Steel Casting Runner Protection Tube Composition for Refractory Strength
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Solution Overview
Problem
Conventional casting runner protection tubes for steel casting lack refractoriness, strength, water resistance, and high temperature stability, necessitating improvements in these properties.
Innovation Solution
A runner protection tube for steel casting is manufactured using a slurry composition comprising organic fibers, inorganic fibers, thermosetting resins, thermoplastic resins, inorganic particles, inorganic binders, water, lubricating oil, and a hydrating agent, with specific weight percentages for each component, and a manufacturing process involving pulping, refining, kneading, extruding, and carbon dioxide hardening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If refractory materials such as ceramics are used to manufacture casting runner protection tubes, then the basic function of isolating molten material from molding sand is achieved, but the refractoriness, strength, water resistance and high temperature stability are insufficient
Solution Approach 1:
The patent uses a composite material system consisting of organic fibers (5-15 wt%), inorganic fibers (15-25 wt%), thermosetting resins (5-15 wt%), thermoplastic resins (1-10 wt%), and inorganic particles (20-40 wt%) to create a slurry composition that forms runner protection tubes with superior refractoriness, strength, water resistance, and high temperature stability compared to conventional ceramic-only materials
Solution Approach 2:
The patent optimizes the weight percentages of each component in the slurry composition to achieve the desired balance of properties. By controlling the content ranges of organic fibers (5-15 wt%), inorganic fibers (15-25 wt%), thermosetting resins (5-15 wt%), thermoplastic resins (1-10 wt%), and inorganic particles (20-40 wt%), the material achieves enhanced performance while maintaining manufacturability
2Strength
If conventional ceramic materials are used for runner protection tubes, then the basic isolation function is provided, but strength and water resistance are inadequate
Solution Approach 1:
The composite slurry composition combines multiple fiber types (organic and inorganic) with resins and inorganic particles to create a reinforced material structure that significantly improves strength while maintaining ease of manufacture through a systematic manufacturing process
Solution Approach 2:
The patent employs a slurry-based forming process that creates a flexible, moldable material that can be shaped into runner protection tubes with precise thickness control (0.5-2.0 mm), improving both strength and manufacturability compared to rigid ceramic forming
3Stability of the object's composition
If conventional runner protection tubes are used, then basic sand washing prevention is achieved, but high temperature stability is insufficient
Solution Approach 1:
The patent uses a composite material system with inorganic fibers (15-25 wt%), thermosetting resins (5-15 wt%), and inorganic particles (20-40 wt%) that provide exceptional high temperature stability while maintaining manufacturability through a controlled slurry forming and curing process
Solution Approach 2:
The patent optimizes the chemical composition parameters of the slurry, including the weight percentages of inorganic fibers (15-25 wt%), thermosetting resins (5-15 wt%), and inorganic particles (20-40 wt%), to achieve superior high temperature stability while controlling the manufacturing process through defined steps from slurry preparation to final drying
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 provides a runner protection tube with enhanced refractoriness, strength, water resistance, and high temperature stability, while also improving demolding performance and reducing energy consumption through controlled thickness and moisture content.
Implementation Method 1
carbon dioxide is blown into the connecting holes for hardening process through the inorganic binders to form a molded body
Implementation Method 2
a lubricating oil and a hydrating agent... The lubricating oil makes the runner protection tube does not stick to the kneader, extruder or other equipment after kneading
Implementation Method 3
the hydrating agent reduces the consistency of semi-finished products and makes them smoother when used
Implementation Method 4
The molded body is put into an oven for drying, so as to form the runner protection tube for steel casting
Data Source
AI summary
The disclosure provides a runner protection tube for steel casting and a manufacturing method thereof. The runner protection tube for steel casting is made of a slurry composition for forming the runner protection tube for steel casting, the slurry composition includes organic fibers, inorganic fibers, thermosetting resins, thermoplastic resins, inorganic particles, inorganic binders, water, a lubricating oil and a hydrating agent.