| 摘要 |
PURPOSE:To obtain the titled composite body having superior wear resistance by infiltrating high Cr cast iron contg. specified percentages of C, Si, Mn, P, S, Ni, Cr and Mo into a porous molded ceramic body having specified porosity. CONSTITUTION:Ceramic granules of about 50-1,000mum grain size are molded to form a molded ceramic body having 20-80% porosity, and the ceramic body is put in a metallic mold for centrifugal casting and preheated to about 400- 1,200 deg.C. High Cr cast iron consisting of, by weight, 2.0-3.2% C, 0.5-2.5% Si, 0.5-1.5% Mn, <=0.25% P, <=0.06% S, 1.0-2.5% Ni, 10-25% Cr, 0.5-2.0% Mo and the balance essentially Fe is then infiltrated into the porous molded ceramic body by centrifugal casting to form an infiltrated layer. Thus, a ceramic-high Cr cast iron composite body having high wear resistance and usable as the material of the outer layer of a roller or a roll is obtd.
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