Any grinding wheel has its certain use wear requirements to wear to a certain extent it is necessary to replace the new wheel. Not in order to save material, ultra require the use of wear and tear, which is an extremely unsafe illegal behavior. The general provisions of the new grinding wheel when the wheel wear to the large diameter of 10mm in diameter than the chuck should be replaced.
        Brought out from the Treasury are not necessarily qualified wheel grinding wheel, and even buy from the manufacturers of the new wheel is not necessarily qualified wheel. Any abrasive wheel has its valid use within the expiration date, it is qualified grindstone; than valid, it may not necessarily be qualified wheel. Rules of order of the grinding wheel should be used within the validity period, resin and rubber bonded grinding wheel storage after one year must be approved by the rotation test, successful applicants before use ".
        Wheel local crack during use, should immediately stop using the re-replacement of the cutting wheel, to avoid wheel broken.

CBN grinding wheel hardness than ordinary abrasive. High hardness means cutting more and more sharp; CBN has a high abrasion resistance, which means it is more difficult than conventional abrasive wear; ability to keep the abrasive shape is one of the main features of the CBN as a high-performance abrasive, then for The CBN wheel a cutting wheel chemical properties is how?
a good thermal conductivity. Corundum grinding wheel CBN wheel thermal conductivity up to several times to a hundred times, and thus be able to grinding heat quickly exported, reducing workpiece thermal deformation. A low thermal conductivity material grinding is very appropriate. Various spraying (welding) Material: nickel-based, iron-based; cast iron class materials: vanadium - titanium, cast iron, high-phosphorus iron, chilled cast iron; titanium alloy:
chemically inert b.CBN grindstone. CBN is not easy to produce a chemical reaction and iron-group elements, so for a variety of high-speed steel, tool steel, die steel, high alloy hardened steel, chrome steel, nickel alloys, powder metallurgy steels and high temperature alloys and other high-temperature, high hardness grinding of the material of low thermal conductivity is very appropriate. Introduce some chemical properties of the CBN wheel.