Influence of Rolling Reduction on Pearlite Grain Size in Heavy Rail of Steel U75V

王晓丽; 刘霞; 史凤武; 周丽; 宋波

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Influence of Rolling Reduction on Pearlite Grain Size in Heavy Rail of Steel U75V

更新时间：2026-01-21

- Influence of Rolling Reduction on Pearlite Grain Size in Heavy Rail of Steel U75V
- Special Steel Vol. 30, Issue 6, Pages: 61-62(2009)
- 作者机构：
  
  1. 北京科技大学冶金与生态工程学院,北京,100083
  2. 包头钢铁职业技术学院,包头,014010
  3. 包钢技术中心,包头,014010
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：30 June 2009，
  
  Online First：30 November 2022，
  
  Published：30 November 2009
- 稿件说明：
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王晓丽, 刘霞, 史凤武, et al. Influence of Rolling Reduction on Pearlite Grain Size in Heavy Rail of Steel U75V[J]. Special Steel, 2009, 30(6): 61-62.
DOI：

王晓丽, 刘霞, 史凤武, et al. Influence of Rolling Reduction on Pearlite Grain Size in Heavy Rail of Steel U75V[J]. Special Steel, 2009, 30(6): 61-62. DOI：

摘要

U75V钢重轨由280 mm×380 mm铸坯经14道次粗轧(BD1)-中轧(BD2)和CCS 6道次精轧(UR

、ER、UR

、UR

、EF、UF)而成。用金相显微镜观察U75V重轨钢不同道次轧制变形试样的组织。结果表明

随重轨钢BD1E、BD2B、UR1和UF道次压缩比的增加

重轨头部、腰部和底部的珠光体晶粒度等级分别由6.0～6.5、6.0～6.5、6.0～6.5升至8.0～8.5、7.5～8.0、8.0～8.5

珠光体片层间距(μm)分别由0.51、0.41、0.49降至0.29、0.27、0.25

从而有利于提高重轨的力学性能。

Abstract

Heavy rail of steel U75 V is rolled by 14 passes rough-rolling (BD1) - intermediate rolling (BD2) and 6 passes CCS finishing rolling ( UR

UR2

EF and UF) from 280 mm x 380 mm cast bloom. The structure in deformed sample of heavy rail of steel U75V at different pass was observed by using metallographic microscope. Results show that with increasing pass reduction ratio of heavy rail steel at BD1 E

BD2B

]

and UF

the ratings of pearlite grain size at head

waist and bottom of heavy rail increase respectively from 6.0〜6. 5

6. 0 ~ 6. 5 and 6. 0 ~ 6. 5 to 8. 0 ~ 8. 5

7. 5 〜 8. 0 and 8. 0 ~ 8. 5

at that the spaces between lamellae of pearlite decrease respectively from 0. 51 |±m

0. 41 μm and 0. 49 to 0. 29 μm

0. 27 μm and 0. 25 μm

that are available to increase the mechanical properties of heavy rail.

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