Detailed explanation of diamond segment sintering process

Diamond segment is a tool widely used in cutting hard and brittle materials such as stone, ceramics, glass and plastic. In the process of manufacturing diamond segments, the sintering process is a very important link, which can affect the quality and performance of diamond segments.
Sintering is a common powder metallurgy process, which is achieved by sintering powder under high temperature and pressure, transforming powder into a strong solid material. In the manufacture of diamond segments, a sintering process in which diamond powder and metal powder are mixed is used. So why should the diamond segment be sintered by high temperature? There are mainly the following reasons:

First of all, Sintering can form a stronger bond between diamond particles, thereby improving the hardness and wear resistance of the segment. During sintering, diamond particles are melted and bonded with metal powder under high temperature and pressure to form a strong segment material. The hardness of this material is much higher than that of ordinary metal materials, so it can be more efficient when cutting hard and brittle materials.

Secondly, sintering can improve the stability of the segment and reduce the risk of wear and fracture of the segment. During the sintering process, the bond between the diamond particles is stronger, so the stability of the segment is higher and the risk of wear and fracture is lower. This stability not only improves the life of the segment, but also reduces production costs.

Finally, sintering enables fine control of the material of the segment to meet the requirements of different cutting tasks. By adjusting parameters such as temperature, pressure and time of sintering, fine control of the material of the segment can be achieved, so that it has different performance characteristics. For example, the hardness, wear resistance, toughness, etc. of the segment can be adjusted by controlling the hot pressing sintering parameters to meet the requirements of different cutting tasks.

The flow of the sintering process includes the following steps:

Mixed raw materials: mix diamond powder and metal powder in a certain proportion, and add a certain amount of additives to improve the performance of the sintered material.

Compression: Put the mixed powder into a mold for compression. During the pressing process, it is necessary to ensure that the pressing force is uniform, otherwise it will affect the subsequent sintering effect.

Sintering: put the pressed green body under high temperature and high pressure for sintering. In this process, parameters such as temperature, pressure and time need to be controlled so that the diamond powder and metal powder can be fully sintered to form a complete segment.

Processing: the sintered segment needs to undergo a series of processing procedures, such as grinding, inlaying, etc., to make it meet the design requirements.
The sintering process has a great influence on the quality and performance of the diamond segment. First of all, parameters such as temperature and pressure need to be well controlled during the sintering process, so that the diamond powder can be fully sintered, thereby improving the hardness and wear resistance of the segment. Second, the use of additives can improve the compatibility between diamond and metal, thereby improving the crack resistance and fatigue resistance of the segment. Finally, fine machining is required after sintering to ensure the geometric accuracy and surface finish of the segment.

In short, the sintering process of diamond segment is a very important link in the manufacture of diamond segment. The quality of sintering is directly related to the quality of the diamond segment, and is one of the most critical links in the manufacturing process of the segment.