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一、前言 高速柴油发动机排气阀高温工作端为4Cr14Ni14W2Mo奥氏体耐热钢。另一端为4Cr10Si2Mo马氏体结构钢,两者以摩擦焊焊接。
I. Introduction High-speed diesel engine exhaust valve working temperature 4Cr14Ni14W2Mo austenitic heat-resistant steel. The other end is 4Cr10Si2Mo martensitic structural steel, the two friction welding.