Carbide

One of the Murphy's Laws about love states, "Love is the delusion that this one is different from all the others," but our proprietary recipe for carbide used in interrupted cuts really IS substantially different from all the others.

In makeup, carbide is like blacktop, where hard pieces of stone or slag are held together by tar. Carbide tooling consists of grains of carbide held together by a binder of cobalt, although some binder alloys are making it onto the market. In properties though, carbide is more like concrete. It is very durable, wear resistant, dimensionally stable and rigid. However, this rigidity causes it to be brittle and unable to withstand the impact and shock inherent to punching, milling, roughing and interrupted cuts.

We have a customer who has a very consistent operation both milling and turning 1018 day in and day out. This enabled us to do some R & D which resulted in a recipe that consistently gives 2.3 times the normal life of Kennametal TiN coated carbide inserts when milling and four times the normal life of Sandvik TiN coated parting inserts on a CNC lathe. Our standard recipe had given no improvement in either case. Milling is an interrupted cut operation, whereas a parting insert is not doing an interrupted cut, but the tool design cannot help but result in vibration, which is a high speed shock that is beyond the ability of carbide tooling to withstand well unless it has been cryogenically processed with our recipe. The standard recipe we use for everything else gives four times the normal life of Sandvik inserts on the same CNC lathe turning the same material.

If you have a problem with carbide tooling in a milling or other interrupted cut situation, we would appreciate having the opportunity to help you. Try us and see. Be sure to read our Guarantee.

Cryogenic processing does not help reprocessed (recycled) carbide. Most carbide tool manufacturers add a certain percentage of recycled carbide to their recipe to reduce raw material costs. Therefore, improvement in wear life is brand dependent. We have never failed to at least double the life of Niagara or Sandvik carbide tooling.

Cryogenic processing does not help carbide tooling in an "abuse" situation. For example, we processed two carbide 3/8" drills, but produced no improvement. When we asked what they were used for, the shop foremen replied that they were drilling 62Rc shafts. They got two holes per drill and would have been happy to get three. Cryogenic processing can't help carbide in this situation. Another processor told us that he processed some eight ounce carbide inserts for a company that turns down railcar wheels. The wheels have voids in them and the inserts shatter when they hit a void. Carbide is unable to withstand such shock and cryogenic processing can't help in this situation, either.