Brazing diamond grinding aids abrasion resistance evaluation device and evaluation method

Abstract

The present invention provides an evaluation device and an evaluation method for the abrasion performance of brazed diamond abrasive material, which belongs to the performance evaluation of diamond abrasive material. The device comprises a stepper motor (1), a reducer (2), a single coordinate worktable (3), a diamond abrasive segment (4), a work piece (5) and a surface grinder with guideway rectangular table (6). The work piece is grinded by the rotating movement of the work piece and the linear roundtrip movement of the diamond abrasive segment (respectively produced through the methods of electroplating and brazing). When the prescheduled wear height of the diamond abrasive is reached, the used time of the work piece grinding is calculated and the abrasion index of the electro-plating diamond abrasive segment and the brazed diamond abrasive segment are worked out. The abrasion performance of the brazed diamond abrasive segment can be evaluated by comparing the abrasion indexes of the two diamond abrasive segments. The present invention is of feasible, reliable, and is suitable for the evaluation of the abrasion performance on the diamond abrasives with different grades and the brazed diamond abrasives with various brazing alloy systems and different brazing techniques.

Description

Brazed diamond abrasive wear resistance evaluation device and measurement method technical field The invention relates to an evaluation device and a measurement method for the wear resistance of brazed diamond abrasives, in particular to an evaluation device and a measurement method for the wear resistance of a horizontal axis-rectangular table surface grinder, which can evaluate the diamond produced by the brazing method. The wear resistance of abrasives can also be used to evaluate the wear resistance of other connection methods (electroplating, sintering) when diamond abrasives grind different materials. Background technique At present, compressive strength and impact toughness are widely used to evaluate the performance of diamond abrasives; the method of compressive strength is a static measurement method, which reflects the ability of a single abrasive grain to resist crushing. Anisotropy makes the results more scattered; the impact toughness measurement method refle...

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Problems solved by technology

More importantly, these two evaluation methods evaluate the ability of diamond abrasives to resist crushing, and cannot reflect the wear resistance of brazed diamond abrasives.

Although high-temperature brazing diamond tools are generally brazed under the protection of vacuum or inert atmosphere, the brazing temperature is close to or greater than its graphitization temperature; while diamond has poor thermal stability and is easily damaged and deteriorated at high temperatures. Heating temperature may cause thermal damage to diamond abrasive

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