White Flux is potassium salts of boron and fluorine. It makes them clean impact to eliminate oils and oils. It has some capacity to eliminate existing oxides. Try not to depend on both of those. Start with a spotless saw https://www.hardfacingfty.com/chromium-carbide-overlay-plate/ that is sans oxide. Motion, any motion, is intended to get oxygen far from the braze composite so that the braze compound melts and streams as opposed to catching fire.
Dark Flux is white motion with additional boron added. Dark motion is plainly better than white transition for brazing carbide saw tips to saws. The basic change from white motion to dark motion can forestall or completely dispose of tip misfortune and breakage.
Cleaned Black Flux is actually what the name says. It is dark transition that has experienced a different, last, cleaning, sifting measure. Standard dark transition has a few pollutions and latent components in it to hold the expense down. This is okay on the off chance that it is utilized totally outside of the braze joint. On account of brazing carbide saw tips to saw edges you likewise have motion between the braze combination and the steel. In the event that you are utilizing common dark transition you will have these dormant components caught in the joint. Refined dark motion will make an all the more even braze joint that is ordinarily 20 to 30% more grounded than a braze joint made with customary dark motion.
The utilization of the brazing transition is nearly as significant as the kind of motion being utilized. The scores and the two sides of the shoulders ought to have a layer of transition painted on them. It is significant that motion is covering the entire shoulder as the motion shields the shoulder from the warmth to a limited degree. The large thing transition does is forestall the amalgams in the steel from oxidizing. Many saw plates have nickel and chromium in the steel. On the off chance that the plate isn’t motion these alloying components can be transformed into nickel oxides and chromium oxides or chromium carbides and in this manner influence the strength of the steel. On the off chance that you see tone on your saw plate in the wake of brazing, at that point you need to transition to forestall that hue.
Utilizing a carbide saw tip that is wettable is significant. It is basic that the carbide saw tip be tried for wettability. The least difficult approach to do this is to put a small bit of braze composite wire in the tip with motion. At that point heat the tip and perceive how far the braze amalgam streams. In the event that the braze amalgam jumbles there is some kind of problem with the tip. On the off chance that the braze compound streams out into a wide, level puddle then the tip wets well.
Steel warms up a lot quicker than carbide saw tips. In tests it would appear that it is about a proportion of 3:1 to 5:1. On the off chance that you heat the steel and the carbide saw tip similarly the steel will get a lot more smoking, a lot quicker than the carbide.
Regardless of whether you are utilizing enlistment or light you ought to apply your warmth to and afterward through the carbide saw tip. In a perfect world the carbide saw tip will come up to temperature which will warm the braze composite which will at that point heat the neighboring steel to a profundity of close to 0.200″. Temperature the steel came to can be dictated by how far the braze compound streams onto it. The external furthest reaches of the stream should be close to 0.200″ from the carbide tip and 0.100″ is better.
Tip misfortune happens when the braze compound doesn’t adhere to the steel or to the carbide.