試樣棒和鋼材的熱處理?xiàng)l件
| Steel grade | End quench test Austenitizing temperature °C | Carburizing temperature °C | Core-hardening temperature °C | Case-hardening temperature °C | Tempering °C |
| Name | Number |
| 16MnCr5 | 1.7131 | 870 | 880~980 | 860~900 | 780~820 | 150~200 |
① Time for austenitizing as a guide: 30 to 35 minutes.
② The carburizing temperature will depend on the chemical composition of the steel, the mass of the product, and the carburizing medium. If the steels are direct hardened, in general, a temperature of 950 °C is not exceeded. For special procedures, for example under vacuum, higher temperatures (for example 1020 °C to 1050 °C) are not unusual.
③ When applying the single quench method, the steel is to be quenched from the carburizing temperature or a lower temperature. The lower hardening temperatures are in each case to be preferred, in particular when there is risk of distortion.
④ The kind of quenching agent depends on, for example, the shape of the products, the cooling conditions and the amount of furnace filling.
⑤ Time for tempering as a guide: 1 h minimum.
