BRAZING ALLOY
Nicrobraz Brazing Filler Metals | Brazing Services
A brazing alloy is another name for a brazing filler metal. A brazing alloy is the metal or alloy to be added in making a brazed joint.
Brazing is broadly defined as a group of joining processes that occur above 840 degrees F (400 degrees C) and below the melting point of the base metal. Additionally, brazing produces coalescence by the melting and subsequent resolidification of a filler metal or brazing alloy in the very narrow space between surfaces to be joined. The brazing alloy or brazing filler metal must have a lower melting point than the material being joined, because in brazing the base metal does not melt. In conventional brazing, molten filler metal is distributed between closely fitted surfaces of the base metal joint by capillary action – even against gravity.
Most of the common metals can be brazed, but not necessarily with the same brazing filler metal equipment, method, or procedure. Wall Colmonoy, the world's leading manufacturer of hard surfacing nickel alloys since 1938, has been an industry leader in the field of nickel brazing for over 60 years. Wall Colmonoy's Robert Peaslee is known as "the father of nickel brazing."
Wall Colmonoy has a long history of providing brazing answers that solve difficult problems in high-performance industries. In the early 1950s, the post war 'jet age' created new demands on jet-engine manufacturers. Wall Colmonoy responded with a new brazing technology involving nickel based brazing alloys and hydrogen atmosphere furnaces. In this innovative process, stainless steel components could be brazed to serve under high heat and corrosive conditions.
The first nickel brazing alloy was a modified alloy derived from hard surfacing nickel based Colmonoy alloys. The composition was a nickel-chromium-silicon-boron brazing alloy marketed under the trade name Nicrobraz 125.
Nicrobraz 125 spawned an entire family of Nicrobraz brazing alloys and Nicrocoat coating alloys. Nicrobraz brazing alloys have proved successful in such high-performance applications as jet engines, missiles, spacecraft, nuclear reactors, chemical, and food and dairy process equipment. Nicrobraz brazing alloys are now produced in a variety of forms for different application methods such as powder, rod, paste and tape.
In 1957, Wall Colmonoy Corporation developed a braze repair process for cracks in engine operated parts. This allowed jet engine parts to be overhauled at a fraction of the cost of new parts.
Wall Colmonoy Aerobraze, has eight brazing/heat treating furnaces, including the world’s largest top-loading vacuum furnace at 120” dia. X 180” high. Since 1959, Wall Colmonoy Dayton has specialized in furnace brazing--including hydrogen and vacuum brazing--and thermal processing of all types of metals. With furnaces handling work loads of up to 10 tons and quality assurance procedures to aerospace requirements, Wall Colmonoy Dayton has the capabilities and experience to handle as much (or as little) as you need.
Call or email Wall Colmonoy Corporation today for consultation on how Nicrobraz brazing alloys can assist you in your metal joining needs.
For Brazing Product Selection, Contact:
Wall Colmonoy Corporation
101 W Girard
Madison Heights, MI 48071
T. 248-585-6400
F. 248-585-7960
E-mail: wcc@wallcolmonoy.com
For Brazing Services, Contact:
Wall Colmonoy Aerobraze, Cincinnati
940 Redna Terrace
Cincinnati, OH 45215
T. 513-772-1461
F. 513-772-0149
E-mail: aerobraze@wallcolmonoy.com