Hollow Pipe Sandwich Metal Plate for Uniform Brazing and Heat Resistance
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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 strength, and incorporating thermal insulation materials for improved stability and thermal management.
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 strength and durability greatly decrease when exposed to high temperature or fire
Solution Approach 1:
The patent changes the material parameter from organic honeycomb to inorganic hollow pipes, and changes the connection parameter from low-temperature welding to high-temperature brazing, enabling the structure to maintain strength at high temperatures
Solution Approach 2:
The patent creates a composite structure combining metal hollow pipes with flanges and panels, where the metal materials provide both structural strength and temperature resistance, overcoming the limitations of single-material honeycomb plates
2Device complexity
If honeycomb cores are arranged tightly together, then the structure achieves compact design, but gas flow cannot flow uniformly during heating causing nonuniform welding and false welding
Solution Approach 1:
The patent segments the tightly arranged honeycomb cores into spaced hollow pipes with gaps between them, allowing gas flow to penetrate and distribute uniformly across all components during heating and brazing
Solution Approach 2:
The patent introduces gas passages as intermediaries between hollow pipes, enabling uniform gas distribution and heat transfer throughout the structure, which ensures consistent brazing quality across all components
3Ease of manufacture
If radiation heating is used to weld honeycomb cores, then the welding process can be completed, but heating is slow causing nonuniform heating, thermal deformation, and prolonged working time requiring separate cooling chamber
Solution Approach 1:
The patent uses gas-based heating through gas passages instead of radiation heating, allowing direct contact between heating medium and workpiece, which dramatically increases heating efficiency and uniformity
Solution Approach 2:
The patent combines heating and cooling functions into a single chamber by introducing gas passages that allow controlled gas flow for both heating during brazing and cooling after processing, eliminating the need for a separate cooling chamber and reducing working time
4Ease of manufacture
If low-and-medium-temperature welding is used to connect honeycomb plates, then the welding process is simple, but the welding strength is insufficient and the structure cannot bear high temperature loads
Solution Approach 1:
The patent changes the welding parameter from low-and-medium temperature welding to high-temperature brazing, which provides significantly higher welding strength and temperature resistance while maintaining manufacturing feasibility
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, temperature resistance, and efficient brazing with uniform heating, enhancing structural stability and extending service life while reducing production costs and assembly time.
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
the hollow pipes are connected to the first panel and the second panel by brazing
Data Source
AI summary
Disclosed are 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.