IndustrialDictionary

Metalworking

81 entries in this trade.

alligator

nounMetalworking

Any of various machines with strong jaws, one of which opens like the movable jaw of an alligator.

bar stock

nounMetalworking

Portions of metal (stock) in the form of bars, suitable for machining (such as turning) or fabrication (such as welding). It comes in standard cross-sections and certain lengths, such as 6 to 12 feet.

barrel process

nameMetalworking

A process of extracting gold or silver by treating the ore in a revolving barrel or drum, with mercury, chlorine, cyanide solution, or other reagent.

basic process

nameMetalworking

A Bessemer process or open-hearth steel-making process in which a lining that is basic, or not siliceous, is used, and additions of basic material are made to the molten charge during treatment.

batter

verbMetalworking

To flatten (metal) by hammering, so as to compress it inwardly and spread it outwardly.

behinder

nounMetalworking

A person employed to take folded metal sheets from the doubler and pass them back to the rollerman.

blanking

nounMetalworking

A metalworking process to form the rough shape of a sheet-metal workpiece.

blind rivet

nounMetalworking

A rivet which can be fixed with access only to the factory head end; most commonly a pop rivet fitted by passing the bucktail through the sheets to be secured, then attaching a rivet gun to a frangible mandrel through the centre of the rivet, which upsets the bucktail to form the field head and breaks off when the correct pressure has been achieved.

Bower-Barff process

nameMetalworking

A method of coating iron or steel with magnetic iron oxide in order to minimize atmospheric corrosion. The articles to be treated are put into a closed retort and a current of superheated steam passed through for a period, followed by a current of producer gas (carbon monoxide), to reduce any higher oxides that may have been formed.

brute de forge

nounMetalworking

Forge texturing, a metal finish, where the finished surface leaves the forge and hammering marks in place without grinding, sanding, polishing it away, except where such activity is necessary.

buck

verbMetalworking

To press a heavy, shaped bucking bar against the bucktail of a rivet, while the opposite end (the rivet factory head) is hammered by a rivet gun, to upset the bucktail into an appropriate shape, most commonly a pancake-shape.

bucker

nounMetalworking

A holder-up; one who bucks rivets, typically holding a heavy bucking bar against the bucktail of a rivet which is heated if necessary till it is soft, while the riveter (or gunner or, before mechanisation, basher) uses a rivet gun (an adjustable pneumatic hammer) fitted with a rivet set, against the factory head to provide impulses which upset the bucktail into a field head.

bucking bar

nounMetalworking

A heavy bar held against the bucktail of a solid rivet, which has been heated if necessary to soften it, and passed through the items to be held together, while a rivet gun hammers on the rivet's factory head; the impulses from the hammer, reflected by the bucking bar, then upset the bucktail to form a field head which is typically pancake-shaped.

burden

nounMetalworking

The proportion of ore and flux to fuel, in the charge of a blast furnace.

cheek

nounMetalworking

The middle section of a flask, made so that it can be moved laterally, to permit the removal of the pattern from the mould.

cold-shut

adjectiveMetalworking

Closed while too cold to become thoroughly welded; said of a forging or casting.

compound curve

nounMetalworking

A three-dimensional shape into which a thin flat sheet of material, e.g. metal, can be formed by operations that must include stretching or compression, in addition to bending.

cook

nounMetalworking

The member of a hot-rivetting team who heats the rivets in a brazier, see rivet.

core print

nounMetalworking

A projecting piece on a pattern which forms, in the mould, an impression for holding in place or steadying a core.

cumai

nounMetalworking

A construction method for brazing steel sheets together by sandwiching copper sheets between them and performing an ersatz forge weld, for making Japanese-style blade steel. This method is used to add ornamental copper accents into forge-worked steel, such as a copper wave in a display blade.

doubler

nounMetalworking

A person employed in a roller mill to fold the hot metal plates in half.

endmill

nounMetalworking

A type of milling machine: a cutter (cutting tool used in machining) with cutting edges on both the end and sides.

facing

nounMetalworking

A powdered substance, such as charcoal or bituminous coal, applied to the face of a mould, or mixed with the sand that forms it, to give a fine smooth surface to the casting.

factory head

nounMetalworking

The head formed when a rivet is manufactured, as opposed to the shank (or bucktail), the end of which will be upset to form the field head, after it is inserted through the materials to be connected.

field head

nounMetalworking

The head formed by upsetting the bucktail of a rivet after it is inserted through the materials to be connected, as opposed to the factory head made when the rivet is manufactured; the field head of a solid rivet is typically pancake-shaped, depending on the shape of the bucking bar or other tool used to upset it. The field head of a blind rivet is typically doughnut-shaped.

gate

nounMetalworking

The channel or opening through which metal is poured into the mould; the ingate; tedge.

holder-up

nounMetalworking

A bucker; one who bucks rivets, typically holding a heavy bucking bar against the bucktail of a rivet (heated if necessary till it is soft), while the riveter (or gunner or, before mechanisation, basher) uses a rivet gun (an adjustable-impulse pneumatic hammer) fitted with a rivet set, against the factory head to provide impulses which upset the bucktail into a field head.

hot roll

verbMetalworking

To roll metal in a temperature that is above its recrystallization point.

hot top

nounMetalworking

In casting, a live open riser with a hot ceramic liner, designed to counteract the formation of harmful hollows when casting objects of materials such as metals into molds.

loam

nounMetalworking

A mixture of sand, clay, and other materials, used in making moulds for large castings, often without a pattern.

match

nounMetalworking

A perforated board, block of plaster, hardened sand, etc., in which a pattern is partly embedded when a mould is made, for giving shape to the surfaces of separation between the parts of the mould.

mill bar

nounMetalworking

A rough bar rolled or drawn directly from a bloom or puddle bar for conversion into merchant iron in the mill.

opener

nounMetalworking

A person employed to separate sheets of hot metal that become stuck together.

parting sand

nounMetalworking

Dry, non-adhesive sand sprinkled upon the partings of a mould to facilitate the separation by not allowing the mould to stick together.

pattern

nounMetalworkingdated

A full-sized model around which a mould of sand is made, to receive the melted metal. It is usually made of wood and in several parts, so as to be removed from the mould without damage.

pickle

nounMetalworking

A bath of dilute sulphuric or nitric acid, etc., to remove burnt sand, scale, rust, etc., from the surface of castings, or other articles of metal, or to brighten them or improve their colour.

pop rivet

nounMetalworking

A blind rivet; a rivet which can be fixed with access only to the factory head end; after passing the bucktail through the items to be secured, the rivet gun is attached to a frangible mandrel through the centre of the rivet, which upsets the bucktail to form the field head and breaks off when the correct pressure has been achieved.

puddle ball

nounMetalworking

A vaguely spherical lump of gloopy wrought iron taken from the puddling furnace, which gets hammered or rolled into shapes, such as a puddle bar.

QPQ

nounMetalworking

Initialism of quench polish quench (“a treatment process for hardening steel, i.e. enhancing its corrosion resistance”).

rap

verbMetalworking

To free (a pattern) in a mould by light blows on the pattern, so as to facilitate its removal.

reduction

nounMetalworking

The ratio of a material's change in thickness compared to its thickness prior to forging and/or rolling.

roller machine

nounMetalworking

A type of manufacturing equipment containing two or more rollers through which raw metal is fed.

rotary table

nounMetalworking

A device for precisely positioning the workpiece, enabling the operator to drill or cut at exact intervals around a fixed axis.

rotolining

nounMetalworking

A process that lines the interior of metal objects with a polymer that involves heating and rotating the item.