Development of P22 Tube Blank Steel for High Pressure Boiler Tube
YUAN Shujun
LI Yecai
Abstract：Based on the technology of steel requirements, the chemical composition and internal control requirements of the steel were designed. Using clean steel technology to control S, P and inclusion, selecting high-quality scrap and molten iron to control As, Sn, Pb, Sb, Bi and other harmful elements, and the Ca treatment can reduce the harm of the inclusion. P22 tube blank steel was produced by the process“EAF-LF-VD-CC”in Laiwu Steel, physical quality inspection shows that the steel is pure, the trace harmful elements are low, the temper brittleness sensitivity coefficient J and the CEF value were controlled ideal, the macrostructure and surface quality of the round billet are better.
Keywords：P22 tube blank steellarge size round billettemper brittleness sensitivity coefficientinclusion
Publication Date：2016-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：3( 15-17 )