CN109202247A - A kind of welding method of aluminium alloy and steel - Google Patents
A kind of welding method of aluminium alloy and steel Download PDFInfo
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- CN109202247A CN109202247A CN201811259062.9A CN201811259062A CN109202247A CN 109202247 A CN109202247 A CN 109202247A CN 201811259062 A CN201811259062 A CN 201811259062A CN 109202247 A CN109202247 A CN 109202247A
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- rivet
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- aluminium alloy
- counter sink
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 98
- 239000010959 steel Substances 0.000 title claims abstract description 98
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 79
- 238000003466 welding Methods 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000005553 drilling Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000007769 metal material Substances 0.000 abstract description 2
- 238000010008 shearing Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 210000001503 joint Anatomy 0.000 description 5
- 238000003801 milling Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000011120 plywood Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000035900 sweating Effects 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/10—Spot welding; Stitch welding
- B23K11/11—Spot 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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/16—Resistance welding; Severing by resistance heating taking account of the properties of the material to be welded
- B23K11/20—Resistance welding; Severing by resistance heating taking account of the properties of the material to be welded of different metals
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
Abstract
A kind of welding method of aluminium alloy and steel, it belongs to metal material connection area, and in particular to the resistance unit welding technology that aluminium alloy is combined with the resistance spot welding of steel with riveting.The invention aims to solve the problem of the weldering of the resistance unit of existing aluminium alloy and steel, there are rivet covers to lead to workpiece surface protrusion.The welding method of aluminium alloy and steel: one, counter sink is milled out；Two, steel rivet is processed；Three, steel rivet is fully inserted into counter sink；Four, it is welded using resistance welding method, i.e. completion aluminium alloy and steel welds.Advantage: the boss of rivet cover formation is concealed.Present invention is mainly used for the welding of aluminium alloy and steel.
Description
Technical field
The invention belongs to metal material connection areas, and in particular to aluminium alloy is combined with the resistance spot welding of steel with riveting
Resistance unit welding technology.
Background technique
Automotive light weight technology has obtained the height weight of countries in the world as the important means for reducing crude oil consumption and exhaust emissions
Depending on reducing one of the approach that automotive dead weight is automotive light weight technology, considering cost and light weight by using lightweighting materials
Change effect, poly-material structure design will represent the development trend of Vehicle mass reduction from now on.However, the mixing of multiple material makes
With also to Auto-body manufacturing technology, especially welding and interconnection technique proposition huge challenge.
Publication " a kind of aluminium alloy-high-strength steel resistance unit soldering method " (publication No. CN105478982A) is logical for China
The welding crossed between the solid rivet and lower plywood of lower plywood homogeneity carrys out top plate " lock " between rivet cover and lower plywood
Realize the connection of dissimilar metal, hard crisp phase problem when directly welding so as to avoid dissimilar metal is available reliable different
Kind material welding point.However, leading to workpiece surface protrusion due to the presence of rivet cover, it is easy to make one injured or work because of collision
Part damage.
Summary of the invention
The invention aims to solve the weldering of the resistance unit of existing aluminium alloy and steel, there are rivet covers, lead to workpiece surface
The problem of protrusion, and the welding method of a kind of aluminium alloy and steel is provided.
A kind of welding method of aluminium alloy and steel, is specifically realized by the following steps:
One, go out through-hole with drill bit drilling on the center of aluminium alloy plate overlapping regions, pass through end on the basis of through-hole
Milling cutter mills out counter sink；
Two, according to counter sink dimensioned steel rivet in step 1, when guaranteeing that steel rivet fills in counter sink, steel riveting
The upper surface of nail is equal with the upper and lower surfaces of the aluminium alloy plate of resistance unit respectively with lower end surface；
Three, steel rivet is fully inserted into counter sink, removing surface is carried out to the bond pad locations of aluminium alloy plate and steel plate；
Four, aluminium alloy plate and steel plate are overlapped, is welded using resistance welding method, nugget size >=4t of welding1 /2, t is that aluminium alloy plate thickness, i.e. completion aluminium alloy and steel weld.
