Titanium Vacuum-Insulated Container Surface Texturing After Sealing
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Solution Overview
Problem
Existing methods for producing vacuum-insulated double containers lack the ability to create unique, high-quality designs with titanium materials that provide both efficient insulation and a contoured feel, resulting in containers that are not distinctively different from one another.
Innovation Solution
A method involving the recrystallization of titanium external and internal cylinders, followed by degassing and vacuum sealing, and the creation of concavoconvex portions on the surface of the containers, which are then cooled with nitrogen gas to induce specific texture patterns, allowing for the production of containers with a ceramic-like design and unique features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If titanium materials are used for vacuum-insulated double containers, then insulation efficiency and durability are improved, but the surface texture is smooth and lacks unique design characteristics
Solution Approach 1:
The patent applies heat treatment parameters (heating to 700-900°C followed by rapid cooling) to change the physical state of titanium, inducing recrystallization that transforms the smooth surface into a contoured texture with convex and concave portions, thereby maintaining insulation efficiency while achieving unique surface design
Solution Approach 2:
The patent utilizes the phase transition of titanium during heat treatment, where heating to specific temperatures causes recrystallization and phase changes in the metal structure, resulting in permanent surface texture modifications that create contoured patterns without compromising the material's insulation properties
2Ease of manufacture
If conventional production methods are used, then manufacturing simplicity is maintained, but all containers appear identical without unique features
Solution Approach 1:
The patent employs a self-service approach where the titanium material itself generates the unique contoured texture through controlled recrystallization during heat treatment, eliminating the need for additional surface treatment equipment or complex manufacturing steps while achieving distinctive design features
Solution Approach 2:
The patent performs preliminary heat treatment and recrystallization during the manufacturing process itself, preparing the unique surface texture before final assembly, which integrates design creation into the production flow without requiring separate post-processing steps
3Shape
If heat treatment is applied to induce recrystallization, then contoured surface texture is created, but additional process steps and equipment are required
Solution Approach 1:
The patent makes the vacuum heating furnace serve multiple functions: it performs both the vacuum heating for insulation and the heat treatment for recrystallization in a single device, eliminating the need for separate heat treatment equipment and reducing overall system complexity despite adding functional capabilities
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 method enables the creation of high-quality, uniquely designed titanium vacuum-insulated double containers with a contoured feel, ensuring each container is distinct, while maintaining efficient insulation and production efficiency.
Implementation Method 1
the recrystallization includes heating the workpiece (3) in the vacuum heating furnace (6) and then rapidly cooling the workpiece in an atmospheric-pressure environment
Implementation Method 2
the rapid cooling is a process including cooling the workpiece to normal temperature with nitrogen gas at a point in time at which the temperature inside the vacuum heating furnace (6) is about 700° C. or less
Implementation Method 3
degassing the space section S of a workpiece (3) that includes the external cylinder (1) and the internal cylinder (2), and vacuum sealing a degassing hole
Data Source
AI summary
The present invention is aimed at providing a method for producing a vacuum-insulated double container that exhibits a remarkable and heretofore unobtainable operating effect. The invention provides a method for producing a vacuum-insulated double container by placing a titanium internal cylinder (2) into a titanium external cylinder (1) via a space section (S), and using the space section (S) between the external cylinder (1) and the internal cylinder (2) as a vacuum-insulating space section, the method comprising the steps of degassing the space section (S) of a workpiece (3) that includes the external cylinder (1) and the internal cylinder (2), and vacuum sealing a degassing hole while the workpiece (3) is heated in a vacuum heating furnace (6); and then providing concavoconvex portions (4, 5) to a surface of the recrystallized external cylinder (1) and the internal cylinder (2) by placing the workpiece (3) in an atmospheric-pressure environment.