Fundamental Metallurgical Considerations in Brazing and Soldering
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
The practice of joining materials by brazing and soldering techniques dates to ancient times, but a cursory inspection of the inner workings of nearly any piece of consumer electronics equipment should be enough to convince anyone of the technological importance of these processes even today. The fact that these processes can ce done easily by manual techniques, or can just as easy be automated have helped make them into well-established commercial practices that are used for applications from household plumbing to high-performance aerospace and outerspace structures. Brazing and soldering are materials joining processes that rely on the melting, flow, and solidification of a filler metal to form leaktight seals or strong, structural bonds. According to the American Welding Society, the features common to both processes are that: (1) only the filler metals and not the parts being joined are melted during processing; and, (2) the filler metals must wet the base materials and be drawn into or held in the joint by capillary attraction. The AWS definition further states that the term "brazing" is used when the joining process is oerformed above 450° C, while the term "soldering" is used below that temperature. This distinction is somewhat arbitrary, and, in reality, there is no fundamental difference between the two processes.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5644710
- Report Number(s):
- CONF-911003--6; ON: DE91016224
- Country of Publication:
- United States
- Language:
- English
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WELDING OR BRAZING DISSIMILAR METALS
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360101* -- Metals & Alloys-- Preparation & Fabrication
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360601 -- Other Materials-- Preparation & Manufacture
BRAZING
CARBON
CERAMICS
CHEMICAL PROPERTIES
ELEMENTAL MINERALS
ELEMENTS
EQUATIONS
FABRICATION
FILLER METALS
FLUID FLOW
GRAPHITE
JOINING
JOINTS
LIQUID FLOW
METALLURGY
METALS
MINERALS
NONMETALS
SOLDERED JOINTS
SOLDERING
WELDING
WETTABILITY