The process method of diamond segment pressing

The process of diamond segment pressing is divided into two steps: cold pressing and sintering. Below we will introduce these two different processing procedures.
The cold pressing process of diamond segment is a production process in which diamond powder and metal powder are mixed and formed by cold pressing through a mold. Compared with the traditional sintering process, it has the advantages of low cost, low energy consumption and high production efficiency, so it has been widely used in the diamond tool industry.

The cold pressing process of diamond segment mainly includes the following steps:
1. Raw material preparation: mix diamond powder and metal powder evenly in a certain proportion to ensure the quality and performance of the finished product.

2. Mold design: according to the production needs and the size and shape of the finished product, design a suitable mold.

3. Cold pressing to form: put the mixed diamond and metal powder into the mold, and make it cold press in the mold after a certain pressure and temperature.

4. Demoulding and cleaning: after the cold-pressed diamond segment is solidified in the mold, it is taken out by demoulding, and its surface is cleaned to remove residual powder and impurities.

It should be noted that during the cold pressing process of the diamond segment, parameters such as pressure, temperature and time must be strictly controlled to ensure the quality and performance of the finished product. At the same time, in the design and production of the mold, the characteristics of the diamond powder and the material of the metal powder should also be taken into account, so as to make full use of the advantages of the cold pressing process and improve the production efficiency and quality of the diamond segment.

The hot pressing process of diamond segment mainly has the following steps:
1. Put the cold-pressed diamond segment into the mold, and then put the steel film into the hot-press furnace for sintering. The selection of sintering temperature and time needs to be determined according to the specific diamond and metal powder materials. Usually, the sintering temperature is between 1200°C and 1400°C, and the time is between 30 minutes and 1 hour.

2. Take out the steel mold and let it cool down. After sintering, the diamond and metal powder have been sintered into one, forming the matrix of the diamond segment. At this time, the steel mold needs to be taken out and cooled. Generally, natural cooling or water cooling is adopted.

3. Follow-up processing. The hot-pressed diamond segment body needs subsequent processing, such as welding, cutting, grinding and other processes, and finally becomes a finished product.  

The sintering process of diamond segment is a relatively mature manufacturing process, which can produce high hardness and high wear resistance diamond segment, which is widely used in stone, concrete, ceramics and other fields.
In general, after cold pressing and sintering, the diamond segment becomes a finished product, which can be used to cut stone and other hard materials.