Micro-Textured Sulfurized Cladding for Anti-Wear Substrates
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Solution Overview
Problem
Existing sulfurization technologies face challenges in achieving effective anti-friction and anti-wear properties due to the difficulty of sulfur atoms diffusing into metals, resulting in thin sulfurized layers that are prone to wear.
Innovation Solution
A method involving the sequential application of alloy powder cladding, micro-texturing, and ion sulfurization to form a micro-textured and ion-sulfurized cladding layer on the substrate, enhancing anti-friction and anti-wear properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ion sulfurization is performed on metal substrate, then anti-friction effect is improved, but sulfurized layer thickness is limited due to slow sulfur diffusion
Solution Approach 1:
Alloy powder cladding is performed before sulfurization to pre-introduce sulfur-containing elements (Mo, Ni, etc.) into the cladding layer. This preliminary action ensures sufficient sulfur source availability during subsequent sulfurization, enabling formation of thicker and more durable sulfurized layers while maintaining low friction coefficients
Solution Approach 2:
The invention creates a composite structure consisting of metal substrate + alloy cladding layer + sulfurized layer. The alloy cladding layer containing sulfur-generating elements (Mo, Ni, etc.) serves as an intermediate layer that facilitates sulfur diffusion and forms a composite material system with improved anti-friction and anti-wear properties
2Ease of manufacture
If sulfurized layer is made thinner to reduce material consumption, then manufacturing cost is reduced, but wear resistance deteriorates
Solution Approach 1:
The alloy cladding layer is applied locally on the substrate surface before sulfurization, concentrating sulfur-containing elements where needed. This local quality enhancement ensures sufficient sulfur source at the friction surface, enabling formation of durable sulfurized layers without excessive material consumption across the entire component
Solution Approach 2:
The invention changes the compositional parameters of the cladding layer by introducing alloy powder with specific sulfur-generating elements (Mo, Ni, etc.). This parameter change enables more efficient sulfur diffusion and sulfurized layer formation, achieving better wear resistance with optimized material usage
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 method significantly improves the anti-friction and anti-wear properties of the substrate by creating a composite solid lubricating film layer with a low friction coefficient and extended service life, leveraging the synergistic effects of micro-texturing and ion sulfurization.
Implementation Method 1
laser cladding parameters: laser power from 1500 to 5000 W
Implementation Method 2
cladding is selected from laser cladding
Implementation Method 3
micro-texturing is performed on surface of cladding layer to form texture pattern
Implementation Method 4
sulfurization treatment adopts ion sulfurization method
Implementation Method 5
large radius of sulfur atoms makes it difficult to diffuse in the metal
Data Source
AI summary
The present invention discloses a method for improving the anti-friction and anti-wear properties of substrate, and relates to the technical field of friction and wear. The method of present invention is to firstly clad alloy powder on the surface of substrate to form the cladding layer, and then perform the texturing and sulfurization treatment in sequence on the cladding layer to form a textured and ion-sulfurized cladding layer with anti-friction and anti-wear properties on the surface of substrate, so as to improve anti-friction and anti-wear properties of the substrate, and to increase efficiency as well as service life of the substrate.