Modular EB Gun Assembly for Interchangeable Melt Furnace Lids
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Solution Overview
Problem
Electron beam furnaces experience significant downtime for cleaning and refurbishing the chamber and lid between melting campaigns, which reduces efficiency and increases costs.
Innovation Solution
An electron beam gun assembly with a skeleton frame and movable nozzle configuration allows for easy mounting and alignment on interchangeable chamber lids, enabling continuous operation while one chamber is cleaned or refurbished, and reducing changeover time by allowing simultaneous melting in another chamber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the chamber and lid are cleaned and refurbished between melting campaigns, then the equipment reliability and product quality are improved, but the production downtime increases
Solution Approach 1:
The system is divided into multiple independent chambers (first EB chamber and second EB chamber) with interchangeable lids. While one chamber is undergoing cleaning and refurbishment, another chamber can continue production, thereby segmenting the maintenance process from the production process and eliminating downtime.
Solution Approach 2:
The EB gun assembly is pre-mounted on the chamber lid before the lid is attached to the chamber. This preliminary assembly allows for quick installation and removal of the entire lid assembly, enabling rapid chamber replacement for maintenance without disassembling the EB gun from the lid, thus reducing maintenance time.
2Manufacturing precision
If the EB gun is rigidly mounted to the chamber lid, then the alignment precision and melting efficiency are improved, but the adaptability to different chambers decreases
Solution Approach 1:
The EB gun assembly is designed with a universal mounting structure that can be attached to any chamber lid through standardized flanges and alignment features. The skeleton frame with adjustable arms and alignment pins allows the same EB gun assembly to be precisely mounted on different chambers (first EB chamber, second EB chamber) without custom fabrication, achieving both precision and universality.
Solution Approach 2:
The mounting structure incorporates adjustable elements (arms, alignment pins, flanges) that can be positioned and secured to accommodate different chamber configurations. This dynamic adjustability allows the EB gun to maintain precise alignment while adapting to various chamber lids, balancing rigidity for precision with flexibility for adaptability.
3Productivity
If multiple chambers are used with interchangeable lids, then the productivity is improved through continuous operation, but the device complexity increases
Solution Approach 1:
The system uses multiple independent chambers with identical standardized interfaces, allowing one chamber to be maintained while another produces. This segmentation of production capacity enables continuous operation without requiring a completely redundant complex system, as each chamber is a simplified independent unit.
Solution Approach 2:
The standardized chamber lid design with universal EB gun mounting features allows the same lid and EB gun assembly to serve multiple chambers. This universality reduces overall system complexity by using repeated standardized components rather than unique custom-designed systems for each chamber, making the multi-chamber system manageable despite increased productivity capacity.
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
This solution reduces downtime by at least 20 hours during commercial ingot production, enhances productivity, and extends equipment life by minimizing furnace by-products and facilitating maintenance, thereby improving operational efficiency and safety.
Implementation Method 1
An electron beam (EB) furnace uses one or more electron beams to melt material
Implementation Method 2
electron beam(s) generated by the EB gun(s) propagate through the apertures and melt material contained in the chamber
Data Source
AI summary
An electron beam (EB) gun assembly for an EB furnace is provided. The EB gun assembly includes an EB gun-frame assembly including a skeleton frame and at least one EB gun mounted to the skeleton frame, and the EB gun-frame assembly is configured to rigidly mount onto a first EB chamber lid and melt material in a first EB chamber and be removed and rigidly mount onto a second EB chamber lid and melt material in a second EB chamber. In some forms, the EB gun assembly includes at least one mounting frame and the at least one EB gun is mounted to the at least one mounting frame and the at least one mounting frame is mounted to the skeleton frame.