Effect of VIM-ESR-VAR Triplex Melting Process on Cleanliness of Bearing Steel 9Cr88Mo

何曲波; 王东哲; 刘海定; 喻峰; 郑雅文

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Effect of VIM-ESR-VAR Triplex Melting Process on Cleanliness of Bearing Steel 9Cr88Mo

更新时间：2026-01-21

- Effect of VIM-ESR-VAR Triplex Melting Process on Cleanliness of Bearing Steel 9Cr88Mo
- Special Steel Vol. 39, Issue 1, Pages: 24-27(2018)
- 作者机构：
  
  1. 重庆材料研究院有限公司,重庆,400707
  2. 国家仪表功能材料工程技术研究中心,重庆,400707
  3. 耐腐蚀合金重庆市重点实验室,重庆,400707
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：04 August 2017，
  
  Online First：30 June 2022，
  
  Published：30 June 2018
- 稿件说明：
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何曲波, 王东哲, 刘海定, et al. Effect of VIM-ESR-VAR Triplex Melting Process on Cleanliness of Bearing Steel 9Cr88Mo[J]. Special Steel, 2018, 39(1): 24-27.
DOI：

何曲波, 王东哲, 刘海定, et al. Effect of VIM-ESR-VAR Triplex Melting Process on Cleanliness of Bearing Steel 9Cr88Mo[J]. Special Steel, 2018, 39(1): 24-27. DOI：

摘要

试验9Cr18Mo轴承钢(/%:0.98C

0.21Si，0.32Mn，0.005P，＜0.001S，16.95Cr，0.51Mo)经500 kg真空感应炉(VIM)-电渣重熔(ESR)-真空自耗重熔(VAR)三联工艺冶炼

锻造开坯并轧成Φ30 mm棒材。试验和分析了9Cr18Mo钢中的气体、有害元素的含量和非金属夹杂物。结果表明，三联工艺是提高轴承钢洁净度的有效方法，试验9Cr18Mo钢中氧含量0.0008%，氮含量0.0038%，硫含量＜0.001%，通过控制原材料的Ti和五害元素含量，成品材中Ti＜0.002%，Sn，As和Sb分别＜0.002%

Pb和Bi分别＜0.000 1%;三联工艺钢中非金属夹杂物数量少，90%以上的夹杂物尺寸小于3μm，达到了很高的洁净度水平。

Abstract

The tested bearing steel 9Cr18Mo (/% ： 0.98C

0.21 Si

0.32Mn

0.005P

＜0. 001S

16.95Cr

0.51Mo) is melted by 500 kg vacuum induction melting furnace (VIM) -electroslag remelting unit (ESR) -vacuum arc remelting unit (VAR) triplex process

forged breakdown and rolled to Φ30 mm bar products. The gas content

deleterious elements content and non-metallic inclusions in steel 9Crl8Mo are examined and analyzed. Results show that the triplex process is available to increase the cleanliness of bearing steel

the oxygen content in tested steel 9Cr18Mo is 0.0008%

nitrogen content is 0.0038% and the S content is ＜0. 001 %

and with controlling the Ti content and pentad-deleterious elements content in raw materials

in finished products the Ti content is ＜0.002%

the Sn

As and Sb content are respectively ＜0.002% and the Pb and Bi content are respectively ＜0.0001 % ； by triplex process the nonmetallic inclusions in steel is a little

and the inclusions with size less than 3μm amount are more than 90% of total inclusions up to quite high cleanliness level.Material Index Bearing Steel 9Cr18Mo

Cleanliness

VIM-KSR-VAR Triplex Melting Process

Inclusions.

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