Brazing Carbide Tips, Part 1 of 2 | Carbide Processors
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- Опубліковано 13 лют 2009
- Brazing Carbide tips by Carbide Processors, Inc of Tacoma, Washington. Featuring Don Wallinger of West Coast Saws.
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That was brazed with standrd Black Flux because that was the best we had then. Since then we have developed a purified Black Flux and a Mega Flux. if we were to film again we would use the Mega flux because of the superior results.
You will get the strongest braze using a 49% silver braze alloy with a couple percent manganese. The flow on this is a little sludgy but most people use it with no problems.
A 50% silver braze alloy, cadmium free, will also work but will only have about 60% of the strength of the 49% silver alloy. Many people find this easier to use.
The 56% silver braze alloy with tin is the easiest to use but we do not recommend it for tools. We typically recommend this for artists and similar as a strength is very weak.
These are brazing fluxes. That is very important. Solder fluxes in general purpose fluxes will not hold up. The flux used here, and the flux you are most likely to find, is called Black Flux. It is actually more of a very, dark brown but it does look black after it has been heated. There is also a white flux which is called White Flux. The black flux is technically white flux with extra Boron added. It is said to stay active longer at higher temperatures and thus be more forgiving of overheating. In actual practice we have found that the black flux gives clearly superior results. Tips brazed with white flux are much more likely to pop off under any kind of force. When black flux is used in an identical brazing situation, the joints remain sound in the tips remain on even under extreme force.
We typically use the figure 800 F to separate soldering from brazing. This is pretty close to your 450 C. Other figures are given but are typically all pretty close to this. This type of brazing is often called high silver soldering, just silver soldering, and similar. This is, of course, incorrect and causes a lot of problems for a lot of users but it is widely used.
which material used for tips brazing on tools??
hi there..what kind of flux you're using..any brand? greeting from Philippines! thanks a lot!
what's the name of that flux
what's the name of this flux
Does the current flux apply the same way it looked like liquid when you brushed it on. I've always tried to keep my flux on the sawtooth seat. If it got placed anywhere else the silver solder would chase it. Making a mess.
Pedro Navajas Thank you for your question, the flux used in the video was "thinned out" by using distilled water. As you know flux has a more clay like consistency, some users find it easier to use this way. If you do decide to add the distilled water, you will have to play with it a little to see what works best for you!
When i braze my tips I normally use a tiny ball of flux and place it on the saw seat, then I bring my tooth right on it kind of pressing it up to the seat. When I apply the heat it looks like the tooth gets sucked into place by the flux. When I apply to much flux I get a messy tooth. How do you keep the silver solder from getting all over the place since it seems to always go where the solder goes.
You are using the terms silver soldering and silver brazing like they are interchangeable but am I wrong in thinking they are different processes? You look to be silver brazing? Sorry but this is a bit confusing as the two processes use different fluxes and different rods?
+Andrew Wilson You are correct! Silver Soldering and Silver Brazing are two different things. When Don mentions "silver solder" he is actually referring to the braze alloy that has been pretinned on the saw tips he is using. Both processes require different materials as you stated above and different temperatures.
In our industry the term "silver solder" is sometimes used in place of "silver brazing" It is a challenge at times to straighten out the difference. Tom made a video about this not to long ago....ua-cam.com/video/06NzGYOVwKA/v-deo.html
This is brazing not soldering!
Soldering is below 450 degrees.
Good video
what's the name of this flux
what's the name of this flux