A Water-Air Circulation Cooling Process Used for Normalizing Structure and Performance Control of Hypoeutectoid Steel Medium- and Thick-Walled Seamless Steel Pipes
杨煌光, 姚火能, 杨玲, et al. A Water-Air Circulation Cooling Process Used for Normalizing Structure and Performance Control of Hypoeutectoid Steel Medium- and Thick-Walled Seamless Steel Pipes[J]. Special Steel, 2021, 42(3): 47-51.
杨煌光, 姚火能, 杨玲, et al. A Water-Air Circulation Cooling Process Used for Normalizing Structure and Performance Control of Hypoeutectoid Steel Medium- and Thick-Walled Seamless Steel Pipes[J]. Special Steel, 2021, 42(3): 47-51.DOI:
In order to study the normalizing cooling rate and the cooling uniformity of hypoeutectoid steel medium- and thick-walled seamless steel tube with wall thickness ≥30 mm
the water-air circulation cooling model is used for the normalizing structure and performance control of medium- and low-carbon Mn steel medium- and thick-walled seamless tube. Based on analysis on structure and properties of normalized steel tube with fen cooling
water fog forced cooling and water-air circulation cooling
the water-air circulation cooling process-immersing part of the steel pipe body in water and high speed rotating meanwhile
and controlling the depth of immersion
the rotation speed of steel tube and the total cooling time
of medium- and thick-walled pipe
the performance of yield strength ≥500 MPa
-20℃ V-type impact energy≥100 J based on the stable structure of ferrite + pearlite are obtained.