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MORE CREEP RESISTANT TURBINE ROTOR AND PROCEDURES FOR REPAIR WELDING OF LOW ALLOY FERROUS TURBINE COMPONENTS
MORE CREEP RESISTANT TURBINE ROTOR AND PROCEDURES FOR REPAIR WELDING OF LOW ALLOY FERROUS TURBINE COMPONENTS
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机译:耐蠕变涡轮转子和用于低合金铁涡轮组件的焊接修复的方法
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摘要
A method for repairing worn surfaces of Cr-Mo-V steam turbine components includes specified alloy compositions and welding procedures that minimize weld stresses and cracking. These alloys exhibit improved creep and fatigue properties and are preferably deposited using a gas tungsten arc welding procedure. Bead sequencing, cooling side plates and the use of run-off tabs are also disclosed for minimizing welding defects in turbine rotors and discs.
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