Segmented Induction Vessel for Amorphous Alloy Melting
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Solution Overview
Problem
In injection molding systems, maintaining uniform temperatures for melting materials is challenging, leading to issues with the quality of molded parts due to partial crystallization of bulk amorphous alloys during slow cooling or impurity presence.
Innovation Solution
A vessel with a melting portion configured to receive meltable material, featuring elongate segments electrically isolated from each other and an embedded induction coil, is used to melt the material effectively, maintaining controlled temperatures and preventing crystallization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional vessels are used for melting materials, then the melting process can be performed, but uniform temperature control is difficult leading to partial crystallization and quality issues
Solution Approach 1:
The vessel body is divided into multiple elongate segments that are electrically isolated from each other. Each segment can be independently heated by the induction coil, allowing for precise local temperature control. This segmentation enables uniform temperature distribution throughout the melting portion, preventing hot spots and cold zones that would cause partial crystallization and quality defects in molded parts.
Solution Approach 2:
The patent replaces conventional thermal conduction heating with electromagnetic induction heating. The induction coil generates an electromagnetic field that directly induces eddy currents in the conductive vessel segments, converting electromagnetic energy to thermal energy efficiently. This substitution provides faster, more uniform, and better controllable heating compared to traditional mechanical contact heating methods, ensuring consistent temperature throughout the melting process.
2Manufacturing precision
If bulk solidifying amorphous alloys are used, then quality molded parts can be produced, but the material is sensitive to cooling rate and impurities causing crystallization
Solution Approach 1:
The induction heating system provides continuous and uniform heating throughout the melting portion, maintaining the amorphous alloy material in a stable molten state. The segmented vessel design ensures continuous temperature uniformity, preventing localized cooling that would trigger crystallization. This continuous controlled heating action allows the material to remain in the desired amorphous state throughout the processing cycle, ensuring reliable production of high-quality molded parts.
Solution Approach 2:
The patent precisely controls the temperature parameters during melting using the induction heating system. By maintaining the material temperature within a specific range above the glass transition temperature but below the crystallization temperature, the amorphous structure is preserved. The ability to independently control each segment's temperature allows optimization of the thermal parameters to prevent crystallization while maintaining material flowability for molding.
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 solution ensures consistent melting and forming of bulk solidifying amorphous alloys, preventing crystallization and enhancing the quality of molded parts by maintaining the amorphous state, allowing for precise control of temperature and viscosity.
Implementation Method 1
an induction coil embedded within the body configured to melt the meltable material received in the melting portion
Implementation Method 2
an induction coil embedded within the body configured to melt the meltable material received in the melting portion
Implementation Method 3
a body with a melting portion configured to receive meltable material to be melted therein, the body having a plurality of elongate segments configured to be electrically isolated from each other
Data Source
AI summary
Vessels used for melting material to be injection molded to form a part are described. One vessel has a body formed from a plurality of elongate segments configured to be electrically isolated from each other and with a melting portion for melting meltable material therein. Material can be provided between adjacent segments. An induction coil can be used to melt the material in the body. Other vessels have a body with an embedded induction coil therein. The embedded coil can be configured to surround the melting portion, or can be positioned below and/or adjacent the melting portion, so that meltable material is melted. The vessels can be used to melt amorphous alloys, for example.


