论文部分内容阅读
研究了面向再制造的环境友好型连接技术,讨论了摩擦焊、扩散焊、钎焊以及陶瓷薄片焊的方法。提出金属和弹性材料(如Al_2O_3)之间可以通过摩擦焊进行连接,考虑了压力、应变和温度在连接面的不均分布,确定了连接中Al扩散到Al_2O_3对自身应力状态的影响。Al扩散到Al_2O_3的系数约为1.8×10~(-13)(m/s),扩散引起的应力范围为0.2～0.8 MPa。扩散焊连接金属合金(如Fe-Al)与结构钢可以得到高抗拉性,应力范围为304～362MPa。Al_2O_3与添加钛的金属合金通过扩散焊进行连接,该方法适用于旋转设备上的轴类连接。上述连接方法不仅适用于实验室研究,还可用于工业生产。
The environmentally friendly connection technology for remanufacturing was studied and the methods of friction welding, diffusion welding, brazing and ceramic sheet welding were discussed. It is proposed that the connection between metal and elastic material (such as Al 2 O 3) can be connected by friction welding. The uneven distribution of pressure, strain and temperature on the connecting surface is considered, and the influence of Al diffusion to Al 2 O 3 on the self-stress state is determined. The coefficient of Al diffusion to Al 2 O 3 is about 1.8 × 10 ~ (-13) (m / s), and the diffusion-induced stress range is 0.2 ~ 0.8 MPa. Diffusion welding to connect the metal alloy (such as Fe-Al) and structural steel can get high tensile strength, stress range of 304 ~ 362MPa. Al_2O_3 and titanium-added metal alloys are connected by diffusion welding, which is suitable for shaft-type connections on rotating equipment. The above connection method is not only suitable for laboratory research, but also for industrial production.