Reheat the workpiece to 100-150℃ and maintain it for 5-20 hours. This treatment, known as aging, is used to stabilize the quality of precision components. Aging treatment for steel components under low temperature or dynamic load conditions is particularly important to eliminate residual stress and stabilize the structure and dimensions of hot-pressed elbows. The tempering treatment: The heat treatment method of high-temperature tempering after quenching is called tempering treatment. High-temperature tempering refers to tempering at a temperature between 500-650℃.

The tempering of carbon steel elbows can greatly adjust the performance and material of the steel, resulting in good strength, plasticity, and toughness, with excellent overall mechanical properties. Annealing of hot-pressed elbows: Heating the hot-pressed elbow to a certain temperature and maintaining it for a period of time, then allowing it to cool slowly, is called annealing. The annealing of hot-pressed elbows is a heat treatment method where the steel is heated to a temperature that causes phase transformation or partial phase transformation, followed by slow cooling after holding.