A common problem diamond blade users may encounter is that one (or more) segment break off the diamond blade. This problem is often known as segment loss, which not only means the damage of the diamond blade, but may cause serious security issues because of the segment flying out.
Diamond can be either natural or synthetic, and has the following basic properties:
Perhaps the often sighted saw blade is a long steel plate with many saw teeth on one side to saw wood. Actually, besides this traditional woodworking saw blades, there are wide categories of saw blades for various uses. Just say the saw blades’ shape, the base of a saw blade can be a long steel plate, a circular blade, a closed steel band, a thin wire, or of other shapes. The blade’s teeth are often designed to have many styles to fit the needs of cutting different types of objects. Saw blades can also have no teeth but have just a continuous cutting edge.
Perhaps the most commonly sighted diamond circular saw blades are the sintered metal-bonded ones, on which diamonds are mixed and sintered with metal bond materials to form the blades’ cutting edges — diamond segments. Normally, these blades are made via 3 methods: wholly sintering, silver brazing and laser welding. The diamond blades made via these 3 methods are different and have their respective features and applications.
There are many kinds of metal bonds applied in diamond tools, for example, the cemented carbide bond whose skeleton is tungsten carbide, and Fe-based bond whose composition is mainly Fe and Ni. But the most widely used metal bond is bronze.
The bond material used in metal-bonded diamond tools can be Cu-based alloy, Co-Ni alloy, Fe-based alloy and carbide-based alloy. Bronze bond material is a kind of Cu-based alloy, and is widely used in metal-bonded diamond tools’ manufacture.
In diamond tools’ manufacture, the hot press method has below advantages:
Cold-pressed diamond tools are much cheaper than hot-pressed diamond tools. They are still widely used in many applications. The cold press production method has some advantages:
Metal bonds are widely used in diamond grinding wheels‘ manufacture. Among these metal bonds, Cu-Sn alloy is the mainly adopted bond. There are 3 modes in the metal-bonded diamond grinding wheels’ making.
As diamonds have many excellent mechanical properties, for example, high hardness, big strength, good wear resistance and low friction coefficient, they have obvious advantages when being used in grinding contrasting with the common abrasives.