The invention has the advantages that the one, present invention conceals the boss of rivet cover formation by counter sink, so that workpiece appearance is flat
Whole, overall value is high, is not easy to make one injured or workpiece damage because of collision；Aluminium can be realized using traditional resistance spot welding equipment to close
Gold is reliably connected with high-strength steel；Upper layer aluminium alloy plate is alternatively at other lightweighting materials, such as magnesium alloy plate.Two, work as aluminium
Alloy sheets with a thickness of 2mm when, butt joint carries out tensile-sbear strength test, and average to draw shearing be 6.5kN~6.9kN, the result table
The bright present invention is improving resistance unit plumb joint surface quality simultaneously, remains to obtain higher strength of joint.
Detailed description of the invention
Fig. 1 is craftsman's assembling structure schematic diagram of embodiment 1, and 1 expression aluminium alloy plate in figure, 2 indicate high-strength steel, and 3 indicate
Steel rivet；
Fig. 2 is craftsman's assembling structure schematic diagram of embodiment 2, and 1 expression aluminium alloy plate in figure, 2 indicate high-strength steel, and 3 indicate
Steel rivet；
Fig. 3 is craftsman's assembling structure schematic diagram of embodiment 3, and 1 expression aluminium alloy plate in figure, 2 indicate high-strength steel, and 3 indicate
Steel rivet；
Fig. 4 is craftsman's assembling structure schematic diagram of embodiment 4, and 1 expression aluminium alloy plate in figure, 2 indicate high-strength steel, and 3 indicate
Steel rivet.
Specific embodiment
Specific embodiment 1: present embodiment is the welding method of a kind of aluminium alloy and steel, specifically according to the following steps
It completes:
One, go out through-hole with drill bit drilling on the center of aluminium alloy plate overlapping regions, pass through end on the basis of through-hole
Milling cutter mills out counter sink；
Two, according to counter sink dimensioned steel rivet in step 1, when guaranteeing that steel rivet fills in counter sink, steel riveting
The upper surface of nail is equal with the upper and lower surfaces of the aluminium alloy plate of resistance unit respectively with lower end surface；
Three, steel rivet is fully inserted into counter sink, removing surface is carried out to the bond pad locations of aluminium alloy plate and steel plate；
Four, aluminium alloy plate and steel plate are overlapped, is welded using resistance welding method, nugget size >=4t of welding1 /2, t is that aluminium alloy plate thickness, i.e. completion aluminium alloy and steel weld.
Specific embodiment 2: the difference of present embodiment and specific embodiment one is: aluminium alloy plate in step 1
With a thickness of 2mm.Other are same as the specific embodiment one.
Specific embodiment 3: the difference of present embodiment and specific embodiment two is: described in step 1 heavy
Head bore is flat stepped counter sink, and flat step type counter sink is made of public hole and head bore, and the diameter in public hole is 6mm, the length in public hole
Degree is 1mm；The diameter of head bore is 10mm, and the length of head bore is 1mm；Steel rivet described in step 2 is flat stepped rivet,
Flat step type rivet is made of rivet public affairs and manufactured head, and the diameter of rivet public affairs is 6mm, and the length of rivet public affairs is 1mm；Manufactured head
Diameter is 10mm, and the length of manufactured head is 1mm.Other are identical with embodiment two.
When aluminium alloy plate is with a thickness of 2mm, in order to reach optimal welding effect, the processing of steel rivet and counter sink
Size is the major issue that must be taken into consideration.When using flat stepped rivet as steel rivet, the straight of manufactured head is designed
Diameter is 10mm, and the diameter of rivet public affairs is respectively that the rivet of 4mm, 5mm, 6mm and 7mm are tested.The experimental results showed that working as riveting
When following closely public diameter increases to 6mm from 4mm, connector shearing resistance increases to 6.7kN from 4.0kN, (super when rivet public affairs diameter is 7mm
Cross 6mm), connector shearing resistance is reduced to 6.4kN.When rivet public affairs diameter is less than 6mm, since manufactured head and rivet public affairs are in sweating heat
Great stress is produced under the action of circulation and electrode pressure to concentrate, in the case where drawing shearing, manufactured head is cracked with rivet public affairs,
Then it is broken.When rivet public affairs diameter increases to 6mm, since the bearing capacity of nugget increases, and manufactured head is in conjunction with rivet public affairs
The bearing capacity at position increases, so that fracture occurs at the relatively weak aluminum alloy heat zone of influence.When rivet public affairs diameter is more than
After 6mm, due to reducing the effective bearing area of aluminium alloy, so that the tensile-sbear strength of connector reduces.Therefore present embodiment is flat
The rivet public affairs diameter of stepped rivet obtains optimal mechanical property when being 6mm.And it is prepared according to the size of flat stepped rivet
Flat step type counter sink.
