Soldering and Brazing

Soldering and Brazing are joining processes where materials, similar or dissimilar, are bonded together using a heating method and a filler metal without melting the base materials.  The filler metal melts, wets the base materials, and subsequently flows by capillary action.  Wetting of the base materials by the filler metals is enabled by the use of a suitable flux or by acoustic vibrations.

The difference between soldering and brazing lies in the temperature of the heating process:  soldering occurs at temperatures less than 450°C, and brazing occurs at temperatures over 450°C.  The heating of the filler metal can be accomplished by various methods, including hot plate, induction, torch, and furnace.

EWI utilizes brazing and soldering for customer applications from wide variety of industries, including automotive, aerospace, oil and gas, electronics, medical, heavy manufacturing, and advanced energy. The processes we use include:

  • Conventional Soldering and Brazing
  • Vacuum Brazing
  • Ultrasonic Soldering and Brazing
  • Lead-free Soldering