Diamond has the advantages of extremely high hardness and wear resistance, low friction coefficient, high elastic modulus, high thermal conductivity, low thermal expansion coefficient, and low affinity with non-ferrous metals. It is currently the hardest tool material. It is mainly divided into single There are two categories: crystalline diamond and polycrystalline diamond. Single crystal diamond is divided into natural single crystal diamond (abbreviation: ND) and artificial single crystal diamond. Artificial single crystal diamond is divided into CVD single crystal diamond and HPHT(high pressure and high temperature) diamond. Polycrystalline diamond is divided into polycrystalline diamond (PCD) and chemical vapor deposition (CVD). There are many types of diamond tools with significant differences in performance. The structures, preparation methods and application fields of different types of diamond tools are quite different.
Procession of producing CVD diamond cutting tools
Polycrystalline diamond (PCD)
HPHT diamond plate
CVD single crystal diamond plate
General speaking,Polycrystalline diamond can be laser cut and EDM cut due to its conductivity properties.But CVD diamond and HPHT diamond only can be laser cut due to non-conductivity.Moresuperhard provide precision laser cutting machine for cutting PCD diamond,CVD diamond plate and MCD diamond plate.The advantages of laser cutting diamond are high precision, no contact, wide applicability, small thermal impact and high degree of automation.The problem is that the price of a diamond laser cutting machine is 3 to 4 times the price of a WEDM cutting machine.
In order to help customers reduce the cutting costs of CVD diamond sheets, MORESUPERHARD has been developing conductive CVD diamond for cutting tools.CVD diamond can be doped with boron to make it electrically conductive and can be cut using EDM machines.
EDM wire cutting Laser cutting PCD diamond
Welding methods mainly include laser welding, vacuum diffusion welding, vacuum brazing, high-frequency induction brazing, etc. At present, high-frequency induction heating brazing PCD blade welding is widely used with low investment and low cost.
The interfacial energy between CVD single crystal diamond and general metals and their alloys is very high, so that the diamond cannot be wetted by general low melting point alloys, and its weldability is extremely poor. At present, the welding process of CVD diamond tools mainly adopts the active metallization method. The solder is a silver-copper alloy containing iron, without adding flux, and is welded in an inert protective gas or vacuum. It uses high-frequency induction heating with a heating temperature of 850°C.As a full grinding solutions supplier,Moresuperhard provide high frequency brazing machine for your PCD cutting tools and vacuum brazing machine for your CVD diamond cutting tools.
High frequency brazing vacuum brazing
In view of the performance characteristics of single crystal diamond tools and the quality requirements after processing, the Moresuperhard R&D department strictly screened and controlled the diamond crystal form and grade, improved the formula, adjusted the production process, conducted multiple grinding experiments, and developed a high-performance Rough grinding, semi-fine grinding, fine grinding, and super-fine grinding ceramic bonded and metal bonded diamond grinding wheels that stabilize and ensure grinding edge quality. Professionally solve the grinding problems of single crystal knife with high grinding efficiency, good retention, no edge chipping, stable sharpening quality, ensuring the arc accuracy of the tool tip and long-lasting and more durable.
CVD (Chemical Vapor Deposition) cutting tools have huge development prospects, mainly based on their excellent performance, wide range of application fields, efficient processing technology, multi-functional design, sustainable development and continuously innovative technology. As a high-performance and efficient tool manufacturing technology, CVD tools will play an increasingly important role in modern manufacturing, providing more efficient and reliable processing solutions for various processing fields and promoting the development of the manufacturing industry.
In the grinding industry, ceramic diamond double-end grinding discs have attracted much attention for their high efficiency and high precision. In order to help newcomers quickly master the core knowledge in this field, Moresuperhard specially invited Jim, a sales expert in double-end grinding discs, to conduct a systematic training. From basic concepts to practical applications, this training content is full of practical content. Of course, in order to test the learning results, Jim assigned homework to everyone. The students' answers are all very good, which are summarized as follows for everyone to learn and refer to.
Moresuperhard is committed to manufacturing diamond grinding wheels that can grind a variety of materials such as carbide/ceramic/cermet and PCD/PCBN. In addition, the grinding performance of our company's grinding wheels is very good, because the main focus of the design of the grinding wheels is to shorten the production cycle and increase the dressing interval, which can improve the production efficiency of customers while also taking into account the excellent finish and uniform edge of the blade.
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