Quartz Vial Fabrication Through Neck Shaving and Thermal Fusion
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Solution Overview
Problem
Conventional methods struggle to mass-produce quartz vials with precise shapes for long-term storage of chemical agents due to the high softening temperature of quartz glass, making it difficult to replicate the outer peripheral surface of hard glass vials at reduced costs.
Innovation Solution
A fabricating method involving shaving, cutting, and polishing quartz glass to form the outer peripheral surface of the neck, followed by thermal fusion to join the body and neck, allowing for precise shape formation and mass-production of quartz vials with excellent sealing capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the conventional roller pressing method is used to form the outer peripheral surface of the neck, then the manufacturing process is simple and efficient, but the manufacturing precision is insufficient due to the high softening temperature of quartz glass
Solution Approach 1:
The patent changes the fundamental forming parameter from thermal softening (roller pressing) to mechanical removal (shaving). By using shaving processes including grinding, cutting, and polishing, the method achieves precise shaping of the outer peripheral surface without relying on the softening of quartz glass, thereby resolving the contradiction between precision and ease of manufacture.
2Reliability
If quartz glass is used as the material, then the chemical purity and long-term storage capability are improved, but the manufacturing cost and complexity increase due to the high softening temperature
Solution Approach 1:
The patent fundamentally changes the fabrication approach from thermal processing to mechanical processing. By using shaving methods (grinding, cutting, polishing) instead of roller pressing that relies on softening, the process becomes more suitable for quartz glass despite its high softening temperature, thereby maintaining reliability while reducing fabrication complexity.
Solution Approach 2:
The patent segments the fabrication process into distinct sequential steps: preparing the quartz glass member, shaving the outer peripheral surface to form the neck, and joining the body. This segmentation allows each step to be optimized independently, making the overall process more manageable and less complex while maintaining high precision requirements for the neck portion.
3Manufacturing precision
If the roller pressing method is used for mass production, then the productivity is high, but the manufacturing precision deteriorates because quartz glass cannot be easily shaped at reduced costs
Solution Approach 1:
The patent changes the forming mechanism from plastic deformation under heat and pressure to controlled material removal. The shaving process including grinding, cutting, and polishing enables precise shaping that can be applied to quartz glass, and when integrated into automated production lines, maintains high productivity while achieving the required manufacturing precision.
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
Enables the mass-production of quartz vials with predetermined shapes, ensuring long-term storage and secure sealing for chemical agents, overcoming the challenges of quartz glass's high softening temperature.
Implementation Method 1
quartz glass has a softening temperature higher than that of borosilicate glass
Implementation Method 2
joining by thermal fusion, to the neck, the body that is separately fabricated
Data Source
AI summary
A fabricating method for a quartz vial having a body for containing a substance, a bottom closing a lower end of the body, a cylindrical neck disposed above the body, and a cylindrical mouth disposed above the neck and having an outer diameter larger than that of the neck includes the steps of forming an outer peripheral surface of the neck by shaving, and joining by thermal fusion, to the neck, the body that is separately fabricated. Thus, quartz vials having a predetermined shape can be mass-fabricated.