Compact Shielding Gas Tool Layout for Tight-Space MIG Welding
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Solution Overview
Problem
Existing metal arc welding and soldering processes require large auxiliary tools due to long shielding gas flow paths, making them unsuitable for environments with limited installation space, such as seamed flange connections.
Innovation Solution
A compact auxiliary tool design that eliminates the need for a shielding gas nozzle by supplying shielding gas directly from the tool to the torch passage via a single, internal shielding gas channel, reducing flow path length and tool size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a radially outer annular chamber and nozzle chamber are used for shielding gas flow, then effective shielding of molten metal is achieved, but the auxiliary tool requires large installation space due to long flow paths
Solution Approach 1:
The invention extracts and eliminates the radially outer annular chamber and nozzle chamber from the auxiliary tool design. Instead, a shielding gas nozzle is integrated directly into the torch, and shielding gas is supplied through the torch passage. This extraction of the complex chamber structure resolves the contradiction by maintaining shielding effectiveness through the nozzle while dramatically reducing the auxiliary tool's installation space requirements.
Solution Approach 2:
The invention changes the dimensional arrangement of the shielding gas flow path. Rather than using a radially outer annular chamber that extends outward from the torch passage, the shielding gas is supplied axially through the torch passage itself via an integrated nozzle. This dimensional reorganization eliminates the need for large radial space while maintaining effective shielding gas delivery to the welding area.
2Reliability
If a torch with shielding gas nozzle is used, then shielding gas can be supplied effectively, but the torch requires frequent cleaning and has complex design
Solution Approach 1:
The invention merges the shielding gas nozzle function with the torch structure by integrating the nozzle directly into the torch passage. This combination eliminates the need for a separate auxiliary tool with complex chamber structures, simplifying the overall design while maintaining effective shielding gas supply to the welding area.
3Reliability
If radially outer annular chamber is used for shielding gas flow, then shielding gas flow path is established, but the auxiliary tool cannot be used in environments with limited installation space
Solution Approach 1:
The invention extracts the radially outer annular chamber from the design and replaces it with a compact shielding gas nozzle integrated into the torch. This extraction enables the system to function effectively in space-limited environments by establishing the necessary shielding gas flow path through a much more compact configuration that does not require large radial space.
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 compact auxiliary tool allows for efficient welding or soldering in space-limited environments by minimizing installation space requirements while maintaining effective shielding of the molten metal.
Implementation Method 1
The shielding gas can flow into the torch passage via the shielding gas connection to shield the molten metal in the welding or soldering point
Data Source
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AI summary
The invention relates to a process arrangement for a metal inert gas welding or brazing process, by means of which a weld or braze joint (19) can be formed to join a component assembly (1). The process arrangement includes an auxiliary tool (27) that protects the area adjacent to the weld or braze joint (19) from soot during the welding or brazing process. According to the invention, the auxiliary tool (27) is designed with at least one shielding gas channel (41) that connects a shielding gas connection (43) of the auxiliary tool (27) directly, i.e., in particular without the need for intermediate flow chambers, to a torch passage (33) of the auxiliary tool (27).