A method for preparing superabrasive tools through ultrasonic-assisted active connection

Abstract

The invention provides a method for preparing a superhard abrasive particle tool through ultrasonic-assisted active connection. The method comprises the following steps that A, a tool base body coated with active bonding agents and abrasive particles is fixed to an ultrasonic amplitude-change pole; B, the tool base body is subjected to braze heating and temperature rising technology operation, after the active bonding agents reach the melting temperature, first ultrasonic waves are applied to the tool base body, and chemical bonding and the wetting climbing effect of the active bonding agents and interfaces of the abrasive particles are facilitated through the ultrasonic effect; C, after the temperature rising technology is completed, the first ultrasonic waves are stopped applying, when the temperature of a connection zone is lowered to the liquid-solid converting temperature of the active bonding agents, second ultrasonic waves start to be applied to the tool base body, and heat stress releasing in the cooling process is conducted through high-frequency vibration of the second ultrasonic waves; and D, after the temperature of the connection zone is lowered to the tempering temperature of the active bonding agents, processing is stopped, and after temperature of the connection zone is further cooled to the room temperature, the abrasive particle tool is obtained.

Description

technical field [0001] The invention relates to the preparation technology of abrasive grain tools, in particular to a method for preparing abrasive grain tools through ultrasonic-assisted active connection. Background technique [0002] Diamond tools play an irreplaceable role in the high-efficiency and precision grinding of hard and brittle difficult-to-machine materials such as natural rocks, engineering ceramics, and semiconductors due to their excellent grinding properties such as high efficiency, stability, and durability. Diamond tools use many diamond abrasive grains under the control of the bond to achieve countless micro-cutting and complete the removal of workpiece material. How to effectively control abrasive particles has always been the research focus of the industry. In the 1990s, Professor A.K.Chattopdhyay of the Indian Institute of Technology first proposed the use of brazing technology to form a chemical metallurgical bond between the diamond and the activ...

AI Technical Summary

Problems solved by technology

Nevertheless, many statistical data still show that: in the use of brazed diamond tools, more than one-third of the abrasive grains basically fail prematurely without participating in the cutting task, resulting in unstable processing and short tool life. Protracted Technical and Process Difficulties

[0004] There is no doubt that the above problems seriously restrict the promotion of the application of brazed abrasive tools

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