alligator
nounMetalworking
Any of various machines with strong jaws, one of which opens like the movable jaw of an alligator.
Metalworking
80 entries in this trade.
alpha rolling
nounMetalworking
The hot-rolling of titanium alloys within the alpha phase temperature range.
ball
verbMetalworking
To heat in a furnace and form into balls for rolling.
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.
basher
nounMetalworking
One who bashes something, figuratively or literally.
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 roll
verbMetalworking
To roll metal in a temperature that is below its recrystallization point.
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.
die cutting
nounMetalworking
The general process of using a die to shear webs of low-strength materials.
die plate
nounMetalworking
A die in the form of a metal plate.
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.
forge
verbMetalworking
To shape a metal by heating and hammering.
gate
nounMetalworking
The channel or opening through which metal is poured into the mould; the ingate; tedge.
grind
verbMetalworking
To remove material by rubbing with an abrasive surface.
hardface
verbMetalworking
To apply a harder or tougher material to (a base metal) by welding.
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.
lantern
nounMetalworking
A perforated barrel to form a core upon.
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.
merchant iron
nounMetalworking
Iron in a common, marketable bar form that is convenient for sale and use.
mill bar
nounMetalworking
A rough bar rolled or drawn directly from a bloom or puddle bar for conversion into merchant iron in the mill.
moulder
nounMetalworking
A person who makes moulds for casting metal; a mouldmaker.
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.
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.
piña
nounMetalworking
A cone of silver amalgam prepared for retorting.
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.
puddle bar
nounMetalworking
An iron bar made at a single heat from a puddle ball, by hammering and rolling.
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.
roast
verbMetalworking
To dissipate the volatile parts of by heat, as ores.
roller machine
nounMetalworking
A type of manufacturing equipment containing two or more rollers through which raw metal is fed.
rollerman
nounMetalworking
A person employed in a roller mill to insert the hot metal into the rolls.
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.
scaffold
nounMetalworking
An accumulation of adherent, partly fused material forming a shelf or dome-shaped obstruction above the tuyeres in a blast furnace.