Surface Roughness Reduction via Blasting and Electron Beam
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Solution Overview
Problem
Existing surface treatment methods using electron beam irradiation alone are inefficient in smoothing workpieces with high surface roughness, such as sintered and additively manufactured products, as they do not effectively reduce surface roughness.
Innovation Solution
A method that combines blasting with electron beam irradiation, where blasting is performed to physically alter the surface state, making it more susceptible to electron beam smoothing, thereby increasing the reduction rate of surface roughness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only electron beam irradiation is performed on a workpiece with high surface roughness, then the surface treatment process is simple, but the reduction rate of surface roughness is insufficient
Solution Approach 1:
Blasting is performed as a preliminary treatment before electron beam irradiation to modify the surface state of the workpiece. This preliminary action creates surface conditions that enhance the effectiveness of the subsequent electron beam irradiation, enabling significant roughness reduction that would not be achievable by electron beam irradiation alone.
Solution Approach 2:
The surface state parameters of the workpiece are changed through blasting treatment, altering the surface morphology and properties. This parameter change makes the surface more responsive to electron beam irradiation, transforming the surface from a state resistant to melting into a state that easily melts and smooths under electron beam exposure.
2Manufacturing precision
If blasting is performed before electron beam irradiation, then the reduction rate of surface roughness increases significantly, but the treatment process becomes more complex
Solution Approach 1:
Two different surface treatment methods—blasting and electron beam irradiation—are merged into a sequential combined process. The blasting apparatus and electron beam irradiation apparatus are integrated or coordinated to treat the workpiece in sequence, achieving synergistic effects where the combination produces significantly better roughness reduction than either method alone.
3Manufacturing precision
If blasting is performed to control surface state for easy melting, then the surface becomes more susceptible to electron beam smoothing, but additional equipment and process steps are required
Solution Approach 1:
Blasting is performed as a preliminary treatment before electron beam irradiation to modify the surface state of the workpiece. This preliminary action creates surface conditions that enhance the effectiveness of the subsequent electron beam irradiation, enabling significant roughness reduction that would not be achievable by electron beam irradiation alone.
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 combined method significantly enhances the reduction rate of surface roughness, efficiently smoothing workpieces by controlling the surface state to easily melt under electron beam irradiation, reducing surface roughness by 20% or more compared to electron beam irradiation alone.
Implementation Method 1
it is considered that the surface of a workpiece is smoothed by the melting of the surface of the workpiece
Implementation Method 2
performing blasting on a surface of the workpiece
Data Source
AI summary
A method for surface treatment includes performing blasting on a surface of a workpiece, and irradiating the blasted surface of the workpiece with electron beam.