The
importance of dressing and truing abrasive grinding wheels can never be
over-emphasized. Dressing will restore the exposure and cutting ability
of the abrasives on the wheel surface. Dressing must be performed after
truing or whenever the wheel surface becomes locaded or glazed, or has lost
its cutting ability. Dressing removes the unwanted residue, such as braze
and steel particles, from the wheel surface. Dressing also removes a certain
small portion of the bond material and exposes the abrasives, thus allowing
for effective cutting action. Trueing is the procedure for eliminating any
unwanted "run-out" once the wheel has been mounted. Truing is
best done wet. In general, there are four types of dressers: 1) Single point diamond dressers
2) Multi-point diamond dressers
3) Forming diamond dressers
4) Impregnated diamond dressers
1. Single-point Diamond Dressers. This type of dresser is made by sintering together a selected diamond crystal with a metal matrix in a steel shank. The point of the set diamond is concentric with the shank.
2. Multi-point Diamond Dressers. This type of dresser is made by sintering together two or more diamonds with a metal matrix to provide multi-diamond points for dressing larger and wider abrasive wheels. There are many advantages for multi-point diamond dressers. The multi-points allow the spreading of resistance, thus reducing frictional heat, extending tool life, reducing likelihood of early failure, and allowing for faster dressing.
3. Forning Diamond Dressers. This type of dresser is made by sintering a high quality mono-diamond crystal with a metal matrix in a steel shank, and then grinding into various shapes such as a conical point with radius, facet, or profile.
4. Impregnated Diamond Dressers. This type of dresser is made by sintering a mixture of selected diamond particles with a metal matrix. This provides a longer tool life, is very economical, and is ideal for use with larger and wider abrasive wheels is committed to developing ail kinds of diamond dressers by applying up-to-date technoiogy for supporting our customers around the world.
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