The invention relates to the field of superhard materials, and concretely relates to a CBN (Cubic
Boron Nitride)
grinding wheel. The invention provides the CBN
grinding wheel, which has favorable
shock resistance and shape retention, and can bear a larger load during a high-speed
grinding process. The CBN
grinding wheel comprises a steel core and an
abrasive ring. The steel core and the
abrasive ring are combined through a binding agent. The CBN
grinding wheel is characterized in that the
abrasive ring is prepared from the following raw materials in percentage by
mass: 30 to 70 percent of CBN abrasive, 20 to 60 percent of
metal binding agent, and 2 to 10 percent of auxiliary adhesion agent. The CBN
grinding wheel provided by the invention has favorable heat
conductivity and is beneficial for reducing the grinding temperature, so that the
power loss is reduced, and the grinding speed is improved; the auxiliary adhesion agent in a formula is beneficial for forming pores, and the characteristic of high holding force of the
metal binding agent is combined, so that a
chip space can be effectively enlarged, and abrasives are more sufficiently utilized; and the grinding wheel has the characteristics of high grinding efficiency, low grinding temperature, low
power loss, good
processing accuracy, long service life and the like.