Aging treatment refers to the heat treatment process in which the seamless steel pipe is subjected to solution treatment, quenched at high temperature or subjected to a certain degree of cold working deformation, and placed at a higher temperature or room temperature to maintain its shape, size, and performance over time.
Steel pipes with higher carbon content will obtain high hardness immediately after quenching, but their plasticity will become very low. However, after the aluminum alloy tube is quenched, the strength or hardness does not reach the peak immediately, and its plasticity not only does not decrease, but increases. After being placed at room temperature for a long time (for example, 4-6 days and nights), the strength and hardness of this quenched alloy increase significantly, while the plasticity decreases. The phenomenon that the strength and hardness of the quenched alloy change significantly with time is called aging. The aging at room temperature is called natural aging, and the aging at a certain temperature is called artificial aging. Aging treatment is to consciously store materials at room temperature or higher temperature for a longer period of time to produce an aging process.
Purpose of aging treatment
In order to eliminate the size and shape changes of precision seamless pipes during long-term use. Often after low temperature tempering (low temperature tempering temperature 150-250°C) before finishing, the workpiece is reheated to 100-150°C and kept for 5-20 hours. This treatment to stabilize the quality of precision parts is called aging . It is particularly important to perform aging treatment on steel pipes under low temperature or dynamic load conditions to eliminate residual stress and stabilize the structure and size of steel pipes.
In mechanical production, in order to stabilize the size of castings, castings are often placed at room temperature for a long time before cutting. This measure is also known as statute of limitations. But this aging does not belong to the metal heat treatment process.
Steel pipes with higher carbon content will obtain high hardness immediately after quenching, but their plasticity will become very low. However, after the aluminum alloy tube is quenched, the strength or hardness does not reach the peak immediately, and its plasticity not only does not decrease, but increases. After being placed at room temperature for a long time (for example, 4-6 days and nights), the strength and hardness of this quenched alloy increase significantly, while the plasticity decreases. The phenomenon that the strength and hardness of the quenched alloy change significantly with time is called aging. The aging at room temperature is called natural aging, and the aging at a certain temperature is called artificial aging. Aging treatment is to consciously store materials at room temperature or higher temperature for a longer period of time to produce an aging process.
Purpose of aging treatment
In order to eliminate the size and shape changes of precision seamless pipes during long-term use. Often after low temperature tempering (low temperature tempering temperature 150-250°C) before finishing, the workpiece is reheated to 100-150°C and kept for 5-20 hours. This treatment to stabilize the quality of precision parts is called aging . It is particularly important to perform aging treatment on steel pipes under low temperature or dynamic load conditions to eliminate residual stress and stabilize the structure and size of steel pipes.
In mechanical production, in order to stabilize the size of castings, castings are often placed at room temperature for a long time before cutting. This measure is also known as statute of limitations. But this aging does not belong to the metal heat treatment process.
