US2014013673A1PendingUtilityA1

Vitrified bonded grinding stone

Assignee: TOYODA VAN MOPPES LTDPriority: Jul 13, 2012Filed: Jul 11, 2013Published: Jan 16, 2014

Est. expiryJul 13, 2032(~6 yrs left)· nominal 20-yr term from priority

Inventors:Hiroshi Takehara Hiroshi Imaike

B24D 3/14

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References

Claims

Abstract

The vitrified bonded grinding stone includes a vitrified bond in which super abrasives such as cubic crystal boron nitride grains or diamond grains and an aggregate are contained. The aggregate is formed by porous ceramics and a substance which closes pores of the porous ceramics and the substance is weaker in strength than the porous ceramics and has a physical property that the substance does not dissolve under a burning temperature of the vitrified bond.

Claims

exact text as granted — not AI-modified

1 . A vitrified bonded grinding stone comprising:
 a vitrified bond in which super abrasives such as cubic crystal boron nitride grains or diamond grains and an aggregate are contained, wherein   the aggregate is formed by porous ceramics and a substance which closes pores of the porous ceramics;   the substance is weaker in strength than the porous ceramics and has a physical property that the substance does not dissolve under a burning temperature of the vitrified bond.   
     
     
         2 . The vitrified bonded grinding stone according to  claim 1 , wherein
 the substance is filled in the pores of the porous ceramics to close the pores thereof.

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