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钎焊-热轧复合工艺制备不锈钢/碳钢复合板

Brazing/hot-rolling technique for preparation of stainless steel carbon steel cladding plate

  • 摘要: 针对不锈钢/碳钢复合板爆炸-轧制复合工艺存在的主要问题,提出了钎焊-热轧制备新技术,研究了主要工艺参数对钎焊复合板结合强度的影响,分析了钎焊复合板热轧的结合机理,测试了复合板的主要力学性能。结果表明,采用自制的银基钎料可以实现不锈钢/碳钢有效的钎焊结合,理想的钎焊工艺参数为:钎焊温度755~770℃,钎焊时间2.5~3min。热轧过程中钎料层表现出了良好的塑性,压下率为40%时,轧后钎料层未出现断裂、分层。轧制中钎料层同基体形成的金属键显著提高了不锈钢/钎料界面的结合强度,热轧复合板的抗剪强度达到了342.6MPa。

     

    Abstract: Aiming at the main problems in the explosion-rolling bonding process of stainless steel/carbon steel cladding plate, a new technique of brazing/hot-rolling method was put forward, and the effect of main process parameter on the bonding strength of brazing cladding plate was studied, and the bonding mechanics of hotrolling cladding plate was analyzed, and the main mechanical properties of cladding plate was tested.The results showed that an effective brazing bonding can be gotten by using home-made silver base solder.The oplimized processing parameters are as follows:brazing temperature is 755-770℃ and holding time is 2.5 -3 min.Soldered layer shows good plasticity during hot-rolling process.When the deformation rate was 40%, there was no fracture and lamination in soldered layer after rolling.Metallic bonding formed between the soldered layer and the base metal, and the bonding strength of the stainless steel/soldered interface obviously increased, and the shear strength of cladding plate after hot-rolling can be reached 342.6 MPa.

     

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