冷轧钢带热处理脱碳产生的原因及解决方案

通过对钢带热处理过程脱碳机理的研究，系统地分析了钢带在罩式炉、氨分解气保护情况下，退火脱碳产生的原因。从设备方面、操作方面和工艺方面进行了分析、试验，提出了设备改进方案，对操作方法和热处理工艺进行了优化，取得了明显的成效，脱碳层深度超标情况大幅减少，产品脱碳情况基本达到国家标准，提高了冷带产品实物质量。

Discussion on Reasons for Decarburization of Cold Rolled Steel Strip during Heat Treatment and Its Countermeasures

Based on the research on the decarburization mechanism of steel strip during heat treatment, the reasons for decarburization of the steel strip in belltype annealing furnace protected by ammonia decomposition gas were systematically analyzed. The analysis and test were made in terms of equipment, operation and produc tion process, thus the improvement ways of the equipment were proposed, which included operation and heat treatment process. After improvement unqualified decarhurization depth was greatly reduced and the deearburi zation essentially met the national standard.