Abrasive tool having controlled porosity distribution
AssigneesSaint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
InventorsEmmanuel C. Francois, Konstantin S. Zuyev, Muthu Jeevanantham, Anne M. Bonner, Michael W. Klett, Dean S. Matsumoto
Life of this patent
Estimating the term…
Abstract
An abrasive tool having a body including an abrasive portion having abrasive grains contained within a matrix material and porosity characterized by a bimodal distribution of pores including large pores having an average large pore size (Pl) and small pores having an average small pore size (Ps), wherein Pl>Ps. The body of the abrasive tool further includes a first reinforcing member contained within the abrasive portion, and a percent thermal expansion over a temperature range for 25° C. to 450° C. of not greater than about 0.7%.
Claims40
An abrasive tool comprising:
- a body including:
- an abrasive portion having abrasive grains contained within a matrix material and porosity characterized by a bimodal distribution of pores including large pores having an average large pore size (Pl) and small pores having an average small pore size (Ps), wherein Pl>Ps;
- a first reinforcing member contained within the abrasive portion;
- and
- a percent thermal expansion over a temperature range for 25° C. to 450° C. of not greater than about 0.7%.
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An abrasive tool comprising:
- a body including:
- an abrasive portion having abrasive grains contained within a matrix material and porosity characterized by a bimodal pore size distribution including large pores having an average large pore size (Pl) and small pores having an average small pore size (Ps), wherein Pl>Ps;
- a first reinforcing member contained within the abrasive portion;
- and
- wherein the body has an aspect ratio defined as a ratio between diameter to thickness of at least about 10:1.
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An abrasive tool comprising:
- a body including:
- an abrasive portion having abrasive grains contained within a matrix material, wherein the abrasive portion comprises a bimodal distribution of pores including large pores having an average large pore size (Pl) and small pores having an average small pore size (Ps), wherein Pl>Ps, and wherein the matrix material comprises at least about 60 vol % organic material;
- and
- a first reinforcing member contained within the abrasive portion.
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An abrasive tool comprising:
- a body including:
- an abrasive portion comprising abrasive grains contained within a matrix material, large pores, and small pores, wherein the large pores have an average large pore size (Pl) and the small pores have an average small pore size (Ps), and the percent difference between the average large pore size and average small pore size is at least 25% based on the equation ((Pl−Ps)/Pl)×100) wherein Pl>Ps;
- a first reinforcing member contained within the abrasive portion;
- and
- a percent increase G-ratio of at least about 15% over conventional abrasive tools, wherein the percent increase is based on the equation ((GN−GC)/GC)×100) wherein GN represents the G-ratio of an abrasive tool having large pores and small pores and GC represents the G-ratio of a conventional abrasive tool.
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Dependencies are inferred from the claim text.