How to Improve the Work-life of Diamond/CBN Sand Belt?

How to improve the work life of Diamond/CBN sand belt

                                                  

1. Reduce the initial wear of sand belt.
The initial wear of the diamond belt is caused by the shedding or crushing of abrasive particles. In order to reduce the initial wear, should pre-ground for a certain time with reduced contact pressure, and use it to works normally. This method can be called dressing, but it is different from the dressing of grinding wheel.

2. Use grinding auxiliaries or grinding fluids to reduce the wear rate.
Using grinding assistant or grinding fluid is to reduce the friction between the abrasive particles and the workpiece, and reduce the wear heat, so as to achieve the effect of reducing the wear rate.

3. Increase the perimeter of sand belt to reduce the sand belt application rate.
The decrease of sand belt utilization rate can increase the life of sand belt. Under the conditions of machine tools and equipment, the belt circumference should be appropriately increased so that can get better cooling and increase the total number of abrasive grains involved in grinding.

4. Increase the belt speed appropriately. That can not only reduce the surface roughness, but also reduce the breakage and wear of abrasive particles and improve the work life.

5. Gradually improve the grinding pressure. After the diamond belt enters the normal cutting stage, gradually increasing the grinding pressure can strengthen the grinding process, increase the grinding grain cutting edge ratio pressure, make the abrasive grain broken, produce a new cutting edge recovery cutting ability, so that to improve the work life.

6. Improve the cutting performance of sand belt itself. Abrasive with good toughness has strong crushing resistance, thus prolonging worle life. The cutting performance of classic sand planting belt is better than that of gravity sand planting belt. Reducing the thickness of binder and density of planting sand can increase the chip space of sand belt, improve the strength of binder and make the bonding more reliable.

                    

These measures are mainly aimed at reducing abrasive belt grinding blunt (abrasion and broken) and the main form, and for sticky lid and out of these two forms, will be to the organization of the abrasive belt to hardness and abrasive belt structure parameters, such as sand plant density control and choice to solve, at the same time can also by abrasive belt surface coated with a layer of special coating, The aforementioned supercoating is used to solve the problem of adhesive cover wear of sand belt or grinding fluid is used.