Continuous Eutectic Alloy Fine Particle Production With Viscosity Control
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Solution Overview
Problem
Existing methods for producing eutectic alloy fine particles face challenges in achieving uniform particle size, high circularity, and efficient production without the need for costly equipment or additional processing steps.
Innovation Solution
A method involving an atomizer with rotating processing surfaces that disperse a melt of eutectic alloy in a solvent, controlling particle diameter by adjusting solvent viscosity, and cooling the dispersed droplets to form solid particles, eliminating the need for classification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional atomization methods are used to produce metal fine particles, then production cost is reduced, but particle size distribution becomes polydisperse requiring additional classification steps
Solution Approach 1:
The invention changes the physical parameters of the atomization process by introducing a rotating disk with controlled rotation speed and adjusting the melt flow rate and droplet formation conditions. This enables continuous production of monodisperse particles with uniform size distribution without requiring post-classification, resolving the contradiction between cost-effective production and particle size uniformity
Solution Approach 2:
The invention implements continuous atomization through a rotating disk system that continuously forms uniform droplets from molten metal. The continuous operation with controlled parameters ensures consistent particle size distribution throughout production, eliminating the need for intermittent classification steps while maintaining manufacturing efficiency
2Length of moving object
If high-speed rotation is used in disk atomization to reduce particle size, then average particle diameter decreases, but disk wear increases
Solution Approach 1:
The invention optimizes the rotation speed parameter to achieve the desired particle size while minimizing disk wear. By carefully controlling the rotation speed, melt flow rate, and droplet formation conditions, the system produces fine particles with uniform size distribution without subjecting the disk to excessive mechanical stress, thereby extending disk service life
Solution Approach 2:
The invention reduces reliance on high-speed mechanical rotation by using controlled melt flow and droplet formation mechanisms. This substitution of mechanical force with controlled fluid dynamics allows particle size reduction without proportionally increasing disk wear, maintaining both fine particle production and disk durability
3Manufacturing precision
If classification step is added to obtain uniform particles, then particle size uniformity improves, but production efficiency decreases
Solution Approach 1:
The invention performs the particle size control action during the atomization process itself rather than after production. By controlling droplet formation parameters in advance, uniform particles are produced directly in the atomization chamber, eliminating the need for subsequent classification steps and maintaining high production efficiency
Solution Approach 2:
The invention merges the particle formation and size control functions into a single atomization process. The rotating disk system simultaneously performs melting, droplet formation, and size uniformity control in one continuous operation, eliminating the need for separate classification equipment and steps, thereby maintaining production efficiency while achieving uniform particle size
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
Produces eutectic alloy fine particles with narrow particle size distribution and high circularity, enabling efficient production without additional processing steps and reducing costs.
Implementation Method 1
the fluid to be processed is introduced continuously into an atomizer in which the fluid is atomized between at least two processing surfaces arranged opposite to each other
Implementation Method 2
the melt of the eutectic alloy and the solvent which go through via a dispersion state, which are both in a liquid state in the atomizer, and then, the fluid discharged from the atomizer is cooled
Data Source
AI summary
The present invention addresses the problem of providing a method for continuously producing eutectic alloy fine particles, the method enabling the production of eutectic alloy particles, the particle diameters of which are easily controlled. The present invention provides a method for producing eutectic alloy fine particles that have a particle diameter of 0.1 μm to 50 μm, wherein: a fluid to be processed containing at least a melt of a eutectic alloy, the melt that serves as a dispersoid, and a solvent that serves as a dispersion medium is used; the fluid to be processed is continuously introduced an atomizer which atomizes the fluid to be processed between at least two processing surfaces that are arranged to face each other; the fluid to be processed goes through a dispersion state in which the melt of a eutectic alloy and the solvent are both in a liquid state within the atomizer; and solid eutectic alloy fine particles are obtained by cooling the fluid discharged from the atomizer. With respect to this method for producing eutectic alloy fine particles, the melt of a eutectic alloy is dispersed in the solvent in the form of droplets between the at least two processing surfaces; and the particle diameters of the melt of a eutectic alloy in the form of droplets are controlled by changing the viscosity of the solvent to be introduced between the at least two processing surfaces.