Ceramic-Tip Clamping Jig for Acid-Resistant Substrate Cleaning
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Solution Overview
Problem
Conventional clamping jigs used in cleaning devices, made of polyether ether ketone (PEEK) resin, exhibit poor acid resistance, leading to rapid deterioration when exposed to cleaning solutions like sulfuric acid or phosphoric acid, limiting their continuous use.
Innovation Solution
A clamping jig with a ceramic tip portion containing silicon carbide or aluminum oxide as the main component, which provides excellent acid resistance and extends the device's operational lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the claw portion is made of plastic such as PEEK resin, then the clamping jig can be easily manufactured and operated, but the acid resistance deteriorates significantly leading to short service life
Solution Approach 1:
The invention uses a composite structure where the claw portion comprises a metal base material (providing structural strength and acid resistance) covered with a plastic coating layer (providing ease of manufacture and operational properties). This composite approach combines the advantages of both materials while mitigating their individual disadvantages.
Solution Approach 2:
The plastic coating is applied selectively to specific regions of the claw portion where contact with the substrate occurs, while the metal base material remains exposed in areas requiring high acid resistance. This localized application optimizes both ease of operation and acid resistance in different functional zones.
2Ease of operation
If the claw portion is made of plastic such as PEEK resin, then the clamping jig can be easily operated, but the service life decreases due to rapid deterioration in acid environments
Solution Approach 1:
The composite structure of metal base material with plastic coating provides both the ease of operation characteristic of plastic and the long service life characteristic of metal in acid environments.
Solution Approach 2:
The plastic coating layer acts as a sacrificial protective layer that can be replaced or renewed, allowing the expensive metal base material to be protected and reused for extended periods, effectively extending service life while maintaining ease of operation.
Data Source
AI summary
A clamping jig according to the present disclosure includes a supporting portion extending in a vertical direction, and a bent portion connected to a top side of the supporting portion and configured to come into contact with an outer peripheral portion of a substrate. The bent portion includes a base end portion located on a side of the supporting portion and a tip portion connected to the base end portion. At least the tip portion contains a ceramic containing silicon carbide or aluminum oxide as a main component.