Steel pipe anaerobic annealing furnace

The steel pipe anaerobic annealing furnace heats the steel to a certain temperature and keeps it for a period of time, and then cools it slowly, which is called annealing. Steel pipe annealing is a heat treatment method in which the steel pipe is heated to a temperature at which phase change or partial phase change occurs, and then slowly cooled after heat preservation. The purpose of annealing is to eliminate structural defects, improve the structure, homogenize the composition and refine the grain, improve the mechanical properties of steel, and reduce residual stress; the oxygen-free annealing furnace for steel pipes can also reduce the hardness, increase the plasticity and toughness, and improve the cutting process. performance. Therefore, annealing is not only to eliminate and improve the structural defects and internal stress left by the previous process, but also to prepare for the subsequent process, so annealing is a semi-finished product heat treatment, also known as pre-heat treatment.