Method for monitoring laser melting pool in real time

Abstract

The invention discloses a method for monitoring a laser melting pool in real time and relates to the technical field of temperature monitoring in a laser re-melting process. A device for realizing the method comprises a bracket, an infrared probe, an alarming device and a control box, wherein the bracket is arranged on a main shaft; the infrared probe used for acquiring temperature information of the laser melting pool and the alarming device are arranged on the bracket; the control box is used for processing the temperature information acquired by the infrared probe and is provided with a displayer; a control circuit is arranged in the control box, is connected with a power switch of a temperature field through a relay and comprises a central controller, and a measured temperature analytical model displayer, a data storage module, a communication module and a power module which are respectively connected with the central controller; the communication module is connected with an upper computer. The method has the advantage that great convenience is brought to the acquisition and analysis of the temperature field in the laser re-melting process.

Description

technical field [0001] The invention relates to the technical field of temperature monitoring during laser remelting, in particular to a real-time monitoring method for a laser melting pool. Background technique [0002] In the process of laser remelting, a molten pool is inevitably generated. The evolution of the temperature field determines the heat and mass transfer in the laser molten pool, which directly affects the shape of the molten pool, the structure and performance of the coating and the substrate, and the surface quality of the parts. , so the measurement and detection of the temperature field during laser remelting is crucial. [0003] At present, the measurement of the temperature field in the process of laser remelting is generally done by detecting several fixed points through thermocouples or manual infrared thermometers, and then analyzing and processing. The final experimental results have certain errors, and cannot directly reflect the entire remelting p...

AI Technical Summary

Problems solved by technology

[0003] At present, the measurement of the temperature field in the process of laser remelting is generally to detect several fixed points through thermocouples or manual infrared thermometers, and then analyze and process them. The final experimental results have certain errors, and cannot directly reflect the real-time changes in temperature during the entire remelting process

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