power requirement of hard turning vs grinding

Power Requirement Of Hard Turning Vs Grinding Free Dry Grinding

Ballast weights can be added to some machines for tackling more difficult material removal jobs.

They generally leave behind a smoother profile than scarifying or shotblasting, and when working on hard, dense concrete they may polish rather than abrade the surface.

A single-disc grinder has a working width of 10 to 12 inches while a dual-disc unit covers 20 or more inches in one pass.

On multiple-disc units, the discs usually are counter-rotating to provide balanced torque so the grinder wont pull from side to side.

Many manufacturers offer a choice of power options, including electric, gasoline and propane.

Power Requirement Of Hard Turning Vs Grinding Free Dry Grinding

Most machines are equipped with vacuum ports for dust-free dry grinding.

Some models also include water mist systems so they can be used with wet- or dry-cutting attachments.

These smaller workhorses are available with grinding diameters ranging from 5 to 12 inches and can also be used to remove bumps, form marks, and graffiti from vertical surfaces or to grind concrete countertops (see A Definitive Polisher for Concrete ).

Like their larger cousins, handheld units come with a selection of grinding accessories and can be hooked up to an industrial vac for dust control.

Get an overview of the different types of dust control equipment, ranging from a simple wet-dry vac to sophisticated machines equipped with HEPA filtration systems.

However, these stones can clog easily, which can make them inefficient at removing most coatings.

Tungsten-carbide inserts are carbide-tipped blocks with beveled edges that can strip heavier buildups or coatings without digging into the concrete.

Their removal action, which is similar to using a scraper, works best in materials thicker than 116 inch.

Applications include removing adhesives, thick paints, resins, tar, industrial buildups and rubber deposits.

Other applications include polishing and removing minor surface imperfections.

The diamond segments, which are bonded to a backing plate or to removable block inserts or plugs, sit on the surface and are embedded in a metal or resin matrix.

During grinding, the matrix wears away gradually to expose new diamonds.

You can choose diamond tooling in various grit levels, ranging from fine to coarse, and with different bond hardnesses, shapes and diamond concentrations, allowing you to match the tool to your project requirements.

This will allow you to move more easily from coarser to finer grit levels.

They are most effective at removing thin coatings and paints or for cleaning and lightly abrading floor surfaces.

One manufacturer offers this tip: If the material to be removed can be cut with a knife, use tungsten carbide.

Diamond segments are more suitable for thinner coatings no greater than 116 inch.

In general, use a hard bond when grinding soft materials and a soft bond for hard materials.

Heavier units permit more aggressive grinding because they place more weight on the discs, allowing them to make better contact with the surface.