|
|
|
| Failure analysis and improvement of bar bearing steel in ultrasonic flaw detection |
| CUI Hongyan, WU Lei, ZHAO Yajuan |
| Nanjing Iron & Steel Co., Ltd., Nanjing 210044, China |
|
|
|
|
Abstract Some inclusions were detected on the near the surface of bar bearing steel in high frequency ultrasonic testing. The defects were observed and analyzed by metallographic microscope and scanning electron microscope. The results showed that the near surface defects in bearing steel belonged to non-metallic inclusions. The clogs on the crystallizer entry nozzle were dropped without floating upward, leading to large particle inclusions in the continuous casting billet. The inclusions were elongated in the rolling process. With the decrease of rolling specification, the inclusions tended to near the surface of the bar bearing steel. The high-quality casting billet could be obtained by taking the corresponding measures.
|
|
Received: 03 March 2023
|
|
|
|
| [1] |
王博,姜周华,龚伟,等.GCr15轴承钢夹杂物及全氧含量控制工艺分析[J].材料与冶金学报,2004,3(2):90.
|
| [2] |
杨文,张立峰,胡育新,等.轴承钢中夹杂物分析[J].北京科技大学学报,2014,36(增刊1):182.
|
| [3] |
杨宗毅.实用轧钢技术手册[M].北京:冶金工业出版社,1995.
|
| [4] |
刘栋,胡柏上,龙鹄,等.水浸超声波检测在轴承钢纯净度评估中的应用[J].南方金属,2020(3):37.
|
| [5] |
邵长禄,韩中超,姜浩,等.钢中宏观夹杂物的水浸超声检测[J].无损检测,2018,40(1):75.
|
| [6] |
缪新德,于春梅,石超民,等.轴承钢中钙铝酸盐夹杂物的形成及控制[J].北京科技大学学报,2007,29(8):771.
|
| [1] |
DENG Zhiyin, ZHU Miaoyong. Discussion on calcium treatment technology for clean steel refining[J]. Iron and Steel, 2023, 58(9): 104-115. |
| [2] |
ZHENG Yihao1,2，QI Jie1,2，ZHENG Xiang1,2，LIU Chengjun1,2，JIANG Maofa1,2. Dissolution behavior of CeAlO3 in mold fluxes with different w(CaO)/w(Al2O3)[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2023, 35(9): 1092-1099. |
| [3] |
SONG Guangjie, ZHU Haoran, JI Dengping, LIU Bin, FU Jianxun. Analysis of inclusions and carbides in 102Cr17Mo bearing steel billet[J]. Iron and Steel, 2023, 58(8): 157-168. |
| [4] |
LIANG Zhanlei，LI Tao，HAN Qiang，XU Tao，BAI Yansong，SUN Zhaoqi. Study on CO2 corrosion resistance of rare earth Ce to 5Cr steel[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2023, 35(7): 881-888. |
| [5] |
WANG Ju, LI Yang, JIANG Zhouhua, SUN Meng, MAO Yunqie, MA Shuai. Inclusion transformation mechanism of AISI 431 stainless steel during production[J]. Iron and Steel, 2023, 58(7): 54-63. |
| [6] |
YU Zheng, REN Ying, REN Qiang, ZHANG Lifeng. Effect of magnesium on inclusions and austenite grain in a GCr15 bearing steel[J]. Iron and Steel, 2023, 58(7): 133-143. |
|
|
|
|
2023, Vol. 41 
