A high-temperature rapid heat treatment process for anti-oxidation of high-frequency resistance welding wire

Abstract

The invention discloses an anti-oxidation high-temperature rapid heating processing technology for a high-frequency resistance welding wire. A heat processing system is included and comprises a heat processing cavity, a transition cavity and a shielding gas conveying pipe. The bottom wall of the heat processing cavity communicates with the top of the transition cavity. The bottom wall of the transition cavity is provided with a lower wire inlet hole and a low wire outlet hole. The heat processing system further comprises a pressure gauge communicating with the heat processing cavity. The shielding gas conveying pipe is provided with an opening valve. The anti-oxidation high-temperature rapid heating processing technology comprises the following steps that the high-frequency resistance welding wire is installed; the opening valve is closed, and vacuumizing is carried out through the lower wire inlet hole and the lower wire outlet hole; when a pressure value displayed by the pressure gauge is stable, vacuumizing is stopped, and the lower wire inlet hole and the lower wire outlet hole are sealed; the opening valve is opened, and the lower wire inlet hole and the lower wire outlet holeare unsealed; and heat processing begins to be carried out on the high-frequency resistance welding wire. The anti-oxidation high-temperature rapid heating processing technology is relatively low ininert gas consumption amount, good in anti-oxidation protective effect and low in heat processing energy consumption.

Description

technical field [0001] The invention relates to the technical field of high-frequency resistance welding wire production technology, in particular to a high-frequency resistance welding wire anti-oxidation high-temperature rapid heat treatment process. Background technique [0002] Oxygen-free copper wire is a material used for welding operations obtained from large-length oxygen-free copper rods through multiple continuous drawing and diameter reduction processes. When oxygen-free copper wires are continuously drawn and reduced in diameter, they need On-line heat treatment is carried out to change the metallographic structure of the raw material of the oxygen-free copper wire and the semi-finished product, so as to facilitate the drawing and shrinking process and maintain the rigidity of the finished oxygen-free copper wire. [0003] The heat treatment process of oxygen-free copper wire semi-finished products in the production and processing process is mainly divided into l...

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Problems solved by technology

[0003] The heat treatment process of oxygen-free copper wire semi-finished products in the production and processing process is mainly divided into low-temperature heat treatment stage and high-temperature heat treatment stage. In the high-temperature heat treatment stage, oxygen-free copper wire is more vulnerable to oxidizing gases in the air. Surface oxidation of welding wire

In the prior art, protection is mainly carried out by passing inert gas into the heat treatment box, but the conventional heat treatment system consumes a large amount of inert gas, and the protection effect is not good. In addition, the circulation of inert gas takes away more heat, resulting in heat treatment higher energy consumption

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