PROPRIETARY Z-Tuff PM Aços de ferramenta
Atualizações de dados
Este material conta com 15 propriedades — apenas uma parte está sendo exibida aqui.
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PROPRIETARY Z-Tuff PM Composição química
ZAPP AG, Product Data Sheets,
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PROPRIETARY Z-Tuff PM Propriedades físicas
Temperatura
Este material conta com 15 propriedades — apenas uma parte está sendo exibida aqui.
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PROPRIETARY Z-Tuff PM Tratamento Térmico
- Soft annealing
The material is heated uniformly to a temperature of 860-870°C and then maintained at this temperature for 2 hours. Then, the material is cooled to 540°C in a furnace at a cooling rate of maximum 15°C per hour. It is then further cooled in still air down to room temperature.
Stress relieving (soft)
Rough machined material is stress relieved by heating to 600-700°C. Once complete heat penetration has been reached (min. 2 hours), the material is allowed to cool in the furnace to approximately 500°C followed by cooling in air. Hardened material is stress relieved at 15-30°C for 2 hours below last tempering temperature followed by cooling in air.
Straightening
Straightening should be done in the temperature range of 200-430°C.
Hardening
Vacuum, salt, or protective atmosphere methods are generally used. Care must be taken to prevent decarburization. Hardening of Z-Tuff PM usually involves the use of two preheating steps according to the table on the right. Depending on furnace and charging, additional preheating steps can be implemented. In order to achieve a corresponding degree of dissolution of the alloying elements, as well as an appropriate hardening, minimum heat penetration times as given in the table are recommended. These holding times should be correspondingly adapted for thick or thin-walled material cross sections.
Quenching
Quenching can take place in hot bath at 540°C, oil or pressurized gas. Quenching in salt bath or oil leads to maximum hardness, whereas cooling in vacuum can lead to lower values of 1-2 HRc. By use of vacuum quenching a minimum pressure of 6 bar is recommended. The appropriate pressure needs to be adjusted for complex tool shapes in order to minimize risk of cracking and tool distortion. For attaining ideal toughness properties, it is recommended to apply the hot bath quenching method. For attaining maximum hardness after quenching the cooling rate between 1000°C and 700°C needs to be maximized in order to minimize distortion in larger section sizes.
Tempering
Tempering should be carried out immediately after the material has cooled down to below 40°C or when the tool can be held with hands. Triple tempering with a holding time of 2 hours in each stage at the tempering temperature is necessary. It is important to ensure that the tools are cooled down to room temperature between the individual tempering stages.
PROPRIETARY Z-Tuff PM Propriedades mecânicas
Temperatura
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- -Referências Cruzadas
- 5Composição
- 1Propriedades Mecânicas
- 7Propriedades físicas
- 1Tratamento térmico
- -Metalografia
- -Usinabilidade
- -Tensão-Deformação
- -Conformabilidade
- -Fadiga
- -Fratura
- -Rastejante
- -Junta
- -Revestimentos
- -Dimensões
- -Tribologia
- -Corrosão
- -Envelhecimento
- -Resistência às Intempéries
- -Irradiação
- 1Total de Fornecedores