Flashcards: Metalworking

In metalworking, rolling is a metal forming process in which metal stock is passed through one or more pairs of rolls to reduce the thickness and to make the thickness uniform.

Repoussé or repoussage (French pronunciation: [ʁəpuse] ; [ʁəpusaʒ] respectively) is a metalworking technique in which a malleable metal is ornamented or shaped by hammering from the reverse side to create a design in low relief.

A mandrel (/ˈmændrᵻl/; also mandril or arbor) is one of the following: * a round object against which material can be forged or shaped; or * a tool component such as a chuck that grips or clamps materials to be machined in a lathe, or any other part which is to be spun or rotated

Damascus steel was a type of steel used for manufacturing sword blades in the Near East made with wootz steel.

Soldering (AmE: /ˈsɒdərɪŋ/, BrE: /ˈsɒldərɪŋ/), is a process in which two or more items (usually metal) are joined together by melting and putting a filler metal (solder) into the joint, the filler metal having a lower melting point than the adjoining metal.

A rivet is a permanent mechanical fastener.

Electrical discharge machining (EDM), sometimes colloquially also referred to as spark machining, spark eroding, burning, die sinking, wire burning or wire erosion, is a manufacturing process whereby a desired shape is obtained by using electrical discharges (sparks).

Powder metallurgy (PM) is a term covering a wide range of ways in which materials or components are made from metal powders.

A bellows or pair of bellows is a device constructed to furnish a strong blast of air.

Sintering is the process of compacting and forming a solid mass of material by heat or pressure without melting it to the point of liquefaction.

Drilling is a cutting process that uses a drill bit to cut a hole of circular cross-section in solid materials.

A cupola or cupola furnace is a melting device used in foundries that can be used to melt cast iron, ni-resist iron and some bronzes.

G-code (also RS-274), which has many variants, is the common name for the most widely used numerical control (NC) programming language.

A primer (/ˈpraɪmər/) or undercoat is a preparatory coating put on materials before painting.

Roll slitting is a shearing operation that cuts a large roll of material into narrower rolls.

Pig iron is the intermediate product of smelting iron ore.

A screw is a type of fastener, sometimes similar to a bolt (see Differentiation between bolt and screw below), typically made of metal, and characterized by a helical ridge, known as a male thread (external thread) or just thread.

Arc welding is a type of welding that uses a welding power supply to create an electric arc between an electrode and the base material to melt the metals at the welding point.

Ironwork is any weapon, artwork, utensil or architectural feature made of iron especially used for decoration.

Engraving is the practice of incising a design onto a hard, usually flat surface, by cutting grooves into it.

Tool steel refers to a variety of carbon and alloy steels that are particularly well-suited to be made into tools.

Cemented carbide is a hard material used extensively in cutting tools for machining, as well as other industrial applications.

Patina (/ˈpætᵻnə/ or /pəˈtiːnə/) is a thin layer that variously forms on the surface of stone; on copper, bronze and similar metals (tarnish produced by oxidation or other chemical processes); on wooden furniture (sheen produced by age, wear, and polishing); or any such acquired change of a surface through age and exposure.

In machining, boring is the process of enlarging a hole that has already been drilled (or cast), by means of a single-point cutting tool (or of a boring head containing several such tools), for example as in boring a gun barrel or an engine cylinder.

Tumble finishing, also known as tumbling or rumbling, is a technique for smoothing and polishing a rough surface on relatively small parts.

Chemical coloring of metals is the process of changing the color of metalsurfaces with different chemical solutions.

Metal fume fever, also known as brass founders' ague, brass shakes, zinc shakes, galvie flu, metal dust fever, or Monday morning fever, is an illness primarily caused by exposure to certain fumes.

Bearing balls are special highly spherical and smooth balls, most commonly used in ball bearings, but also used as components in things like freewheel mechanisms.

Hot working refers to processes where metals are plastically deformed above their recrystallization temperature.

Semi-solid metal casting (SSM) is a near net shape variant of die casting.

Aluminium foil (or aluminum foil), often referred to with the misnomer tin foil, is aluminium prepared in thin metal leaves with a thickness less than 0.

SM45C is a medium Carbon mechanical structure Steel Grade Number.