|
TERNARY
ALLOY |
AN ALLOY THAT CONTAINS 3 PRINCIPLE
ELEMENTS.
|
|
TERNE PLATE |
SHEET STEEL, COATED WITH LEAD-TIN
ALLOY. |
|
TOLERANCE
|
PERMISSIBLE DEVIATION FROM A
SPECIFIED DIMENSION.
|
|
TOOLING PLATE |
A CAST OR ROLLED PRODUCT OF
RECTANGULAR CROSS SECTION OF THICKNESS OF 1/4" OR GREATER, AND WITH EDGES
EITHER AS CAST, SHEARED OR SAWED, WITH INTERNAL STRESS LEVELS CONTROLLED TO
ACHIEVE MAXIMUM STABILITY FOR MACHINING PURPOSES IN TOOL & JIG APPLICATIONS. |
|
TORSION |
A TWISTING ACTION RESULTING IN
SHEAR STRESSES & STRAIN. |
|
TOUGHNESS |
ABILITY TO RESIST FRACTURING OR
DISTORTION.
|
|
TRACE
|
EXTREMELY SMALL QUANTITY OF AN
ELEMENT, USUALLY TOO SMALL TO DETERMINE QUANTITATIVELY.
|
|
TRANSFORMATION RANGE |
TEMPERATURE RANGE OVER WHICH A
CHEMICAL OR METALLURGICAL CHANGE TAKES PLACE. |
|
TRANSVERSE
|
LITERALLY "ACROSS," USUALLY
MEANING A DIRECTION PERPENDICULAR TO THE DIRECTION OF WORKING OR ROLLING. |
|
TUMBLING |
CLEANING ARTICLES BY ROTATING THEM IN
A CYLINDER WITH CLEANING MATERIALS. |
|
ULTIMATE
STRENGTH |
SEE "TENSILE STRENGTH."
|
|
UPSETTING |
1) A METAL WORKING OPERATION
SIMILAR TO FORGING 2) THE PROCESS OF AXIAL FLOW UNDER AXIAL COMPRESSION OF
METAL, AS IN FORMING HEADS ON RIVETS BY FLATTENING THE END OF WIRE. |
|
VACUUM MELTING |
MELTING IN A VACUUM TO PREVENT
CONTAMINATION FROM AIR AS WELL AS TO REMOVE GASES ALREADY DISSOLVED IN THE
METAL: THE SOLIDIFICATION MAY ALSO BE CARRIED OUT IN A VACUUM OR AT LOW
PRESSURE.
|
|
VENT MARK |
A SMALL PROTRUSION ON A FORGING OR
CASTING RESULTING FROM THE ENTRANCE OF METAL INTO A DIE OR MOLD VENT HOLES. |
|
VIBRATED WOUND |
SEE "OSCILLATED WOUND COILS"
|
|
VICKERS HARDNESS (TEST) |
A HARDNESS TEST FOR METALS, ESPECIALLY THOSE WITH EXTREMELY HARD SURFACES.
IT USES A DIAMOND PENETRATOR.
|
|
WASTERS |
CARBON STEELS. DEFECTIVE SHEETS.. MAYBE THE ENDS OF LARGE
COILS.
|
|
WATER HARDENING |
HIGH CARBON STEELS THAT ARE WATER
QUENCHED AFTER HEAT TREATING
|
|
WAVY |
DEFECT. A SLIGHT OR SIGNIFICANT WAVE BEYOND STANDARDS SET FOR FLATNESS.
|
|
WEDGE SHAPED |
A STRIP WHICH IS THINNER ON ONE
SIDE THAN THE OTHER SIDE. ONE OF SEVERAL REASONS FOR CAMBER. |
|
WELDING |
A PROCESS OF JOINING TWO PIECES OF
STEEL USING HEAT.
|
|
WORK HARDENING |
SEE COLD WORKING.
|
|
WROUGHT IRON |
IRON CONTAINING ONLY A SMALL
AMOUNT OF OTHER ELEMENTS. IT IS MORE RUST RESISTANT FROM STEEL AND FORMS AND
WELDS EASIER.
|
|
YIELD POINT |
THE LOAD PER UNIT OF ORIGINAL
CROSS SECTION AT WHICH, IN SOFT STEEL, A MARKED INCREASE IN DEFORMATION
OCCURS WITHOUT AN INCREASE IN LOAD. ONLY CERTAIN METALS EXHIBIT A YIELD
POINT. IF THERE IS A DECREASE IN STRESS AFTER YIELDING, A DISTINCTION MAY BE
MADE BETWEEN UPPER AND LOWER YIELD POINTS. |
|
YIELD STRENGTH |
THE STRESS AT WHICH A MATERIAL
EXHIBITS A SPECIFIED DEVIATION FROM PROPORTIONALITY OF STRESS AND STRAIN. AN
OFFSET OF 2% IS USED FOR MANY METALS. |
|
YOUNG'S MODULUS
|
THE COEFFICIENT OF ELASTICITY OF
STRETCHING. |