Automatic online laser cleaning device for large cavity inner wall dirt and method thereof

A laser cleaning and cavity technology, applied in cleaning methods and utensils, chemical instruments and methods, laser welding equipment, etc., can solve the problems of pollution, low efficiency, long time consumption, etc., to improve cleaning efficiency, and the cleaning effect is obvious and stable. good effect

Inactive Publication Date: 2018-04-20
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, for the cleaning of the inner wall of a large cavity, chemical methods are generally used for corrosion cleaning, which leads to seri

Method used

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  • Automatic online laser cleaning device for large cavity inner wall dirt and method thereof
  • Automatic online laser cleaning device for large cavity inner wall dirt and method thereof
  • Automatic online laser cleaning device for large cavity inner wall dirt and method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0041] The present invention performs laser cleaning on the surface stains on the inner wall of the 7075 aluminum alloy circular cavity:

[0042] Considering the performance of 7075 aluminum alloy and the state of surface stains, we adopt the following process parameters: laser wavelength 1064nm; laser output power 500W, fiber coupling efficiency ≥ 85%; laser power instability ≤ 3%; laser frequency 10kHz The laser pulse width is 30ns; the laser diameter of the laser source is 3mm (±0.1mm); the far-field divergence angle is ≤2.0mrad; the spatial distribution of the beam is a super-Gaussian flat-top distribution. Then modify the pulse width, respectively, using 40ns and 20ns and then cleaning. As shown in Table 1.

[0043] Table 1 7075 aluminum alloy surface stain laser process parameters

[0044] Laser wavelength

power

coupling efficiency

Instability

frequency

pulse width

divergence angle

Laser diameter

1064nm

500W

≥85％

≤3...

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PUM

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Abstract

The invention relates to an automatic online laser cleaning device for large cavity inner wall dirt. The device comprises a main control computer, and a laser, a robot and an effect monitoring deviceconnected with the main control computer; the tail end of the robot is fixedly connected with a laser head of the laser; the effect monitoring device is arranged on the laser head of the laser; the main control computer obtains a machining cleaning motion trajectory of the inner wall surface of a cavity according to a model of the cavity, then, controls the robot to enable the laser head to move in the cavity along the motion trajectory, and meanwhile, controls the laser head to emit laser to the inner wall of the cavity to realize laser cleaning; and images are sent to the main control computer. The device is excellent in stability and obvious in cleaning effect, improves the cleaning efficiency, and saves the time.

Description

technical field [0001] The invention proposes an online laser cleaning device and method for the dirt on the inner wall of a large cavity, which can realize laser cleaning of scale stains in pipes with sizes above the micron level and arbitrary shapes. Background technique [0002] Laser cleaning has the characteristics of non-abrasive, non-contact, non-thermal effect and suitable for objects of various materials. It is considered to be the most reliable and effective solution, effectively avoiding the damage caused by chemical agents and mechanical methods. and pollution. [0003] Laser cleaning technology uses high-energy laser beams to irradiate the surface of the workpiece, so that the dirt, rust or coating on the surface evaporates or peels off instantly, so as to achieve a clean process. This process is actually a process of interaction between laser and matter, including A series of chemical and physical effects destroy the force between the pollutant and the object ...

Claims

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Application Information

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IPC IPC(8): B08B7/00B23K26/402
CPCB08B7/0042B23K26/402
Inventor 陆莹赵吉宾乔红超
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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