Carburizing in hydrocarbon gas
AssigneeBodycote Netherlands Holding BV
InventorsMarcel Somers, Thomas Christiansen
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Abstract
The invention relates to a method of gas carburizing a metallic article, where at least the surface region of the article consists of an alloy with a chromium content of at least 10 wt %. The carburizing is carried out by means of a gas containing carbon, which gas is heated to a temperature below approximately 5500C. The gas is an un-saturated hydrocarbon gas.
Claims19
A method of gas carburizing an article, where at least a surface region of the article comprises an alloy with a chromium content of at least 10 wt %, wherein the article is carburized with a gas for activation of the surface and as a source of carbon for diffusion into the surface, wherein the gas is heated to a temperature below 550° C., and wherein the gas comprises a halogenated unsaturated hydrocarbon gas.
A method of gas carburizing an article, where at least a surface region of the article comprises an alloy with a chromium content of at least 10 wt %, wherein the article is carburized with a gas for activation of the surface and as a source of carbon for diffusion into the surface, wherein the gas is heated to a temperature below 550° C., wherein the gas comprises an unsaturated hydrocarbon gas, and wherein at least the surface region of the article is made of sintered powder metal.
A method of gas carburizing an article, where at least a surface region of the article comprises an alloy with a chromium content of at least 10 wt %, wherein the article is carburized with a gas for activation of the surface and as a source of carbon for diffusion into the surface, wherein the gas is heated to a temperature below 550° C., wherein the gas comprises an unsaturated hydrocarbon gas, and wherein the carburizing is carried out in fluidized bed furnace.
Dependencies are inferred from the claim text.