Oxidation resistant low alloy attachments for boiler components
AssigneeThe Babcock & Wilcox Company
InventorGeorge H. Harth, III
Life of this patent
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Abstract
A boiler attachment used to support a boiler component within the furnace or boiler chamber is composed of a similar material to the boiler component it is welded to, in order to eliminate the dissimilar weld failure. The boiler attachment is coated using a diffusion coating method to cover the attachments with a coating of aluminum, chromium, silicon or a combination thereof.
Claims11
An attachment for welding to one of a superheater and reheater boiler component composed of a first material, comprising:
- support means for holding the one of the superheater and reheater boiler component in a position within an industrial furnace or boiler made of one of the first material and a second material having a similar coefficient of thermal expansion and chemistry as the first material, the support means being coated by a diffusion coating with a coating of one of aluminum, chromium, silicon, and mixtures thereof.
A superheater or reheater boiler component for use in an industrial boiler or furnace having improved functional life and structural stability in high temperature regions, the superheater or reheater boiler component comprising:
- a plurality of tubes composed of a first material;
- and
- welded attachment means for supporting the plurality of tubes in a position within the industrial furnace or boiler, made of one of the first material and a second material having a similar coefficient of thermal expansion and chemistry as the first material, and being coated by a diffusion coating with a coating of one of aluminum, chromium, silicon, and mixtures thereof.
Dependencies are inferred from the claim text.