High-Purity Copper Alloy Melting With Inert Gas Degassing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing technologies have not effectively addressed the challenge of reducing impurities in copper-based alloys, particularly oxygen and oxygen-related impurities, which degrade mechanical properties and increase failure rates in copper-based components.
Innovation Solution
An enclosed melting furnace under an inert atmosphere is used to form a molten copper-based alloy, with inert gas bubbling to remove impurities, followed by controlled transfer to a transfer ladle and molds to maintain low oxygen content during solidification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional melting methods are used to produce copper-based alloys, then production efficiency is maintained, but oxygen and oxygen-related impurities accumulate in the molten alloy, degrading mechanical properties
Solution Approach 1:
The patent employs an enclosed melting furnace that maintains an inert atmosphere (such as argon or nitrogen) throughout the melting and casting process. This inert environment prevents oxidation of the copper-based alloy by excluding oxygen, thereby eliminating the formation of oxygen-related impurities while maintaining production efficiency. The inert atmosphere is sustained from charging the feedstock through melting, holding, and casting into molds.
Solution Approach 2:
The patent incorporates a slag removal system that actively extracts oxygen-related impurities from the molten alloy. A slag layer forms on the surface of the molten copper-based alloy, capturing oxygen and other impurities. The system includes mechanisms to remove this slag layer, effectively extracting harmful oxygen-related substances from the alloy before casting, thereby improving mechanical properties without compromising production efficiency.
2Manufacturing precision
If traditional open melting furnaces are used, then equipment complexity is low, but impurity removal efficiency is insufficient
Solution Approach 1:
The enclosed melting furnace is designed to maintain a controlled inert atmosphere throughout the entire melting and casting process. The furnace includes sealed chambers, inert gas supply systems, and atmospheric control mechanisms that ensure oxygen exclusion. This sophisticated atmospheric control enables high impurity removal efficiency while the systematic design integrates these complex functions into a cohesive manufacturing system.
Solution Approach 2:
The patent introduces an intermediate slag layer as a mediator between the molten alloy and the atmosphere. This slag layer acts as a barrier that captures oxygen and impurities, preventing them from entering the alloy. The slag removal system then extracts this intermediate layer, effectively removing impurities without requiring direct interaction between the alloy and complex purification equipment.
3Productivity
If rapid cooling is applied during solidification, then production cycle time is reduced, but turbulence introduces new impurities into the alloy
Solution Approach 1:
The inert atmosphere is maintained throughout the entire solidification process within the enclosed furnace system. As the molten alloy cools and solidifies in molds, the inert environment prevents oxidation and impurity introduction. This allows for controlled cooling rates that can be optimized for both productivity and purity, as the inert atmosphere eliminates the harmful effect of turbulence-induced impurities.
Solution Approach 2:
The patent maintains continuous inert atmosphere protection throughout the entire process from melting through solidification without interruption. The enclosed system ensures that the useful action of impurity exclusion continues uninterrupted during cooling, allowing for optimized cooling rates that balance productivity with purity requirements, as the protective atmosphere persists throughout the entire cycle.
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 method effectively reduces oxygen and oxygen-related impurities, enhancing mechanical properties such as tensile strength and ductility, thereby improving the quality and longevity of copper-based components.
Implementation Method 1
bubble an inert gas through the molten copper-based alloy
Implementation Method 2
form a molten copper-based alloy comprising at least 50 weight % copper under an enclosed inert atmosphere
Implementation Method 3
transfer the molten copper-based alloy into one or more molds or a shot pit configured to solidify the molten copper-based alloy
Data Source
AI summary
In an aspect, a method of manufacturing a high purity copper-based alloy comprises providing in a melting furnace a feedstock and melting the feedstock. The method additionally includes bubbling an inert gas into the molten copper-based alloy to form the high purity copper-based alloy. Aspects are also directed to an apparatus and a method of fabricating an apparatus for manufacturing the high purity copper-based alloy.