The grinding process of titanium and titanium alloy is divided into: mechanical grinding, ultrasonic grinding, electrolytic mechanical compound grinding, barrel grinding.
1. Mechanical grinding: Titanium has high chemical reactivity, low thermal conductivity, high viscosity, low mechanical grinding grinding ratio, and is easy to react with abrasives. Ordinary abrasives should not be used for titanium grinding and polishing. It is best to use good thermal conductivity The super-hard abrasive, such as diamond, cubic boron nitride, etc., the polishing line speed is generally 900 ~ 1800m / min, otherwise, the titanium surface is prone to grinding burns and micro cracks.
2. Ultrasonic grinding: Through the action of ultrasonic vibration, the abrasive particles between the grinding head and the surface to be polished and the surface to be polished are moved relative to each other to achieve the purpose of grinding and polishing. The advantage is that grooves, dimples and narrow parts that cannot be ground by conventional rotary tools become easier, but the grinding effect of larger castings is still not satisfactory.
3. Electrolytic mechanical compound grinding: A conductive abrasive tool is used to apply electrolyte and voltage between the abrasive tool and the grinding surface. Under the combined action of mechanical and electrochemical polishing, the surface roughness is reduced to improve the surface gloss. The electrolyte is 0.9NaCl, the voltage is 5V, the rotation speed is 3000rpm / min, this method can only grind the plane, and the grinding of the complex denture bracket is still in the research stage.
4. Bucket grinding: the centrifugal force generated by the revolution and rotation of the grinding barrel is used to make the denture and abrasive in the barrel relatively move in friction to reduce the surface roughness. Grinding automation, high efficiency, but can only reduce the surface roughness and can not improve the surface gloss, the grinding accuracy is poor, can be used with the deburring and rough grinding of the denture before polishing.
Common Knowledge Of Titanium And Titanium Alloy Forging