Dictionary - Definition of HARDENER


Part of Speech	Definition
Noun	1. One who, or that which, hardens; specif., one who tempers tools.[Websters].
Source: Webster's Revised Unabridged Dictionary (1913)		Top

"Hardener" is a common misspelling or typo for: gardener, hardened, hardeners.

Date "Hardener" was first used in popular English literature: sometime before 1828. (references)

Specialty Definition: HARDENER

Domain	Definition
Noah Webster	[Noun] He or that which makes hard, or more firm and compact.. Source: Webster's 1828 American Dictionary.
Metallurgy	An alloy, rich in one or more alloying elements, added to a melt to permit closer composition control than possible by addition of pure metals or to introduce refractory elements not readily alloyed with the base metal. Source: European Union. (references)
Occupations	1: Controls furnace to harden, anneal, or temper watch parts: Presses button to admit gas mixture, forcing air out of furnace and burning mixture at entrance to prevent discoloration of parts and to maintain carbon content in parts. Places parts in metal basket or cylinder and inserts parts into furnace according to specified temperature. Advises on furnace temperatures and heat-treating time periods, and recommends procedures to produce desired hardness. Quenches pieces with air or oil. May cover parts with charcoal to prevent rapid heating causing discoloration of parts. May insert thermocouple into furnace and connect thermocouple to recorder. (references)
	2: Kneads fur felt hat cones to mat together interlocking fibers and harden cones for shaping into hats: Wraps wet cones in burlap, squeezes wrapped cones to extract water, and removes cones from burlap. Rolls cones in blanket and kneads to interlock fibers and harden cones. Unrolls blanket, refolds and repositions cones in blanket, and repeats kneading until cones are sufficiently hardened to withstand subsequent handling and shaping into hats. Stacks hardened cones on bench or tray. (references)
	3: Tends machine that agitates fur felt hat cones to mat together interlocking fibers and harden cones preparatory to forming into hats: Wraps wet cones in burlap and wrings or places cones in extractor and starts machine to remove excess water. Wraps cones in woolen cloth and places cloth containing cones on rollers of hardening machine. Pulls handle to lower upper rollers onto cones and simultaneously start timed rollers that agitate cones and tighten fibers in tip of cones. Removes cloth containing cones and repeats operation to tighten fibers in brim area of cones. May inspect cones and work fibers into holes and thin spots, using fingers, to repair damaged cones. (references)
Physics	A) a substance or mixture of substances added to an adhesive to promote or control the curing reaction by taking part in it; b) a substance added to control the degree of hardness of the cured film of a glue line. Source: European Union. (references)
Sports & Leisure	Chemical used to toughen the gelatin emulsion to render it less liable to physical damage by scratching or rubbing. Source: European Union. (references)
Wiktionary	[Noun] A chemical substance added to something in order to harden it; used especially with paints, varnishes and resins. (references)
Source: compiled by the editor from various references; see credits.		Top

