The increasing or decreasing of carbon in the deposit metal is depends on the carbon content of welding material.The critical value of carbon increasing for FCW is about 0.05%.

• 熔敷金属中的含碳量与焊接材料中的含碳量相比是增加还是减少,取决于焊接材料含碳量的多少和氧化性的强弱。