Lead Strip Caster Nozzle Layout to Block Dross Inclusions
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Solution Overview
Problem
Conventional lead strip casting machines draw impurities and dross from the molten lead pool into the cast strip, leading to deformations and defects in the grid wires, which can degrade battery performance and shorten its useful life.
Innovation Solution
A lead strip caster design featuring a ladle, a nozzle with dual passages, and rotating rollers that control the flow and hardening of molten lead, preventing impurities and dross from entering the cast strip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional block mold casting is used, then equipment investment is reduced, but production efficiency is low and labor intensity is high
Solution Approach 1:
The casting process is segmented into distinct functional zones: molten metal storage, filtration, electromagnetic stirring, and continuous casting. Each zone operates independently with specialized equipment, allowing optimized control of each process stage while maintaining overall system productivity.
Solution Approach 2:
Traditional mechanical block mold casting is replaced with an automated continuous casting system that uses electromagnetic fields for stirring and controlled solidification. This substitution eliminates manual labor and significantly increases production efficiency while reducing labor intensity.
2Manufacturing precision
If manual sampling and inspection are used, then equipment complexity is reduced, but quality consistency cannot be ensured
Solution Approach 1:
Online spectrometers and sensors continuously monitor molten metal composition and casting parameters throughout the entire casting process. This continuous real-time inspection ensures consistent quality control without interruption to production, replacing intermittent manual sampling with uninterrupted automated monitoring.
Solution Approach 2:
The inspection system provides real-time feedback on metal composition and casting quality parameters. This feedback loop allows immediate adjustments to processing parameters to maintain quality consistency, ensuring that any deviations from specifications are corrected promptly rather than detected only after production.
3Loss of energy
If conventional casting methods are used, then equipment investment is low, but energy consumption is high and environmental pollution occurs
Solution Approach 1:
The system utilizes controlled phase transitions of molten metal, including electromagnetic stirring during liquid phase and controlled solidification during phase change. This efficient use of phase transitions reduces energy consumption compared to conventional methods that require continuous heating and mechanical handling.
Solution Approach 2:
The continuous casting system employs hydraulic and pneumatic mechanisms for automated mold movement, cooling water circulation, and slag removal. These fluid-based systems are more energy-efficient than equivalent mechanical systems while enabling automated operation that reduces overall energy consumption and environmental impact.
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 effectively prevents impurities and dross from entering the lead strip, resulting in higher-quality grid wires with reduced defects, which enhances battery performance and extends its useful life.
Implementation Method 1
an electromagnetic stirrer (4) below the filtration device (3), configured to generate an electromagnetic field to stir the molten metal
Implementation Method 2
a casting mold (5) below the electromagnetic stirrer (4), configured to receive the molten metal from the electromagnetic stirrer (4) and solidify the molten metal into a metal strip through heat conduction
Data Source
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AI summary
In one embodiment, a lead strip caster for battery grids includes a nozzle, a pair of rollers, and a molten lead supply to the nozzle. The lead strip caster produces a continuous lead strip for making battery grids. The nozzle has at least one passage that communicates with generally opposed faces of the nozzle at least partially received between the rollers to supply molten lead to exterior surfaces of the co-rotating rollers to form a continuous solid strip of lead from which battery grids may be made.