|
|
|
| Control and improvement of oxide scale on the surface of hotrolled highstrength steel |
| MA Cong,WANG Yongguo,LIU Yang,WU Shengfu,GU Hairong,CUI Lei |
| Technology Center, Maanshan Iron and Steel Co., Ltd., Ma′anshan 243000, China |
|
|
|
Abstract In the hot forming process, the iron oxide scale was not fully removed by shot blasting, resulting in a layer of black iron oxide scale on the surface after heating, which then affected the measurement and precise control of the heating temperature. The box heating furnace, field emission electron microscope and electron backscatter diffractometer were used to analyze the change rule of oxide scale thickness and structure of 460 MPa automobile axle housing steel under two different hot rolling process conditions. The studies showed that the oxide scale structure under the condition of Process II (shorttime steel burning at low temperature, high temperature final rolling, coiling process) was easier to be removed by shot blasting. After shot blasting and heating simulation experiments, there was no oxide scale covering on the surface, which could meet the requirements of temperature measurement.
|
|
Received: 27 August 2021
|
|
|
|
| [1] |
CAO Guang-ming, SHAN Wen-chao, LIU Xiao-jiang, WANG Chen-yang. High temperature oxidation behavior of Fe-2.2%Si steel in different atmosphere[J]. Iron and Steel, 2022, 57(8): 132-142. |
| [2] |
SHI Xuexing,JU Xinhua,YAN Chunlian,WEN Juan. Effect of holding time at 850 ℃ on intergranular oxidation layer of 15CrMo steel[J]. PHYSICS EXAMINATION AND TESTING, 2022, 40(6): 1-. |
| [3] |
WANG En-rui, CHEN Zi-gang, LIU Feng-lin, LIU Tian-wu, ZHANG Ming. Oxide scale structure of hot rolled structural steel and its effect on pickling quality[J]. Iron and Steel, 2022, 57(3): 71-78. |
| [4] |
ZHANG Fu-jun, YANG Shu-feng, WANG Yong, HUANG Cheng-yong, LI Jing-sheng, YANG Jing-bo. Surface quality control of fine blanking steel slab[J]. CONTINUOUS CASTING, 2022, 41(2): 20-24. |
| [5] |
ZOU Ying, LIU Hua-sai, HAN Yun, TENG Hua-xiang, JIANG Guang-rui. Research and development progress of hot-rolled galvanized high-strength steel for automobile[J]. Iron and Steel, 2022, 57(12): 118-130. |
| [6] |
ZHAO Li-jie, ZHANG Fang, PENG Jun, CHANG Hong-tao, MING Shou-lu, ZHU Rui-zong. Chemical composition and pore control of porous stainless steel prepared by rolling steel skin[J]. Iron and Steel, 2022, 57(1): 133-142. |
|
|
|
|
2022, Vol. 40 
