Ultrasonic Soldering Ceramic

As we all know, ceramics are difficult to wet materials. It is difficult to weld with general welding tools and processes. This article will introduce many welding processes of ceramics and compare them. It mainly introduces the advantages of ultrasonic electric soldering iron equipment developed by U-Bonder in soldering ceramics. .

Ceramics are a special family of materials ranging from traditional ceramics to today’s engineering ceramics (such as alumina, silicon nitride) used in electronics, aerospace parts and cutting tools. High-tech ceramics are constantly maturing and developing, and ceramics have become a very important engineering material. On the whole, ceramics are hard and brittle high melting point materials with low electrical and thermal conductivity, good chemical stability, vacuum tightness, corrosion resistance and thermal stability, as well as high compressive strength and some Unique performance, such as insulation, magnetic properties and electrical, magnetic, acoustic, photothermal and biocompatibility, can be widely used in various fields such as machinery, electronics, aerospace, medicine, energy, etc., becoming an important modern high-tech material. component. The welding and application of ceramic and metal dissimilar materials are also receiving increasing attention.

The existing classifications of ceramic and metal joining methods are mainly: brazing, electric beam welding, arc welding, diffusion bonding, and the like. Among these connection methods, the brazing method and the diffusion bonding method are relatively mature and widely used, but the welding process is slightly lacking in precision welding; electron beam welding is also applied, but the application is less. The ceramic and metal joining methods being studied and developed include fusion welding, transition liquid phase connection, and reaction forming and reaction sintering methods.

The Ultrasonic Soldering Ceramic technology developed by U-Bonder originates from ordinary welding and is similar to brazing, but it is different from brazing. Ordinary welding process, welding cracks are prone to occur during welding. This is mainly because the chemical composition and physical properties of the ceramic and the welding intermediate layer are very different, so the ceramic welding is generally carried out at a high temperature. Ultrasonic soldering iron melts the intermediate layer soldering material by thermal energy, and accumulates bubbles by the cavitation generated by the ultrasonic wave in the liquid to form a seamless or void-free soldering. Ultrasonic soldering iron welding does not require high temperature to weld at low temperature according to ultrasonic action. Low temperature welding is beneficial to stress relaxation and stress reduction to avoid welding cracks.