Those who favor a wet sharpener typically place greater emphasis on safety, comfort, and overall performance. Proponents of dry grinding like its low-cost and pure speed.
Each method offers advantages, and the relative importance of the respective benefits is best evaluated in the context of other considerations. vijayalakshmi wet grinder Primarily, these are the particular job to be done, the volume of work, and the materials involved.
For example, when many pieces are involved or large amounts of material must be removed, or when the work piece is not compromised by overheating and finish quality is not of particular importance, speed is essentially all that matters and dry grinding can be the best choice. For safety, you may need to invest in additional equipment such as noise protection and dust removal, but the per piece production time and cost will still be lower than with other methods.
However, when fine grinding is clearly the primary task, such as in typical sharpening work, safety, comfort, and control become the dominant objectives. Even if grinding speed is somewhat reduced, a wet grinder is then clearly preferable. Also note that a water-cooled sharpening system produces an edge that stays sharp longer, since wet sharpening preserves the temper of the edge better because no heat builds up. Extending the life of the edge means that it does not need to be re-sharpened as often, thus reducing overall sharpening time even if each individual sharpening process takes longer.
Specifically why and how does a wet sharpening system achieve its numerous benefits?
· A wet sharpener eliminates all sparks and thereby the significant fire hazard always present with dry grinding.
· Wet sharpeners prevent grinding dust from being expelled into the air, so this potentially toxic material does not cause respiratory problems.
· Wet sharpening, since it involves slower-speed stone rotation, makes injuries from incidental contact with the wheel far less likely. Also, burning one-self on a hot ground edge becomes impossible, as the edge never heats up.
· A wet sharpener improves control since the increased safety induces greater operator comfort and thus makes it easier to apply proper pressure at the correct points to achieve ideal sharpening results.
· Wet grinding preserves the temper of an edge tool since the ground edge is continuously and automatically cooled.
· Water-cooled sharpening stones produce a finer surface finish than dry stones, reducing the need to hone and thereby speeding up the sharpening process.