The influence of welding operation environment on welding connection
Release time:
2022-12-06
【Summary Description】 Environmental factors. Environmental factors refer to the working temperature, load conditions (such as load type, mode of action, speed, etc.) and working medium of the welding structure. Welded structures are in a variety of environments. Welded structures operating at high temperatures require materials with sufficiently high high temperature strength, good chemical and structural stability, and high creep strength. The welding structure working at room temperature requires the material to have good mechanical properties in the natural environment. When the working temperature is low or subjected to impact load, special attention should be paid to the performance of the material at the lowest ambient temperature, especially the impact toughness, to prevent low temperature brittle failure. For the components bearing east load, the material is required to have good dynamic fracture toughness and shock absorption. When the working medium is corrosive, the welding area is required to have corrosion resistance. Welded structures working in a nuclear radiation environment, due to the effect of neutron radiation, will lead to an increase in the yield point of the material, a decrease in plasticity, an increase in the brittle transition temperature, a decrease in toughness, and an increase in the radiation brittleness of the material.
Environmental factors.
Environmental factors refer to the working temperature, load conditions (such as load type, mode of action, speed, etc.) and working medium of the welding structure.
Welded structures are in a variety of environments. Welded structures operating at high temperatures require materials with sufficiently high high temperature strength, good chemical and structural stability, and high creep strength. The welding structure working at room temperature requires the material to have good mechanical properties in the natural environment. When the working temperature is low or subjected to impact load, special attention should be paid to the performance of the material at the lowest ambient temperature, especially the impact toughness, to prevent low temperature brittle failure. For the components bearing east load, the material is required to have good dynamic fracture toughness and shock absorption. When the working medium is corrosive, the welding area is required to have corrosion resistance. Welded structures working in a nuclear radiation environment, due to the effect of neutron radiation, will lead to an increase in the yield point of the material, a decrease in plasticity, an increase in the brittle transition temperature, a decrease in toughness, and an increase in the radiation brittleness of the material.
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