冷风冲天炉的生产过程控制

Production Process Control of Cold Blast Cupola

为保证铸件材质的一致性，获得内在质量稳定的优质铸件，对两排大间距冲天炉的修炉工艺参数进行了改进，分析了焦炭质量、风量控制对熔炼过程的影响，通过孕育处理和化学成分调整，在提高力学性能的同时，确保铸件的内在质量。生产结果表明，冷风冲天炉结构及现场熔炼过程控制的改进，使铸件的质量稳定，减少了因缩松、裂纹及性能不合格产生的废品。

To keep the consistency of casting material and obtain the castings with stable quality, the repair process parameters of spacious twin-tuyeres cupola were improved. The effects of coke quality and blast volume control on melting process were analyzed. The mechanical properties were improved by inoculation and adjusting chemical composition, in the meanwhile the quality of castings were ensured. Production results show that the improvement of cold blast cupola structure and melting process control can stabilize the quality of castings to reduce the defectives due to dispersed shrinkage, crack and unqualified performance.