| 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. |
