Braze terminology question

[tomwalz]

Fillet is the term for the braze alloy structure formed in a fillet joint or fillet weld. Is there a term for the braze alloy in a butt braze? Butt?

Thanks,
tom

Thomas J. Walz
Carbide Processors, Inc.

http://www.carbideprocessor.com

 

[weldtek]

I'm not sure what you're asking, but, two abutting members joined by brazing or welding, can properly be referred to as a butt joint. See AWS A2.4

 

[MintJulep]

Filler metal?

 

[tomwalz]

Thank you.

In a fillet braze the braze material forms a joining structure called a fillet.

In a butt joint the joining material forms a structure called a ?

Thomas J. Walz
Carbide Processors, Inc.

http://www.carbideprocessor.com

 

[metengr]

Brazed butt joint. I have seen similar partial penetration repairs performed using sintered powdered metals on Ni-base alloy gas turbine inlet nozzle vanes that were referred to as PM butt joint repairs. Regardless of the filler - braze or other, it is called " " butt joint.

 

[metengr]

Forgot to mention that ASME B&PV Code, Section IX, which deals with Welding and Brazing Procedure and Operator Qualification refers to joint types as essential variables for brazing. Joint types are socket, lap and butt. Can’t ask for a higher authority that endorses braze butt joints.

 

[MintJulep]

Tom,

In a joint where there is a step or angle at the interstions of the two parts being joined, the miniscus of the filler metal will solidify to form a fillet. The fillet is not actually inside the joint.

In a butt joint, the filler metal will solidify into a shape with no special name, and is just refered to as "the filler metal."

 

[swall]

I would call a brazed butt joint an undesirable configuration.

 

[weldtek]

The term 'Braze' is equivalent in the context of 'brazing', as the term 'weld' is, in the context of welding. See ASM Materials Engineering Dictionary.

 

[tomwalz]

Thanks to all

Background: the application is brazing carbide to saw blades. I was teaching about the importance of adding fillets to what is essentially a butt joint. One person said that he thought the material between the steel body and the carbide tip was the fillet since fillet means something flat. I told him he was correct about the definition of fillet meaning flat but in brazing (which is governed by the AWS) fillet referred the shoulders of the joint. He said “O.K. then what is the braze alloy between the carbide and the steel called?”.

Since the best joint in this application is a combination of butt and fillet I would like two separate terms to describe the two separate sections of the braze alloy.

E.G. the fillet should be roughly a right triangle. The distance on the flow onto the steel plate should be roughly the same as the distance of the flow on the exposed carbide which creates the side clearance on the saw blade. There should be some wetting onto the plate to indicate plate cleanliness. The braze alloy between the steel and the carbide (called ?) should be about 0.003” to 0.005” thick.


Thomas J. Walz
Carbide Processors, Inc.

http://www.carbideprocessor.com

 

[metengr]

(called ?) = The braze deposit.

 

[griffengm]

Eli Lieberman in "Modern Soldering & Brazing Techniques" refers to the brazing metal in the area in question as "filler metal".

Griffy