One of the key problems by diffusion-rolling bonding with small reduction for carbon steel plates is the bonding assistant coat.Abonding assitant coat used below 850℃was developed.It contained copper as basic element...One of the key problems by diffusion-rolling bonding with small reduction for carbon steel plates is the bonding assistant coat.Abonding assitant coat used below 850℃was developed.It contained copper as basic element and zinc as main alloy element.Other small elements and rear metals were added to decrease the melting point and to obtain a better clouding and bigh plasticity.Based on the theory of brazing and transient liquid diffusion welding,two carbon steel plates were rolled with small reduction by using self-made bonding assistant coat.Temperature,pressure and holding time are the main technology parameters for controlling the process of diffusion-rolling.The results show that the bonding strength is the greatest when the bonding temperature is 830℃,holding time is 3 min and the reduction rate is 9%.展开更多
摘要One of the key problems by diffusion-rolling bonding with small reduction for carbon steel plates is the bonding assistant coat.Abonding assitant coat used below 850℃was developed.It contained copper as basic element and zinc as main alloy element.Other small elements and rear metals were added to decrease the melting point and to obtain a better clouding and bigh plasticity.Based on the theory of brazing and transient liquid diffusion welding,two carbon steel plates were rolled with small reduction by using self-made bonding assistant coat.Temperature,pressure and holding time are the main technology parameters for controlling the process of diffusion-rolling.The results show that the bonding strength is the greatest when the bonding temperature is 830℃,holding time is 3 min and the reduction rate is 9%.