Due to growing ecological requirements, there is a growing demand for bores that can be manufactured in high quantities and with a high precision in terms of surface quality and bore geometry. Faced with today's ecological and economic changes, honing with Diamond or CBN is a must in any modern manufacturing environment. In modern manufacturing, Diamond & CBN honing stones represent the most cost effective and best technological solution. The extreme hardness of Diamond and CBN guarantees long lifetime cycles for the honing stones, a basic requirement for a production facility with a high degree of automation and multi shift operation. On account of the particular hardness of the abrasive material, honing stones of Diamond or CBN stones have an excellent accuracy of form. This has an impact on the process reliability and the precision of the honed bore. The honing of very small bores can often only be carried out by Diamond or CBN.

Diamond & CBN honing stone : The dimension of the honing stone depends on the design of the honing holder/mandrel. In particular, the height of the abrasive layer is defined by the I possible infeed path of the holder. For the sake of clarity, some type of honing stones are given as below: Standard honing stone Honing stones having abrasive layer on steel base. Honing stone is soldered on honing shoe / carrier. To write dimension: W X H X L X A
Slotted standard honing stone Same as standard honing stone but with a slot longitudinally for better cutting, cooling and chip removal. To write dimension: W X H X L X AS
Solid honing stone This stone consists only the abrasive (No steel base) and is also soldered on the honing shoe/carrier or holder segment. To write dimension: W X H  X L X A
Compact honing stone Honing stones for direct fitting into the body of the honing holder. This type of stone is generally used for very small bore honing. To write dimension: W X H X L X A

Drawing of the stone required for manufacturing.
W = Width (mm) H = Height (mm)
L = Length (mm) A = Abrasive height (mm)
S = Slot width (mm)

Solutions For Top Quality

The grit size generally determines the achievable surface profile and is also responsible for the stock removal capacity of the honing stone. The bigger the grit size, the rougher the surface finish and higher the stock removal rate will be.

Diamond grit splintering in the micro range with low impact strength	Diamond grit splintering in the micro range with high impact strength With the kind permission Diamond Innovation

Depending upon the process parameters for the diamond synthesis, various types of crystals are available. These differ in colour, hardness, form, structure and stability. These characteristics also determine the cutting behavior of the respective crystal. Diamond crystals are generally preferred for machining cast iron and soft steel whereas CBN crystals are used for the machining of hardened or high Alloy steel.
 

The firm hold of the cutting crystal, the stability of shape, hardness and the wear performance characterize the bond. The hardness, toughness and brittleness of the bond is determined by the material which is to be honed. Basically metallic bonds with different alloying constituents are used. In addition to this, ceramic or synthetic bonds can also be used.