Machine Shop Glossary
Business / Machine Shop Glossary
Magnesium: A lightweight, ductile metal similar to but lighter than aluminum.
Magnetic Chuck: A flat smooth-surfaced work holding device which operates by magnetism to hold ferrous metal workpieces for grinding.
Malleable: Capable of being extended or shaped by hammering or rolling.
Mandrel: A precision-made tapered shaft to support work for machining between centers.
Manganese: A gray-white nonmagnetic metallic element resembling iron, except it is harder and more brittle. Manganese can be alloyed with iron, copper and nickel, for commercial alloys. In steel it inc . . . View Full Definition
Martensite: A very hard, brittle microstructure of steel produced when steel is rapidly quenched after being transformed into austenite.
Medium Steel: Refer to carbon steel.
Mesh: To engage, as the teeth between two gears.
Metal: A class of chemical elements that are good conductors of heat and electricity, usually malleable, ductile, lustrous and more dense than other elemental substances.
Metallic Bond: The principal atomic bond that holds metals together.
Metallurgy: The science explaining the properties, behavior and internal structure of metals.
Methylacetylene Propadiene: A family of alternative fuel gases that are mixtures of two or more gases (propane, butane, butadiene, methylacetylene and propadiene). Methylacetylene propadiene is used for oxyfuel cutting . . . View Full Definition
Microstructure: A term use to describe the structure of metals. Visual examination of etched metal surfaces and fractures reveal some configurations in etched patterns that relate to structure, but magnific . . . View Full Definition
Mike: A term used for micrometer, or to measure with a micrometer.
Mild Steel: Refer to carbon steel.
Mill: A milling machine: also, the act of performing an operation on the milling machine.
Milling Cutter: A cutting tool, generally cylindrical in shape used on a milling machine and operated essentially like a circular saw.
Minor Diameter: The smallest diameter of a screw thread. Also known as the root diameter.
Modulus Of Elasticity: The ratio of stress to strain in material: also referred to as Young’s modulus.
Molybdenum: A hard, silver-white metal, a significant alloying element in producing engineering steels, corrosion resistant steels, tool steels and cast irons. Small amounts alloyed in steel promote uni . . . View Full Definition
Monel: A high tensile strength Ni-Cu alloy that exhibits high fatigue resistance in salt water, corrosive atmospheres and various acid and alkaline solutions. It is non-magnetic and spark-resistant.
Morse Taper: A self-holding standard taper largely used on small cutting tools such as drills, end mills and reamers and, on some machines, spindles in which these tools are used.
Multiple-Thread Screw: A screw made of two or more threads to provide an increased lead with a specified pitch.
Music Wire: A high-quality steel wire used for making springs. Also called piano wire.
Necking: Machining a groove or undercut in a shaft to permit mating parts to be screwed tightly against a shoulder or to provide clearance for the edge of a grinding wheel.
Word of the Day:
Fragrance: The sensation of the gases released from ground coffee as they are inhaled through the nose. Ranges from sweetly floral to sweetly spicy.