Cemented carbide composition and performance

Cemented carbide is a tungsten carbide hardness and high melting point (known as the hard phase) and a metal (called the binder phase) made by powder metallurgy process.Tungsten carbide tool commonly used carbide such as WC, TiC, TaC, NbC. The adhesive generally used is Co; titanium carbide-based adhesive is Mo, and Ni. Tungsten carbide physical and mechanical properties depend on the alloy composition and thickness of the powder particles as well as alloy sintering process. More hard phase of high hardness and high melting point Contains, the higher the hardness and high-temperature hardness of the alloy. Containing the more binder, the higher strength is.

Tungsten carbide divided into three categories according to their chemical composition and the use of performance:
Class K: tungsten cobalt (WC + Co);
P class: a tungsten titanium cobalt (WC + TiC + Co);
M class: add the rare metal carbides class (WC + TiC + TaC (NbC) + Co).

(1) K-type alloy (YG class)

Class K tungsten carbide flexural strength and toughness higher than the P-class, able to withstand the impact of tool to reduce chipping when cutting, but the heat is worse than the P-class, and therefore mainly used for machining cast iron, non-ferrous materials non-metallic materials. Was chipping like chips when machining brittle materials. The class K tungsten carbide better thermal conductivity helps to reduce the cutting temperature. In addition, the K classes tungsten carbide grinding, grinding out a sharp edge, it is also suitable for processing non-ferrous materials and fiber laminated material.

The higher the amount of cobalt in the alloy, the toughness is better. It is suitable for roughing; The Cobalt less for finishing.

(2) P-type alloy (YT class)

Class P tungsten carbide has a high hardness, especially high heat resistance, a better anti-adhesive, anti-oxidation ability. It is mainly used for processing the plastic material of steel as representative. The P Class tungsten carbide wear slower, tool life high. P class in the tungsten carbide P01 class is a base class of titanium carbide (TiC + WC + Ni + Mo) (Yn) of TiC as a main component, Ni, Mo as the bonding metal. Suitable for high-speed finishing alloy steel, hardened steel.

(3) M-based alloys (YW class)

The M class tungsten carbide joined rare right amount of insoluble metal carbides, to improve the performance of the alloy.

Chinatungsten Online can provide various sizes and grades of cemented carbide cutting tools, non-standard products are also customized according to customer requirements. Welcome to consult and purchase sales@chinatungsten.com, sales@xiamentungsten.com .