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| 250 t转炉烟罩加料溜槽寿命研究及其焊接工艺 | |
| 引用本文： | 吴佑明,王玉涛,黄文豪. 250 t转炉烟罩加料溜槽寿命研究及其焊接工艺[J]. 钢铁研究, 2006, 34(1): 38-40 |
| 作者姓名： | 吴佑明 王玉涛 黄文豪 |
| 作者单位： | 1. 武汉钢铁集团公司,金属结构公司,湖北,武汉,430081 2. 武汉钢铁集团公司,技术中心,湖北,武汉,430081 3. 武汉钢铁集团公司,第三炼钢厂,湖北,武汉,430083 |
| 摘 要： | 针对转炉烟罩加料溜槽寿命过短的问题进行失效分析，发现堆焊层厚度不足，焊后热处理效果不佳，裂纹扩展，宽窄不均，呈现热疲劳特征，并可见碳化物和共晶组织脱落。根据加料溜槽底面及侧面工作状态的不同，底面改用堆焊层硬度稍高的焊条堆焊，使堆焊层耐磨性增加，侧面改用韧性较好、焊态硬度稍低的不锈钢堆焊焊条堆焊，既改进了溜槽性能，又降低了生产成本。 |
| 关 键 词： | 加料溜槽 寿命 失效 堆焊焊条 焊接工艺 |
| 文章编号： | 1001-1447（2006）01-0038-03 |
| 收稿时间： | 2005-02-16 |
| 修稿时间： | 2005-02-16 |
Study on Service Life of Charging Chute of Fume Hood of 250 t Converter and Chute Welding Technology |
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| WU You-ming,WANG Yu-tao,HUANG Wen-hao. Study on Service Life of Charging Chute of Fume Hood of 250 t Converter and Chute Welding Technology[J]. Research on Iron and Steel, 2006, 34(1): 38-40 | |
| Authors: | WU You-ming WANG Yu-tao HUANG Wen-hao |
| Affiliation: | 1. Metallic Construction Corp, WISCO, Wuhan 430081, China; 2. Technology Center,WISCO,Wuhan 430081, China; 3. No. 3 Steelmaking Plant, WISCO, Wuhan 430083, China |
| Abstract: | This paper studies the problem of low service life of charging chute of fume hood of 250 t converter.The failure reasons can be attributed as follows: the thickness of welding overlay was not large enough;the effect of treatment after welding was not good;the cracks expanded with the feature of thermal fatigue,carbides and eutectic structure dropped out,etc.Based on different working conditions for the bottom and side surface of charging chute,high hardness welding materials were used on the bottom surface so as to improve its abrasion-resistance,and stainless welding materials with better toughness and less hardness were adopted on the side surface.As a result,the service life increased and the production cost reduced. |
| Keywords: | charging chute service life failure welding electrode welding technology |
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