Wear-resistant alloy, and method of making same
AssigneeCaterpillar Tractor Co.
InventorsPreston L. Gale, Eugene L. Helton, Robert C. Mueller
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Abstract
A wear-resistant alloy comprising boron, chromium and iron having maximum hardness for a given composition is produced by rapidly cooling and solidfying spheroidal particles of the molten alloy mixture. The resultant solid particles are then cast in the desired form, or incorporated into a composite alloy wherein the solid particles are held together with a matrix of different material from the alloy.
Claims4
A method for improving the hardness characteristics of an alloy consisting essentially of about 25 to about 61% by weight chromium, about 6 to about 12% by weight boron, and the balance iron comprising the steps of producing cast spheroidal particles thereof by streaming the molten alloy onto a hard surface thus breaking up the molten alloy into droplets and thereafter rapidly quenching and solidifying the molten alloy with a quench liquid while still in the droplet configuration.
A method for improving the hardness characteristics of an alloy consisting essentially of about 61 to about 70% by weight chromium, about 6 to about 12% by weight boron, about 0.05 to about 2% carbon, and the balance iron comprising the steps of producing cast spheroidal particles thereof by streaming the molten alloy onto a hard surface thus breaking up the molten alloy into droplets and thereafter rapidly quenching and solidifying the molten alloy with a quench liquid while still in the droplet configuration.
A wear-resistant alloy comprising about 61 to about 70% by weight chromium, about 6 to about 12% by weight boron, about 0.05 to about 2% carbon, and the balance iron in the form of cast spheroidal particles.
A wear-resistant alloy consisting essentially of about 25 to about 61% by weight chromium, about 6 to about 12% by weight boron, and the balance iron, in the form of cast spheroidal particles having a Knoop hardness at least about 200 Kg/mm.sup.2 greater than said alloy in ingot form.
Dependencies are inferred from the claim text.