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Method for efficiently preparing blind rivet steel

A high-efficiency, steel wire technology, applied in the direction of manufacturing tools, heat treatment equipment, process efficiency improvement, etc., can solve the problems of low production efficiency, high defect rate, and residual soap powder on the surface, etc., to improve the work hardening rate and the surface quality of finished products Qualified, the effect of reducing the problem of diameter out-of-tolerance

Pending Publication Date: 2021-02-26
江苏宝钢精密钢丝有限公司 +1
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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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  • Method for efficiently preparing blind rivet steel
  • Method for efficiently preparing blind rivet steel
  • Method for efficiently preparing blind rivet steel

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The following examples can enable those skilled in the art to understand the present invention more comprehensively, but the present invention is not limited to the scope of the described examples.

[0022] This specific embodiment adopts following technical scheme: as figure 1 shown, including the following steps:

[0023] S1. Raw material preparation: select low carbon steel wire rod.

[0024] S2. One-time drawing: the low-carbon steel wire rod is drawn to a diameter of 3.08-3.42 mm after large-scale drawing.

[0025] S3. Heat treatment: water bath quenching, traditional heating lead bath quenching, our company uses AQ water bath quenching, no heavy metal ion discharge, more environmentally friendly, by changing the length of the quenchi...

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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,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/18C21D1/44C21D1/60C21D8/06C21D9/52B21C1/02
CPCC21D1/18C21D1/60C21D1/44C21D8/065C21D9/525B21C1/02C21D2211/009Y02P10/20
Inventor 孙晓晖杨坤崔世云曹小峰张钦霞施展程相坤邓杨胡勇
Owner 江苏宝钢精密钢丝有限公司
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