Pretreatment production process of large-specification steel wire for copper-clad steel cladding

Abstract

The invention discloses a pretreatment production process of a large-specification steel wire for copper-clad steel cladding. The pretreatment production process sequentially comprises the following steps: mechanical shucking, abrasive belt grinding, horizontal wiredrawing, paying off, tubular ammonia decomposition tempering degreasing, cooling, fully-closed acid pickling, four-stage back flushing, drying and winding up. The problems that as for treatment by a traditional process, binding force between copper and steel is poor, the thicknesses of the exposed steel and a copper layer are uneven, and acid mist pollution exists are solved, and according to the pretreatment process of the large-specification steel wire, the production process is environmentally friendly, the surface of the steel wire is bright, clean and rounding, in the subsequent cladding process, continuous production is achieved, and thus the steel wire and a copper strip are metallurgically bonded.

Description

technical field [0001] The invention relates to a production process of copper-clad steel, in particular to a production process for pre-treatment of large-size steel wires used for cladding copper-clad steel. Background technique [0002] For a long time, in the fields of communications, transportation, grounding systems, etc., my country has used pure copper as wires. However, with the rapid development of science and technology, higher standards have been set for the performance of wires. The emergence of bimetallic wires has solved the problem very well. this problem. Bimetal wire is a new type of material integrating two metals with different properties, which overcomes the shortcomings of a single metal, not only comprehensively utilizes the properties of a single metal, but also reduces production costs. Copper-clad steel bimetal wire uses steel wire as the core matrix, and concentrically, uniformly and continuously coats a layer of copper on its surface by mechanical...

AI Technical Summary

Problems solved by technology

This process method is simple, but there are also high volatility of hydrochloric acid and poor steel wire surface treatment, which is not suitable for processing large-scale steel wires, and the formed copper-clad steel wire rods are detected and analyzed by metallographic microscopy (such as figure 2 As shown), the copper-clad steel bonding force is not good, the thickness of exposed steel and copper layer is uneven, and the original production process needs to be improved urgently.

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