Metal Structure with Movable Inorganic Particles for Sound Absorption
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Solution Overview
Problem
Conventional methods for producing metal structures with holes in a matrix and inorganic particles often result in hollow particles remaining unabsorbed, impairing the sound absorption, sound insulating, and soundproof qualities due to reduced mobility of inorganic particles within the matrix.
Innovation Solution
A method involving the formation of a slurry with inorganic particles covered by hollow particles, followed by mixing with metal powder and heating to melt or sinter, ensuring the inorganic particles are distributed within the matrix while being capable of independent movement, with optional fragmentation of hollow particles to enhance mobility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional methods (heating hollow micro glass capsules and white metal to melting, then kneading and solidifying) are used to produce metal structure, then the inorganic particles can be distributed in the matrix, but hollow particles remain unabsorbed and fail to melt, impairing sound absorption and sound insulating properties
Solution Approach 1:
The patent changes the processing parameters by controlling the heating temperature to be below the melting point of the hollow particles (e.g., heating white metal to melting at temperatures where glass capsules do not melt). This parameter change allows the hollow particles to remain intact while the metal matrix forms, preventing unabsorbed hollow particles from impairing sound absorption properties.
Solution Approach 2:
The patent creates a composite structure where inorganic particles are embedded within hollow particles, which are then embedded in the metal matrix. This composite approach (hollow particles containing inorganic particles, both within metal matrix) ensures proper distribution and maintains sound absorption properties by preventing hollow particle aggregation.
2Reliability
If hollow particles remain in the metal structure without being absorbed or fragmented, then the structure can be formed, but the inorganic particles cannot move independently from the matrix, reducing soundproof quality
Solution Approach 1:
The patent controls the heating temperature parameter to prevent hollow particle melting, ensuring they remain as distinct entities within the matrix. This allows inorganic particles to move independently within the hollow particles, maintaining soundproof quality through proper particle mobility.
3Manufacturing precision
If the heating temperature is increased to melt hollow particles for better absorption, then particle distribution improves, but hollow particles fail to remain intact and fragment, reducing sound absorption properties
Solution Approach 1:
The patent optimizes the heating temperature parameter to a specific range where the metal matrix can form properly but the hollow particles remain intact. This parameter optimization prevents hollow particle fragmentation while ensuring good absorption and distribution within the matrix, maintaining sound absorption properties.
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
This method increases the proportion of inorganic particles capable of moving independently within the matrix, thereby improving sound absorption, sound insulation, and soundproofing properties by reducing the number of remaining hollow particles and enhancing the distribution of inorganic particles within the metal structure.
Implementation Method 1
heating the mixture, thereby melting or sintering the metal powder to form a matrix
Implementation Method 2
heating the mixture, thereby melting or sintering the metal powder to form a matrix
Data Source
AI summary
The present disclosure provides a method for producing a metal structure having holes dispersed in a matrix and having inorganic particles disposed inside the holes, that are capable of moving in the holes independently of the matrix, the method making it possible to increase the proportion of inorganic particles in the metal structure that are capable of moving in the holes independently of the matrix. In the method for producing a metal structure whereby inorganic particles are disposed inside holes dispersed in a matrix so as to be capable of moving independently of the matrix, the hollow particles covering the inorganic particles which are distributed in the matrix of the metal structure are fragmented so that the inorganic particles are disposed inside the holes formed by fragmenting the hollow particles.