Honeycomb Structure Slit Formation and Bonding Method
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Solution Overview
Problem
Conventional methods for producing honeycomb structures with slits to improve thermal shock resistance often result in shape deterioration due to joining deviations, leading to decreased canning properties and strength.
Innovation Solution
A method involving a first step of forming slits in a honeycomb structure, filling them with a joining material, and then removing part of the outer or partition walls to suppress joining deviations, ensuring accurate alignment and bonding without shape deterioration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the honeycomb structure is divided into two parts and bonded together with joining material, then the thermal shock resistance is improved, but the shape deteriorates due to joining deviation
Solution Approach 1:
The honeycomb structure is divided into multiple parts along the slit, allowing each part to be bonded together with joining material. This segmentation enables the structure to expand and contract independently during thermal cycles, improving thermal shock resistance while maintaining shape accuracy through controlled bonding at specific locations.
Solution Approach 2:
The slit is formed in advance in the honeycomb structure before bonding operations. This preliminary action creates a predetermined separation that allows for controlled expansion and contraction during thermal cycles, while the subsequent bonding at specific locations ensures shape accuracy is maintained despite the division.
2Reliability
If the honeycomb structure is divided into two parts and bonded together, then the thermal shock resistance is improved, but the strength decreases due to joining deviation
Solution Approach 1:
The honeycomb structure is segmented along the slit into multiple parts that can move independently during thermal cycles. This segmentation improves thermal shock resistance by allowing differential expansion, while the bonding at specific locations maintains structural strength by creating controlled joints rather than complete separations.
Solution Approach 2:
The bonding is applied locally at specific locations along the slit rather than throughout the entire structure. This local bonding approach maintains strength at critical locations while allowing other areas to expand and contract freely during thermal cycles, thus improving thermal shock resistance without compromising overall structural strength.
Data Source
AI summary
A method for producing a honeycomb structure 1 having a slit 12 includes: a first step of preparing a honeycomb structure 1 being free from slit, and forming the slit 12 leaving at least a part of the outer peripheral wall 10 or the partition wall 11; after the first step, a second step of filling the slit 12 with a joining material 13; and after the second step, a third step of removing at least a part of the outer peripheral wall 10 or the partition wall 11 left in the first step to obtain the honeycomb structure 1 having the slit 12 that divides the honeycomb structure 1.