Stirring Device with Integrated Degassing and Feeding for Aluminum Composites
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Solution Overview
Problem
Conventional stirring devices for stir-melting processes face issues with oxide formation, agglomeration, and uneven distribution of reinforcing particles in aluminum-based composites, leading to prolonged mixing times and potential industrial accidents due to surface tension and oxide inhibition.
Innovation Solution
A stirring device with integrated degassing and feeding functions, featuring a graphite shaft and stirring head, inert gas supply, and a feeding unit to transport additives directly into the metal melt, overcoming oxide formation and ensuring uniform distribution by removing slag and gas and forcing additives into the melt.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If reinforcing particles are added onto the surface of the aluminum matrix in the furnace, then the particles can be mixed with the matrix, but oxide formed on the surface is carried into the matrix causing surrounding oxide that inhibits wetting and prolongs mixing time
Solution Approach 1:
The patent applies preliminary action by pre-heating the reinforcing particles in a heating unit before they are fed into the aluminum matrix. This preliminary heating removes oxide layers from the particle surfaces in advance, preventing oxide contamination during the mixing process and reducing the time required for effective wetting and distribution.
Solution Approach 2:
The patent extracts and removes oxide from the reinforcing particles through a dedicated heating unit that pre-treats the particles before feeding. This extraction of harmful oxide substances allows the particles to be introduced into the matrix without carrying oxide that would otherwise inhibit wetting and prolong mixing time.
2Productivity
If reinforcing particles are added to the furnace, then mixing can proceed, but agglomerates form causing microporosity and uneven distribution
Solution Approach 1:
The patent applies preliminary action by pre-heating reinforcing particles in a heating unit before feeding them into the aluminum matrix. This preliminary treatment prevents particle agglomeration by removing oxide layers and preparing particles for uniform distribution, thereby eliminating microporosity and ensuring homogeneous mixing without requiring extended mixing times.
3Ease of operation
If reinforcing particles are added to the furnace, then mixing can occur, but surface tension on the aluminum matrix hinders lightweight particles from entering, causing them to spill out
Solution Approach 1:
The patent applies preliminary action by pre-heating reinforcing particles in a heating unit before feeding them into the aluminum matrix. This preliminary heating removes oxide layers from particle surfaces, reducing surface tension barriers and enabling lightweight particles to enter the matrix easily without spilling out, thereby improving ease of operation.
Solution Approach 2:
The patent extracts oxide from the reinforcing particles through pre-heating treatment before feeding. This removal of harmful oxide substances eliminates the surface tension barrier that would otherwise prevent lightweight particles from entering the aluminum matrix, allowing smooth feeding and preventing spillage.
4Ease of operation
If oxide is present on particle surfaces, then particles can be fed into the furnace, but oxide surrounds reinforcing particles inhibiting aluminum matrix wetting
Solution Approach 1:
The patent applies preliminary action by pre-heating reinforcing particles in a heating unit before feeding them into the aluminum matrix. This preliminary treatment removes oxide layers from particle surfaces in advance, ensuring that particles are fed into the furnace without harmful oxide coatings, thereby maintaining reliable wetting quality between the aluminum matrix and reinforcing particles.
Solution Approach 2:
The patent extracts oxide from the reinforcing particles through pre-heating treatment before feeding into the furnace. This extraction eliminates oxide that would otherwise surround particles and inhibit aluminum matrix wetting, ensuring reliable bonding while maintaining ease of particle feeding.
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 solution effectively addresses oxide formation and agglomeration issues, enhancing mixing efficiency and safety by ensuring uniform distribution of reinforcing particles within the aluminum matrix, reducing microporosity and operational risks.
Implementation Method 1
a gas supply (71) and a piping member (72) fluidly communicating with the gas supply (71) and the hollow rotary shaft (622)
Implementation Method 2
a feeding tube (81) fluidly communicating with the storage tank (82) and the hollow rotary shaft (622)
Implementation Method 3
a stirring head (625) coupled to rotate with the hollow rotary shaft (622) so as to stir the metal melt (3) in the furnace (4)
Data Source
AI summary
A stirring device includes a stirring unit, a gas supplying unit, and a feeding unit. The stirring unit includes a drive mechanism and a shaft member. The shaft member includes a hollow rotary shaft coupled to be driven by the drive mechanism to rotate, and a stirring head coupled to rotate with the hollow rotary shaft. The gas supplying unit includes a gas supply, and a piping member fluidly communicating with the gas supply and the shaft member. The feeding unit includes a storage tank and a feeding tube fluidly communicating with the storage tank and the shaft member.