Machining Tungsten Carbide Coating

Hvof applied coatings have a very strong bond and are hard and dense in nature.

Machining tungsten carbide coating. Tool choice is equally important. This layer transfers heat away from the tool and into the part or chip. Today s machining world archive. Wc is a chemical compound specifically a carbide containing equal parts of tungsten and carbon atoms.

2 issue 10 from ore to insert. If there is vibration your tools will chip similarly the machine tool used to cut tungsten must be rigid and resistant to vibration he notes. Carbide tooling is generally run at higher speeds compared to hss. These coatings are produced by taking a powdered material in this case tungsten and heating them up and firing them out at extreme velocities where they liquify.

Tungsten carbide is the most widely used type of high speed machining hsm tool material produced by powder metallurgy consisting of hard carbide usually tungsten carbide wc particles and a softer metal bond. Why is tungsten carbide an ideal tool material. Tungsten carbide chemical formula. The tungsten carbide wc 12co coatings are resistant to sliding wear impact abrasion and fretting at temperatures up to 510 c 950 f preferably in non corrosive media.

This coating holds its hardness at higher temperatures due to a layer of aluminum oxide that forms between the tool and the cutting chip. One alternative to sourcing and machining in tungsten would be to use tungsten carbide coating. Formerly seco carboloy told the story of how tungsten ore is processed into tungsten carbide which then becomes a state of the art cutting tool insert. Wc 12co thermal spray coatings are usually harder compared to coatings of wc 17co as a result of higher tungsten carbide levels in the coating.

Don graham turning products manager at seco tools inc. First class industrial coating services. Premium machining has state of art machines and technologies specifically adapted to machining of tungsten carbide. In its most basic form tungsten carbide is a fine gray powder but it can be pressed and formed into shapes through a process called sintering for use in industrial machinery cutting tools abrasives armor piercing shells and jewellery.

I find you need a high positive cutting edge and the right carbide grade and coating mr. This makes tialn a preferred choice when coating carbide.