Tip Plate with Localized Material Zones for Glass Fibre Bushing
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Solution Overview
Problem
Existing tip plates for glass fibre production suffer from decreased strength at high temperatures and under continuous mechanical load, leading to reduced service life and non-uniform fibre quality.
Innovation Solution
A tip plate design with sections of varying physical properties and chemical compositions, utilizing additive manufacturing to create bespoke structures such as lattice structures, hollow spaces, and varying thicknesses, to enhance mechanical strength and thermal management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a uniform material tip plate is used, then manufacturing is simple and uniform melting conditions are achieved, but mechanical strength decreases at high temperatures and under continuous load
Solution Approach 1:
The tip plate is divided into multiple zones with different material compositions tailored to local requirements. The first zone (center) uses a material with higher melting point and lower thermal expansion coefficient to withstand higher temperatures and mechanical loads, while the second zone (periphery) uses a material with better thermal conductivity to dissipate heat. This local differentiation optimizes mechanical strength where needed without compromising overall manufacturability.
Solution Approach 2:
The tip plate employs a composite structure with two different materials having distinct properties. The first material (for the first zone) has higher melting point and lower thermal expansion coefficient, while the second material (for the second zone) has higher thermal conductivity. This composite approach allows the tip plate to simultaneously achieve high mechanical strength in critical areas and effective thermal management, resolving the contradiction between simplicity and strength.
2Ease of manufacture
If a uniform material tip plate is used, then manufacturing is simple, but thermal management becomes non-uniform leading to quality issues
Solution Approach 1:
Different zones of the tip plate are assigned materials with optimized thermal properties for their specific locations. The periphery zone receives material with higher thermal conductivity to actively dissipate heat and prevent overheating, while the center zone uses material suited for high-temperature resistance. This creates a thermally optimized structure that maintains uniform temperature distribution across the tip plate.
Solution Approach 2:
The composite material structure enables differentiated thermal management across the tip plate. By combining materials with different thermal conductivities in specific zones, the design achieves superior thermal uniformity compared to uniform materials, while remaining manufacturable through established ceramic or metal matrix composite processes.
3Temperature
If the tip plate operates at high temperatures, then glass fibre production is enabled, but service life decreases due to material degradation
Solution Approach 1:
The first zone, subjected to the highest temperatures and mechanical loads, is constructed from material with the highest melting point and lowest thermal expansion coefficient to maximize resistance to thermal degradation. This localized optimization of material properties in the most critical high-temperature zone extends the overall service life of the tip plate while enabling continuous operation at required temperatures.
Solution Approach 2:
The multi-material composite structure allows each zone to be optimized for its specific thermal environment. The first material resists high-temperature degradation in the critical center zone, while the second material provides thermal management in cooler periphery zones. This differentiated approach maximizes the service life of the entire tip plate under high-temperature operating conditions.
Data Source
Figure 1a~1c
Figure 2
Figure 3a~3c
AI summary
The invention relates to a tip plate for a bushing for receiving a high temperature melt, which tip plate comprises several sections of different type, while the invention further includes a corresponding bushing to produce glass fibres.