Specific embodiment 4: the difference of present embodiment and specific embodiment two is: described in step 1 heavy
Head bore is oblique band ladder type counter sink, and oblique band ladder type counter sink is made of public hole and back taper head bore, and the diameter in public hole is 6mm, public
The length in hole is 1mm；The lower end surface diameter of back taper head bore is 6mm, and the upper surface diameter of back taper head bore is 10mm, back taper
The length of head bore is 1mm；Steel rivet described in step 2 is sloping step snap riveting nail, and sloping step snap riveting nail is by rivet public affairs and back taper
Shape manufactured head composition, the diameter of rivet public affairs are 6mm, and the length of rivet public affairs is 1mm；The lower end surface diameter of back taper manufactured head is
6mm, the upper surface diameter of back taper manufactured head are 10mm, and the length of back taper manufactured head is 1mm.Other and specific embodiment
Two is identical.
When aluminium alloy plate is with a thickness of 2mm, in order to reach optimal welding effect, the processing of steel rivet and counter sink
Size is the major issue that must be taken into consideration.When using sloping step snap riveting nail as steel rivet, the straight of manufactured head is designed
Diameter is 10mm, and the diameter of rivet public affairs is respectively that the rivet of 4mm, 5mm, 6mm and 7mm are tested.The experimental results showed that working as riveting
When following closely public diameter increases to 6mm from 4mm, connector shearing resistance increases to 6.5kN from 3.3kN, (super when rivet public affairs diameter is 7mm
Cross 6mm), connector shearing resistance is reduced to 6.3kN.When rivet public affairs diameter is less than 6mm, since manufactured head and rivet public affairs are in sweating heat
Great stress is produced under the action of circulation and electrode pressure to concentrate, in the case where drawing shearing, manufactured head is cracked with rivet public affairs,
Then it is broken.When rivet public affairs diameter increases to 6mm, since the bearing capacity of nugget increases, and manufactured head is in conjunction with rivet public affairs
The bearing capacity at position increases, so that fracture occurs at the relatively weak aluminum alloy heat zone of influence.When rivet public affairs diameter is more than
After 6mm, due to reducing the effective bearing area of aluminium alloy, so that the tensile-sbear strength of connector reduces.Therefore present embodiment is oblique
The rivet public affairs diameter of stepped rivet obtains optimal mechanical property when being 6mm.And it is prepared according to the size of sloping step snap riveting nail
Oblique band ladder type counter sink.
Specific embodiment 5: the difference of present embodiment and specific embodiment two is: described in step 1 heavy
Head bore is circular platform type counter sink, and the lower end surface diameter of circular platform type counter sink is 6mm, and the upper surface diameter of circular platform type counter sink is
10mm, the length of circular platform type counter sink are 2mm；Steel rivet described in step 2 is circular platform type rivet, under circular platform type rivet
End face diameter is 6mm, and the upper surface diameter of circular platform type rivet is 10mm, and the length of circular platform type rivet is 2mm.Other and specific reality
It is identical to apply mode two.
When aluminium alloy plate is with a thickness of 2mm, in order to reach optimal welding effect, the processing of steel rivet and counter sink
Size is the major issue that must be taken into consideration.When using circular platform type rivet as steel rivet, design circular platform type rivet
Upper surface diameter is 10mm, comprehensively considers the tensile strength and shearing strength of connector, designs the lower end surface diameter of circular platform type rivet
For 6mm.
