Metal treatment – Stock – Ferrous
Patent
1988-04-06
1989-06-20
Yee, Deborah
Metal treatment
Stock
Ferrous
148320, 148902, 241170, 241184, C22C 3822
Patent
active
048406864
ABSTRACT:
A carbon or alloy steel heat treated grinding rod having improved wear resistance and breaking resistance for use in a rotating grinding mill. The surface of the rod has a martensitic microstructure having a hardness of at least HRC 55. The core of the rod has a bainitic microstructure having a hardness of at least HRC 40. A preferred rod composition includes at least 0.7% carbon, at least 0.25% of molybdenum, at least 0.25% chromium, less than 0.7% manganese, the balance iron and unavoidable impurities, all percentages by weight.
REFERENCES:
patent: 3895972 (1975-07-01), Woodilla et al.
patent: 4016009 (1977-04-01), Economopoulos et al.
patent: 4016015 (1977-04-01), Respen et al.
patent: 4023988 (1976-05-01), Stickels et al.
patent: 4589934 (1986-05-01), Glodowski et al.
Simon et al., "Tempcore: A New Process for the Production of High-Quality Reinforcing Bars", Iron and Steel Engineer, Mar. 1984, pp. 53-57.
Reen-Hill, "The Iron-Carbon System", Physical Metallurgy Principals 2 nd Edition, 1973, pp. 681-687.
D. E. Nass, Steel Grinding Media in Production Use, Nov. 1975, pp. 33-41.
K. H. Z. Gahr, Relation Between Abrasive Wear Rate and the Microstructure of Metals, pp. 266-274.
T. E. Norman, Factors Influencing the Resistance of Steel Castings to High Stress Abrasion, 1958, pp. 187-196.
Y. J. Park et al., Effects of Manganese, Chromium, and Molybdenum on the Isothermal Transformation of Austenite in Eutectoid Steels, Jun. 1986, pp. 247-252.
Arnett Charles R.
Bruner James P.
Armco Inc.
Bunyard R. J.
Fillnow L. A.
Johnson R. H.
Yee Deborah
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