Rolling Cooling Process for Reducing Iron Scale of Low Carbon Steel Wire Rod for Wire Drawing

Abstract

The invention discloses a rolling cooling technology for a low-carbon steel wire rod oxidized iron sheet for reducing drawn wire. The rolling cooling technology comprises the following steps of: (1) firstly, controlling the spinning temperature of an altitude machine set for producing a wire drawing steel wire rod within the range of 920+ / -20DEG C, and distributing heat-preservation covers with the lengths of 6m on a collecting roller way; (2) only when the room temperature is more than 28 DEG C, starting final set of fans within a cooling region, wherein the air quantity is 850000m<3> / h; opening the heat-preservation covers with the lengths of 6m at the front and the back of a heat-preservation region at the same time, and closing the heat-preservation cover in the middle of the heat-preservation region; when the environment temperature is lower than -15DEG C, only opening the heat-preservation covers with the lengths of 6m at the front and the back of the heat-preservation region at the same time, and closing the heat-preservation cover in the middle of the heat-preservation region; when environment temperature is lower than -15DEG C, closing all air doors; and controlling the temperature of an outlet of the heat-preservation region to be 760DEG C, wherein the wire rod cooling speed is 1.1 DEG C / s within the cooling region; (3) when the wire rod is charged into a transporting roller way to be transported to a far place which is far away from the tail end at 28m, carrying out forced cooling at the place; and (4) compulsorily cooling the wire rod to be less than 550 DEG C before packing in a winding way, wherein the cooling speed is 3.75 DEG C / s.

Description

technical field [0001] The invention relates to a rolling cooling process for reducing iron oxide scales of low-carbon steel wire rods for wire drawing. Background technique [0002] Low-carbon steel wire rod for wire drawing is widely used, and it is the main raw material for common civil galvanized wire, cold drawn wire, welding wire, galvanized wire for armored cables, binding wire, nail making and other wire products. There are many varieties and specifications of steel wire, and the product performance and requirements are also very different. Often the same steel wire has several different production processes. There are also some alloy steel wires that are difficult to cold-draw due to poor plasticity, and the production process of these steel wires is more complicated. For low carbon steel wire, the general production process consists of four parts: surface preparation of raw materials (shelling, pickling, ultrasonic descaling, etc.), semi-finished or finished steel...

AI Technical Summary

Problems solved by technology

There are also some alloy steel wires that are difficult to be cold-drawn due to their poor plasticity. The production process of these steel wires is more complicated.