Specialty Expressions: HARDENER

Expressions	Domain	Definition
Case hardener	Occupations	1: Tends battery of molten carbonizing salt bath or ammonia-methane furnaces that case harden steel objects, such as buckles, screws, wrenches, and bicycle crank cups: Loads objects by hand into wire basket attached to steel-rod handle. Immerses basket into chemical bath inside furnace pot or into ammonia-methane furnace. Scoops salt into furnace pots to maintain bath level or opens valves to inject gases into furnace, and sets timer. Removes basket from furnace at end of heating cycle and dumps objects into mesh container submerged in tank of quenching oil. May lift container from quenching tank and dip container in rinse water. Dumps objects into box or tray. May signal forklift operator to deposit or extract containers of objects into and from furnaces and quenching and rinse tanks. (references)
		2: Controls furnace to harden surface of steel objects, using any of following methods: (1) Places objects in wire basket and immerses them in heated chemical bath, such as sodium cyanide. (2) Packs objects in metal boxes filled with carbonaceous material, such as coke, coal, bone charcoal, or barium carbonate, and charges boxes into furnace. (3) Charges objects into furnace and opens valves to circulate carbon-rich gas, such as methane, around objects during heating process. Removes objects from bath or furnace and quenches objects in oil, water, or brine, or allows objects to cool to predetermined temperature before quenching, depending on metal properties specified. May be designated according to article case-hardened as Die Case Hardener (heat treating); or by process used as Cyanide Furnace Operator (heat treating). (references)
Electronic induction hardener	Occupations	Tends electronic induction machine, according to set procedures, to harden, braze, or anneal metal objects: Positions and fastens part in fixture of machine. Presses button on control panel to start electric current flowing through induction coil for prescribed time. May load automatic machine by dumping parts into hopper. May test parts for hardness, using preset hardness testing equipment, and stamp heat treatment identification mark on casting, using hammer and punch. (references)
Hand hardener	Occupations	Kneads fur felt hat cones to mat together interlocking fibers and harden cones for shaping into hats: Wraps wet cones in burlap, squeezes wrapped cones to extract water, and removes cones from burlap. Rolls cones in blanket and kneads to interlock fibers and harden cones. Unrolls blanket, refolds and repositions cones in blanket, and repeats kneading until cones are sufficiently hardened to withstand subsequent handling and shaping into hats. Stacks hardened cones on bench or tray. (references)
HARDENER HELPER	Occupations	Assists HARDENER (clock & watch) in hardening and tempering watch parts, maintaining flow of work into and out of department, and cleaning and packaging finished work. Performs other duties as described under HELPER (any industry) Master Title. (references)
Lens hardener	Occupations	Tends electric oven-type machine that hardens lenses used in safety eyeglasses, and tests hardness of lens, using steel-ball drop-test: Measures lens thickness with calipers to determine if lens meets thickness requirements for prescribed hardening. Positions lenses in holding fixture and pushes fixture into electric oven. Sets timer and temperature controls on oven according to chart specifications for prescribed hardness of lens. Removes lenses at end of cooling cycle, or places lenses in airflow to cool. Holds finished lens in polarized light fixture to detect defects produced by hardening. Places lens on bed of drop-test fixture and covers lens with cloth or plastic. Places steel ball of specified weight in release mechanism of fixture. Positions mechanism at specified distance from lens and releases ball. Discards broken lenses. (references)
Source: compiled by the editor from various references; see credits.			Top


Part of Speech	Definition
Noun	1. One who, or that which, hardens; specif., one who tempers tools.[Websters].
Source: Webster's Revised Unabridged Dictionary (1913)		Top

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Date "HARDENER" was first used in popular English literature: sometime before 1828. (references)

Specialty Definition: HARDENER

Domain	Definition
Noah Webster	[Noun] He or that which makes hard, or more firm and compact.. Source: Webster's 1828 American Dictionary.
Metallurgy	An alloy, rich in one or more alloying elements, added to a melt to permit closer composition control than possible by addition of pure metals or to introduce refractory elements not readily alloyed with the base metal. Source: European Union. (references)
Occupations	1: Controls furnace to harden, anneal, or temper watch parts: Presses button to admit gas mixture, forcing air out of furnace and burning mixture at entrance to prevent discoloration of parts and to maintain carbon content in parts. Places parts in metal basket or cylinder and inserts parts into furnace according to specified temperature. Advises on furnace temperatures and heat-treating time periods, and recommends procedures to produce desired hardness. Quenches pieces with air or oil. May cover parts with charcoal to prevent rapid heating causing discoloration of parts. May insert thermocouple into furnace and connect thermocouple to recorder. (references)
	2: Kneads fur felt hat cones to mat together interlocking fibers and harden cones for shaping into hats: Wraps wet cones in burlap, squeezes wrapped cones to extract water, and removes cones from burlap. Rolls cones in blanket and kneads to interlock fibers and harden cones. Unrolls blanket, refolds and repositions cones in blanket, and repeats kneading until cones are sufficiently hardened to withstand subsequent handling and shaping into hats. Stacks hardened cones on bench or tray. (references)
	3: Tends machine that agitates fur felt hat cones to mat together interlocking fibers and harden cones preparatory to forming into hats: Wraps wet cones in burlap and wrings or places cones in extractor and starts machine to remove excess water. Wraps cones in woolen cloth and places cloth containing cones on rollers of hardening machine. Pulls handle to lower upper rollers onto cones and simultaneously start timed rollers that agitate cones and tighten fibers in tip of cones. Removes cloth containing cones and repeats operation to tighten fibers in brim area of cones. May inspect cones and work fibers into holes and thin spots, using fingers, to repair damaged cones. (references)
Physics	A) a substance or mixture of substances added to an adhesive to promote or control the curing reaction by taking part in it; b) a substance added to control the degree of hardness of the cured film of a glue line. Source: European Union. (references)
Sports & Leisure	Chemical used to toughen the gelatin emulsion to render it less liable to physical damage by scratching or rubbing. Source: European Union. (references)
Wiktionary	[Noun] A chemical substance added to something in order to harden it; used especially with paints, varnishes and resins. (references)
Source: compiled by the editor from various references; see credits.		Top