Specific embodiment 6: one of present embodiment and specific embodiment one to five difference are: a in step 4
The welding parameter of the resistance welding method are as follows: electrode pressure is 0.2MPa~0.4MPa, and weld interval is 0.25s~0.35s,
Welding current is 14kA~22kA.Other are identical as specific embodiment one to five.
The content of present invention is not limited only to the content of the respective embodiments described above, the group of one of them or several specific embodiments
The purpose of invention also may be implemented in contract sample.
Using following verification experimental verifications effect of the present invention
Embodiment 1: a kind of welding method of aluminium alloy and steel is specifically realized by the following steps:
One, go out through-hole with drill bit drilling on the center of aluminium alloy plate overlapping regions, pass through end on the basis of through-hole
Milling cutter mills out counter sink；Aluminium alloy plate with a thickness of 2mm；The counter sink is flat stepped counter sink, puts down step type countersunk head
The hole Kong Yougong and head bore composition, the diameter in public hole are 6mm, and the length in public hole is 1mm；The diameter of head bore is 10mm, the length of head bore
Degree is 1mm；
Two, according to counter sink dimensioned steel rivet in step 1；The steel rivet is flat stepped rivet, flat rank
Ladder type rivet is made of rivet public affairs and manufactured head, and the diameter of rivet public affairs is 6mm, and the length of rivet public affairs is 1mm；The diameter of manufactured head
For 10mm, the length of manufactured head is 1mm；
Three, steel rivet is fully inserted into counter sink, removing surface is carried out to the bond pad locations of aluminium alloy plate and steel plate；
Four, aluminium alloy plate and steel plate are overlapped, is welded using resistance welding method, is i.e. completion aluminium alloy and steel welds
It connects；The welding parameter of the resistance welding method are as follows: electrode pressure 0.3MPa, weld interval 0.3s, welding current are
15kA。
The size of aluminium alloy plate described in the present embodiment step 1 is 2 × 25 × 100mm；Described in the present embodiment step 3
Steel plate position is high strength steel plate, and high strength steel plate is having a size of 2 × 25 × 100mm；And the overlap joint size of aluminium alloy plate and high strength steel plate
For 25 × 25mm.
Welding equipment is blow-up flow point projection welder DTN-200 in the present embodiment step 4, and electrode shape is D type electrode,
End face diameter is 8mm.
5 samples are welded using 1 technological parameter of embodiment, and butt joint carries out tensile-sbear strength test, average drawing shearing is
6.7kN。
Embodiment 2: a kind of welding method of aluminium alloy and steel is specifically realized by the following steps:
One, go out through-hole with drill bit drilling on the center of aluminium alloy plate overlapping regions, pass through end on the basis of through-hole
Milling cutter mills out counter sink；Aluminium alloy plate with a thickness of 2mm；The counter sink is oblique band ladder type counter sink, oblique band ladder type countersunk head
The hole Kong Yougong and back taper head bore composition, the diameter in public hole are 6mm, and the length in public hole is 1mm；The lower end surface of back taper head bore is straight
Diameter is 6mm, and the upper surface diameter of back taper head bore is 10mm, and the length of back taper head bore is 1mm；
Two, according to counter sink dimensioned steel rivet in step 1；The steel rivet is sloping step snap riveting nail, oblique band
Ladder type rivet is made of rivet public affairs and back taper manufactured head, and the diameter of rivet public affairs is 6mm, and the length of rivet public affairs is 1mm；Back taper
The lower end surface diameter of manufactured head is 6mm, and the upper surface diameter of back taper manufactured head is 10mm, and the length of back taper manufactured head is
1mm；
Three, steel rivet is fully inserted into counter sink, removing surface is carried out to the bond pad locations of aluminium alloy plate and steel plate；
Four, aluminium alloy plate and steel plate are overlapped, is welded using resistance welding method, is i.e. completion aluminium alloy and steel welds
It connects；The welding parameter of the resistance welding method are as follows: electrode pressure 0.3MPa, weld interval 0.3s, welding current are
15kA。
The size of aluminium alloy plate described in the present embodiment step 1 is 2 × 25 × 100mm；Described in the present embodiment step 3
Steel plate position is high strength steel plate, and high strength steel plate is having a size of 2 × 25 × 100mm；And the overlap joint size of aluminium alloy plate and high strength steel plate
For 25 × 25mm.
