CAST IRON FOR WORKING LAYER OF FLOUR-GRINDING ROLLS Russian patent published in 1997 - IPC

FIELD: ferrous metallurgy particular, devising of composition of wear-resistant cast iron applicable for working layer of flour-grinding rolls. SUBSTANCE: cast iron working layer of flour-grinding rolls contains, mas.%: carbon 3.4-3.7; silicon 0.1-0.5; manganese 0.8-1.2; nickel 0.3-0.5; phosphorus 0.4-0.7; boron 0.01-0.08; aluminum 0.01-0.10; chromium 0.01-0.04; sulfur 0.005-0.05; the balance, iron. EFFECT: higher wear resistance and ultimate strength, and capability of material to maintain and recondition the relief of rough surface under the action of grains and grain products across cross-section and length of roll working layer. 2 tbl