Feeder Netlike Fabric Breaking Point Casting Residue
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Solution Overview
Problem
Existing feeders in metal casting leave solidified residues that require extensive cleaning efforts after demolding, as the solidified material often remains in the feeder body.
Innovation Solution
A feeder design featuring a ring-shaped frame made of heat-resistant material with a net-like fabric stretched within it, positioned on the feeder body's bottom surface, allowing for a predetermined breaking point on the casting surface and reducing cleaning efforts, with the frame being easier to manufacture and resistant to melting from hot metal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional feeder body is used with solidified residues remaining in the feeder body, then the feeder can perform its function of compensating volume deficits during solidification, but extensive cleaning efforts are required after demolding
Solution Approach 1:
The feeder body is segmented into two functional zones: an upper feeder body that retains material and a lower breaker core zone that facilitates clean separation. The breaker core acts as a detachable segment that breaks off with minimal residue, dividing the feeder into functional portions that serve different purposes in the casting process.
Solution Approach 2:
The harmful element (feeder residue) is extracted from the casting by introducing a breaker core that creates a predetermined breaking point. The breaker core is designed to break away from the casting, taking the solidified feeder material with it and leaving the casting surface clean and free of residues requiring extensive cleaning.
2Ease of manufacture
If a net-like fabric is arranged on the feeder body to create a breaking point, then the fabric may be drawn into the mold cavity and casting structure during metal flow, but the fabric is needed to facilitate breaker core formation
Solution Approach 1:
The net-like fabric is positioned specifically at the breaker core location on the feeder body, creating a localized breaking point only where needed. The fabric mesh structure provides controlled weakness for breaking while the surrounding feeder body maintains its structural integrity and prevents fabric intrusion into the mold cavity during metal flow.
Solution Approach 2:
The breaker core is designed with asymmetric properties: the net-like fabric creates a predetermined weak point that is strategically positioned to break in a specific direction away from the casting. This asymmetric design ensures the fabric serves its breaking function without being drawn into the mold cavity, as the break occurs at an angle or position that prevents fabric intrusion.
3Productivity
If the frame with net-like fabric is positioned on the bottom surface of the feeder body, then the breaking point is shifted to the casting surface reducing cleaning effort, but the frame structure adds manufacturing complexity
Solution Approach 1:
The frame structure holding the net-like fabric is merged with the breaker core assembly, integrating the fabric support function into the existing breaker core design. This combination eliminates the need for separate frame components and simplifies manufacturing by consolidating the fabric-holding structure with the breaker core that is already part of the feeder body.
Solution Approach 2:
The frame structure serves multiple functions: it holds the net-like fabric in tension, provides structural support for the breaker core, and creates the predetermined breaking point geometry. By designing the frame to perform multiple functions simultaneously, the apparent complexity is reduced as a single component accomplishes what would otherwise require multiple separate elements.
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 minimizes additional cleaning efforts by shifting the breaking point to the casting surface and ensuring the net-like fabric remains taut, reducing flow resistance and preventing harmful combustion gases, thus simplifying the separation process.
Implementation Method 1
a net-like fabric consisting of a refractory material and spanning the feeder opening is arranged on the feeder body
Implementation Method 2
a ring-shaped frame made of a heat-resistant material with the net-like fabric stretched therein is fixed to the feeder body
Implementation Method 3
the feeders consist of an exothermic and/or insulating material
Implementation Method 4
the feeders consist of an exothermic and/or insulating material
Data Source
Figure 1~3
Figure 4~5
AI summary
A feeder (10) in the form of a head feeder for insertion into a casting mold used in the casting of metals, comprising a feeder body (11) enclosing an inner cavity (12) as the feeder volume and made of an exothermic and/or insulating material, which has a feeder opening (16) in its bottom surface (15) facing the mold cavity formed in the casting mold for connecting the inner cavity (12) of the feeder body (11) with the mold cavity of the casting mold during the casting process, characterized in that an annular frame (17) made of a heat-resistant material is fixed to the feeder body (11) with a net-like fabric (18) made of a refractory material stretched therein, which spans the feeder opening (16) of the feeder body (11), wherein the frame (17) is arranged on the bottom surface (15) of the feeder body (11) such thatthat the net-like fabric (18) is positioned directly on the surface of the casting formed by the pouring process when the feeder (10) is molded into the mold.