Specialty Expressions: HARDENER

Expressions	Domain	Definition
Case hardener	Occupations	1: Tends battery of molten carbonizing salt bath or ammonia-methane furnaces that case harden steel objects, such as buckles, screws, wrenches, and bicycle crank cups: Loads objects by hand into wire basket attached to steel-rod handle. Immerses basket into chemical bath inside furnace pot or into ammonia-methane furnace. Scoops salt into furnace pots to maintain bath level or opens valves to inject gases into furnace, and sets timer. Removes basket from furnace at end of heating cycle and dumps objects into mesh container submerged in tank of quenching oil. May lift container from quenching tank and dip container in rinse water. Dumps objects into box or tray. May signal forklift operator to deposit or extract containers of objects into and from furnaces and quenching and rinse tanks. (references)
		2: Controls furnace to harden surface of steel objects, using any of following methods: (1) Places objects in wire basket and immerses them in heated chemical bath, such as sodium cyanide. (2) Packs objects in metal boxes filled with carbonaceous material, such as coke, coal, bone charcoal, or barium carbonate, and charges boxes into furnace. (3) Charges objects into furnace and opens valves to circulate carbon-rich gas, such as methane, around objects during heating process. Removes objects from bath or furnace and quenches objects in oil, water, or brine, or allows objects to cool to predetermined temperature before quenching, depending on metal properties specified. May be designated according to article case-hardened as Die Case Hardener (heat treating); or by process used as Cyanide Furnace Operator (heat treating). (references)
Electronic induction hardener	Occupations	Tends electronic induction machine, according to set procedures, to harden, braze, or anneal metal objects: Positions and fastens part in fixture of machine. Presses button on control panel to start electric current flowing through induction coil for prescribed time. May load automatic machine by dumping parts into hopper. May test parts for hardness, using preset hardness testing equipment, and stamp heat treatment identification mark on casting, using hammer and punch. (references)
Hand hardener	Occupations	Kneads fur felt hat cones to mat together interlocking fibers and harden cones for shaping into hats: Wraps wet cones in burlap, squeezes wrapped cones to extract water, and removes cones from burlap. Rolls cones in blanket and kneads to interlock fibers and harden cones. Unrolls blanket, refolds and repositions cones in blanket, and repeats kneading until cones are sufficiently hardened to withstand subsequent handling and shaping into hats. Stacks hardened cones on bench or tray. (references)
HARDENER HELPER	Occupations	Assists HARDENER (clock & watch) in hardening and tempering watch parts, maintaining flow of work into and out of department, and cleaning and packaging finished work. Performs other duties as described under HELPER (any industry) Master Title. (references)
Lens hardener	Occupations	Tends electric oven-type machine that hardens lenses used in safety eyeglasses, and tests hardness of lens, using steel-ball drop-test: Measures lens thickness with calipers to determine if lens meets thickness requirements for prescribed hardening. Positions lenses in holding fixture and pushes fixture into electric oven. Sets timer and temperature controls on oven according to chart specifications for prescribed hardness of lens. Removes lenses at end of cooling cycle, or places lenses in airflow to cool. Holds finished lens in polarized light fixture to detect defects produced by hardening. Places lens on bed of drop-test fixture and covers lens with cloth or plastic. Places steel ball of specified weight in release mechanism of fixture. Positions mechanism at specified distance from lens and releases ball. Discards broken lenses. (references)
Source: compiled by the editor from various references; see credits.			Top