Hollow Pipe Sandwich Metal Plate for Uniform Brazing Heating
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Honeycomb sandwich composite plates are sensitive to temperature changes, leading to reduced strength, poor durability, and inefficient welding processes, which limits their use in bearing structures and hinders high-temperature resistance and uniform heating.
Innovation Solution
A hollow pipe-sandwiching metal plate design featuring panels with hollow pipes connected by brazing, utilizing through gas passages for uniform heating and flanges for enhanced welding areas, allowing for high-temperature gas flow to melt brazing filler metal without damaging the base metal, and incorporating thermal insulation materials for improved structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If honeycomb plates are used in sandwich composite structures, then the structure achieves light weight and basic strength, but the structure becomes extremely sensitive to temperature changes, leading to great decrease in strength and poor durability
Solution Approach 1:
The honeycomb core is segmented into multiple independent hollow pipe units arranged in an array. Each hollow pipe acts as an independent load-bearing element, which prevents the propagation of damage and reduces sensitivity to temperature changes compared to a continuous honeycomb structure.
Solution Approach 2:
The invention uses composite construction by combining hollow pipes with flange structures and filling materials (such as foam or ceramic) to create a multi-material sandwich panel that maintains strength while improving thermal stability and durability.
2Volume of stationary object
If honeycomb cores are arranged tightly together for compact structure, then space utilization is improved, but gas flow cannot flow uniformly during heating, causing nonuniform welding and false welding
Solution Approach 1:
The hollow pipes are equipped with localized flange structures at specific positions, which create designated gas flow channels and heating zones. This local differentiation allows uniform gas distribution and heating while maintaining compact overall arrangement of the core structure.
Solution Approach 2:
Gas flow passages act as intermediaries between the external heating source and the hollow pipe structures. These passages ensure uniform distribution of heating gas to all hollow pipes, preventing nonuniform heating and welding defects.
3Ease of manufacture
If radiation heating is used to weld honeycomb cores, then welding can be achieved, but heating is slow and nonuniform, leading to thermal deformation and increased defective rate
Solution Approach 1:
The invention replaces radiation heating with pneumatic heating by flowing high-temperature gas through dedicated passages. This direct gas contact heating method achieves uniform and rapid heating of all hollow pipes simultaneously, eliminating thermal deformation and significantly improving heating efficiency and productivity.
4Temperature
If honeycomb cores are heated and then transported to cooling chamber for cooling, then cooling can be achieved, but heating and cooling cannot be completed in one step, prolonging working time and lowering efficiency
Solution Approach 1:
The gas passage system serves multiple functions: it delivers heating gas during the heating phase, and then the same passages can deliver cooling gas during the cooling phase. This multi-functionality allows heating and cooling to be performed in sequence within a single chamber, eliminating the need for separate transportation to cooling chambers and significantly reducing working time.
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 hollow pipe-sandwiching metal plate achieves high strength, thermal insulation, and stability, enabling its use in various applications while overcoming the limitations of honeycomb plates, including improved welding efficiency and resistance to high temperatures.
Implementation Method 1
High-temperature gas is utilized to flow through the gas passages for heating to braze the hollow pipes to the first panel and the second panel
Implementation Method 2
the hollow pipes are connected to the first panel and the second panel by brazing
Implementation Method 3
High-temperature gas is utilized to flow through the gas passages for heating to braze the hollow pipes to the first panel and the second panel
Implementation Method 4
incorporating thermal insulation materials for improved structural integrity
Data Source
AI summary
Disclosed is a method for forming a hollow pipe-sandwiching metal plate and applications thereof. The hollow pipe-sandwiching metal plate comprises a first panel, a second panel, and multiple hollow pipes between the first panel and the second panel; gaps are arranged among the hollow pipes, and the hollow pipes are connected to the first panel and the second panel by brazing. The present disclosure further includes the applications of the hollow pipe-sandwiching metal plate. The hollow pipe-sandwiching metal plate has advantages, such as light weight, high strength, low stress, high temperature resistance, pressure bearing, thermal insulation and vibration isolation. The metal plate will not deform due to thermal difference, thereby providing permanent service life of the metal plate.