Method for improving oxidation blackening problem of welding type contact element in resistance welding

Abstract

The invention discloses a method for improving the oxidation blackening problem of a welding type contact element in resistance welding. The method comprises the following steps that S1, a welding procedure is performed, specifically, the contact element with a nickel-plated bracket is placed on graphite electrode resistance welding equipment for welding; S2, surface treatment is conducted, specifically, a welded product is taken out, placed in a surface treatment chemical reagent to be soaked for 50-70 s and then taken out, and the surface treatment chemical reagent comprises formic acid, glycollic acid, sodium hypophosphite and deionized water; and S3, product post-treatment is carried out, specifically, a semi-finished product element subjected to surface treatment is placed in a material turnover box, post-treatment cleaning is conducted on the semi-finished product element, a magnetic polisher cleaning technology is adopted for post-treatment cleaning, finally, clean water is used for cleaning, drying is conducted, and a welded contact element finished product is obtained. The welding strength of the product can be remarkably improved, and the welding appearance of the product can be improved.

Description

technical field [0001] The invention belongs to the technical field of welded contact element processing, and in particular relates to a process method for improving resistance welding oxidation and blackening of a nickel-plated element of a bracket. Background technique [0002] The push button switch is a widely used electric control device. The push button switch, also known as the control button (referred to as the button), is a low-voltage electrical appliance that is used to connect and break small current circuits. Push button switches are usually used in circuits to issue start or stop commands to control the on and off of electric coil currents such as electromagnetic starters, contactors, and relays. In addition, button switches are generally used in control circuits with AC and DC voltages below 440V and currents less than 5A. Generally, they do not directly manipulate the main circuit, but can also be used in interconnected circuits. [0003] The contact element...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for improving the problem of oxidation and blackening of welded contact element resistance welding. The problem of unstable welding strength of the components, also solves the problem of high-temperature oxidation and blackening of the nickel-plated contact components of the bracket after welding, not only improves the welding strength of the product, but also improves the welding appearance of the product

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