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Basic Information
Since its establishment in 1941, SHIN-EI GRINDING WHEELS MFG. CO., LTD. has been researching and developing grinding wheels employing various types of bonds.
In the past few years, emphasis has been on researching and developing resinoid bond grinding wheels for mirror finishing and using phenol resins as the basic bonds.We have specialized in reseaching resinoid bond grinding wheels in the belief that it is essential to develop grinding wheels for higher levels of mirror finish, in view of the fact that high-precisin finished surfaces are increasingly required. For example, "polishing methods using free abrasive grains" have traditionally been employed in cases requiring high-level mirror finish on hard and brittle materials(reinforced glass, ceramic etc.) and polishing methods for them are required.
In recent years, however, there has been a trasition to "methods using fixed abrasive grains" due to ploblem associated with traditional methods, i.e.,poor working environment and economy.When "methods using fixed abrasive grains" are applied toward achieving a mirror finish, polishing is done using wheels to which fine abrasive grains are fixed.We consider resinoid bond to be the optimal bonding agent for affixing fine abrasive grains, because it enables more uniform dispersion of abrasive grains in comparison to other bonds.
Building upon these ideas, SHIN-EI GRINDING WHEELS MFG. CO., LTD. has developed and manufactured high speed roll grinding wheels for mirror polishing of copper and steel materials.Currently, we are striving to reseach and develop grinding wheels for mirror finishing of hard and brittle materials as P Series products.
What are resinoid grinding wheels?
Resinoid grinding wheels are so named because the menthod of manufacturing them, by baking at low temperatures using phenol resin or other thermoplastic resin as the bond, is called the resinoid method.
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High tenacity
Have higher tenacity than other organicbond grinding wheels, rubber grinding wheels etc.,which enhances safety and enables rough grinding at high speeds.
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Resin's elasticity
Also called semi-elastic grinding wheels,resinoid grinding wheels offer high performance in super finishing.
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Dispersion of abrasive grains
Resinoid grinding wheels' characteristic of producing more uniform dispersion of abrasive grains than other bonds(bonding agents)provides a stable finished surface.
