PROPRIETARY WM T-J (A-9) Aceros para herramientas
Actualizaciones de datos
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PROPRIETARY WM T-J (A-9) Composición química
Ellwood Specialty Steel, Product Data Sheets,
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PROPRIETARY WM T-J (A-9) Propiedades físicas
Temperatura
Este material cuenta con 16 propiedades — aquí solo se muestra una parte.
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PROPRIETARY WM T-J (A-9) Tratamiento Térmico
- Forging: Heating for forging must be done slowly and uniformly. Soak through at 1900-2000°F, and reheat as often as necessary, stopping work when the temperature drops below 1700°F. After forging cool slowly in lime, mica, dry ashes or furnace. Should always be annealed after forging.
Annealing: Heat slowly to 1550-1600°F, hold until the entire mass is heated through, and cool slowly in the furnace (25°F per hour) to about 1000°F, after which the cooling rate may be increased. Suitable precautions must be taken to prevent excessive carburization or decarburization.
Strain Relieving: When desirable to relieve the strains of machining, heat slowly to 1050-1250°F, allow to equalize, and then cool in still air.
Preheat for Hardening: Warm slightly before charging into the preheat furnace, which should be operating at about 1400-1500°F.
Hardening:After thorough preheating, transfer to the hardening furnace, operating from 1750-1850°F, depending on the degree of hardening desired for the application, and the size of the tool.
Quenching: It is an air hardening steel, and will develop full hardness on cooling in still air. If the scaled surface resulting from air cooling is objectionable, the part may be quenched in oil until it has lost its color (1000-1200°F), and then allowed to cool in still air. Any necessary straightening should be done while cooling in the range of 850-450°F. Parts should be allowed to cool to 150°F, or to where they can be held in the bare hand, and then tempered immediately.
Tempering: Tempering practice may vary with size and application, but is usually performed in the range of maximum secondary hardness or higher. Double tempering is recommended. The following chart may be used as a guide to the hardness that may be expected after tempering.
PROPRIETARY WM T-J (A-9) Propiedades mecánicas
Temperatura
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- -Referencias cruzadas
- 7Composición
- 4Propiedades mecánicas
- 3Propiedades físicas
- 1Tratamiento térmico
- -Metalografía
- -Maquinabilidad
- -Esfuerzo-Deformación
- -Conformabilidad
- -Fatiga
- -Fractura
- -Bicho raro
- -Uniones
- -Revestimientos
- -Dimensiones
- -Tribología
- -Corrosión
- -Envejecimiento
- -Resistencia a la intemperie
- -Irradiación
- 1Proveedores Totales