Belt grinding
Belt grinding and polishing are very flexible machining processes with undefined cutting edges that use a large number of cutting particles. Depending on the abrasive belt selected, extreme high stock removal rates (1 mm and more per pass ) or super fine finishes can be achieved (Ra 0,1 µm and better).
Technology
The grinding abrasive belt is mainly guided by 2 rolls. One called the belt tension roll and one the contact roll or wheel. The contact wheel is driven, this also allows this spindle to be used for a polishing wheel. The contact wheel presses the abrasive into the workpiece. Depending on the application the contact wheel different hardness and surface texture (grooved) can be selected.
The main influence is given by the abrasive itself. The abrasive grit size depends on the application from K40 to K600 in general use. In special applications also from K24 to K1200. If high stock removal and very fine final finishes is required in a single pass, the multi head system is preferred.
Alternatively the result can be achieved by multiple passes with change of abrasive in between the sequence. Special care should be taken in determining the belt sequence to maximize belt life amd finishing results. Avoid selecting high grit size belts in the first heads to minimize heavy scratches that cannot be removed by the next finer belts in the sequence.
The main influence is given by the abrasive itself. The abrasive grit size depends on the application from K40 to K600 in general use. In special applications also from K24 to K1200. If high stock removal and very fine final finishes is required in a single pass, the multi head system is preferred.
Alternatively the result can be achieved by multiple passes with change of abrasive in between the sequence. Special care should be taken in determining the belt sequence to maximize belt life amd finishing results. Avoid selecting high grit size belts in the first heads to minimize heavy scratches that cannot be removed by the next finer belts in the sequence.
Applications
The belt grinding and belt polishing are both used to improve the finish of flat materials and profiles as well as bars and tubes such as hydraulic, pneumatic and pressure cylinder; Axles, Calender rolls and billets; Engine components, stamped and sintered parts. For scale removal or linishing and sanding before and after coating.
Materials
Stainless steel, steel, Super alloys, copper, brass, aluminum, titan, zirconium, inconel, incoloy chrome surfaces, coatings, ceramics and synthetics all the way to paper tubes and cores.
Characteristic
Due to the wide range of grinding media, this method is equally suitable for high material removal as well as for producing very fine surfaces with excellent roughness values.
