| ZHANG Chao,LYU Jin-jin,BAI Dan,HONG Jian-guo,HAN Hong-song,ZHANG Yu-wen,LU Xiong-gang.Research Progress of Surface Protection Technology for Tuyere Small Sleeve of Blast Furnace[J],50(4):135-150 |
| Research Progress of Surface Protection Technology for Tuyere Small Sleeve of Blast Furnace |
| Received:September 08, 2020 Revised:November 17, 2020 |
| View Full Text View/Add Comment Download reader |
| DOI：10.16490/j.cnki.issn.1001-3660.2021.04.013 |
| KeyWord:tuyere small sleeve pure copper failure mechanism co-penetration surfacing welding spraying performance |
| Author | Institution |
| ZHANG Chao |
State Key Laboratory of Advanced Special Steel, Shanghai University, Shanghai , China |
| LYU Jin-jin |
State Key Laboratory of Advanced Special Steel, Shanghai University, Shanghai , China |
| BAI Dan |
State Key Laboratory of Advanced Special Steel, Shanghai University, Shanghai , China |
| HONG Jian-guo |
State Key Laboratory of Advanced Special Steel, Shanghai University, Shanghai , China;Shanghai Meishan Iron and Steel Limited by Share Ltd, Nanjing , China |
| HAN Hong-song |
Shanghai Meishan Iron and Steel Limited by Share Ltd, Nanjing , China |
| ZHANG Yu-wen |
State Key Laboratory of Advanced Special Steel, Shanghai University, Shanghai , China |
| LU Xiong-gang |
State Key Laboratory of Advanced Special Steel, Shanghai University, Shanghai , China |
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| Abstract: |
| Firstly, several main failure modes and common failure positions of tuyere small sleeve of blast furnace were analyzed, and the problems of tuyere small sleeve at present were pointed out. Then, the research status of surface protection technology for tuyere small sleeve (copper materials) was systematically reviewed, and the application progress of co-penetration, surfacing welding and spraying were mainly introduced. The technical principles, material selection and strengthening mechanism of various processes were summarized. By comparing the three processes, it is concluded that the surfacing welding process can obtain the wear-resistant coatings which is metallurgically bonded with copper substrate, which has the most application prospect. But the current research focused on improving the hardness and wear resistance of copper surface, while ignoring the effect of protective coatings on thermal conductivity. Therefore, preparing a gradient coating on the surface of tuyere small sleeve which is metallurgically combined with the substrate, has excellent working performance, and has little influence on the thermal conductivity of overall is an important research direction for the longevity of the tuyere small sleeve in the future. |
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