Composite Cored Wire Cladding for In-Situ Carbide Wear Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a need for a cost-effective cored wire that can form metal matrix composite claddings to provide protection against corrosion, erosion, and wear in industries such as power generation, oil and gas, automotive, defense, and aerospace, using thermal spray techniques like twin wire-arc spraying.
Innovation Solution
A cored wire with an outer metallic sheath and an inner core powder mixture, including metals and master alloys, is used in wire arc spraying to create a composite cladding with a metal matrix reinforced by ceramic carbides, enhancing corrosion and wear resistance through a chemical reaction during deposition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional thermal spray techniques are used, then coating application can be achieved, but the resistance to corrosion, erosion, and wear is insufficient
Solution Approach 1:
The patent applies composite materials by combining metal matrix with ceramic carbide reinforcements (such as chromium carbide, titanium carbide, niobium carbide, zirconium carbide, vanadium carbide, tungsten carbide, or molybdenum carbide) to create a composite cladding material that provides superior corrosion, erosion, and wear resistance compared to conventional single-material coatings
Solution Approach 2:
The patent changes the chemical composition parameters by incorporating specific master alloys (nickel niobium, chromium niobium, aluminum cobalt, chromium aluminum, and ferroalloys) and controlling the fill content (15% to 50% by weight) to optimize the formation of ceramic carbides during the wire arc spraying process, thereby achieving enhanced protective properties
2Reliability
If ceramic carbides are incorporated to enhance protection, then resistance to corrosion, erosion, and wear improves, but manufacturing cost increases
Solution Approach 1:
The patent applies preliminary action by pre-mixing the ceramic carbide powders with master alloys and metal powders in the inner core powder before encapsulation in the outer metallic sheath, allowing the composite material to be prepared in advance and reducing on-site manufacturing complexity and costs
Solution Approach 2:
The patent applies self-service by designing the cored wire structure where the outer metallic sheath contains and protects the inner core powder mixture during handling and storage, and the wire arc spraying process itself facilitates the chemical reactions and composite formation without requiring additional external equipment or processes
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The process produces effective metal matrix composite claddings that enhance material properties for surface protection, offering superior resistance to corrosion, erosion, and wear, while being cost-effective.
Implementation Method 1
providing an electric power to melt the fabricated cored wire
Implementation Method 2
utilizing a wire arc spraying system comprising a positive electrode and a negative electrode
Implementation Method 3
the components of the fabricated core wire chemically react to create a composite metal coating
Implementation Method 4
Thermal spraying techniques are coating techniques in which melted, vaporized, ionized, or otherwise heated are delivered materials in a spray form and applied onto a surface
Data Source
AI summary
An innovative cored wire to produce composite claddings containing hard niobium carbide for protection against corrosion, erosion and wear. The cored wire contains an outer wire metallic sheath comprising of metal alloy base, and an innovative core powder mixture. The innovative core powder mixture contains metal alloy or metal, chromium carbide and carbon. During the deposition process, the cored wire melts, and chemically reacts to form metal matrix composite cladding comprising of metal alloy matrix with the newly formed respective metal carbide particles.