Laser metal deposition primary dendrite spacing prediction method and system

Abstract

The present invention provides a method and system for predicting primary dendrite spacing in laser metal deposition, wherein the prediction method includes: collecting laser characteristic data during laser metal deposition, the laser characteristic data including laser power and laser scanning speed; The feature data is input into the spacing prediction model, and the primary dendrite spacing prediction result is output; wherein, the spacing prediction model is obtained after training based on laser characteristic sample data and a predetermined primary dendrite spacing label. In the present invention, the primary dendrite spacing prediction data can be obtained by inputting the laser power and laser scanning speed into the spacing prediction model. The spacing prediction model is obtained after training based on the laser characteristic sample data and the predetermined primary dendrite spacing label. The invention provides The method has high precision and good timeliness, which is conducive to realizing real-time control of microstructure in industrial applications.

Description

technical field [0001] The invention relates to the field of metal processing, in particular to a method and system for predicting primary dendrite spacing in laser metal deposition. Background technique [0002] Laser metal deposition technology is an advanced manufacturing technology developed in recent years. Based on the principle of "layered manufacturing and discrete stacking", this technology can directly and rapidly form parts of any shape and size, effectively reducing the processing cost and production cycle of parts. During the laser metal deposition process, high-quality repair and manufacture of single crystal / directionally solidified nickel-based superalloy parts can be achieved through the regulation of the laser metal deposition process. [0003] The optimization and control of process parameters is still a difficult problem in the industrial application of laser metal deposition, especially for single crystal / directionally solidified nickel-based superalloy...

AI Technical Summary

Problems solved by technology

Its disadvantage is that due to the analytical calculation or finite element simulation involved, this combined model takes too long and is not suitable for the next possible industrial real-time control of the organization.

In addition, both analytical calculation and finite element simulation have the problem of low precision, which cannot fully achieve the purpose of precise tissue prediction

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