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焊接光阴太长,或超声波振幅过大会使焊接强度降低

网址:www.kskeber.cn  2019-10-26  作者:admin    阅读:

超声波金属焊接机是19世纪30年月偶尔发明的。其时在作电流点焊电极加超声振动实验时,发明欠亨电流也能焊接上,是以成长了超声金属冷焊技巧。超声波焊接固然发明较早,然则到目前为止,其感化机理还不是很清晰。它类似于磨擦焊,但有区别,超声焊接光阴很短,温度低于再结晶;它与压力焊也不雷同,因为所加的静压力比压力焊小的多。
Ultrasonic metal welding machine was invented occasionally in 1930's. In the current spot welding electrode plus ultrasonic vibration experiment, the invention of under current can also be welded, which is to grow the ultrasonic metal cold welding skills. Although ultrasonic welding was invented earlier, up to now, its influence mechanism is not very clear. It is similar to friction welding, but there is a difference. Ultrasonic welding has a short time, and the temperature is lower than recrystallization; it is also different from pressure welding, because the static pressure applied is much smaller than pressure welding.
一样平常觉得在超声波焊接进程中的初始阶段,切向振动进来金属外面的氧化物,并是粗拙外面的凸起部门产生重复的微焊和损坏的进程而使接触面积增大,同时使焊区温度降低,在焊件交界面产生塑性变形。如许在压力的感化下,互相靠近到原子引力能够或许产生感化的间隔时,即构成焊点。焊接光阴太长,或超声波振幅过大会使焊接强度降低,乃至损坏。
It is generally believed that in the initial stage of ultrasonic welding process, the tangential vibration enters the oxide outside the metal, and the convex part outside the rough and clumsy surface produces repeated micro welding and damage process, which increases the contact area, reduces the temperature of the welding area, and produces plastic deformation at the interface of the weldment. In this way, under the influence of pressure, the solder joints are formed when they are close to the interval where the atomic gravity can produce the influence. The welding time is too long, or the ultrasonic amplitude is too large, which makes the welding strength reduce, even damage.

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