Strip Sheet Cooling Roller Layout for Uniform High-Speed Heat Treatment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing heat treatment processes for strip-shaped sheets face inefficiencies in continuous processing due to inadequate cooling and temperature variations during high-speed transfer.
Innovation Solution
A heat treatment apparatus with a heating unit and a cooling unit that includes cooling rollers allowing refrigerant flow, along with a controlled atmosphere system, ensures efficient cooling and uniform thermal history by using multiple cooling rollers and controlled vacuum environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the transfer speed of the strip-shaped sheet is increased to improve processing efficiency, then productivity increases, but temperature variations and thermal deformation worsen
Solution Approach 1:
The cooling system is segmented into multiple cooling rollers (first cooling roller and second cooling roller) that independently cool different surfaces of the sheet. This segmentation allows for better temperature control across the sheet width, reducing thermal variations even at high transfer speeds.
Solution Approach 2:
Different cooling conditions are applied to different locations of the sheet. The first cooling roller cools the first surface while the second cooling roller cools the second surface, allowing localized temperature control to maintain uniformity across the entire sheet during high-speed processing.
2Device complexity
If a single cooling roller is used to simplify the device structure, then device complexity decreases, but cooling effectiveness and temperature uniformity worsen
Solution Approach 1:
The cooling function is divided between two cooling rollers, each responsible for cooling one surface of the sheet. This segmentation enables better temperature uniformity by addressing both surfaces simultaneously, outweighing the increased structural complexity.
Solution Approach 2:
Each cooling roller serves multiple functions: cooling the respective sheet surface, supporting the sheet during transfer, and maintaining positional stability. This multi-functionality justifies the use of multiple rollers despite increased device complexity.
3Manufacturing precision
If multiple cooling rollers are provided to improve cooling effectiveness, then temperature uniformity improves, but device complexity increases
Solution Approach 1:
Each cooling roller is optimized for its specific location and function, with the first cooling roller positioned for optimal contact with the first surface and the second cooling roller positioned for the second surface. This localized optimization achieves temperature uniformity while keeping each individual roller relatively simple.
Solution Approach 2:
The multiple cooling rollers operate simultaneously and continuously along the sheet transfer path, providing uninterrupted cooling action. This continuous cooling maintains temperature uniformity throughout the process, justifying the increased device complexity through sustained operational effectiveness.
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 apparatus achieves improved processing efficiency and reduced thermal variations, ensuring high-quality sheet production even at increased transfer speeds by effectively cooling the sheet before winding, thereby minimizing deformation and temperature-related issues.
Implementation Method 1
a cooling roller (52) that allows a refrigerant to flow through the inside
Implementation Method 2
a second heater disposed near an intermediate position between guide rollers adjacent to each other along the conveying direction of the treatment object. The second heater is a heater that emits electromagnetic waves in the infrared region
Data Source
AI summary
According to the present disclosure, a heat treatment apparatus includes a heating treatment unit that heat-treats a strip-shaped sheet while transferring the strip-shaped sheet, and a cooling unit that cools the strip-shaped sheet having been heat-treated in the heating treatment unit while transferring the strip-shaped sheet. The cooling unit includes a cooling roller that allows a refrigerant to flow through the inside thereof, and an outer wall that surrounds the space in which the cooling roller is disposed. The heat treatment apparatus may further include a take-up unit in which the strip-shaped sheet having been cooled in the cooling unit is wound.