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Method for hot-pressure welding aluminum-steel dissimilar material

A dissimilar material, hot-press welding technology, applied in welding medium, welding equipment, welding equipment and other directions, can solve the problems of large differences in thermophysical properties, hinder the combination of dissimilar materials, and high level of internal stress in the weld, and achieve the shape of the weld. Beautiful appearance, easy arc starting, and stable arc combustion

Active Publication Date: 2015-04-22
KUSN BAOJIN LASER TAILOR WELDED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the welding between aluminum and steel has always been a hot and difficult issue in the field of connection. The main difficulty of welding between aluminum and steel lies in: the thermal physical properties of the two are quite different, and the internal stress level of the weld after welding is high; The reaction generates intermetallic compounds, which reduces the toughness of the weld; the third is that there is a dense oxide film on the surface of the aluminum alloy, which hinders the combination of dissimilar materials

Method used

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  • Method for hot-pressure welding aluminum-steel dissimilar material
  • Method for hot-pressure welding aluminum-steel dissimilar material

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Experimental program
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Effect test

Embodiment 1

[0019] Embodiment one: adopt commercially available 304L stainless steel as the welding core, the composition and mass percentage of powder are: 42% rutile, 30% feldspar, 10% dolomite, 7% carboxymethyl cellulose, 5% manganese powder, silicon Iron 2% and nickel powder 4%, with potassium silicate as the binder of the drug skin, the addition is 34% of the total mass of the drug powder.

Embodiment 2

[0020] Embodiment two: adopt commercially available 304L stainless steel as the welding core, use potassium silicate as the binding agent of the drug skin, the composition and mass percentage of the drug powder are: 52% rutile, 25% feldspar, 5% dolomite, carboxymethyl Base cellulose 5%, manganese powder 9%, ferrosilicon 4% and nickel powder 0%, with potassium silicate as the binder of the drug skin, the addition is 32% of the total mass of the drug powder.

Embodiment 3

[0021] Embodiment three: adopt commercially available 304L stainless steel as the welding core, use potassium silicate as the binding agent of the coating, the composition and mass percentage of the medicinal powder are: 50% rutile, 20% feldspar, 7% dolomite, carboxymethyl 10% base cellulose, 7% manganese powder, 1% ferrosilicon and 5% nickel powder, with potassium silicate as the binder of the drug skin, the addition is 28% of the total mass of the drug powder.

[0022] The effect of the embodiment:

[0023] The object of the present invention is to provide a kind of aluminum-steel dissimilar material hot press that can remove the oxide film on the surface of aluminum alloy under the effect of arc cathode atomization by heating the welded workpiece of welding hot-press welding through the energy of welding arc. Welding method.

[0024] The technical scheme adopted in the present invention is:

[0025] A hot-press welding method containing aluminum-steel dissimilar materials...

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Abstract

The invention relates to the technical field of welding, in particular to a method for hot-pressure welding an aluminum-steel dissimilar material, and the method comprises the following steps of machining an end surface to be welded of an aluminum-steel material into a corresponding shape which is greater than the area of the end surface which is vertical to the axis; utilizing a mechanical way to clear the end surface to be welded; utilizing organic solvent or detergent to clear the end surface to be welded; restraining an aluminum pipe in mechanical structure, heating the end surface to be welded of the aluminum pipe in a reciprocating way to enable the metal to be welded to be at a plastic state, and applying the pressure needed by the hot-pressure welding on a steel pipe. Due to the adoption of the method, unfavorable phenomenon of an oxidized film part of the conventional aluminum-steel hot-pressure welding technology such as insufficient soldering, brittle failure and weld bonding, the quality of a welding connector is improved, the temperature of the aluminum alloy side is high in the aluminum-steel hot-pressure welding process by effectively controlling the hot input quantity of the welding electric arc, the temperature of the steel side is low or higher than the room temperature, and the welding failure caused by the high temperature of the steel side and insufficient rigidness when the entire material is heated can be well solved.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a hot-press welding method for aluminum-steel dissimilar materials with simple operation and good welding effect. Background technique [0002] With the rapid development of industries such as automobiles, electronics, aviation, and aerospace, there are more and more demands for the connection of aluminum-steel dissimilar materials. However, the welding between aluminum and steel has always been a hot and difficult issue in the field of connection. The main difficulty of welding between aluminum and steel lies in: the thermal physical properties of the two are quite different, and the internal stress level of the weld after welding is high; The reaction generates intermetallic compounds, which reduces the toughness of the weld; the third is that there is a dense oxide film on the surface of the aluminum alloy, which hinders the combination of dissimilar materials. At present, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K20/00B23K20/24B23K20/227B23K35/365B23K103/20
Inventor 孙清洁刘一搏冯吉才
Owner KUSN BAOJIN LASER TAILOR WELDED
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