Multi-Torch Brazing Profiles for Overheat-Safe Aluminum Joining
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Solution Overview
Problem
Manual brazing of metal components, particularly aluminum, is prone to overheating and damage due to operator error, especially when using brazing filler metals with melting points close to the components.
Innovation Solution
An automated brazing system with a movable table, shuttle, and multiple torch carriages equipped with actuators and a mass flow controller to control gas flow, enabling precise control of heating profiles for single or simultaneous brazed connections, reducing the risk of overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual brazing is performed by an operator, then flexibility and adaptability are maintained, but operator error causes overheating and component damage
Solution Approach 1:
The automated brazing system performs brazing operations autonomously without human intervention. The controller automatically controls the torch carriage movement, heating parameters, and brazing process based on pre-programmed sequences, eliminating operator error while maintaining consistent quality across all brazing operations
Solution Approach 2:
The patent replaces manual mechanical operation with an automated control system that uses sensors, controllers, and programmable logic to manage the brazing process. The controller monitors and adjusts heating parameters, torch position, and gas flow rates automatically, substituting human skill with electronic control systems
2Productivity
If multiple brazed connections are made simultaneously, then productivity increases, but control of heating profiles becomes more complex
Solution Approach 1:
The brazing system divides the heating process into separate controllable zones with individual torches for each brazing position. Each torch can be independently controlled with its own heating profile, allowing multiple connections to be made simultaneously while maintaining precise control over each individual brazing zone
Solution Approach 2:
The controller dynamically adjusts heating parameters for each torch based on real-time process conditions and pre-programmed sequences. The system can modify heating rates, temperature setpoints, and torch positions dynamically during the brazing process to accommodate multiple connections with different thermal requirements
3Reliability
If automated brazing system is implemented, then operator error is eliminated, but device complexity increases
Solution Approach 1:
The automated brazing system is designed with multi-functional components that perform multiple operations. The torch carriage can position multiple torches, the controller manages various process parameters, and the system can adapt to different brazing configurations, reducing the need for separate dedicated devices for each function
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 system effectively prevents component damage by automating the brazing process, ensuring consistent and controlled heating profiles, thereby improving the quality and efficiency of brazed connections.
Implementation Method 1
A mass flow controller having flow control valves can control the flow of the fuel gas and combustion-assisting gas to the torch during a brazing operation
Implementation Method 2
Brazing typically involves the use of a torch provided with two gasses. One of the gases will include a flammable fuel gas such as LP gas, natural gas, acetylene gas, methane, propane, butane, hydrogen and mixtures and combinations thereof, while the other gas will include a combustion-assisting gas such as oxygen or pressurized air
Implementation Method 3
Brazing is used to join metal members together with a brazing filler, i.e., a metal or alloy having a lower melting point than the metals to be joined
Data Source
AI summary
A brazing system includes a first brazing torch, a second brazing torch, a third brazing torch, a torch carriage having an actuator system configured to rotate the first brazing torch, the second brazing torch, and the third brazing torch simultaneously from a substantially vertical orientation to a substantially horizontal operation, and a mass flow controller configured to control respective flows of gas to each of the first brazing torch, the second brazing torch, and the third brazing torch. The mass flow controller controls the respective flows of gas based on either a first heating profile for making a single brazed connection using two of the first brazing torch, the second brazing torch, and the third brazing torch, and a second heating profile for making two brazed connections simultaneously using each of the first brazing torch, the second brazing torch, and the third brazing torch.