A preparation method of resistance welding electrode for automatic welding station of automobile robot

Abstract

Disclosed is a preparation method for a car robot automatic welding station resistance welding electrode. The preparation method for the car robot automatic welding station resistance welding electrode uses raw materials of, based on the weight percentage, 0.5-1.0% of aluminum which forms 0.8-2.2% of aluminum oxide after internal oxidation and the balance copper. A processing technology process used in the preparation method for the car robot automatic welding station resistance welding electrode includes steps: preparing powder in water atomization mode; drying the powder; sieving the powder, preparing an oxygen source; mixing the powder; filling the powder into a rubber sleeve; performing isostatic cool pressing; performing integration heat treatment of the internal oxidation, reduction and sintering; cladding and sealing oxygen-free copper; heating a powder ingot; performing hot extrusion; cutting the powder ingot through a saw; performing straightening; performing diameter reducing forging; packaging and warehousing finial products. The preparation method for the car robot automatic welding station resistance welding electrode has the advantages of being high in strength, high in conductivity and high in softening resisting temperature, solving powder ingot heating and oxidation problems in powder ingot storage and before powder ingot extrusion, improves surface quality of work pieces, improves pass rate, and reduces cost.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metal processing, relates to the fields of automobile resistance welding electrodes, battery (nickel-metal hydride batteries, lithium batteries, etc.) welding electrodes and the like, in particular to a preparation method of resistance welding electrodes for automatic welding stations of automobile robots. Background technique [0002] In modern industry, the extensive use of production lines, automatic welding machines, and manipulators requires welding to be completed at high speed, high tempo, and high quality, which puts forward higher requirements for all components of welding equipment. Resistance welding electrodes need to be replaced frequently during use because they are frequently in contact with the workpiece under high temperature and high pressure. Chromium-zirconium copper (Cu-Cr-Zr series), the electrode material used in large quantities, is seriously damaged due to its low soft...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a method for preparing resistance welding electrodes for automatic welding stations of automobile robots, which has high strength, high conductivity, and high resistance to softening temperature, and solves the problem of powder ingot storage and The problem of heating and oxidation of powder ingots before extrusion improves the surface quality of processed materials, improves the yield of finished products, and reduces costs

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