High-sulfur steel rolling process

A technology with high sulfur content and craftsmanship, applied in metal rolling, manufacturing tools, metal rolling, etc., can solve problems such as slippage

Inactive Publication Date: 2020-01-14
BAOSTEEL SPECIAL STEEL SHAOGUAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a high-sulfur steel rolling process for the problem of very strict temperature control and slippage caused by excessive temperature

Method used

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  • High-sulfur steel rolling process

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Embodiment 1

[0020] See figure 1 , taking the stability and production efficiency of the rolling process of 20 high-sulfur steels as an example, it specifically includes the following steps:

[0021] Step 1: Select 4 steel grades of 1215YG high-sulfur steel continuous casting billets (w(S)=0.30%~0.40%), and 4 steel grades of 44SMn28 high-sulfur steel continuous casting billets (w(S) )=0.23%~0.33%), 4 SAE1215 high-sulfur steel continuous casting slabs (w(S)=0.26%~0.34%), 4 SAE1144 high-sulfur steel continuous casting slabs (w(S)=0.24% ~0.30%), 4 pieces of 1215CW high-sulfur steel continuous casting slabs (w(S)=0.26%~0.40%), the sections of 20 high-sulfur steel continuous casting slabs are all 320mm×425mm, check the surface condition of the continuous casting slabs , to ensure that the surface of the blank meets the appearance quality requirements;

[0022] Step 2: Divide 20 high-sulfur continuous casting slabs with good surface quality into two groups (Group 1: 2 pieces of 1215YG, 2 piece...

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PUM

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Abstract

The invention relates to a high-sulfur steel rolling process. The process comprises the following steps that a heating furnace is used for heating, a continuous casting billet is fed into the heatingfurnace to be heated according to a heating standard, and is discharged after meeting the process requirements; then scale on the surface of a steel billet is removed by using high-pressure water, rough rolling is conducted by adopting a two-roll reversing mill, and rough rolling is conducted by adopting a soft reduction rolling process to obtain a rolled billet; defects of the end part of the rolled billet are cut off, and then intermediate rolling and finish rolling are conducted by adopting a continuous rolling machine; and the finish rolled billet is cut to specific length by using a sheargauge, then segmenting is conducted by using an abrasive-disk cutter, so that round steel is obtained, the received round steel is subjected to finish machining such as chamfering, heat treatment andflaw detection. The problems that high-sulfur steel slips during rolling and end cracking is produced can be well solved, the process is simple and feasible, the requirements of stable production ofhigh-sulfur steel are further met, the production cost is effectively lowered, and the production efficiency is improved.

Description

technical field [0001] The invention relates to steel rolling, in particular to a high-sulfur steel rolling process. Background technique [0002] High-sulfur steel is mainly used for high-speed cutting of lathes to make mechanical parts. Its characteristic is that the sulfur content is several times higher than that of ordinary carbon steel (general carbon steel w(S)≤0.035%, high-sulfur steel w(S)=0.10%~0.40%), due to the increase of sulfur content, the improvement Improve the easy cutting performance of steel, thus greatly improving the cutting speed of machine tools. With the rapid development of the manufacturing industry, the use of domestic CNC lathes has increased year by year, and the application prospects of high-sulfur steels are broad. [0003] High-sulfur steel is one of the most challenging steel types in the field of steel rolling technology. In the solid state, the solubility of sulfur in iron is extremely small, but exists in the steel in the form of FeS....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/46B21B45/04B21B45/00B21B37/56B21B13/08B23P23/06
CPCB21B1/46B21B13/08B21B37/56B21B45/004B21B45/04B21B2265/10B23P23/06
Inventor 周小兵邱雄文冯富友李学保潘泽林孙应军莫杰辉张浩唐威杨洁陈建荣蓝胜根蒋志华
Owner BAOSTEEL SPECIAL STEEL SHAOGUAN CO LTD
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