Abrasive article with shaped abrasive particles with predetermined rake angles

Abstract

The present disclosure provides an abrasive article (10). The abrasive article (10) has a direction of use, a y-axis and a z-axis orthogonal to the y-axis and the direction of use. The abrasive article (10) further includes a backing (12) and shaped abrasive particles attached to the backing. About 5% to about 100% of the shaped abrasive particles (14) independently include a first side surface (16), a second side surface (18) opposed to the first side surface (16), a leading surface (20) connected to the first side surface (16) at a first edge (24) and connected to the second side surface (18) at a second edge (26), a rake angle (30) between the backing (12) and the leading surface (20) in a range of from about 10 degrees to about 110 degrees, and a z-direction rotational angle (50) between a line (52) intersecting the first edge (16) and second edge (18) and the direction of use (22) of the abrasive article (10) in a range of from about 10 degrees to about 170 degrees.

1 . An abrasive article having a first direction of use, the abrasive article comprising:
 abrasive particles attached to a backing, and   wherein under the same testing conditions an amount of material removed from a workpiece in contact with the abrasive article is greater than an amount of material of the workpiece that is removed when the abrasive article is moved in a second direction different than the first direction of use.   
     
     
         2 . The abrasive article of  claim 2 , wherein at least 15% more material is removed in the first direction of use. 
     
     
         3 . The abrasive article of  claim 1 , wherein at least 50% more material is removed in the first direction of use. 
     
     
         4 . The abrasive article of  claim 1 , wherein the material is removed according to at least one of Grinding Procedure A and Grinding Procedure B. 
     
     
         5 . An abrasive article having a direction of use, a y-axis, and a z-axis orthogonal to the y-axis and the direction of use, the abrasive article comprising:
 a backing;   shaped abrasive particles attached to the backing, about 5% to about 100% of the shaped abrasive particles independently comprising:
 a first side surface, 
 a second side surface opposed to the first side surface, 
 a leading surface connected to the first side surface at a first edge and connected to the second side surface at a second edge, 
 a rake angle between the backing and the leading surface in a range of from about 10 degrees to about 110 degrees, and 
 a z-direction rotational angle between a line intersecting the first edge and second edge and the direction of use of the abrasive article in a range of from about 10 degrees to about 170 degrees. 
   
     
     
         6 . The abrasive article of  claim 5 , wherein at least one of the shaped abrasive particles is a ceramic shaped abrasive particle. 
     
     
         7 . The abrasive article of  claim 5 , wherein the rake angle of at least one of the shaped abrasive particles is in a range between about 80 degrees and about 100 degrees. 
     
     
         8 . The abrasive article of  claim 5 , wherein the rake angle of at least one of the shaped abrasive particles is in a range between about 85 degrees and about 95 degrees. 
     
     
         9 . The abrasive article of  claim 5 , wherein the z-direction rotational angle of at least one of the shaped abrasive particles is in a range between about 80 degrees and about 100 degrees. 
     
     
         10 . The abrasive article of  claim 5 , wherein the z-direction rotational angle of at least one of the shaped abrasive particles is in a range between about 85 degrees and about 95 degrees. 
     
     
         11 . The abrasive article of  claim 5 , wherein a relief angle between the backing and a trailing surface or edge at a cutting tip of at least one of the shaped abrasive particles is in a range of from about 90 degrees to about 180 degrees. 
     
     
         12 . The abrasive article of  claim 5 , wherein an edge of at least one of the shaped abrasive particles is substantially aligned with the backing in an x-y plane. 
     
     
         13 . The abrasive article of  claim 5 , wherein the rake angle of about 50% to about 100% of the shaped abrasive particles is substantially the same. 
     
     
         14 . The abrasive article of  claim 5 , wherein the z-direction rotational angle of about 90% to about 100% of the shaped abrasive particles is substantially the same. 
     
     
         15 . The abrasive article of  claim 5 , further comprising crushed abrasive particles. 
     
     
         16 . A method of using the abrasive article according to  claim 5 , the method comprising:
 contacting the shaped abrasive particles with a workpiece;   moving at least one of the abrasive article and the workpiece relative to each other in the direction of use; and   removing a portion of material of the workpiece.   
     
     
         17 . The method of  claim 16 , wherein the direction of use is a first direction under the same testing conditions the portion of material removed from the workpiece is greater in the first direction than in a second direction different than the first direction. 
     
     
         18 . The method of  claim 16 , wherein the article is moved in the second direction to finish the workpiece. 
     
     
         19 . The method of  claim 16 , wherein the direction of use is a linear direction or a rotational direction. 
     
     
         20 . The method of  claim 16 , wherein the workpiece comprises steel, aluminum, alloys thereof, wood, or mixtures thereof.