Honeycomb Structured Body Plug Drying Method
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing methods for manufacturing honeycomb structured bodies often result in recesses (shrinkage) in the plug material layer due to shrinkage during the degreasing and firing processes, which cannot be effectively prevented by existing drying methods.
Innovation Solution
A method involving the use of hot air to dry the plug material paste layer on both end faces of the honeycomb molded body, with wind speeds between 10 to 30 m/s and temperatures between 130 to 210°C for 2 to 7 minutes, to prevent shrinkage and ensure a sealed plug material layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the whole honeycomb molded body is dried using conventional drying methods, then the drying process is simple, but recesses (shrinkage) form in the plug material paste layer
Solution Approach 1:
The invention segments the drying process into two distinct stages: first drying the plug material paste layer specifically, then drying the entire honeycomb molded body. This segmentation allows the plug material layer to be dried under controlled conditions (hot air blowing at 10-30m/s) to prevent shrinkage, while maintaining overall process simplicity.
Solution Approach 2:
The invention performs preliminary drying of the plug material paste layer before the main drying process of the entire honeycomb molded body. By pre-drying the plug material layer with hot air blowing, the paste achieves sufficient dryness to resist shrinkage during subsequent degreasing and firing processes, while the overall manufacturing flow remains efficient.
2Manufacturing precision
If hot air blowing is used to dry the plug material paste layer, then recesses (shrinkage) are prevented, but the device complexity increases
Solution Approach 1:
The invention uses pneumatic principles by blowing hot air through nozzles at controlled speeds (10-30m/s) to dry the plug material paste layer. This pneumatic approach provides efficient and controllable drying action that prevents shrinkage, while the apparatus remains relatively simple using standard air blowing equipment.
Solution Approach 2:
The invention controls the drying process by adjusting parameters such as hot air temperature (130-210°C) and wind speed (10-30m/s). By optimizing these parameters, the plug material layer dries uniformly without shrinkage, achieving high manufacturing precision with a straightforward hot air blowing system.
3Productivity
If the plug material paste layer is not dried sufficiently, then the manufacturing process is fast, but shrinkage occurs during degreasing and firing
Solution Approach 1:
The invention performs preliminary drying of the plug material paste layer before the main drying and firing processes. This pre-drying action ensures the paste reaches a sufficient dryness level quickly, preventing shrinkage during degreasing and firing while maintaining overall manufacturing efficiency.
Solution Approach 2:
The invention uses high-speed hot air blowing (10-30m/s) to rapidly dry the plug material paste layer in a short time period. This rushing through the drying stage efficiently removes moisture, preventing subsequent shrinkage without significantly extending the manufacturing cycle.
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 approach effectively dries the plug material paste layer, reducing fluidity and preventing recesses or shrinkage, ensuring a sealed and desired shape for the plug material layer, thereby improving the manufacturing process of honeycomb structured bodies.
Implementation Method 1
a plug material paste drying process to dry the plug material paste is conducted by blowing hot air to the end faces of the honeycomb molded body using a hot air apparatus
Implementation Method 2
blowing hot air to both end faces of the honeycomb molded body... to conduct superior drying of the surface of the plug material paste
Data Source
Figure 1(a)~1(b)
Figure 2-1(a)~2-1(b)
Figure 2-2(a)~2-2(b)
AI summary
It is an object of the present invention to provide a method for manufacturing a honeycomb molded body that has the either one of the end portions of each of the cells assuredly sealed with a plug material layer of a desired shape. The method for manufacturing a honeycomb structured body of the present invention is configured to manufacture a honeycomb structured body comprising a honeycomb fired body manufactured by molding ceramic raw material to form a pillar-shaped honeycomb molded body having a multiplicity of cells disposed in parallel with one another in the longitudinal direction with a cell wall therebetween, and filling in either one of the end portions of the cells with a plug material paste, and firing this honeycomb molded body, wherein, after having filled in either one of the end portions of each of the cells of the honeycomb molded body with the plug material paste, a plug material paste drying process configured to dry the plug material paste by blowing hot air to the end faces of the honeycomb molded body is conducted.