Production of Ni-Cr-Mo-V Low Alloy Steel Forgings in India: A Critical Review of Some Important Technology Aspects

摘要

Nickel-chromium-molybdenum-vanadium based low alloy steels are employed extensively all over the world for manufacture of large cross-sectioned forgings, e.g., long shafts sometimes with a number of steps over the length. The forgings find applications in power generation sector and other critical areas where high strength, high hardness and good toughness constitute important requirements. Different variants of the NiCrMoV based low alloy steels have been produced in the country and there have been some important developments over the last two to three decades in their processing. Major improvements have been made with reference to quality and reliability of end product. In this paper some of these important developments have been critically analysed.