What is a diamond composite?
The diamond composite sheet is sintered by using the diamond micropowder and the cemented carbide substrate under ultra-high pressure and high temperature conditions, and has the high hardness, high wear resistance and thermal conductivity of the diamond, and the strength and impact toughness of the hard alloy. It is the ideal material for cutting tools, drilling bits and other wear resistant tools.
Diamond composite sheet is a composite material composed of diamond and cemented carbide matrix. It has the characteristics of high hardness and good wear resistance. It is widely used in oil drilling, geological exploration, coal mining drill bit and machining tools.
Drilling and diamond-like composite sheet: suitable for soft to medium hard geological drilling, with high impact toughness and thermal stability, heat resistant temperature up to 750 ° C (two minutes), such products are available in flat and various grooves Face combination type, and can be designed according to user needs, groove, grinding, polishing, chamfering, etc., can provide special shape products.
Mechanical tool diamond-like composite sheet: suitable for cutting and processing non-metallic, non-ferrous metals and other metals such as high hardness alloys, wood, ceramics, etc., with high hardness and wear resistance, high cutting precision, and according to users Need to, the product is processed into a rectangular, triangular, fan-shaped shape, etc., can be used to make wear-resistant parts, drill bits, tips and drill teeth (spherical, tapered).
The domestic companies specializing in the production of diamond composite sheets mainly include Haiming Run and Sifangda. Through the introduction of international advanced technology, they strengthen their own technical development strength training, adopt new high-efficiency catalysts and new processes, and produce diamond composite sheets with various tooth structures. The interface is firm and uniform, with high wear resistance, thermal stability and strong impact toughness.
Direction of development
The current development direction of diamond composite sheets mainly includes:
1. The polycrystalline diamond layer is continuously thickened, from the initial less than 1mm to the current 2-4mm, and the life of the product is also increased.
2. The diamond grains are getting finer and finer, and the comprehensive performance of wear resistance and impact resistance is improved.
3. Improve the thermal stability by optimizing the process or removing Co and increasing the heat-resistant layer.
4. Optimization of interface structure to improve interface stress.
5. The diameter of the product is continuously increased to improve the synthesis efficiency.
6. Improve the sintering effect and reduce the performance difference.
Synthetic diamond composite sheets are superhard materials. This super word is not specific and has a wide range. Superhard materials are materials with high Rockwell hardness (HR), Brinell hardness (HB), and high Vickers hardness (HV). The average 45# just HR is 30-60, the hardest natural diamond. This concept covers a wide range of high hardness steels, high hardness ceramics, synthetic diamonds, etc. With the advancement of technology, a new type of diamond composite sheet has been developed in the industry. The roof type, the helmet type, the bread slice and the like have the following shaped pieces, which greatly improve the impact toughness of the diamond composite sheet without affecting the wear ratio. This has pushed the diamond composite technology to a new level.
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