Unlock instant, AI-driven research and patent intelligence for your innovation.

Novel metal material arc spot welding method

A technology of arc spot welding and metal materials, which is applied in the field of metal welding and arc spot welding of metal materials, can solve problems such as joint deformation and welding spot energy concentration, and achieve the effects of improving strength, achieving uniform distribution, reducing thickness and uniformity

Inactive Publication Date: 2014-01-15
SHANGHAI JIAOTONG UNIV +1
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the above-mentioned deficiencies existing in the prior art, and provides a metal material arc spot welding method to overcome the shortcoming that the welding spot energy is too concentrated. For light metals, the melting connection between light metals is realized by spot welding. For light metals and steel, By melting light metal and brazing connection with the coated steel plate in contact, the strength and stability of the joint can be improved, and the problem of severe deformation of the joint caused by continuous seam welding can be solved.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Novel metal material arc spot welding method
  • Novel metal material arc spot welding method
  • Novel metal material arc spot welding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The arc welding system 1 adopts cold metal transition (CMT) arc mode in this embodiment; the upper light metal plate 3 to be welded is aluminum alloy AA6061-T6, and the lower metal plate 4 is galvanized dual-phase steel plate DP590, the plate Thickness matching: 1mm+1.2mm, aluminum alloy plate 3 is mechanically polished to remove the oxide layer on the surface, and acetone reagent is used to remove oil stains on the surface of the metal plate; the material of the welding wire 2 used is A1Si5, and the diameter is 1.2mm. The robot 7 is an industrial mechanical arm with a load-bearing capacity of 5kg. It has six rotating axes and a working radius of 1444mm. During the welding process, it drives the welding torch 9 mounted on the sixth axis to precisely position it on the light metal plate 3 process. The central position of the hole; Argon is housed in the gas cylinder 5 as a shielding gas.

[0043] The welding process parameters in this embodiment are: welding current 76A,...

Embodiment 2

[0054] In this embodiment, the arc welding system 1 adopts the cold metal transition (CMT) arc mode; the upper light metal plate 3 to be welded is AZ31B magnesium alloy, and the lower galvanized steel plate 4 is galvanized dual-phase steel DP780. Thickness matching: 1.2mm+1.6mm, the oxide layer on the surface of the magnesium alloy plate 3 is removed with a wire brush, and the oil stain on the surface of the metal plate is removed with an acetone reagent; the material of the welding wire 2 used is AZ31 magnesium alloy welding wire with a diameter of 1.2mm; The robot 7 is an industrial mechanical arm with a load-bearing capacity of 5kg. It has six rotating axes and a working radius of 1444mm. During the welding process, it drives the welding torch 9 installed on the sixth axis to precisely position it at the center of the process hole of the light metal plate 3. Central position; Argon is housed in the gas cylinder 5 as a shielding gas.

[0055] The welding process parameters i...

Embodiment 3

[0068] In this embodiment, the upper light metal plate 3 is AA6061-T6 aluminum alloy, the lower light metal plate 4 is AZ31B magnesium alloy, the thickness of the plates is matched: 3mm+3mm, the aluminum alloy plate 3 and the magnesium alloy plate 4 are mechanically polished to remove surface oxidation Layer, use acetone reagent to remove the oil on the surface of the metal plate; the material of the welding wire 2 used is HS201 pure copper welding wire, with a diameter of 1.2mm,

[0069] The welding process parameters in this embodiment are: welding current 103A, voltage 10.6V, wire feeding speed 4.7m / min, arc length correction 0%, welding wire withdrawal frequency 70Hz, welding speed 7.5mm / s, shielding gas argon The flow rate is 18L / min.

[0070] The process of this embodiment is as Figure 4 (a)~(j) and Figure 5 Shown:

[0071] 1) Drill a cylindrical process hole with a diameter of 6.5mm on the aluminum alloy plate 3 in advance.

[0072] 2) The aluminum alloy plate 3 i...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to an arc spot welding method used between light metals and between the light metal and a coated sheet. An electric-arc welding system is adopted and is on the basis of a preset welding track program and welding parameters; and a welding gun takes the circular motion around the edge of an auxiliary hole of a metal plate under the control of a robot and carries out welding in the protection atmosphere of inert gas, so that a spot melting brazing joint is formed between the light metal and the coated sheet. According to the invention, energy is uniformly distributed in welding spots; the thickness and the uniformity of a compound between the friable metals, which is formed on an aluminium steel interface, are reduced; the mechanical property and the stability of the joint are improved; and the arc spot welding method has the advantages of low cost and high efficiency and is suitable for welding parts of a vehicle body, which are connected mainly by a resistance spot welding process.

Description

technical field [0001] The invention relates to a metal welding method, in particular to a metal material arc spot welding method, which belongs to the field of welding technology. Background technique [0002] Because the density of light alloy materials such as aluminum and magnesium is much lower than that of steel, they are favored by major automobile manufacturers. However, the overall mechanical properties of high-quality steel are still better than light alloy materials. Therefore, advanced dissimilar materials such as light alloy and high-quality steel are used to connect The structure of the car has become the preferred solution for the lightweight of the car, which involves the heterogeneous connection between the light alloy and the steel. Because the melting point, thermal expansion coefficient, electrical conductivity, and thermal conductivity of aluminum and steel are very different, and hard and brittle phases—intermetallic compounds are easily formed during w...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/007B23K9/12
Inventor 李永兵林忠钦雷海洋王培中来新民陈关龙
Owner SHANGHAI JIAOTONG UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com