Glossary Terms

1. Heating to a low temperature to remove gases. 2. Curing or hardening surface coatings, such as paints, by exposure to heat. 3. Heating to drive off moisture, as in the baking of sand cores after molding. Often used after plating or welding, or when the presence of hydrogen is suspected, to prevent embrittlement.

Variation of bandsawing that uses an abrasive band to polish parts previously sawed or filed. See bandsawing.

Machine that utilizes an endless band, normally with serrated teeth, for cutoff or contour sawing. See saw, sawing machine.

Endless band, normally with serrated teeth, that serves as the cutting tool for cutoff or contour band machines.

Long, endless band with many small teeth traveling over two or more wheels (one is a driven wheel, and the others are idlers) in one direction. The band, with only a portion exposed, produces a continuous and uniform cutting action with evenly distributed low, individual tooth loads. Often called band machining.

Mass finishing process that involves low-pressure abrasion resulting from tumbling workpieces in a barrel (usually of hexagonal or octagonal cross section) together with an abrasive slurry. See finishing.

Test for determining relative ductility of metal that is to be formed (usually sheet, strip, plate or wire) and for determining soundness and toughness of metal (after welding, for example). The specimen is usually bent over a specified diameter through a specified angle for a specified number of cycles.

Black finish on a metal produced by immersing it in hot oxidizing salts or salt solutions.

Hole or cavity cut in a solid shape that does not connect with other holes or exit through the workpiece.

Workholding devices used on milling machines. Styles include step, finger-holding, telescoping and quick-clamp.

Brittleness exhibited by some steels after being heated to a temperature within the range of about 200° C to 370° C, particularly if the steel is worked at the elevated temperature.

Abrasive grains mixed with a bonding agent. The mixture is pressed to shape and then fired in a kiln or cured. Forms include wheels, segments and cup wheels. Bond types include oxychloride, vitrified, silicate, metal, resin, plastic, rubber and shellac.