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对比研究了空冷、冷却介质通入量分别为15t/h、13t/h和11t/h时,铸铜冷却壁与其内铸钢管的界面结合状况和结合强度,并借助电子探针分析了内铸钢管、铸铜冷却壁之间的原子扩散状况。结果表明,冷却强度对Cu-Fe界面的结合状态具有重要的影响,冷却强度越大,Cu-Fe界面冶金结合越差。空冷钢管与铸铜冷却壁本体之间的原子互扩散较好,有约100μm的扩散过渡层,形成了良好的冶金结合界面,结合强度达到160MPa以上。
The interfacial bonding and bonding strength between cast-iron stave and its inner cast steel tube were compared by air-cooling and coolant flow rates of 15t / h, 13t / h and 11t / h, respectively. Cast steel pipe, bronze stave atomic diffusion between the conditions. The results show that the cooling strength has an important effect on the bonding state of the Cu-Fe interface. The larger the cooling strength, the poorer the metallurgical bonding at the Cu-Fe interface. The atomic interdiffusion between the air-cooled steel tube and the cast-iron stave body is better, with a diffusion transition layer of about 100 μm, forming a good metallurgical bonding interface with a bonding strength of over 160 MPa.