The laser additive process detection system escorts the forming quality of metal 3D printing parts



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In the context of intelligent manufacturing, the demand for technological innovation and cost reduction in the manufacturing industry is becoming more and more obvious, and the metal 3D printing technology represented by laser selection melting technology provides a new impetus for the innovation and development of the manufacturing industry, helping users to develop from the traditional production mode to a more intelligent and efficient, green and environmental protection direction.

However, defects in the powder laying process and printing process are prone to occur during the melting process of laser selection. In order to meet the production needs of more users, the laser uses its own technical advantages and production experience to constantly upgrade and iterate the equipment. In view of the defects in the powder laying process, the self-developed powder bed monitoring system can automatically fill powder and automatically alarm abnormal powder laying.

In view of the sputtering, spheroidization, porosity, poor surface quality, cracks, geometric deformation and other defects in the printing process, our company uses the laser additive process detection system for real-time monitoring, which provides a strong guarantee for the high-quality printing and forming of the equipment.

Laser additive process detection system

The molten pool monitoring system is mainly used for real-time monitoring, analysis and evaluation of molten pool information of laser selective melting equipment, which is also an important resource for process development, quality traceability and defect analysis. The coaxial sensor is used to monitor the molten pool status data in the printing process in real time, and the reference value and adaptive algorithm are used to diagnose the process status in the printing process in real time and display the abnormal area of the printed parts, so as to realize the defect detection and process quality tracing in the additive manufacturing process.

1. System functions

Real-time monitoring: During the printing process, it can monitor the laser energy, reflected laser energy, metal vapor, and light radiation of the molten pool in real time, capture the real-time status data of the molten pool, and display it in real time through 2D and 3D interfaces.

The four channels are: laser power channel, visible light radiation channel, laser reflection channel, infrared heat radiation channel

Offline analysis: Refine the analysis of historical data, generate quality reports, and facilitate users to conduct quality traceability and defect location.

Feature analysis: The mapping relationship between process parameters, molten pool state and signal characteristics is analyzed to evaluate the state of the process.

2. System advantages

On the one hand, the molten pool monitoring system can detect whether the molten pool is unstable in real time, and on the other hand, it can be used as a quantitative pointer for process strategy optimization to ensure the quality and consistency of parts. In addition, real-time monitoring is also the basis for closed-loop control and intelligence of the metal 3D printing process.

The laser additive process detection system has been verified by practice, which not only solves the problem of difficult observation and monitoring in the printing process, but also helps to improve the process stability and enhance the reliability of printing quality. Our LiM-X series laser selection melting equipment can be selected with this system.

As a domestic head metal 3D printing equipment manufacturer, Lei Ming Laser knows that continuous promotion of technological innovation, continuous upgrading of products, adhere to high-quality manufacturing is the key to maintain competitiveness. We will start from the full range of design, manufacturing and service, explore the optimization and upgrading path of all aspects, provide users with more efficient and intelligent metal 3D printing overall solutions, and inject strong momentum into the transformation and upgrading of the manufacturing industry.

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