Fluid-handling apparatus with corrosion-erosion coating and method of making same
OwnerHind Abi-Akar, Chris Scoltoninventors
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Abstract
Inlet surfaces of a fluid-handling apparatus, such as a heat exchanger, are often prone to corrosion and erosion due to the high velocities of incoming fluid. The present disclosure includes a fluid-handling apparatus with a plurality of wetted surfaces of which a first portion is corrosion-erosion prone and a second portion is non-corrosion-erosion prone. The first portion is coated with a corrosion-erosion coating that is harder than the first portion. Less than all of the wetted surfaces are coated.
Claims20
A fluid-handling apparatus comprising:
- an apparatus body including a plurality of wetted surfaces characterized in that a first portion of the wetted surfaces is corrosion-erosion prone and a second portion of the wetted surfaces is non-corrosion-erosion prone;
- a corrosion-erosion resistant coating coated on the first portion of the wetted surfaces, wherein the coating is harder than the apparatus body;
- and
- wherein less than all of the wetted surfaces are coated.
An engine system using sea water as a coolant comprising:
- an engine;
- and
- a heat exchanger being in fluid communication with the engine, and defining a sea water inlet fluidly connected with a plurality of wetted surfaces, and a first portion of the wetted surfaces being corrosion-erosion prone and a second portion of the wetted surfaces being non-corrosion-erosion prone;
- a corrosion-erosion resistant coating being coated on the first portion of the wetted surfaces, and wherein the coating is harder than the first portion;
- and less than all the wetted surfaces are coated.
A method of making a heat exchanger, comprising the steps of:
- assembling a plurality of components to include a plurality of wetted surfaces;
- distinguishing between corrosion-erosion prone wetted surfaces and non-corrosion-erosion prone wetted surfaces;
- and
- coating the corrosion-erosion prone wetted surfaces with a corrosion-erosion resistant coating being harder than the corrosion-erosion prone wetted surfaces.
The method of 18 wherein the step of coating being performed after the step of assembling.
Dependencies are inferred from the claim text.