- TYPES OF DRESSING ROLLS
- CONTROLLED DISPERSION
The controlled dispersion type construction is designed to provide the performance characteristics of the reverse plated method, but is a sintered product. This method retains the desirable characteristics in diamond retention, matrix durability of sintered products and is relappable. The diamonds are randomly dispersed at a rate of up to 4.4 carats per square inch of surface area. Natural virgin diamonds are used with a basic size of 20-30 mesh. The high wear areas are reinforced as in the other sintered methods. The product contour and the mold are controlled to a high precision to provide an “as cast” condition with a very minimal (.0003) lap if required. This insures sharp diamond exposure which provides a resistant free dress of the grinding wheel. Check out the benefits of our controlled dispersion construction.
- HAND SET
This method is based on diamonds being placed one at a time in a pre-determined pattern into the mold. This pattern assures interlocking and overlapping of the diamonds to provide total coverage in any circumferential line. These diamonds are placed at a rate of 7 to 9 particles in a 1/2 linear inch. The basic diamond size is 90 to 110 particles per carat with an average content of 2.2 carats per square inch of surface area. Smaller diamond sizes can be also utilized.
- RAMDOM SET
This method differs from the Hand Set Type in as much as the diamonds are sprinkled in groups into the mold and “randomly”moved around to obtain spacing. The basic diamond size is 120 to 150 particles per carat with an average content of 3.1 carats per square inch of surface area. Larger or smaller diamond sizes can be used in this type of product.
- IMPREGNATED
The impregnated type of roll provides depth of diamond bearing matrix that is usually .030 to .060 inch thick. The diamonds are mixed with the matrix powder and inserted into the mold to the desired thickness, providing several layers of diamonds. The basic diamond size is 40-50 mesh with a diamond content of 72 carats (100% concentration) per cubic inch of volume.
- PLATED
The plated type of roll can be manufactured by two methods. The first method uses electro-plating to apply diamonds directly on a straight or contour steel blank. The diamond size is generally 60 mesh or smaller. The second method is the reverse electroplated type, which is made by internally plating a preformed mold similar to a conventional mold like that used in the Hand Set or Random Set types. The basic diamond size is 20-30 mesh that can be hand set or random set in place.
©2003
rev 2/22/03
