A production method of cold-rolled extra-thick and high-precision motor shell steel

Abstract

The invention discloses a production method of cold-rolled ultra-thick and high-precision motor shell steel, which is implemented in steps. 1) The welding process parameters are as follows: strip steel thickness 4.0-6.0mm, welding speed 2.5-3.5, welding power 7900, defocus Quantity-8, welding pressure 20-30, butt gap 0.2-0.3os, butt gap 0.2-0.3ds, wire filling speed 0, parameters without marked units, the units of which are in the field of cold-rolled solid-state laser welding machines 2) The process optimization of the rolling model of the rolling mill is as follows: Due to the limitation of the thickness gauge, temporarily throwing off one gauge before it does not participate in thickness control production, and increasing the reduction of one gauge, exporting one gauge The thickness setting value is controlled below 4.5mm. The invention can expand the cold-rolled products, improve the quality of the steel plate, has important practical value in production, and is successfully applied to large-scale industrial production.

Description

technical field [0001] The invention relates to a production method of cold-rolled extra-thick and high-precision motor casing steel. Background technique [0002] The raw material thickness of the strip steel is 3.0mm-6.0mm, and the thickness of the finished product is 2.0-3.0mm after being rolled by an acid-tandem rolling mill, and the finished product has high precision. In June 2018, after the transformation of acid rolling at Bayi Iron and Steel Co., Ltd., with the improvement of equipment capacity, Bayi Iron and Steel Co. For the development and trial production of new rolled product electrode shell steel, by optimizing process parameters and improving the functional accuracy of equipment, we have organized trial production of new product electrode shell steel many times to expand the capacity of cold-rolled products and improve the competitiveness of the cold-rolled market. The electrode shell is one of the components of the self-sintered electrode. It is a cylinder ...

AI Technical Summary

Problems solved by technology

However, Bayi Iron and Steel has only one cold rolling line. In order to meet the different needs of different customers, it needs to realize continuous production of multiple specifications and varieties. Limited by the functional conditions of the equipment of the cold rolling line, the production has encountered a series of bottlenecks.