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排气伐是汽车发动机中最关键的零件,它直接影响到发动机的寿命和性能。国内目前普遍采用的是4Cr10Si2Mo马氏体钢,这种钢寿命很低,经常发生因气伐被烧断而打坏整个发
Exhaust cut is the most critical part of the car engine, which directly affects the life and performance of the engine. Currently commonly used in the country is 4Cr10Si2Mo martensitic steel, this steel is very low life expectancy, often due to gas cut was burned and damaged the entire hair