Metal Additive Manufacturing Parameter Analysis for Laser Hatch Quality
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Solution Overview
Problem
Conventional metal additive manufacturing faces challenges in determining suitable manufacturing parameters due to complex physical coupling effects during laser melting, leading to inefficient and costly trial-and-error processes, especially when dealing with new materials or equipment.
Innovation Solution
A parameter analysis method and system that simulate multi-track melting results using laser parameters to generate a melting model, calculate position divergences, and determine surface average curvature, allowing for the optimization of laser hatch settings to ensure product quality by setting curvature thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If trial-and-error experiments are conducted to determine suitable manufacturing parameters, then manufacturing precision can be improved, but productivity deteriorates due to repetitive testing
Solution Approach 1:
The patent establishes a powder bed model and simulates multi-track melting results before actual manufacturing to predict surface quality. By performing preliminary simulation and analysis of melting models, the system determines optimal laser parameters in advance, avoiding repetitive trial-and-error experiments and improving manufacturing efficiency while maintaining product quality
2Productivity
If simulation and analysis methods are implemented to optimize laser parameters, then productivity is improved by reducing experiments, but device complexity increases
Solution Approach 1:
The patent creates a virtual powder bed model that replicates the physical powder bed's melting behavior under laser irradiation. By simulating multi-track melting results and analyzing melting models in a virtual environment, the system predicts surface quality without requiring physical experiments, thus improving productivity while the complexity is confined to the simulation software rather than physical equipment
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
Enables efficient analysis of laser parameters to ensure metal additive manufacturing meets quality standards, reducing the need for repetitive experiments and improving manufacturing efficiency with new materials or processes.
Implementation Method 1
when metal powder is subjected to laser, the melting behavior of the metal powder involves multiple complicated physical coupling effects
Implementation Method 2
the melting behavior of the metal powder involves multiple complicated physical coupling effects
Implementation Method 3
analyzing the melting model to calculate a plurality of position divergences of a plurality of melting powders of the melting model
Implementation Method 4
analyzing the plurality of melting surface powders to calculate a surface average curvature of the melting model
Data Source
AI summary
A parameter analysis method and a parameter analysis system for metal additive manufacturing are provided. The parameter analysis method includes: establishing a powder bed model; simulating a multi-track melting result of the powder bed model according to a plurality of laser parameters to generate a melting model; analyzing the melting model to calculate a plurality of position divergences of a plurality of melting powders of the melting model, and defining a plurality of melting surface powders according to the position divergences; analyzing the melting surface powders to calculate a surface average curvature of the melting model; and determining a laser hatch in the laser parameters allows metal additive manufacturing to meet a quality as needed according to whether the surface average curvature is between a first curvature threshold and a second curvature threshold, the first curvature threshold being smaller than the second curvature threshold.