Segmented Feeder Insert for Metal Casting Insulation
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Solution Overview
Problem
Existing feeder inserts for metal casting are costly to manufacture and lack effective insulation to keep liquid metal at elevated temperatures, which affects the casting process and requires complex geometries that are difficult to produce using conventional methods.
Innovation Solution
The feeder body is divided into two or more feeder shells that are connected using form-fit or substance-to-substance joining, allowing for the production of complex geometries without internal cavities, and featuring protrusions and recesses for positive locking, which enhances insulation and simplifies manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional means are used to manufacture feeder inserts with complex geometries resembling spherical shapes, then insulation effect is improved and liquid metal can be kept at elevated temperatures longer, but manufacturing cost increases greatly
Solution Approach 1:
The feeder body is divided into multiple segments (first feeder body segment and second feeder body segment) that can be manufactured separately using conventional means and then assembled. This segmentation allows complex spherical geometries to be produced through modular construction, reducing manufacturing cost while maintaining the insulation properties of the complete spherical shape.
Solution Approach 2:
The patent employs nested structures where feeder body segments contain internal cavities that are filled with insulating material. This nesting approach allows the creation of complex insulated geometries by placing insulating material within the walls or cavities of the feeder body segments, achieving effective insulation without requiring expensive monolithic spherical manufacturing.
2Reliability
If feeder inserts with complex geometries are produced to improve insulation, then temperature retention is improved, but production complexity and cost increase
Solution Approach 1:
By dividing the feeder body into multiple segments, the complex spherical geometry is broken down into simpler, manufacturable parts. Each segment can be produced using standard manufacturing processes, and the overall complex shape is achieved through the assembly of these segments, reducing production complexity while maintaining insulation effectiveness.
Solution Approach 2:
The feeder insert employs composite construction where the feeder body segments are combined with insulating materials (such as ceramic foam or refractory materials) to create a composite structure. This composite approach achieves effective insulation through material properties rather than relying solely on complex geometric shapes, simplifying the overall device complexity.
3Reliability
If one-piece feeder inserts are used to prevent element breakage, then reliability is improved, but production of complex geometries becomes more difficult and expensive
Solution Approach 1:
The feeder body is segmented into multiple sections that are designed to work together as an integrated unit. These segments are connected through precisely engineered interfaces that ensure structural integrity and prevent breakage during use. The segmentation allows each part to be manufactured separately using conventional means, making complex geometries more manufacturable while maintaining the reliability of a unified structure.
Solution Approach 2:
Multiple feeder body segments are merged through assembly processes that create a unified structural unit. The segments are connected using joining methods (such as mechanical interlocking, welding, or bonding) that ensure the assembled structure has comparable integrity to a one-piece construction, while benefiting from the manufacturing advantages of segmentation.
Data Source
AI summary
The invention relates to a feeder insert (1, 1′, 1″, 1″′, 100, 100′) for use in metal casting in casting molds, comprising a feeder body (2, 2′, 2″, 2″′, 102, 102′) which delimits a feeder cavity (4, 4′, 4″, 4″′, 104, 104′) for receiving liquid metal, wherein the feeder body (2, 2′, 2″, 2″′, 102, 102′) has a first end (6, 6′, 6″, 6″′, 106, 106′) having a passage opening (8) for the liquid metal and a second end (10, 10′, 10″, 10″′, 110, 110′) opposite the first end (6, 6′, 6″, 6″′, 106, 106′), and wherein the feeder body (2, 2′, 2″, 2″′, 102, 102′) comprises a central axis (Z) extending through the passage opening (8). The feeder body (2, 2′, 2″, 2″′, 102, 102′) is separated at least one partition plane (E) extending in a direction of the central axis (Z) and is formed at least from a first feeder shell (18, 18′, 18″, 18″′, 118, 118′) and a second feeder shell (20, 20′, 20″, 20″′, 120, 120′). The first and second feeder shells (18, 18′, 18″, 18″′, 118, 118′) are connected to each other to form the feeder body (2, 2′, 2″, 2″′, 102, 102′).