pieces T2 copper coin 1 after clamping is placed between the upper/lower electrode of resistance welder by the 3rd step, graphite contact
Electrode 5 covers whole U-shaped solder joint, and solder joint is vertical with graphite contact electrode 5 contact surface.
4th step starts the pressurization of resistance welder power-on and power-off pole plate pressurizing button, moulding pressure 0.5 ~ 8MPa, is then electrified to pre-
Heat, preheats temperature 600 ~ 720 DEG C, and 3min, then improved heating-up temperature, heating-up temperature 745 ~ 845 DEG C, made foil-like pricker preheating time
In solder 3 and U-type groove 2, preset cored solder 4 melts, weld seam to be full of, stop heated by electrodes and continue keep pressure to 700 DEG C with
Under, removal electrode pressure, takes out welding workpiece.
It is 35mm that the upper surface of the T2 copper coin that welding is completed by the 5th step is machined to thickness, removes U-type groove 2.
[embodiment 2]
In two pieces thick sheet metal 1, a material is H65 pyrite, and another part material is 1Cr18Ni9Ti corrosion resistant plate, selects
Foil-like cored solder 3 be BAg45CuZn, H65 brass sheet 1 and 1Cr18Ni9Ti corrosion resistant plate 1 with preset cored solder 4 in U-type groove 2
Soldering faying face be plane, illustrate in conjunction with Fig. 1 and Fig. 2, method described in present embodiment is realized by following steps.
First step H65 brass sheet 1 is machined to 23mm with the thickness of 1Cr18Ni9Ti corrosion resistant plate 1, and width is 100mm,
H65 brass sheet 1 and 1Cr18Ni9Ti corrosion resistant plate 1 solder side and upper surface junction process an a width of 3mm, height is 3mm
U-type groove 2.
Second step docks with 1Cr18Ni9Ti corrosion resistant plate 1 at H65 brass sheet 1 that to place 0.1mm in contact surface gap thick
Foil-like BAg45CuZn cored solder 3, and use fixture clamping to ensure H65 brass sheet 1,1Cr18Ni9Ti corrosion resistant plate 1 and cored solder
3 combine closely, and preset 2 × 2mm strip or Φ 2mm circle strip BAg45CuZn cored solder 4 in the U-type groove of 3 × 3mm.
H65 brass sheet 1 after clamping is placed in the upper of resistance welder with the weld seam of 1Cr18Ni9Ti corrosion resistant plate 1 by the 3rd step
Between bottom electrode, graphite contact electrode 5 covers whole solder joint, and solder joint plane is vertical with graphite contact electrode 5 contact surface.
4th step starts the pressurization of resistance welder power-on and power-off pole plate pressurizing button, moulding pressure 0.5 ~ 8MPa, is then electrified to add
Heat, heating-up temperature 745 ~ 845 DEG C, in making foil-like cored solder 3 and U-type groove 2, preset cored solder 4 melts, weld seam to be full of, and stops electricity
Pole heats and continues to keep pressure to less than 700 DEG C, and removal electrode pressure, workpiece is welded in taking-up.
The upper surface of the H65 brass sheet 1 that welding is completed by the 5th step and 1Cr18Ni9Ti corrosion resistant plate 1 is machined to thickness and is
20mm, removes U-type groove 2.
Claims (8)
1. a thick sheet metal large area docking method for welding, it is characterised in that: described method for welding is realized by following steps:
A, in one rectangular indentation of the junction of metallic plate (1) brazing surface and metallic plate (1) upper surface processing, make two pieces metallic plate
A U-type groove (2) is formed during docking；
B, placement foil-like cored solder (3) between two pieces metallic plate (1) brazing surface, use fixture to make two pieces metallic plate and foil-like pricker
Solder (3) is combined closely, preset cored solder (4) in U-type groove (2)；
C, being placed in by the weld seam of two metallic plates after clamping between the power-on and power-off pole plate of resistance welder, contact electrode (5) covers whole
Individual solder joint, solder joint is with to contact electrode (5) contact surface vertical；
D, resistance welder power-on and power-off pole plate pressurize, and electrified regulation makes preset cored solder (4) in foil-like cored solder (3) and U-type groove (2)
Fusing is full of weld seam, stops heating and continues to keep pressure to cool down to welding position.
A kind of thick sheet metal large area docking method for welding the most according to claim 1, it is characterised in that: described electric resistance welding
Contact electrode (5) material of machine is graphite, and contact electrode (5) is connected with welding machine cast iron plate (6), cast iron plate and cooled copper
(7) it is connected.
A kind of thick sheet metal large area docking method for welding the most according to claim 1, it is characterised in that: described two pieces gold
The thickness belonging to plate (1) is 15mm ~ 60mm.
A kind of thick sheet metal large area docking method for welding the most according to claim 1, it is characterised in that: described two pieces gold
The material belonging to plate (1) is same metal material or different metal materials.
A kind of thick sheet metal large area docking method for welding the most according to claim 1, it is characterised in that: described two pieces gold
The docking mode belonging to plate (1) is the U-shaped docking of plug-in type that plane is docked or wherein a metallic plate is machined with U-type groove.
6. dock method for welding according to a kind of thick sheet metal large area described in claim 1 or 3, it is characterised in that: described paper tinsel
Shape cored solder (3) is material of the same race with preset cored solder (4) in U-type groove (2), and in two pieces metallic plate (1), fusing point is relatively low
Metallic plate fusing point is higher than the fusing point more than 100 DEG C of described cored solder.
A kind of thick sheet metal large area docking method for welding the most according to claim 1, it is characterised in that: described U-type groove
(2) sectional dimension is 0.5 × 0.5mm ~ 10 × 10mm.
8. dock method for welding according to a kind of thick sheet metal large area described in claim 1 or 7, it is characterised in that: two pieces gold
After genus plate (1) soldering has connect, the bottom surface of the upper surface of machined metal plate to U-type groove (2), remove U-type groove (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410274005.3A CN104002004B (en) | 2014-06-19 | 2014-06-19 | A kind of thick sheet metal large area docking method for welding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410274005.3A CN104002004B (en) | 2014-06-19 | 2014-06-19 | A kind of thick sheet metal large area docking method for welding |
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| CN104002004A CN104002004A (en) | 2014-08-27 |
| CN104002004B true CN104002004B (en) | 2016-09-28 |
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| CN105798415B (en) * | 2014-12-30 | 2019-06-28 | 中国科学院宁波材料技术与工程研究所 | Welder and welding method |
| CN106270865B (en) * | 2016-08-30 | 2019-06-18 | 郑州机械研究所有限公司 | A kind of lightweight copper component resistance brazing device and method |
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| CN110539046A (en) * | 2019-07-31 | 2019-12-06 | 江苏中车电机有限公司 | Large-area lap joint resistance brazing method for copper or copper alloy thick plate |
| WO2021044972A1 (en) * | 2019-09-05 | 2021-03-11 | パナソニックＩｐマネジメント株式会社 | Joint structure |
| CN111907069B (en) * | 2020-07-21 | 2023-05-12 | 大连理工大学 | Robot-assisted continuous resistance welding equipment and welding method for thermoplastic materials |
| CN112643162B (en) * | 2020-11-30 | 2022-06-28 | 浙江福达合金材料科技有限公司 | Welding method of industrial plug and socket contact assembly |
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