Welding equipment is blow-up flow point projection welder DTN-200 in the present embodiment step 4, and electrode shape is D type electrode,
End face diameter is 8mm.
5 samples are welded using 2 technological parameter of embodiment, and butt joint carries out tensile-sbear strength test, average drawing shearing is
6.5kN。
Embodiment 3: a kind of welding method of aluminium alloy and steel is specifically realized by the following steps:
One, go out through-hole with drill bit drilling on the center of aluminium alloy plate overlapping regions, pass through end on the basis of through-hole
Milling cutter mills out counter sink；Aluminium alloy plate with a thickness of 2mm；The counter sink is circular platform type counter sink, circular platform type counter sink
Lower end surface diameter is 6mm, and the upper surface diameter of circular platform type counter sink is 10mm, and the length of circular platform type counter sink is 2mm；
Two, according to counter sink dimensioned steel rivet in step 1；The steel rivet is circular platform type rivet, circular platform type
The lower end surface diameter of rivet is 6mm, and the upper surface diameter of circular platform type rivet is 10mm, and the length of circular platform type rivet is 2mm；
Three, steel rivet is fully inserted into counter sink, removing surface is carried out to the bond pad locations of aluminium alloy plate and steel plate；
Four, aluminium alloy plate and steel plate are overlapped, is welded using resistance welding method, is i.e. completion aluminium alloy and steel welds
It connects；The welding parameter of the resistance welding method are as follows: electrode pressure 0.3MPa, weld interval 0.3s, welding current are
15kA。
The size of aluminium alloy plate described in the present embodiment step 1 is 2 × 25 × 100mm；Described in the present embodiment step 3
Steel plate position is high strength steel plate, and high strength steel plate is having a size of 2 × 25 × 100mm；And the overlap joint size of aluminium alloy plate and high strength steel plate
For 25 × 25mm.
Welding equipment is blow-up flow point projection welder DTN-200 in the present embodiment step 4, and electrode shape is D type electrode,
End face diameter is 8mm.
5 samples are welded using 3 technological parameter of embodiment, and butt joint carries out tensile-sbear strength test, average drawing shearing is
6.9kN。
Embodiment 4: comparative example
One, welding preparation
1. the prefabricated rivet hole of appointed part using drilling machine in aluminium alloy plate, bore diameter 5mm.
2. 5mm diameter iron rivet is filled in hole, rivet lower end should maintain an equal level with aluminium alloy plate lower end.
3. pair welding position carries out oil removing, sundries cleaning, the influence of impurity welding quality is avoided.
Two, welding methods and welding material
1. welding method hinders spot welding using inversion type direct-current.
2. welding material uses aluminium alloy plate and high strength steel plate, aluminium sheet is having a size of 2 × 25 × 100mm, plate size 1.8
× 25 × 100mm, overlapping regions 5 is having a size of 25 × 25mm；Rivet is Q235 iron rivet.
Three, welding procedures
1. welding procedure is as shown in figure 4, the welding at rivet using mash welder.
2. selecting electrode pressure 3.6kN, electrode diameter 10mm, electric current 8kA, weld interval, 300ms was welded.
5 samples are welded using 4 technological parameter of embodiment, and butt joint carries out tensile-sbear strength test, average drawing shearing is
7.1kN。
Claims (6)
1. the welding method of a kind of aluminium alloy and steel, it is characterised in that it is completed by the following steps:
One, go out through-hole with drill bit drilling on the center of aluminium alloy plate overlapping regions, pass through end mill(ing) cutter on the basis of through-hole
Mill out counter sink；
Two, according to counter sink dimensioned steel rivet in step 1, when guaranteeing that steel rivet fills in counter sink, steel rivet
Upper surface is equal with the upper and lower surfaces of the aluminium alloy plate of resistance unit respectively with lower end surface；
Three, steel rivet is fully inserted into counter sink, removing surface is carried out to the bond pad locations of aluminium alloy plate and steel plate；
Four, aluminium alloy plate and steel plate are overlapped, is welded using resistance welding method, nugget size >=4t of welding1/2, t is
Aluminium alloy plate thickness, i.e. completion aluminium alloy and steel weld.
