Early failures for cemented carbide inserts are due to rapid wear or tool tipping

In the process of the use of carbide insert, often due to various reasons in the early use appears the phenomenon of the collapse edge, can not meet its service life. The abnormal consumption of cutting tool, not only increased the processing of the tooling cost, will directly affect the overall efficiency. In order to reduce the collapse edge phenomenon, improve the service life of the carbide economic blade, we need from the design, manufacture and use on several links such as attention and improvement. First on the structure design, according to the different, spot-facing the economic design of the blade structure is also different. As for plane cutting force is relatively complete, uniform and dimpling shallow planar structure; economic blade can be used And if it is a cylindrical hole depth is quite deep sink hole will be used on spot facing economic blade structure; There are also integral economic dao and combined economic. In order to reduce the collapse edge, when the design usually avoid economic blade blade design at right angles, and grinding for transition edge or rounded edge.

 

In terms of manufacturing process, carbide inserts welding quality to a large extent also affect the service life of the carbide economic dao. Mainly using the brazing process, it is important to note before welding sandblasting and clean with gasoline to remove oxide film on the surface of the blade and pollution reducing desoldering phenomenon; You need the good control of welding temperature and cooling rate, fast heating or cooling too quickly will make larger internal stress is generated in economic dao which is the main cause of the blade cracks and collapse edge. In addition, you also need to according to the characteristics of grinding wheel grinding process and strictly follow the correct selection of grinding parameters on economic blade grinding can avoid cutting tools in use due to the collapse edge caused by improper grinding.

 

 

Another is caused by improper use of economic collapse carbide inserts, mainly includes two aspects: one is the operation reasons, the other is the selection of cutting parameter. Smooth blade work to be hit hard when you don't normally, reprocessing and vibration will appear on the surface of beats, then it is easy to produce collapse and blade blade. Cutting speed, cutting dosage, namely should depend on the degree of leveling, spot-facing especially in the initial stage of economic cutting, occurrence collapse edge are the most common phenomenon.