【摘要】 用氧-乙炔焰加熔剂助熔一步法,在12Cr1MoV珠光体耐热钢和25#钢高温高压阀门密封面基体上喷熔铁547B合金粉末,对喷熔工艺和喷熔层的硬度、时效硬化特性、热耐久性能、抗擦伤性能等使用性能进行了较为系统的试验,研究证明:用喷熔铁547B合金粉末工艺修复电站高温高压阀门密封面裂纹是可行的。更多还原

【Abstract】 Fe547B alloy powder spray melted coating was sprayed on high temperature and high pressure valve sealant made from 12Cr1MoV steel with oxyacetylene flame put in fluxing compound one-step method spraying process,test and study for spraying process and hardness,age-hardening characteristic,thermal durability and scratching resistant were carried out.The results have proved that healing up of cracking on high temperature and high pressure valve sealant by spraying Fe547B alloy powder is certainly feasible.更多还原