Floating Seal Ring Wear Layer for Flatness and Long Life
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Solution Overview
Problem
Conventional floating seal rings suffer from wear and tear, leading to oil leakage due to insufficient elasticity and wear of working surfaces, resulting in reduced sealing performance and shorter working life, with existing machining methods facing challenges in achieving flatness and wear resistance.
Innovation Solution
A super wear-resistant floating seal ring design featuring a C-shaped groove filled with a mixed powder wear-resistant material layer, including chromium-molybdenum alloy, tungsten carbide alloy, and ceramic sand, welded using laser or plasma arc welding, with a slope protection structure and pressing notch, and a machining method using fan-shaped support plates to ensure flatness and smoothness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the working surface of the floating seal ring is made more wear-resistant by using harder materials or coatings, then the working life and sealing performance are improved, but the machining difficulty and processing costs increase significantly
Solution Approach 1:
The patent applies local quality by creating a C-shaped groove on the working surface and filling it with wear-resistant material only where needed. This localized treatment provides enhanced wear resistance at the critical contact area without requiring the entire ring to be made of difficult-to-machine hard materials, thus resolving the contradiction between sealing performance and machining ease.
Solution Approach 2:
The patent uses composite materials by combining the base ring material with a wear-resistant material layer deposited in the C-shaped groove. This composite structure provides the dual benefit of ease of manufacturing the base structure and superior wear resistance at the working surface, directly addressing the technical contradiction.
2Ease of manufacture
If conventional machining methods are used to achieve flatness and smoothness of the working surface, then the machining process is simple, but plane warping occurs during grinding reducing quality
Solution Approach 1:
The patent applies preliminary action by pre-forming the C-shaped groove and filling it with wear-resistant material before the final grinding operation. This preparatory step creates a more stable structure that resists warping during subsequent machining, allowing conventional grinding methods to achieve the required flatness without the plane warping issues that plague conventional approaches.
3Duration of action of moving object
If the rubber ring elasticity is increased to compensate for wear, then the sealing performance is maintained for longer, but the rubber ring cannot sufficiently compensate for wear of the working surfaces
Solution Approach 1:
The patent applies segmentation by separating the sealing function into two distinct components: the rubber ring for initial sealing and the wear-resistant material layer in the C-shaped groove for long-term wear compensation. This division allows each component to perform its specialized function optimally, with the wear-resistant layer providing sustained protection that extends working life beyond what rubber elasticity alone can achieve.
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 solution enhances wear resistance and extends the working life of the seal ring while simplifying machining, reducing material costs, and improving quality, with the wear-resistant layer providing superior protection against axial and radial impacts, and reducing processing difficulties and costs.
Implementation Method 1
The wear-resistant material layer adopts a mixed powder composed of chromium-molybdenum alloy powder, tungsten carbide alloy powder, and ceramic sand powder, which is welded into the C-shaped groove by laser or plasma arc welding.
Implementation Method 2
The wear-resistant material layer adopts a mixed powder composed of chromium-molybdenum alloy powder, tungsten carbide alloy powder, and ceramic sand powder, which is welded into the C-shaped groove by laser or plasma arc welding.
Data Source
AI summary
A super wear-resistant floating seal ring includes: a ring body, wherein a working surface of the ring body has a C-shaped groove; the C-shaped groove is filled with a wear-resistant material layer to form a super wear-resistant core ring; a slope protection structure is provided on both sides of the C-shaped groove, and a slope surface is provided under the slope protection structure of the ring body; a pressing notch is formed on the slope surface; and an insertion hole, which is corresponding to the pressing notch, is drilled on an internal diameter of the ring body. A machining method therefor includes steps of: preparing the ring body of the floating seal ring; forming the C-shaped groove on the ring body; forming the wear-resistant material layer; forming the pressing notch and the insertion hole, and installing the floating seal ring; and grinding the wear-resistant material layer.