Metallurgical Furnace Cooling Pipe with Notched Interior Surface
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Solution Overview
Problem
The steel, foundry, and metal refining industry faces challenges with mechanical wear, corrosion, and safety hazards due to the accumulation and detachment of slag and other foreign materials on equipment surfaces during high-temperature metal processing, which can lead to equipment damage, safety risks, and off-specification molten metal.
Innovation Solution
A heat exchange apparatus comprising pipes with notched or smooth surfaces to promote or deter the adhesion of slag and foreign materials, manufactured from various materials and designed for use in metal processing devices to manage slag retention and prevent material intrusion into molten metal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If the equipment surface is made smooth, then slag adhesion is reduced, but mechanical wear protection is decreased
Solution Approach 1:
The patent applies different surface characteristics to different locations on the heat exchange apparatus. The exterior surface is made smooth to prevent slag adhesion and facilitate cleaning, while the interior surface maintains a rough or textured configuration to promote slag adhesion and protect the metal wall from mechanical wear and thermal damage. This local differentiation resolves the contradiction by allowing each surface to optimize for its specific functional requirement.
2Reliability
If slag is retained on the hot side, then equipment protection from liquid metal splashing is improved, but safety hazards increase due to potential detachment
Solution Approach 1:
The patent creates different surface environments on opposite sides of the heat exchange apparatus. The interior surface promotes slag adhesion to provide protective cushioning against liquid metal splashing, while the exterior surface discourages slag accumulation to eliminate safety hazards from detached slag falling on workers or equipment. This spatial differentiation resolves the contradiction by providing protection where needed while eliminating hazards where they would occur.
3Reliability
If a notched surface is used to promote slag adhesion, then equipment protection is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies the complex notched surface configuration only to the interior surface of the heat exchange apparatus where slag adhesion is beneficial for protection, while the exterior surface is manufactured with a simple smooth finish. This selective application reduces overall manufacturing complexity compared to making the entire apparatus with notched surfaces, while still achieving the protective function where required.
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 manages slag retention, reducing mechanical wear, preventing safety hazards, and maintaining molten metal quality by promoting or preventing slag adhesion as needed, thereby enhancing equipment longevity and operational safety.
Implementation Method 1
a pipe having walls defined by an inner boundary and an outer boundary, the inner boundary defining a core section... positioned in a metal processing device between an interior and a wall
Implementation Method 2
notches or indentions in its conduction surface to promote the adhesion of slag, siliceous or other foreign materials... or a substantially flat surface configured to deter or resist the adhesion of slag, siliceous or other foreign material
Data Source
Figure 1~4
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Figure 7
AI summary
A pipe (10, 10A, 20, 20A) and method of use for deterring or encouraging the retention of slag or other material in the operating area 25 of a metal processing system as desired. The deterring pipe(s) (20, 20A) and the encouraging pipe(s) (10, 10A) may be combined with other deterring pipe(s) and/or other encouraging pipe(s) in any combination as desired.