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 3:
4. The composite binding agent grinding wheel according to claim 2, wherein preparation of the pretreatment abrasive comprises:
dissolving PES in dimethylformamide (DMF) to prepare a PES/DMF solution with a mass concentration of 15-25%;
adding the titanate coupling agent to the DMF in a mass ratio of 1: a range of 100-120, and mixing a resultant uniformly to form a mixed resultant;
adding the diamond abrasive and the ordinary abrasive, at a mass ratio of a second range of 2-4:1, to the mixed resultant, and mixing a resultant uniformly to form a second mixed resultant;
baking the second mixed resultant at a temperature in a range from 70-90° C., until a weight loss percentage of the DMF in a solution is 40-60% to form a baked resultant;
adding the baked resultant to the PES/DMF solution with the mass concentration of 15-25%, and mixing a resultant uniformly to obtain a pretreatment mixed solution;
electro-spraying the pretreatment mixed solution with an applied voltage of 40-60 kV into a container containing pure water at an injection speed of 50 mm/min, wherein a mixed abrasive wrapped by PES precipitates out of water; and
drying a product of the electro-spraying pretreatment mixed solution into the pure water to obtain a spherical pretreatment abrasive with a grain size of 40-60 μm.