Characteristics of Super Abrasives Honing Stone

Every particle of super abrasives honing stone plays a cutting role, which is because the forces acting on honing stone are all concentrated in smaller cutting edges, and superhard abrasive grains will do not wear out or be broken as quickly as ordinary abrasive grains. Wear-resistant metal bond supports and dominates abrasive grains to overcome gradually increasing cutting force, and various special bond can make cuttings open up its own chip removal channel.

Therefore, honing stone can do fast cutting, whose durability is longer than most ordinary honing stone such as silicon carbide honing stone, alumina honing stone and other honing stones. The use of super abrasives honing stone can make the productivity, process reliability and product precision improved. And it can also cut down the processing cost of single workpiece and decrease the scratch rate.

Super abrasives honing stone is short and narrow compared with ordinary honing stone, whose width is 1/2-1/4 of general honing stone, to set aside enough the chip space that makes a proper contact pressure between honing stone and workpieces. It has low quantity of heat, good grinding performance, even and clear overlapping curve after honing. What’s more, people should consider the materials of machining parts, hardness, machining allowance, the former process condition, the shape of the hole and the precision requirements, in order to determine the types, grain size, concentration and bond of honing stone.

People can choose single abrasives or mixed abrasives, because mixed abrasives honing stones have better grinding effect and application prospects than single abrasives honing stones when honing some metal materials. There is a big load effect on abrasive grains and bond, so the bond must be strong. Generally speaking, hard, brittle and high strength workpieces need softer bond, because it is easier to make abrasive grains damaged than other materials.

On the contrary, the workpiece materials with lower hardness have bigger grain stress because of its high penetration area, so it requires strong bond. The key of using super abrasives honing stone is to use metal bond, whose thermal conductivity, wear resistance and strength are higher than ceramic and resin bond.

The common concentration of super abrasives honing stone includes 150%, 100%, 75%, 50% and 25%. In general, increasing the concentration will improve the service life of honing stone, but the cutting efficiency will be low. The higher the concentration, the more abrasive grains on the work surface. The processing and finishing rate is good, but the cutting ability is poor; Honing stone with low concentration has better cutting ability but poor finishing rate.