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What is Vibration Welding

What is Vibration Welding

What is vibration welding?

by Alex Lee Mob/Wechat/WhatsApp: +86-159185


Vibration welding here we will talk is means linear vibration welding, which is a kind of joining technique by friction between two pieces of parts to be welded at joining area. This is a joining procedure applies repeat linear mechanical motion cased by electronics magnetic vibration system to generate friction at contacting surface of two work-pieces to case heating & melting to material to realize joining.

During linear vibration plastic welding, one thermoplastic part half is hold with no moving while the other thermoplastic half is doing reciprocating motion (called as linear vibration) in fixed high frequency and vibration amplitude under pressure, through which heating energy is generated to melt thermoplastic material at the contacting surface. When the melting reach enough quantity, vibration stop and keep two plastic part halves together at the original relative position, until the molten thermoplastic material become re-solidified and form joining.

This kind of vibration is named as electrical-magnetic vibration. Comparing the others one called mechanical vibration, which applied motor working together with cam mechanism, electrical-magnetic type vibration can easily realize frequency & amplitude control and inspection in time, achieving precision welding process control, etc.

Vibration welding can be applied for thermoplastic welding and metal welding, here we presently study the vibration thermoplastic welding only.
Linear vibration friction plastic welding is widely applied in different field of industry, especially in automotive industry, house-appliance industry, aviation equipment manufacturing industry, etc. It is with advantages of high welding ability, can be applied to weld parts in big size, complex geometric shape design and challenging material, resulting high welding strength in stable welding continuous welding performance, ensuing air-tightness in joining area.