日本金剛砥石製作所 List of Products and Services

The "Vitrified Bonding Method" involves adding inorganic materials such as feldspar and clay as a binder to the abrasive grains, mixing in an appropriate amount of auxiliary agents, kneading, molding, and firing at a high temperature of 1,300°C for production. These products have a high porosity, are less prone to grinding burns, and are used in a wide range of applications from coarse grinding (#20 and above) to precision grinding (up to #4000). Recently, grinding wheels with larger pores have been developed, expanding their application as grinding wheels that alleviate clogging during grinding. 【Features】 ■ Manufactured by firing at a high temperature of 1,300°C ■ High porosity, less prone to grinding burns ■ Used in a wide range of applications from coarse to precision grinding ■ Expanding applications as grinding wheels that alleviate clogging during grinding *For more details, please refer to the PDF document or feel free to contact us.

• Grindstone

The "PVA manufacturing method" uses PVA (polyvinyl alcohol) as a binder to form a flexible, porous grinding wheel. It has typical detachment-type grinding characteristics and provides an excellent gloss to the finished surface when using ultra-fine powder for grinding. Grinding wheels made using this method are widely used in fields such as surface finishing of non-ferrous metal materials (aluminum, copper, chrome, etc.), non-metals (glass, resin, etc.), and difficult-to-cut materials. 【Features】 ■ Uses PVA (polyvinyl alcohol) as a binder ■ Formed into a flexible, porous grinding wheel ■ Provides an excellent gloss to the finished surface ■ Can be produced with a particle size of approximately #10,000 ■ Fully capable of meeting customer needs *For more details, please refer to the PDF document or feel free to contact us.

• Grindstone

The "Resinoid Manufacturing Method" involves adding phenolic synthetic resin and other binding agents to the abrasive grains of the raw material, and then firing it at around 200°C to produce the product. The vitrified manufacturing method allows for the production of grinding wheels using ultra-fine powders that are difficult to use or abrasive grains that are challenging to combine, without deformation, resulting in grinding wheels with excellent grinding performance (sharpness and finish). Grinding wheels produced by this method are used for ultra-precision finishing processes, such as polishing grinding wheels for magnetic heads of audio and video card readers or ferrite cores, as well as for end face polishing of fiber optic connector parts, due to their good grinding performance. 【Features】 ■ Manufactured by firing at around 200°C ■ Capable of producing grinding wheels with good grinding performance ■ High safety due to elasticity and toughness ■ Widely used *For more details, please refer to the PDF document or feel free to contact us.

• Grindstone

We would like to introduce the technology of Nippon Kongō Tōseki Seisakusho Co., Ltd. Grinding wheels can be broadly divided into three categories: grinding wheels for cutting, grinding wheels for polishing, and grinding wheels for slicing. Depending on the customer's intended use, we select and adjust the manufacturing method, type of abrasive grains, shape of the grinding wheel, and hardness (bonding strength) of the grinding wheel. We will introduce the technology behind the basic manufacturing methods. 【Types of Manufacturing Methods】 ○ Vitrified Bond Method ○ Resin Bond Method ○ PVA Method For more details, please contact us or download the catalog.

• Grindstone
• Diamond cutter
• Other abrasives