Patent ID: 11858093
Assignee: ZHENGZHOU RESEARCH INSTITUTE FOR ABRASIVES & GRINDING CO., LTD.
Field: Machine tools (Mechanical engineering)
Classification: CPC B  C | IPC B  C

Claim 8:
9. A method for preparing the composite binding agent grinding wheel according to claim 1, comprising:
putting the pretreatment abrasive, the resin bonding agent, the prealloy powder bonding agent and the ceramic powder into an ultrasonic vibrating screen of 100-300 mesh, mixing a resultant uniformly to form a mixed resultant;
putting the boron powder, the hexagonal boron nitride and the silicon dioxide into anhydrous ethanol at a solid-liquid ratio of 1: to a range of 40-60, and mixing a resultant uniformly to form a second mixed resultant; then transferring the second mixed resultant into a vacuum oven, and forming a non-agglomerated mixture with an ethanol mass percentage of 5-10%; and placing the non-agglomerated mixture in a high-frequency vibrator to vibrate and mix, and then drying a third mixed resultant in a vacuum oven;
mixing the mixed resultant and the third mixed resultant to form a fourth mixed resultant, and then mixing the fourth mixed resultant using an ultrasonic vibrating screen, so as to obtain a mixed molding material;
feeding the mixed molding material into a mold, and heating the mixed molding material to a range between 140-180° C. using a microwave heating method, then moving the mold to a vacuum press with a temperature of 140-180° C., applying a pressure of 100-140 MPa to vacuumize to −0.04-0.08 MPa, raising a temperature of the press to 240-280° C., insulating for 6-10 hours, taking out the mold to cool to room temperature, and unloading the mold to obtain a grinding wheel block; and
processing the grinding wheel block into a diamond shape or approximate diamond shape, and then bonding a resultant diamond shape grinding wheel block to a copper matrix.