Production method of high-strength steel rope

Abstract

The invention provides a production method of a high-strength steel rope. The production method of the high-strength steel rope is characterized that low carbon is selected and used as raw materials of the steel rope, and the production technology comprises a first step of surface processing, wherein wire materials are placed on a pay-off rack, the diameter of the wire materials is 5.5mm, hot-rolled oxide-scale is eliminated through mechanical dephophorization equipment, high-power ultrasonic cleaning is conducted on the wire materials, the wire materials enter phosphating equipment, phosphating is conducted on the wire materials, the wire materials enter drying equipment and are dried finally, and preprocessed wire materials are obtained; a second step of drawing, wherein the preprocessed wire materials obtained from the first step are placed on a drawing machine, multi-pass drawing is conducted on the preprocessed wire materials, semi-finished wire materials are obtained, and winding up is conducted through a spool; a third step of water bath heat treatment and galvanization, wherein the semi-finished wire materials obtained in the second step are placed on the pay-off rack, the semi-finished wire materials are heated in a four-section form heat treatment furnace, quenching, drying, galvanization and cooling are conducted on the semi-finished wire materials, semi-finished wire materials are obtained, and winding up is conducted; a fourth step of wet type drawing, wherein the semi-finished wire materials obtained in the third step are placed on the drawing machine, multi-pass drawing is conducted on the semi-finished wire materials, the compression angle of a wire-drawing die of each pass is 13-14 degrees, dedicated lubricating agent is used as lubricating agent, the concentration of the dedicated lubricating agent is 2%-3%, finished wire materials are obtained, and winding up is conducted through a spool; a fifth step of stranding and rope forming, wherein the finished wire materials are placed on a stranding machine, stranding and laying-up are conducted, and the finished steel stranded rope is obtained.

Description

technical field [0001] The invention relates to a production method of high-strength steel rope. Background technique [0002] Because of its high strength, good toughness, and fine and uniform heat treatment structure, high carbon steel can meet the needs of drawing, twisting and performance uniformity, so it is used as raw material in the traditional steel rope manufacturing industry. The processing route is roughly as follows: removing hot-rolled scale from raw wire rods—dry drawing—(intermediate heat treatment) normalizing—dry drawing (compression rate is about 97%)—twist strands and ropes. However, due to its large work hardening coefficient, that is, after the compression rate exceeds 85% during processing, the strength rises sharply, resulting in deterioration of its toughness. Therefore, in the process of processing, it needs to undergo multiple heat treatments to eliminate its processing hardness and ensure the final performance. However, this not only causes a wa...

AI Technical Summary

Problems solved by technology

However, this not only causes a waste of resources, but also hinders the improvement of labor productivity.

In addition, because high-carbon steel has high strength and hardness, the energy consumption and mold consumption are high in the production process, and the broken wire rate is difficult to control

[0003] However, low-carbon steel does not have the advantages of high-carbon steel. Its production process is long, energy consumption, mold consumption are high, broken wire rate is high, and labor productivity is low.