Continuously Cooled Orbital Weld Head for High-Amperage Welding
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Solution Overview
Problem
Conventional orbital welding machines are unable to handle high amperage welding applications due to overheating and mechanical property degradation, limiting their ability to perform repeated welds on materials like copper, which require higher amperages for sound welds.
Innovation Solution
A continuously cooled orbital weld head constructed with thermally conductive materials, such as aluminum and copper, featuring multiple fluid flow paths and cooling channels to act as a heat sink, allowing for high-amperage welding without damage, using a pump, heat exchanger, and cooling fans to manage heat effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional orbital welding machines operate at high amperage, then welding capability on materials like copper is improved, but overheating and mechanical property degradation occur
Solution Approach 1:
The weld head body material is changed from conventional insulative materials to thermally conductive materials (aluminum, copper, or copper alloy) with specific thermal conductivity parameters (≥100 W/m·K). This parameter change enables efficient heat dissipation while maintaining structural integrity at high amperage welding conditions
Solution Approach 2:
A fluid cooling system is integrated into the weld head body with cooling channels that circulate coolant to continuously remove heat generated during high amperage welding. This hydraulic cooling mechanism prevents overheating and maintains weld head reliability during repeated high-power operations
2Power
If standard weld head materials are used, then ease of manufacture is maintained, but the ability to withstand high amperage heat is insufficient
Solution Approach 1:
The weld head body is constructed using composite material approaches, combining thermally conductive base materials (aluminum or copper) with appropriate structural components. This allows the weld head to withstand high amperage heat while maintaining manufacturability through established metalworking processes
3Productivity
If repeated welds are performed on high-conductive materials like copper, then productivity is improved, but heat accumulation damages the weld head
Solution Approach 1:
A continuous fluid cooling system is implemented with cooling channels throughout the weld head body, providing uninterrupted heat removal during repeated welding operations. This continuous cooling action enables sustained high-productivity welding on conductive materials without heat accumulation damage
Solution Approach 2:
Coolant fluid acts as an intermediary heat transfer medium between the weld head body and the external cooling system. The fluid circulates through internal channels, absorbing heat from the weld head and carrying it away, enabling repeated welds without temperature buildup
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
Enables the orbital weld head to operate at amperages two to four times higher than standard machines, maintaining weld integrity and durability, thus supporting high-production environments by effectively transferring and dissipating heat.
Implementation Method 1
A continuously cooled orbital weld head that can operate at much higher heat and at much higher amperage than previous welding solutions
Implementation Method 2
the weld head body being made out of a highly conductive material, offering super critical cooling of the weld head body
Implementation Method 3
The weld head body may include multiple flow paths designed for high flow of coolant into the weld head body
Implementation Method 4
at least one pressurized fluid input line that attaches to the cooling channels and conducts a pressurized fluid coolant to the cooling channels
Data Source
AI summary
The present disclosure describes a system including a support structure configured to provide support for various orbital welding components. The system also includes an orbital weld head body attached to the support structure. The orbital weld head body is made of a thermally conductive material and includes at least one cooling bar that spans at least a portion of the length of the orbital weld head body. The cooling bar includes various internal cooling channels to route coolant through the cooling bar of the orbital weld head body. The orbital weld head body also includes at least one pressurized fluid input line that attaches to the internal cooling channels of the cooling bar and conducts a fluid coolant to the internal cooling channels of the cooling bar. Other apparatuses and orbital welding machines are also described.