Research Of X80 Pipeline Steel Laminar Cooling Process

Due to increased industrial levels, the first level of the production pipeline is also increasing, from the previous steel X60, X70 to X80 steel or even steel X100 steel, the higher the intensity, the higher the level, the more capable of bearing pressure large.This paper studies the X80 steel laminar cooling process in the changes of the temperature field,to determine the different specifications of X80 steel laminar cooling process in the cooling mode, and the temperature in the cooling process to resolve the width direction of the problem of uneven X80 steel.In the laminar cooling process, the use of block edge technology, slowing the width direction uneven temperature problems.Designed and installed by independent laboratories Simple laminar flow cooling device, measure the amount of water of different, integrated surface heat transfer coefficient of X80 pipeline steel under pressure.The integrated surface heat transfer coefficients experimentally obtained X80 pipeline steel load to MARC finite element model was created, the simulated changes in temperature field X80 pipeline steel under different cooling modes.After comparing the final choice of suitable laminar cooling mode,the actual production has a certain significance.To solve the laminar cooling process X80 pipeline steel in the width direction of uneven temperature problems, blocked edge technology to be adopted to mitigate the temperature drop plate edge, making the steel temperature tends to be uniform across the width direction.MARC finite element simulation using a different amount of edge blocking effect of temperature field in the width direction of X80 pipeline steel after cooling, the optimal amount of edge cover calculated by fitting different specifications of X80 pipeline steel.