The heat treatment of EN10083-3 42CrMo4 steel usually includes normalizing (tempering), quenching and tempering. The following are the details of these heat treatment methods:
1. Normalizing (tempering) : The 42CrMo4 steel is heated to a temperature range of 850-880°C for a period of time, and then quickly cooled to room temperature to obtain higher hardness and strength. Normalizing the steel can achieve the highest level of hardness, but at the expense of some toughness.
2. Quenching: 42CrMo4 steel is heated to a temperature range of 850-880°C for a period of time, and then quenched by rapidly cooling it to a medium temperature (usually oil, water or polymer solution). Quenching can make the steel obtain high hardness and excellent wear resistance, but it may lead to higher brittleness.
3. Tempering: After quenching, 42CrMo4 steel is heated to an appropriate temperature range (generally between 150-500°C) for a period of time, and then cooled to room temperature to reduce its hardness and improve toughness. The tempering operation helps to adjust the organizational structure of the material to provide the right balance of hardness and toughness.
The choice of tempering temperature and time depends on the material properties of 42CrMo4 steel. Generally, a higher tempering temperature will result in lower hardness and higher toughness, while a lower tempering temperature will result in higher hardness and lower toughness.
Before heat treatment, be sure to refer to the relevant technical data, the guidance provided by the manufacturer and the applicable standard specifications to ensure that the 42CrMo4 steel heat treatment process is correctly executed and the best performance is obtained.
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