One-piece Feeder Body with Protrusions for Casting Residue Separation
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Solution Overview
Problem
Existing single-part feeder bodies in metal casting often result in residual feeders that are difficult to separate from the casting due to conical narrowing or close underside configurations, making it challenging to use a hydraulically driven separating wedge effectively.
Innovation Solution
The feeder body features one or more material recesses on its inner surface that form outwardly protruding projections during metal solidification, creating counterbearings for a separating wedge, allowing for targeted engagement and easier removal of residual feeders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the feeder body has a conventional design without material recesses, then the manufacturing process is simpler, but the separation of residual feeders becomes difficult and dangerous
Solution Approach 1:
The material recesses are pre-formed in the feeder body during manufacturing, creating defined separation surfaces before the casting process. This preliminary structuring enables the separating wedge to effectively engage with the residual feeder later, transforming a potentially dangerous manual separation process into a controlled mechanical operation.
Solution Approach 2:
The material recesses act as an intermediary structure that facilitates the interaction between the separating wedge and the residual feeder. By providing defined engagement surfaces, the recesses mediate the separation process, allowing the wedge to apply force effectively without requiring direct contact with irregular feeder surfaces.
2Ease of operation
If the residual feeder has conical narrowing or close underside configuration, then the feeder body design is simpler, but the separating wedge cannot be effectively placed
Solution Approach 1:
Instead of requiring the entire residual feeder to have a specific geometry, the invention introduces localized material recesses at specific positions on the feeder body. These local features create the necessary engagement surfaces for the separating wedge, while the rest of the feeder can maintain its functional conical or close-underside configuration.
3Object-affected harmful factors
If manual separation using a hammer is used, then no additional feeder body features are needed, but the risk of injury is considerably increased
Solution Approach 1:
The feeder body's own structure (the material recesses) serves the dual purpose of containing the molten metal during casting and providing the engagement surfaces needed for safe separation. This self-service approach eliminates the need for external safety equipment or complex separation mechanisms, reducing injury risk while maintaining structural simplicity.
Data Source
AI summary
The invention relates to a single-part feeder body for use as a feeder insert or component of a two-part or multi-part feeder insert in metal casting, having a feeder wall which at least partially delimits a feeder cavity for receiving liquid metal, wherein the feeder wall has an inner surface facing toward the feeder cavity, an outer surface for bearing against a mold material that surrounds the feeder body in certain regions, and a passage opening for the liquid metal into the feeder cavity, wherein the feeder wall has, on the inside, one, two or more material recesses for forming one or more outwardly protruding projections on the metal solidifying within the feeder cavity.