Short-process producing and processing technology and equipment for cold rolling ultrahigh strength steel

A technology of ultra-high-strength steel and processing technology, applied in metal processing equipment, metal rolling, manufacturing tools, etc., can solve the problems of continuous annealing process, such as high energy consumption, inability to fit rolling deformation, and reduce production efficiency, so as to reduce energy consumption Consumption, shorten the production process, improve the effect of performance

Active Publication Date: 2016-03-23
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcomings: the continuous annealing process of ultra-high-strength steel consumes a lot of energy, the production cost is high, the production efficiency is

Method used

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  • Short-process producing and processing technology and equipment for cold rolling ultrahigh strength steel
  • Short-process producing and processing technology and equipment for cold rolling ultrahigh strength steel

Examples

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Effect test

Embodiment 1

[0024] A short-process production and processing process of cold-rolled ultra-high-strength steel, which mainly includes: hot-rolled strip steel with incoming materials, pickling, rolling, heat treatment, stamping and quenching, finishing, and finished and semi-finished products. The specific steps are as follows:

[0025] (1) After the incoming hot-rolled steel strip is processed by pre-rolling processes such as pickling, cold rolling is carried out, and the cold rolling is fully continuous cold rolling or reversible cold rolling;

[0026] (2) After rolling to the required size, heat treatment and comprehensive treatment of deformation and phase transformation are carried out. The heat treatment in this step includes three stages, which are respectively preheating section, heating section, and soaking section; Heating to 150°C; the heating section continues to heat the strip steel to a temperature above 700°C; the soaking section keeps the strip steel at the temperature of the...

Embodiment 2

[0038] A short-process production and processing technology of cold-rolled ultra-high-strength steel, the specific steps are as follows:

[0039] (1) After the incoming hot-rolled steel strip is processed by pre-rolling processes such as pickling, cold rolling is carried out, and the cold rolling is fully continuous cold rolling or reversible cold rolling;

[0040] (2) After rolling to the required size, heat treatment and comprehensive treatment of deformation and phase transformation are carried out. The heat treatment in this step includes three stages, which are respectively preheating section, heating section, and soaking section; Heating to 200°C; the heating section continues to heat the strip steel to a temperature above 950°C; the soaking section keeps the strip steel at the temperature of the heating section and keeps it warm for 5 minutes; Control the tension of strip steel at 5.0kg / mm 2 , so that the strip steel can further improve the microstructure and comprehen...

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Abstract

The invention discloses a short-process producing and processing technology for cold rolling ultrahigh strength steel. The short-process producing and processing technology comprises the following steps: hot rolled strip steel, serving as an incoming material, is treated by procedures before rolling such as acid pickling and the like, cold rolling, heat treatment and deformation and phase transition comprehensive treatment, enters a loop after the heat treatment and the deformation and phase transition comprehensive treatment, is suitable for changes of the rolling velocity and the punch velocity by regulating the loop capacity and can enter a punching and quenching technology after being shorn with fixed length; and after the ultrahigh strength steel is finished, a finished or semi-finished punching part is obtained. Short-process producing and processing equipment for cold rolling the ultrahigh strength steel comprises a cold continuous rolling unit, a degreasing device inlet frame, a degreasing device, a looping tower, an annealing furnace front tension controlling device, an annealing furnace, an annealing furnace back tension controlling device, a collecting box and the like. With the adoption of the short-process producing and processing process and equipment, the energy consumption is reduced, the energy is saved, and the production cost is lowered; and by adding the deformation technology in the heat treatment process of the ultrahigh strength steel, the purpose of synchronous deformation and phase transition of the ultrahigh strength steel is realized, and the using performance of the strip steel is improved.

Description

technical field [0001] The invention relates to the technical field of metallurgical processing. Background technique [0002] The production and processing of ultra-high-strength steel strips have the characteristics of high rolling deformation resistance. After cold rolling, annealing treatment is required to eliminate work hardening and residual stress inside the strip. After annealing, ultra-high-strength steel cold-rolled sheets are obtained. The production of ultra-high-strength steel requires continuous annealing, which improves production efficiency to a large extent compared with traditional bell annealing. After the ultra-high-strength steel cold-rolled plate is obtained, deep processing is required to obtain the final product, such as deep drawing and stamping. Stamping quenching is a hot stamping method for producing high-strength steel automobile plates, and it is also a deep processing technology for ultra-high-strength steel. In the existing production proce...

Claims

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Application Information

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IPC IPC(8): B21B1/22B21B15/00C21D8/04
CPCB21B1/22B21B15/0007B21B15/0035B21B2001/221C21D8/0452
Inventor 彭艳邢鹏达孙建亮王玉辉刘才溢陈国兴
Owner YANSHAN UNIV
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