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Glossary


A B C D E F G H I J L M N O P Q R S T U V W Y Z
Hand Block Sanding

Using a flat block or formed block when sanding with belts or sheets, usually to finish wood workpieces. Flat hand blocks are used to polish flat stock, while formed blocks are used to sand shaped moldings.

Heading

A technique used to improve the finishing characteristics of abrasive belts. The process impacts the voids between abrasive grains with a combination of oil and generated swarf, to retard penetration of the abrasive into the surface being polished, in order to produce uniform, burr-free finishes.

Heat Check

Parallel surface cracks forming a pattern on a surface of a metal as a result of thermal fatigue.

Heat Crack

A crack or fissure in a workpiece caused by excessive heat generated during the grinding operation.

Heel Scouring

Shaving the heels of shoes with a cutter to conform to the shoe shape leaves a ragged, uneven edge. It is necessary to bring (scour) the edge to a smooth, even surface which waxing and burnishing will keep bright and shiny. Scouring is accomplished with silicon carbide coated abrasives.

Holddown Rolls

Pressure rolls used on conveyor belt machines to force the work firmly against the conveyor and prevent the work from slipping or skidding during grinding.

Hoods

A protective covering, usually providing special ventilation, to carry away objectionable fumes, dusts, etc., during the grinding process.

VSM Abrasives Co.
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