Metal Bonded Grinding Wheel Type And Dressing
According to the manufacturing methods, metal bonded grinding wheels can be divided into sintered metal bonded grinding wheels, electroplating metal bonded grinding wheels and single-layer brazed metal bonded grinding wheels. Sintered metal bond grinding wheel is widely used, electroplating metal bond wheel can only be used in the situation of small grinding load. C wheel is a new type of metal bond wheel under development.
● Sintered metal bonded grinding wheel
The sintered metal bonded grinding wheel is made by high temperature sintering method with metal powder as binders. It has high bonding strength, good formability,high temperature resistance, good thermal conductivity and wear resistance, long tool life and can bear large load.
● Electroplating metal bonded grinding wheel
Electroplating metal bonded grinding wheel usually use nickel or nickel bass alloy as coating metal. Due to its high precision, electroplated grinding wheel is widely used in high-speed and ultra-high-speed precision grinding.
● Single layer brazed metal bond grinding wheel
In order to overcome the shortcomings of poor bonding strength and easy falling off of abrasive grains of electroplating metal bonded grinding wheel, it is necessary to increase the holding force of metal bond on abrasive grains and improve the bonding strength of grinding wheel. In the early 1990s, the research on using brazing instead of electroplating to develop single layer high temperature brazed superhard abrasive wheel was started. The vacuum furnace brazing method of active filler metal and nickel based filler metal is used to realize the solid combination of diamond and matrix,which greatly improves the strength, performance and tool life.
The Dressing Methods of Metal Bonded Grinding Wheel:
1. Electrolytic in-process dressing,ELID
2. Electron Discharge Machining, EDM
3. In-process electro-discharge dressing,EDD
4. Electro-contact discharge dressing, ECDD
5. EDM in air stream dressing
6. Laser dressing
7. Ultrasonic vibration dressing