Locally Hardened Wire Guide Conduit for Lower Friction Wear
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Solution Overview
Problem
Existing wire guide conduits used in MIG welding systems face issues with friction and wear, leading to decreased efficiency and service life, due to the use of soft metal alloys and the exposure of sharp edges when the conduit is bent.
Innovation Solution
A wire guide conduit constructed from coiled wire with an oval or elliptical cross-section, featuring locally hardened regions created through surface heat treatment, such as laser treatment, to reduce wear and friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If soft metal alloys are used to construct the wire guide conduit, then the conduit maintains flexibility and formability, but friction and wear increase leading to decreased service life
Solution Approach 1:
The patent applies local quality by creating hardened regions at specific locations on the conduit surface where wear occurs, while maintaining soft metal alloy composition in other areas to preserve flexibility and formability. This selective hardening resolves the contradiction by providing wear resistance only where needed rather than hardening the entire conduit structure.
Solution Approach 2:
The patent creates a composite structure by combining soft metal alloy base material with surface-applied hardened regions or coatings. This composite approach allows the conduit to simultaneously exhibit flexibility from the soft base material and wear resistance from the hardened surface layers, resolving the contradiction between softness and durability.
2Adaptability or versatility
If the conduit is bent during operation, then adaptability to tortuous passages is improved, but sharp edges are exposed causing damage to the electrode wire
Solution Approach 1:
The patent applies local quality by providing protective coatings or surface treatments specifically at locations where sharp edges would form during bending, while leaving other areas of the conduit unchanged. This targeted approach protects the electrode wire from damage at critical locations while maintaining the conduit's overall flexibility and bendability.
Solution Approach 2:
The patent implements beforehand cushioning by pre-applying protective coatings or surface treatments to the conduit before it is installed and subjected to bending forces. This preventive measure ensures that when the conduit is bent during operation, the protective layer is already in place to cushion and protect the electrode wire from sharp edges, rather than allowing damage to occur and then remedying it.
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 locally hardened regions act as wear bars, reducing friction and wear on the electrode wire, thereby improving the longevity and efficiency of the wire guide conduit.
Implementation Method 1
surface heat treatment process is performed to create locally hardened regions along the wire of the wire guide conduit. Such locally hardened regions can be provided by, for example, laser treatment
Implementation Method 2
Before the wire is formed into the coil, a surface heat treatment process is performed to create locally hardened regions along the wire
Data Source
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AI summary
A wire guide conduit is constructed from a coiled wire having an oval or elliptical cross-sectional shape. The wire is subjected to a directed energy beam to locally heat portions of the wire to create discrete areas of increased hardness in the surface of the wire. The wire is coiled to present the locally hardened regions on an inside passageway of the conduit. The wire guide conduit may be used in additional applications such as a control wire for an actuation system.