Development of Large Size Bearing Steel GCr15SiMn
WEN Xiaode
Abstract：Laiwu Steel Special Steel Department adopted the process flow, that is hot metal charging+steel scrap→100 t EAF→LF→VD→CC(Φ500 mm)→slow cooling in pit→ heating→ rolling(Φ1 350 × 1 + Φ950 × 4+ Φ800 × 2)→slow cooling in pit→finishing for producing Φ120 mm GCr15SiMn bearing steel. By adopting some measures such as optimizing smelting process, protective casting, weak secondary cooling, controlling heating and large compression ratio rolling, developed GCr15SiMn bearing steel had uniform composition and high purity. The oxygen content was controlled between 9×10-6 and 10×10-6. The carbide band level is all below 1.5 grade, the liquation carbonide is 0.5 grade and all indicators met the requirements of technical standard.
Keywords：GCR15SIMN bearing steellarge sizeround billetproduct development
Publication Date：2014-09-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：3( 14-16 )