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 https://www.hardfacingfty.com/chromium-carbide-overlay-plate/. Try not to depend on both of those. Start with a spotless saw 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.
In the event that the laser cut saw plate isn’t gummed (ground) back enough the braze combination may not follow completely. The tip will fall off. On the rear of the saw tip will be a progression of even lines extending from side to side of the saw tip. These lines are stamps left by the scores from the laser cutting. Laser cutting doesn’t generally cut. Rather it softens a progression of associated openings. This is the thing that makes the lines.
In the event that the saw tip isn’t dealt with appropriately for wetting and brazing the tip will fall off and leave the braze combination in the indent. Frequently there will be a slight dim film on top of the braze combination in the score. This is brought about by the surface treatment on the carbide falling off. So the braze composite adhered to the surface treatment yet the surface treatment didn’t adhere to the carbide