Infrared brazing

> 450 ªC (840 ªF) for filler metal.

Temperature

Is a combination of surface tension and adhesion. It pulls the filler metal through the joint, and allows you to braze in all positions.

Capillarity

No operator intervention required for welding.

Automation

Information obtained from ASM Handbook Volume 6 Welding, brazing and soldering (1993).

This metod uses heat from a high-intensity infrared lamp. Some IR lamps are capable of generating up to 5000 W of radiant heat energy. The process is slower than most of the other processes of brazing and is generally limited to thin sections. However, it is cheaper.

What is it?

Disadventages

Infrared heat?

(Soldadura fuerte por infrarrojos)

Infrared brazing (IRB)

Main features

Base metal

Adventages

• Unfavorable liquid metal interactions.
• Base metal erosion may occur.
• Formation of brittle intermetallics or other unwanted phases.

Infrared heat is radiant heat that is obtained with the sources having energy frequency below the red rays in the light spectrum. Heating is principally done by the invisible radiation.

Filler metal

• Economic for complex assemblies.
• Excellent stress and heat distribution.
• Joints requiere little or no finishing.

• No need to melt base metals.

Created by Luis Angel Pegueros Cortes student of mechanical engineering at TECNM campus Veracruz..

Applications

• Parts with curved weld zones and inner walls.
• Thermoplastics such as polyethylene and polypropylene.
• Air duct tubes, liquid countainers, tank systems, tank filters and housings.
• Important demand in the chemical and aerospace industry.