Thermally Coated Component Friction-Optimized Runway Surface
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Solution Overview
Problem
Existing thermally coated components with friction-optimized surfaces for friction partners lack reproducibility and predictability in oil holding volume, leading to inconsistent running properties.
Innovation Solution
A thermally coated component with a friction-optimized surface featuring a predetermined oil holding volume of 10 to 800 μm³/mm², achieved through mechanical machining methods like honing and thermal spray coatings, and a simulation method to evaluate and optimize surface structures for precise oil retention and friction reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If mechanical surface treatment is applied to introduce oil-retaining structures, then friction is reduced, but manufacturing precision and reproducibility of oil holding volume deteriorate
Solution Approach 1:
The invention changes the parameter of oil holding volume from an uncontrolled byproduct of machining to a predetermined design parameter. By specifying target oil holding volumes (10-800 μm³/mm²) and using simulation to predict actual values before machining, the process transforms from trial-and-error to precision manufacturing, resolving the contradiction between friction reduction and manufacturing precision.
Solution Approach 2:
The invention performs preliminary simulation of the machining process to predict the oil holding volume before actual manufacturing. This preliminary digital twin approach allows optimization of machining parameters to achieve the desired oil holding volume, ensuring reproducibility while maintaining friction reduction benefits.
2Adaptability or versatility
If thermal spray coating is applied to the surface, then surface properties are modified, but the interaction with friction partner becomes unpredictable
Solution Approach 1:
The invention implements a feedback loop where simulation predicts the oil holding volume of the thermal spray coating, compares it with the target value, and provides guidance for adjusting coating parameters. This closed-loop approach ensures that surface modification through thermal spray maintains predictable and reliable running properties while achieving desired adaptability.
Solution Approach 2:
The invention replaces physical trial-and-error machining and coating processes with a digital simulation system. The virtual model predicts coating behavior and oil holding volume, substituting mechanical experimentation with computational analysis, thereby ensuring reliability while maintaining adaptability.
3Object-affected harmful factors
If complex machining methods like laser honing are used, then oil-retaining microstructures are created, but device complexity and manufacturing cost increase
Solution Approach 1:
The invention creates a digital copy (simulation model) of the machining process and component geometry to predict oil holding volume. This virtual replica allows optimization of simple machining parameters to achieve complex oil-retaining structures, avoiding the need for complex laser honing equipment while maintaining friction reduction 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 solution provides reproducible and predeterminable oil holding volumes, enhancing the running properties of friction partners by optimizing the interaction between components, such as cylinders and pistons, through precise simulation and surface treatment techniques.
Implementation Method 1
which are thermal spray coatings, in particular coatings obtained by arc wire spraying or by the PTWA spraying process (Phase Transfer Wire Arc Spray Coating)
Implementation Method 2
Machining methods such as honing, in particular laser honing and spiral slide honing, can be used as treatment methods
Data Source
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AI summary
The present invention provides a thermally coated component that has a frictionally optimized surface of a raceway for a frictional counterpart. The frictionally optimized surface has a theoretical oil-retaining volume Voil of 10 to 800 µm3/mm2 that can be predetermined by a simulation of the component coating surface. Also disclosed is a method for the simulation of the component coating surface of a thermally coated component which comprises the determination of characteristic variables for surface structures of the component coating surface, wherein a characteristic variable simulates a function between the component coating surface and the frictional counterpart.