Copious cooling work table, copious cooling laser shock peening experiment system and control method thereof

A technology of laser shock strengthening and workbench, which is applied in laser welding equipment, heat treatment process control, manufacturing tools, etc. It can solve the problems of low temperature adjustment response speed, large amount of liquid nitrogen usage, and optimal cryogenic temperature difference. The effect of improving temperature control accuracy, reducing processing costs, and widening the temperature adjustment range

CN106319176AActive Publication Date: 2017-01-11JIANGSU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-01-11

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Abstract

The invention provides a copious cooling work table, a copious cooling laser shock peening experiment system and a control method thereof. The conical gap is adjusted according to the electromagnetic principle so that the gasification volume of liquid nitrogen can be accurately controlled, then the copious cooling work table and the surface temperature of a sample can be accurately controlled by adjusting the heat absorption capacity of gasification of the liquid nitrogen, the temperature adjusting range and the temperature rising / lowering speed of the copious cooling laser shock peening experiment system are effectively expanded, and the control accuracy of the surface temperature of the sample is improved through closed-loop control. In addition, intelligent control over the copious cooling laser shock peening technology process is realized through a computer and a PLC control unit, the usage amount of the liquid nitrogen in the experiment process is reduced, and the machining efficiency is improved.
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Description

technical field

[0001] The invention relates to the field of laser processing technology and the field of surface strengthening. It proposes a cryogenic workbench, a cryogenic laser shock strengthening experiment system and its control method, and uses electromagnetic suction to adjust the gap between the cone surfaces so as to accurately control the gasification volume of liquid nitrogen and the surface temperature of the sample. Cryogenic laser shock strengthening experiment system. Background technique

[0002] Cryogenic laser shock strengthening technology combines the multiple advantages of laser shock strengthening high-energy ultrafast and ultra-low temperature deformation technology, which can induce higher dislocation density, thereby significantly improving the hardness of the surface of metal materials. Transportation and other fields have extremely broad application prospects. However, cryogenic laser shock peening technology has extremely high requirements on t...

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0037] like figure 1 , figure 2 As shown, the cryogenic laser shock strengthening experiment system of the present invention mainly includes a casing 33, a laser device 1, an optical path adjustment system, a cryogenic workbench 14, a two-axis motion platform 23, a temperature sensor, a liquid nitrogen tank, and an automatic air compressor. Machine 29, PLC integrated control system 30 and master console 32. The outer shell 33 is divided into a cryogenic treatment area, an optical adjustment area, and a large equipment placement area by the insulation layer 16 . The laser 1, liquid nitrogen tank, automatic air compressor 29, and master console 32 are all placed in the large equipment storage area, and the laser 1 is located at the top of the large equipment storage area...