Silvery bright steel wire acid-washing-free and drawing treatment process

Abstract

The invention discloses a silvery bright steel wire acid-washing-free and drawing treatment process. The silvery bright steel wire acid-washing-free and drawing treatment process comprises the following steps: (1) mechanically shelling: enabling a wire material to pass through a plurality of rolling wheels which mutually form angles by a mechanical rust-removing device; (2) brushing, sweeping and polishing: increasing a belt sander after the wire material is mechanically shelled and before the wire material enters a mould box, and brushing, sweeping and polishing residual oxide on the surface of the wire material as required; and (3) drawing: adopts a rolling and drawing mould and a pressure mould to cooperate with each other. Through mutual cooperation of the rolling wheels and the belt sander, the rust-removing effect of the wire material is obviously improved and the produced finished product achieves the effect that the surface is silvery bright; meanwhile, the existing acid-washing surface treatment process is replaced, so the production efficiency is improved; and a drawing process which combines the rolling and drawing mould with the pressure mould is adopted, so in the wire material drawn by the process, the processing hardening degree is low, the oxide skin residual ratio is low, the surface flatness is high, the surface lubricating film coverage rate is high, one thin layer of film covers the surface of the wire material, and the subsequent re-processing and cleaning effects are good.

Description

technical field [0001] The invention relates to the technology in the field of wire rod production and processing, in particular to a pickling-free drawing treatment process for bright silver steel wire. Background technique [0002] At present, the surface treatment technology widely used in my country's wire drawing industry consists of multiple processes such as pickling, rinsing, and ash coating. The acid mist, acid-containing wastewater and waste acid caused by pickling cause environmental problems, requiring more investment and treatment costs. , And the phosphating that is matched with the pickling process also results in waste water containing phosphorus and zinc. However, because the pickling technology is easy to master, the quality is stable and the cost is moderate, many manufacturers are unwilling to give up. The wire drawing industry has high operating costs, serious environmental pollution, and poor working conditions for operators, which have always been majo...

AI Technical Summary

Problems solved by technology

In fact, my country's steel wire drawing has long adopted the non-pickling technology, which is called "shelling", a method that uses bending deformation to remove scale. However, due to the slow drawing speed of this method, the derusting ability is not ideal, and the drawn There are many defects on the surface of the wire, and it is still not recognized by the majority of wire drawing manufacturers