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US 8,941,032 B2Granted
Hardfacing ferroalloy materials
OwnerKevin Francis Dolmaninventor
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Abstract
A method of producing a carbide-containing ferroalloy welding consumable material and a method of producing a hardfacing on a suitable substrate using the consumable material are disclosed. The method of producing the consumable material comprises the steps of forming a homogeneous melt that has a required concentration of key elements, such as carbon, chromium and manganese, for the consumable material and forming a consumable material from the melt.
Claims11
A method of producing a chromium carbide-containing ferroalloy welding consumable material for subsequent use for producing a hardfacing on a suitable substrate comprising the steps of:
- (a) forming a homogeneous melt from a chromium-containing ferroalloy material and a source of free carbon by melting the chromium-containing ferroalloy material and the source of free carbon at a melt temperature and holding the melt temperature to dissolve carbon in the melt;
- and
- (b) forming, from the melt, a solid carbide-containing ferroalloy welding consumable material having a concentration of chemically combined carbon such that a chromium/carbon ratio is less than 7.0 and having a chromium content in a range of 30-65% by weight, wherein the melt temperature is held for a time to produce the concentration of chemically combined carbon in the ferroalloy welding consumable material.
Dependencies are inferred from the claim text.