2. the welding method of a kind of aluminium alloy and steel according to claim 1, it is characterised in that aluminium alloy plate in step 1
With a thickness of 2mm.
3. the welding method of a kind of aluminium alloy and steel according to claim 2, it is characterised in that described in step 1 heavy
Head bore is flat stepped counter sink, and flat step type counter sink is made of public hole and head bore, and the diameter in public hole is 6mm, the length in public hole
Degree is 1mm；The diameter of head bore is 10mm, and the length of head bore is 1mm；Steel rivet described in step 2 is flat stepped rivet,
Flat step type rivet is made of rivet public affairs and manufactured head, and the diameter of rivet public affairs is 6mm, and the length of rivet public affairs is 1mm；Manufactured head
Diameter is 10mm, and the length of manufactured head is 1mm.
4. the welding method of a kind of aluminium alloy and steel according to claim 2, it is characterised in that described in step 1 heavy
Head bore is oblique band ladder type counter sink, and oblique band ladder type counter sink is made of public hole and back taper head bore, and the diameter in public hole is 6mm, public
The length in hole is 1mm；The lower end surface diameter of back taper head bore is 6mm, and the upper surface diameter of back taper head bore is 10mm, back taper
The length of head bore is 1mm；Steel rivet described in step 2 is sloping step snap riveting nail, and sloping step snap riveting nail is by rivet public affairs and back taper
Shape manufactured head composition, the diameter of rivet public affairs are 6mm, and the length of rivet public affairs is 1mm；The lower end surface diameter of back taper manufactured head is
6mm, the upper surface diameter of back taper manufactured head are 10mm, and the length of back taper manufactured head is 1mm.
5. the welding method of a kind of aluminium alloy and steel according to claim 2, it is characterised in that described in step 1 heavy
Head bore is circular platform type counter sink, and the lower end surface diameter of circular platform type counter sink is 6mm, and the upper surface diameter of circular platform type counter sink is
10mm, the length of circular platform type counter sink are 2mm；Steel rivet described in step 2 is circular platform type rivet, under circular platform type rivet
End face diameter is 6mm, and the upper surface diameter of circular platform type rivet is 10mm, and the length of circular platform type rivet is 2mm.
6. a kind of welding method of aluminium alloy and steel according to claim 3,4 or 5, it is characterised in that institute in step 4
State the welding parameter of resistance welding method are as follows: electrode pressure is 0.2MPa~0.4MPa, and weld interval is 0.25s~0.35s, weldering
Connecing electric current is 14kA~22kA.
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| CN201811259062.9A CN109202247A (en) | 2018-10-26 | 2018-10-26 | A kind of welding method of aluminium alloy and steel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112122758A (en) * | 2020-09-22 | 2020-12-25 | 哈尔滨工业大学（威海） | Ni element-regulated magnetic field-assisted resistance unit welding method for aluminum alloy and steel |
| CN113146007A (en) * | 2021-04-27 | 2021-07-23 | 东风柳州汽车有限公司 | Method and device for determining welding lap amount of resistance spot welding |
| CN114829053A (en) * | 2020-02-20 | 2022-07-29 | 宝马股份公司 | Method for providing a component composite of a motor vehicle and component composite of a motor vehicle |
| CN115464288A (en) * | 2022-10-13 | 2022-12-13 | 长沙学院 | Resistance heat-assisted hybrid welding system based on heterogeneous metal |
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| CN103350276A (en) * | 2013-07-29 | 2013-10-16 | 天津大学 | Spot welding method and application thereof in aluminum alloy and steel |
| CN105478982A (en) * | 2015-12-03 | 2016-04-13 | 天津大学 | Resistance plug welding method of aluminum alloy-high-strength steel |
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