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A kind of marine microbial fouling laser cleaning method for decontamination and antifouling

A marine microorganism and laser cleaning technology, applied in cleaning methods and utensils, chemical instruments and methods, etc., can solve problems such as uncontrollable damage to substrates, pollution of the marine environment, poor effects, etc., to achieve accessibility and solve environmental pollution. and waste disposal issues, the effect of good accessibility

Active Publication Date: 2022-03-01
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve some problems such as uncontrollable damage to the base material, low efficiency, poor effect, and pollution of the marine environment by the traditional marine decontamination method

Method used

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  • A kind of marine microbial fouling laser cleaning method for decontamination and antifouling
  • A kind of marine microbial fouling laser cleaning method for decontamination and antifouling
  • A kind of marine microbial fouling laser cleaning method for decontamination and antifouling

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specific Embodiment approach 1

[0029] Specific implementation mode one: a kind of marine microbial fouling laser cleaning decontamination antifouling method of the present embodiment, it is carried out according to the following steps:

[0030] 1. Place the laser cleaning head above the marine microbial fouling surface to be cleaned at a vertical angle or an inclined angle, and keep the distance between the surface to be cleaned and the field lens at 170-190mm;

[0031] 2. Laser removal of marine microorganisms:

[0032] Set laser parameters: laser power is 200-400W, pulse width is 30ns-100ns; pulse frequency is 5-100kHz, single pulse energy is 10-200mJ, line-by-line overlapping rate is 60%-90%; laser scanning speed is ≤5000mm / s, the laser spot size is 50-1000μm; according to the laser parameters set above, the laser is used to scan the marine microbial fouling surface to be cleaned layer by layer to remove marine microorganisms;

[0033] 3. Acquisition of anti-fouling substrate surface:

[0034] Scannin...

specific Embodiment approach 2

[0035] Embodiment 2: The difference between this embodiment and Embodiment 1 is that in step 2, during the layer-by-layer scanning of the marine microbial fouling surface to be cleaned, the thickness of the marine microbial fouling layer removed by each layer of scanning is 20 μm-65 μm. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0036] Embodiment 3: This embodiment is different from Embodiment 1 in that: the shape of the scanning area is square, and the size is <300mm×300mm. Others are the same as in the first embodiment.

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Abstract

A marine microbial fouling laser cleaning decontamination and antifouling method, which relates to the field of marine biology. The purpose of the present invention is to solve the problems of uncontrollable damage to substrates, low efficiency, poor effect, and pollution of the marine environment by traditional marine decontamination methods. question. Through the light-heat-force coupling effects such as ablation vaporization, peeling, explosion, plasma generation, thermal expansion, and small particle splashing generated by the interaction between laser and microbial fouling, the biofouling layer on the surface of the metal material is quickly removed, and then Obtain a clean surface that meets certain surface quality conditions. The method of the present invention can achieve two functions unprecedentedly at the same time, that is, to combine the two functions of decontamination and antifouling into one, and the existence of a thin layer of marine microbial residues can increase the absorption of laser light to reduce the power of processing the substrate. After treatment, the antifouling function of the cleaned surface can be greatly improved, thereby saving energy, reducing costs, and improving effect and efficiency. The invention is applied to the field of decontamination.

Description

technical field [0001] The invention relates to the field of marine organisms, and relates to a new method for laser cleaning, decontamination and antifouling, which is used for marine microbial fouling on metal surfaces serving in marine environments. Background technique [0002] Marine biofouling refers to the phenomenon that marine organisms adhere to the surface of marine engineering structures and cause damage. Studies have shown that the increase in the weight of the hull caused by marine biofouling increases fuel consumption by 40%, and the overall shipping cost increases by 77%. In addition, material damage related to marine microbial adhesion accounts for 70%-80% of the total amount of marine materials, and the annual loss due to microbial fouling is as high as hundreds of billions of dollars. Marine microbial fouling will occur on the surface of high-end weapons and equipment such as offshore strategic oil storage devices, offshore aerospace facilities and equipm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B08B7/00
CPCB08B7/0042
Inventor 陈彦宾田泽陈曦雷正龙黎炳蔚
Owner HARBIN INST OF TECH
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