Method for efficiently preparing blind rivet steel

Abstract

The invention discloses a method for efficiently preparing blind rivet steel, and relates to the technical field of preparation of the blind rivet steel. The preparation method comprises the followingsteps of preparation of raw materials; primary drawing; heat treatment, wherein water bath quenching is adopted, the length of a quenching section is changed in the quenching process, staged heatingis adopted in the heat treatment process, steel wires form good oxide skin in the first two stages, and structural transformation is completed in the later four stages; secondary medium drawing, wherein the total drawing compression ratio is controlled within 70%, and the compression ratio of the last pass is controlled within 10%; powder removing, wherein residual soap powder of the drawn steel wires is removed through a powder removing box; and reeling. The method has the advantages that water bath quenching is adopted during heat treatment and is more environmentally friendly, staged heating is adopted during heat treatment, the quenching section length is changed, and the performance of the steel wires is well controlled; it is guaranteed that the surface quality of finished products reaches the standard, and the out-of-tolerance problem of the diameter is effectively reduced; and the content of residual soap powder on the surfaces of the steel wires is effectively reduced, and thepreparation efficiency is high.

Description

technical field [0001] The invention relates to the technical field of rivet steel preparation, in particular to a method for preparing high-efficiency rivet steel. Background technique [0002] As the raw material of rivets, rivet steel is widely used, but the production process is generally extensive, and the steps are lengthy and inefficient. With the development of the steel wire production process in recent years, downstream processes have gradually realized the importance of the control of the strength, diameter, and surface residual soap powder of the rivet steel, and then the requirements for the strength, diameter, and surface residual soap powder of the rivet steel have gradually increased. However, the traditional technology has basically been unable to meet the increasing demand. [0003] The patent with application number 201510897889.2 discloses an ultra-high-strength steel wire rope and its drawing method. The steel wire produced by it has a certain strength,...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved in the present invention is to provide a method for preparing high-efficiency rivet steel, which can solve the problems of difficult control of the production performance of rivet steel, high defect rate of diameter out of tolerance, large amount of residual soap powder on the surface and low production efficiency

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