Brazed Assembly End-Sheet Venting for Uniform Bond Formation
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Solution Overview
Problem
Incomplete brazing due to trapped heat, gas, and vapor during the brazing process results in weaker bonds and non-uniform assembly fabrication, especially in larger assemblies, where venting becomes more challenging.
Innovation Solution
Incorporating venting features such as holes or slots on the interior surfaces of end sheets to channel heat, gas, and vapor out of the assembly, ensuring complete and uniform brazing or directing them to specific areas for controlled incomplete brazing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional brazing process is used without venting features, then the assembly structure remains solid and intact, but heat, gas, and vapor become trapped during brazing causing incomplete brazing and weaker bonds
Solution Approach 1:
The end sheets are segmented by incorporating venting features (holes or slots) that divide the solid structure into regions that allow controlled passage of heat, gas, and vapor. This segmentation enables the brazing process to proceed uniformly by preventing trapping of harmful factors while maintaining structural integrity of the overall assembly.
Solution Approach 2:
The venting features act as intermediaries that facilitate the controlled movement of heat, gas, and vapor during the brazing process. These features mediate between the conflicting requirements of maintaining a solid structure and allowing necessary venting, enabling complete and uniform brazing without compromising the overall assembly strength.
2Manufacturing precision
If venting features are added to end sheets, then complete and uniform brazing is achieved, but the end sheet structure becomes more complex
Solution Approach 1:
The venting features segment the end sheet into functional regions (venting areas and structural areas). This segmentation allows the end sheet to simultaneously provide structural support and facilitate controlled venting of heat, gas, and vapor, achieving uniform brazing without excessive complexity.
Solution Approach 2:
The venting features are strategically positioned and sized to provide local venting functionality only where needed during the brazing process. This local quality approach ensures that the end sheet maintains its overall structural integrity while incorporating minimal necessary complexity for achieving uniform brazing.
3Quantity of substance
If larger assembly size is used, then more material is processed and greater functionality is achieved, but venting becomes more challenging and incomplete brazing occurs
Solution Approach 1:
The venting features segment the large assembly into multiple venting zones, allowing heat, gas, and vapor to escape from different regions simultaneously. This segmentation enables effective venting across large assembly sizes, preventing trapped harmful factors and ensuring complete brazing throughout the entire structure.
Solution Approach 2:
The venting features introduce a new dimensional aspect to the brazing process by creating pathways through the end sheets. This dimensional change allows heat, gas, and vapor to move in additional directions, improving venting efficiency in larger assemblies where traditional single-direction venting becomes insufficient.
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
Ensures uniform and complete brazing by effectively venting heat, gas, and vapor, resulting in stronger bonds and improved assembly quality.
Implementation Method 1
The interior surface of the first end sheet or the interior surface of the second end sheet includes one or more venting features, the one or more venting features including holes or slots to channel heat, gas, or vapor during a brazing process to braze the first end sheet, the two or more interior sheets, and the second end sheet into the assembly
Implementation Method 2
The one or more venting features include a series of holes that channel the heat, the gas, or the vapor from the interior surface through to the exterior surface of the first end sheet or the second end sheet
Data Source
AI summary
Systems and methods to control fabrication of an assembly involve a first end sheet having an interior surface and an exterior surface, opposite the interior surface. A system includes interior sheets, the interior sheets including a first interior sheet at one end of a stack of the interior sheets and including a last interior sheet at an opposite end of the stack of the two or more interior sheets, the first interior sheet being adjacent to the interior surface of the first end sheet, and a second end sheet having an interior surface and an exterior surface, opposite the interior surface. The last interior sheet is adjacent to the interior surface of the last end sheet, and the interior surface of the first end sheet or the second end sheet includes venting features, the venting features including holes or slots to channel heat, gas, or vapor during a brazing process.