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Method for performing spot welding on Al-Zn hot-coated steel plate

A hot-dip aluminum and steel plate technology, applied in welding media, welding equipment, welding equipment and other directions, can solve the problems of high consumption cost of foil tape production, serious sticking phenomenon, low electrode life, etc., to achieve simple and convenient grinding work, Good electrode cooling conditions, improve the effect of electrode life

Inactive Publication Date: 2011-02-02
BAOSHAN IRON & STEEL CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Generally speaking, the above methods have the following defects: serious sticking phenomenon, low electrode life; high cost of foil production consumption; complex equipment, it is difficult to achieve reliable operation on existing equipment with simple tooling

Method used

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  • Method for performing spot welding on Al-Zn hot-coated steel plate
  • Method for performing spot welding on Al-Zn hot-coated steel plate
  • Method for performing spot welding on Al-Zn hot-coated steel plate

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Embodiment Construction

[0032] Such as Figure 8 Shown is a schematic diagram of the difference between the spot welding method A of the present invention and the ordinary spot welding method B. The upper and lower foil strips are inserted between the upper and lower electrodes and the upper and lower workpieces. It is worth noting that the foil strips in the present invention are single-sided Tin-plated steel sheet (such as Figure 4 shown) and the tinned surface is in contact with the workpiece, while the non-tinned surface is in contact with the copper electrode, which separates the direct contact between the copper electrode and the aluminum-zinc coating of the workpiece, avoiding the prerequisites for alloying aluminum, zinc and copper . Such as figure 1 , figure 2 shown.

[0033] In addition, in order to realize the stability of the subsequent welding process and the practical operation is simple, this method uses a step-type spot welding electrode such as image 3 shown, and with the two...

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Abstract

The invention provides a method for performing spot welding on an Al-Zn hot-coated steel plate. In the method, a foil belt is arranged between a copper electrode and an Al-Zn hot-coated steel plate workpiece; a step type large-contact planar electrode is adopted, a two-section welding current mode is adopted; and the two-section welding current adopts a constant current control mode, so that the foil belt is not adhered to the workpiece and the electrode and each welding spot has fine appearance and stable quality. The copper electrode is only contacted with a non-tinplated surface of the foil plate, so the method solves the problem that the electrode is alloyed by a zinc aluminium coating fundamentally, prolongs the service life and improves the welding spot quality of a spot-welding electrode of the zinc aluminium plated steel plate, prolongs the service life of the electrode and has favorable popularization and application prospects.

Description

technical field [0001] The invention belongs to the technical field of material processing, is applied to the resistance spot welding connection of hot-dip galvanized steel sheets, and particularly relates to a spot welding method of hot-dip galvanized steel sheets. Background technique [0002] The spot welding method is widely used in various sheet metal processing fields, including many industries such as home appliances, auto parts and hardware. As one of the mainstream metal sheet material joining technologies, spot welding has the advantages of high production efficiency, low production cost, and easy automation of the process. [0003] The coating structure of hot-dip aluminum-zinc steel plate is a dense quaternary crystal formed by aluminum-iron-silicon-zinc. This coating combines the advantages of high corrosion resistance of aluminum and zinc's protective effect on cutting edges, and has excellent corrosion resistance. properties, high heat resistance, etc. Compa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K11/11B23K35/04B23K11/36B23K103/16
Inventor 傅延安阎启包晔峰
Owner BAOSHAN IRON & STEEL CO LTD
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