METHOD OF PRESSURE PARTS' OF STEEL,MECHANICAL PROPERTIES REGENERATION

摘要

A method of regeneration of mechanical properties of pressure parts from chrome-molybdenum and chrome-molybdenum-vanadium and other steels which have been in long-term use, particularly under pressure from a gas containing hydrogen at high temperature, during which steel parts are annealed in a flow of air or inert gas in vacuum at a temperature between 580 and 780 degrees C for 0.5 to 10 hours, whereupon they are cooled under control to 300 to 350 degrees C and cooled in calm air.IMAGE