The invention discloses a foaming-type
grinding wheel with big air pores which is made of
resin adhesive, an
abrasive material, a thinner, a surface
active agent, secondary reinforced resin,
dextrin, a
foaming agent, a defoaming agent, filler and
starch. A manufacturing method of the foaming-type
grinding wheel with big air pores includes the steps that the
resin adhesive and the thinner are added into a container to be evenly stirred under the water bath condition of 60 DEG C; then the
abrasive material and the surface
active agent are added to be evenly stirred; afterwards, the secondary reinforced resin, the
dextrin, the
starch, the filler, the
foaming agent and the defoaming agent are added in sequence, and
slurry is injected into a mold of 45-60 DEG C when the
reaction temperature of the
slurry reaches 50 DEG C; and finally the mold is put into an oven to be roasted, demolding is conducted after the
slurry in the mold is completely cured, and accordingly the foaming-type
grinding wheel with big air pores can be obtained. The foaming-type
grinding wheel with big air pores has the characteristics that the
grinding wheel is low in weight and nontoxic, and air pores are uniform; the
grinding wheel is far superior to a common resin grinding wheel on the aspects of
water resistance, abrasion resistance, heat-conducting property and the like; and especially when the grinding wheel is used for grinding long-axis
metal parts, no vibration
ripple can be caused, and the grinding effect is better.