Production methods of carbide indexable CNC inserts

1. Powder metallurgy

Most carbide indexable CNC inserts are produced by powder metallurgy. The main steps of this process include the selection of raw materials, preparation of powders, mixing, pressing, and sintering. The raw materials are generally composed of a mixture of tungsten carbide, cobalt, tantalum, niobium and other powders. These powders are mixed in a certain proportion and pressed to form a blank of the insert. The blank is then sintered at high temperature to form block crystals under a certain temperature and pressure, and eventually become a carbide inserts.

2. Hot isostatic pressing

In addition to the powder metallurgy process, another commonly used production method is hot isostatic pressing. This method is a process in which a powder mixture of raw materials is subjected to a certain pressure at a high temperature to form the initial shape of the tool. Compared with powder metallurgy, hot isostatic pressing can obtain more uniform and finer grains, so this method is widely used in the production of high-demand carbide inserts.

3. Subsequent processing

After the production of the carbide blade, a series of subsequent processing is required to ensure the accuracy and performance of the blade. Usually includes grinding, polishing, edge processing, passivation, coating, etc. The specific steps of the production process will vary depending on the raw materials and tools. 

The produced cemented carbide inserts have excellent properties such as high hardness, high wear resistance, and corrosion resistance. They are widely used in aerospace, automobile manufacturing, medical, and other metal processing fields.