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0前言高炉冷却壁内的45无缝钢管冷却管的外表面，在高温铁液浇注冷却壁时受热，易被氧化和渗碳，使钢管变脆。延长高炉镶砖冷却壁的寿命是延长高炉炉身寿命的重要途径。保持冷却管的原有塑性，即使冷却壁长期经受高温开裂时，但水管有一定的塑性不产生裂纹，冷却壁就可以继续
0 Introduction Blast furnace cooling wall 45 seamless steel pipe cooling pipe surface, high temperature molten iron cooling wall when the heat, easily oxidized and carburized, the pipe becomes brittle. Extending the life of blast furnace lining brick cooling wall is an important way to extend the life of blast furnace shaft. Maintaining the original plasticity of the cooling pipe, even if the cooling wall is subjected to long-term high temperature cracking, but the pipe has a certain plasticity does not crack, the cooling wall can continue