Composite Ingot Casting Temperature Compensation
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Solution Overview
Problem
Existing methods for casting composite metal ingots face challenges due to temperature variations of molten metals, leading to potential rupture or failure at the metal-metal interface and hindered metal flow, which are not effectively addressed by existing technologies.
Innovation Solution
An apparatus with temperature sensors and a controller adjusts the casting speed to compensate for temperature differences between molten metal streams, ensuring optimal metal-metal interface formation by varying cooling rates and metal depths within the casting mold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the metal streams are cast at higher temperatures to maintain liquid flow, then the metal flow is improved, but the metal-metal interface may rupture or fail due to excessive heat
Solution Approach 1:
The patent implements dynamic temperature control by independently adjusting the temperature of each metal stream based on real-time monitoring. The system dynamically modifies casting parameters such as cooling water flow rates and metal stream temperatures during the casting process to maintain optimal interface conditions while ensuring continuous metal flow.
Solution Approach 2:
The patent changes physical parameters of the metal streams, specifically temperature and flow rate, to resolve the contradiction. By precisely controlling the temperature of each metal stream separately, the system ensures that metals remain sufficiently liquid for flow while preventing excessive heat that would cause interface rupture.
2Reliability
If the metal streams are cooled to lower temperatures to prevent interface rupture, then the interface integrity is improved, but the metal flow is hindered due to partial or complete freezing
Solution Approach 1:
The system dynamically adjusts cooling rates and metal stream temperatures in real-time based on feedback from temperature sensors. This dynamic control prevents premature freezing that would hinder flow while maintaining temperatures low enough to prevent interface rupture from excessive heat.
Solution Approach 2:
The patent employs temperature sensors to continuously monitor the temperature of each metal stream and provides feedback to the control system. This feedback mechanism allows the system to automatically adjust cooling rates and flow parameters to maintain optimal temperatures for both interface integrity and metal flow.
3Productivity
If the casting speed is increased to improve productivity, then the production rate is improved, but the temperature control precision deteriorates due to reduced cooling time
Solution Approach 1:
The system dynamically adjusts cooling water flow rates and metal stream temperatures in response to varying casting speeds. When casting speed increases, the system compensates by adjusting cooling parameters to maintain precise temperature control despite reduced cooling time, thereby preserving manufacturing precision while improving productivity.
Solution Approach 2:
The patent modifies cooling parameters and metal stream temperatures as functions of casting speed. By changing these parameters dynamically based on the casting rate, the system maintains optimal temperature control precision across a range of productivity levels.
4Manufacturing precision
If multiple temperature sensors and control systems are added to monitor and adjust metal stream temperatures, then the temperature control precision is improved, but the device complexity increases
Solution Approach 1:
The patent divides the temperature control system into separate, independent control loops for each metal stream. Each stream has its own temperature sensor and control mechanisms, allowing precise control of individual streams without requiring a single complex centralized system. This segmentation simplifies the overall control architecture while maintaining high precision.
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 prevents interface failures and ensures consistent casting by dynamically adjusting casting variables like speed, cooling rates, and metal depths, effectively managing temperature fluctuations and maintaining ingot quality.
Implementation Method 1
at least two temperature sensors configured for monitoring inlet temperatures of one or more of the streams of molten metal
Implementation Method 2
a controller configured for adjusting ingot casting speed as a casting variable that affects molten metal temperatures entering or within the casting chambers
Implementation Method 3
a controller configured for adjusting ingot casting speed as a casting variable that affects molten metal temperatures entering or within the casting chambers and affects all of the metal layers
Data Source
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AI summary
An exemplary embodiment of the invention provides an apparatus for casting a composite metal ingot. The apparatus comprises a direct chill casting apparatus having a casting mold with at least two chambers for casting a composite ingot, troughs for supplying streams of molten metal to said at least two casting chambers, at least one temperature sensor for monitoring inlet temperatures of one or more of said streams of molten metal at positions adjacent to inlets of the casting chambers fed with said streams, a device for comparing said monitored temperatures from said at least one temperature sensor with predetermined set temperatures for said one or more streams to detect temperature differences for said streams, and a controller for adjusting a casting variable that affects molten metal temperatures entering or within the casting chambers by an amount based on a temperature difference detected for at least one of said streams.