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Suzhou Jinxing Abrasive Co., Ltd.    

Preparation method and application of self-sharpening sintered abrasive
Release time: 2017-1-11

A method and application for preparing self-sharpening sintered abrasives, which are characterized in that high-quality sintered abrasives are obtained by measuring the required raw materials in terms of percentages, mixing, cementing, crushing, classification, sintering, and post-processing. The sintered abrasive has a proper self-sharpening property. During the grinding process, the sintered large particles do not fall off entirely, but the binder between the small particles of the raw materials inside the sintered abrasive is fatigued and destroyed, and then broken. The abrasive particles fall off one by one. The sintered abrasive provided by the invention has good self-sharpening properties, which is beneficial to stabilize the processing efficiency and improve the utilization rate of the abrasive. It can be used in processing processes such as grinding, polishing, honing, sawing, etc. Finished tools such as honing heads and saw blades. The method provided by the invention has the advantages of simple process, high yield and low cost.

Main claim
1. A method for preparing a self-sharpening sintered abrasive, characterized in that it comprises the following steps: (1) measuring abrasive particles, high-temperature binder and auxiliary additives in mass percentage, mixing them uniformly to make a mixture; the weight of the abrasive particles The percentage is 50-70%, the weight ratio of high-temperature adhesive is 22-38%, the weight ratio of auxiliary additives is 0.5 ~ 30%, and the best is 5-15%; (2) adding an adhesive to the above mixture Wet and stir well, and dry in the range of 50 C ~ 150 C; (3) crush the agglomerates after drying; (4) classify the crushed powder according to requirements to obtain bonded particles of different particle sizes; (5) The bonded particles of the selected particle size are sintered at high temperature for 1-5 hours to obtain a sintered abrasive, and the adhesive is automatically removed during the high-temperature sintering process; (6) classification is performed again to obtain the sintered abrasive of the present invention.

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