For effective and proper use of metal joining procedures, the American Welding Society (AWS) set standards. AWS, a nonprofit group supports the growth of knowledge; as well as advances in technology. This group bas set different list of metal joining processes, including brazing specifications.
Specifications for braze alloys
Every company selling braze alloys has its own individual product name for each one that it supplies; however, many companies supply alloy having same form of chemistry and brazing characteristics to meet customers’ demands.
AWS A5.8 specification requirements include:
- Testing for melt cleanliness and spatter for vacuum alloys.
- Powder sieve analysis.
- Binder content test for alloy tape.
Specification for fluxes
Specification lists for various fluxes have been classified by the AWS and the necessary testing requirements to meet the classifications. Fluxes are tested on following:
- Water content.
- Particle tests.
- Adhesion.
- Fluidity.
- Fluxing action.
- Flow characteristics.
- Life duration.
The number of tests required to classify a flux is dependent on the form it comes. Powders, pastes, liquids, or slurries are used by fluxes with the standard format of a Title is FB#-A – AWS Flux Classification Title.
On every flux, the FB is constant, but the number changes, depending on the base metal types that are to be joined:
- Aluminum brazing applications.
- Magnesium brazing applications.
- Dissimilar metal brazing applications.
- Brazing base metals that contain 0.04% of aluminum or titanium.
Specifications for heating methods
Specifications for the different heating methods are torch, induction, furnace, and resistance brazing. Brazing specifications are placed to standardize the method and quality of braze joints formed in these various ways, so that those newbie in brazing can quickly develop the ability to braze adequately. Aluminum brazing requires different skills than brazing forms, so it has its own AWS specification, C3.7, for heating methods and quality procedures.
AWS has published only a few of the specifications, but they are some of the most important. Leaders in the brazing industry all over the United States have come to develop these documents for safe, high-quality brazing.
Conclusion
If you are new in brazing specifications or some of its applications, you may find that the fundamentals of brazing webpage helpful. You can select further service of brazing products or for other related services.
There are many Metal Brazing Companies in the market today. Hi-Temp Brazing started to torch braze in 1974 to offer services for clients. There are three commonly used forms of brazing; manual, machine, and automatic.
