What Are The Advantages Of Ultrasonic Metal Welding Compared To Traditional Welding Methods?

1. Low Temperature Welding, No Melting of Base Metal
• Traditional welding (arc welding, spot resistance welding, brazing) generates high heat, melts metal and causes oxidation, burn-through or material deformation.
• Ultrasonic metal welding relies on high-frequency friction vibration to realize solid-state bonding at low temperature. The metal only reaches plastic softening state without melting.
• No thermal damage to sensitive materials such as copper foil, aluminum foil, battery tabs and thin metal sheets; avoids burnt insulation layers.

2. No Consumables, Lower Production Cost
• Traditional welding needs welding wire, solder paste, flux, electrodes, shielding gas, which brings continuous material expenses.
• Ultrasonic welding requires no filler metal, flux or gas; only replace spare parts like welding horns occasionally. Greatly reduces long-term production running cost.

3. Excellent Conductivity, Stable Electrical Performance
• Arc welding / brazing forms alloy layers or oxidation films at joints, increasing contact resistance.
• Ultrasonic vibration removes surface oxide films during welding, forms pure metal molecular combination. Welding spot has ultra-low resistance, perfect for battery lugs, wiring terminals, new energy busbars.
• Stable electric conduction, less heat generation during component operation, improves battery safety.

4. Clean Weld Joint, No Oxidation & Discoloration
• High heat of traditional welding leads to black oxide, welding spatter, burrs, which require secondary polishing or cleaning.
• Solid-state ultrasonic bonding produces smooth, clean welding points without sparks, spatter, discoloration or oxidation. Save post-process cleaning steps.