how are diamond cutting discs made?

Diamond cutting discs are specialized cutting tools with industrial-grade synthetic diamonds embedded on their cutting edges. These diamonds are bonded to the blade through various methods, such as sintering or laser welding, to form a diamond segment.

 

Below is the manufacturing process of diamond cutting discs:

Main Components

• Steel Core: The steel core serves as the supporting structure of the diamond blade. It is typically a circular metal disc that provides structural stability and allows attachment to cutting equipment.
• Diamond Segments: Industrial-grade synthetic diamonds are mixed with metal powders and bonded together through sintering or welding processes to form diamond segments. These segments are the actual cutting edges of the blade. The type, concentration, and size of the diamonds determine the blade's performance and application range.
• Bonding System: The bonding system secures the diamond segments in place, enabling them to withstand the forces of cutting. It consists of metal powders, such as cobalt, iron, tungsten, nickel, or copper. The bonding system gradually wears down during cutting, exposing new diamond particles and extending the blade's lifespan.

 

Manufacturing Process

• Sintered Diamond Cutting Discs: Divided into cold pressing sintering and hot pressing sintering. The diamond segments are pressed and sintered together. Cold pressing sintering involves pressing the diamond particles and bonding agents into shape under low temperatures, followed by sintering at high temperatures. Hot pressing sintering combines pressing and sintering under high temperatures and pressures.
• Welded Diamond Cutting Discs: Includes high-frequency welding and laser welding. High-frequency welding uses a high-temperature melting medium to bond the cutter head and substrate. Laser welding employs high-temperature laser beams to melt the contact edges of the cutter head and substrate, forming a metallurgical bond.
• Electroplated Diamond Cutting Discs: The diamond particles and bonding agents are electroplated onto the substrate. Electroplating involves coating the diamond particles with a metal matrix layer to adhere them to the substrate.

 

Specific Manufacturing Steps

• Material Preparation: Select industrial-grade synthetic diamonds and metal powders as raw materials. The diamonds must be of consistent quality and size to ensure cutting performance. The metal powders act as the bonding agent.
• Mixing: Combine the diamond particles and metal powders uniformly. The mixing process must ensure even distribution of the diamonds within the bonding agent to achieve consistent cutting performance.
• Molding: Use automated molding equipment to press the mixed material into the desired shape of the diamond segment. The pressure and temperature during molding are critical to the segment's quality.
• Sintering: Place the molded diamond segments into a high-temperature sintering furnace to fuse the diamonds and bonding agents. Sintering is a key step that determines the hardness and wear resistance of the segments.
• Assembly: Attach the sintered diamond segments to the steel core. Sintered diamond blades may be bonded using sintered attachment or laser welding, while electroplated diamond blades are electroplated onto the steel core.
• Quality Control: Conduct strict inspections of the diamond cutting discs, including durability, cutting performance, balance, and maximum speed tests. Ensure the discs meet quality and safety standards before packaging and shipment.

 

Materials Used

• Diamond Particles: Synthetic industrial-grade diamonds are primarily used. These diamonds have the same hardness as natural diamonds and are produced in laboratories under high pressure and temperature. They are consistent in quality and cost-effective. Coarser diamond segments are suitable for cutting asphalt and concrete, while finer segments are ideal for harder materials.
• Metal Powders: Common metal powders include cobalt, iron, tungsten, nickel, and copper. These powders serve as the bonding agent, securing the diamonds in place and controlling the wear rate of the segments.
• Steel Core: High-quality steel is used to ensure the blade's structural stability and durability. The steel core may be treated with special coatings to enhance corrosion resistance.

 

Diamond Cutting Disc Types

• Continuous Rim Blades: The blade edge is a solid, continuous layer of diamond segments. They are ideal for cutting materials like glazed ceramic tiles, marble, granite, porcelain tiles, and quarry tiles. Continuous rim blades provide the smoothest cuts.
• Segmented Rim Blades: The blade edge consists of diamond segments separated by gaps. This design allows for faster cutting of dense and abrasive materials like concrete, brick, stone, asphalt, and masonry. The gaps enhance cooling and debris removal.
• Turbo Rim Blades: The blade edge features a serrated or wavy pattern. Turbo rim blades combine the advantages of segmented rim blades and continuous rim blades, offering faster cutting speeds than continuous rim blades and smoother cuts than segmented rim blades. They are suitable for cutting various materials like masonry, ceramic tiles, marble, natural stone, and granite.

 

Applications

Diamond cutting discs are widely used in construction, stone processing, gemstone cutting, and other industries. They are suitable for cutting hard materials such as concrete, stone, ceramic tiles, glass, gemstones, brick, asphalt, cement tiles, marble, granite, quartz stone, cement pipes, and concrete blocks. Their exceptional hardness and wear resistance enable efficient and precise cuts.

 

In summary, diamond cutting discs are manufactured through a series of processes, including material preparation, mixing, molding, sintering, assembly, and quality control. The selection of raw materials and the precision of the manufacturing process directly impact the performance and lifespan of the diamond cutting discs.

 

Below is a table summarizing the manufacturing process of diamond cutting discs:

 

For example, in the construction industry, diamond cutting discs are used to cut concrete slabs and brick walls. In stone processing, they cut granite and marble into slabs and tiles. In gemstone cutting, they shape and size gemstones like jade, turquoise, quartz, and emerald. Diamond cutting discs can also cut ceramic tiles, glass, and other hard materials.

 

Quanzhou Huice New Material Co.,Ltd. Company has rich experience in the production and manufacturing of diamond cutting discs, producing various models and specifications of diamond cutting discs for cutting stone and concrete.