Laser cleaning of slots of chrome-plated die

Jia, Xianshi; Zhang, Yudong; Chen, Yongqian; Wang, Hailin; Zhu, Guangping

doi:10.1016/j.optlastec.2019.105659

Cited by 15 publications

(4 citation statements)

References 15 publications

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“…Kong [10] et al used CO 2 laser to clean rubber layer in vulcanized rubber mold, studied the rubber layer cleaning threshold and base damage threshold, and found that rubber could be removed without damage under the condition of power density 5-35J/cm 2 . Jia [11] et al used 100W acoustro-optical Q-switched laser to remove rubber on the chrome-plated mold, and found that the mold could be cleaned efficiently when the energy density of single pulse was 0.97J/cm 2 and argon gas was used for gas protection.…”

Section: Introductionmentioning

confidence: 99%

Study on laser degumming and non-destructive technology of rubber press valve

Tang¹,

Liang²,

Li³

et al. 2023

International Conference on Precision Instruments and Optical Engineering (PIOE 2022)

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Laser degumming is a new technology in the maintenance of press valve, which has the advantages of high efficiency, high accuracy, complete degumming and low pollution. However, the metal matrix is prone to thermal damage when subjected to laser action. It is found that 1Cr18Ni9Ti is the most prone to oxidation. If 1Cr18Ni9Ti is not damaged, 2A12 and HPB59 materials will not be damaged under the same laser parameter processing. The internal metallographic structure of 1Cr18Ni9Ti sample does not change when it is oxidized at the boundary without illumination. Therefore, if the nonilluminated surface does not oxidize, it can be considered that the internal metallography of the press valve has not changed; The simulation model of rubber removal was established, and it was found that the method of switching off and on light could control the temperature in the process. When the time ratio of switching on and off light was 1: 3, the rubber residue could be completely removed without damaging the rubber press valve. The simulation parameters are applied to the actual parts experiment, and the simulation results are verified to be reliable, the temperature is controllable and the parts have no damage. The research results in this paper can achieve the task of rubber removal without damaging the substrate.

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Section: Introductionmentioning

confidence: 99%

Study on laser degumming and non-destructive technology of rubber press valve

Tang¹,

Liang²,

Li³

et al. 2023

International Conference on Precision Instruments and Optical Engineering (PIOE 2022)

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“…A continuous high-power semiconductor laser (HPDL) was used to remove rubber coating from a steel surface and the laser removal efficiency was as high as 250 mm 3 /s [ 16 ]. The tire mold was degummed by a 1064 nm Nd: YAG pulsed laser [ 17 ], as the cleaning threshold of rubber (of 22.0 J/cm 2 ) was a little higher than the metal threshold (of 18.6 J/cm 2 ) [ 18 ]. Lu et al studied excimer laser cleaning of organic dirt on the IC die surface and found that the substrate damage threshold was ten times higher than the cleaning threshold of organic matter [ 19 , 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Investigations on 2Cr13 Stainless Valves after Dry-Type Laser Degumming

Zhang

et al. 2022

Micromachines

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The disabled glue on valve surfaces is known to reduce aircraft durability and performance. In this paper, glue contaminants were removed from 2Cr13 stainless valves by dry-type laser processing with a cold air gun and compared with the chemical soaking method. The laser-processed surface was examined by white-light interferometer, scanning electron microscopy, energy dispersive spectroscopy, X-ray diffractometer, hardness tester, and metallographic microscopy. The substrate surface became a little smoother but also had deeper dips due to laser thermal melting. After laser degumming, the new constituent was found in the laser-irradiated region and analyzed as FeCr0.29Ni0.16C0.06, since the ratio of chemical compositions changed. Based on our simulation and experiments, the temperature of the workpiece was effectively controlled by the cold air gun, and its physical properties, including hardness and metallographic structure, were hardly changed. It was shown that laser degumming provides an alternative method for metal valve cleaning.

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“…As a new cleaning method, laser cleaning is also gradually used in manufacturing industry (Zhang et al, 2020). Laser cleaning is used to remove compound contaminants on the surface of tire molds (Jia et al, 2019), paint on the surface of aircraft skins (Zhu et al, 2020a(Zhu et al, , 2020b, rust on the surface of bridge steel (Park et al, 2020), stains on the surface of cultural relics (Andreotti et al, 2016), mold on the surface of paper (Rosati et al, 2014), etc. Laser cleaning has been considered as a promising method to remove surface contaminants, including oxides before welding in recent years (Wang et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…The thermal ablation and associated thermal of the aluminum alloy surface make it easy to reoxidize and form a new oxide film on the substrate. It was reported by Zhang et al (2019) that using laser at 10-ns pulse width to remove the oxide film of AA5083 aluminum alloy, it was found that the laser cleaning sufficiently reduced the amount of the organic contaminants and completely removed the outer layer containing MgO and MgAl 2 O 4 . The newly formed oxide layers consisted of largely Al 2 O 3 as well as MgO.…”

Section: Introductionmentioning

confidence: 99%

Effect of narrow pulse width laser cleaning on corrosion resistance of A5083-H111 aluminum alloy

Wang

et al. 2021

ACMM

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Purpose The purpose of this paper is to promote the corrosion resistance of the 5083-111H aluminum alloy by laser cleaning. Design/methodology/approach Laser with 2 ns pulse width was adopted in this project and the corrosion resistance of cleaned samples was tested by copper-accelerated salt spray (CASS). The surface morphology, elemental composition and distribution were then characterized by SEM. Moreover, surface morphology, elemental composition and distribution were also tested. Findings Results suggested a higher corrosion resistance was successfully obtained by laser cleaning. Compared with samples cleaned by 2000 grit sandpaper, mechanical cleaning resulted in a 53% larger height difference between the peak and valley. The content of the oxygen is 8.85% on the surface cleaned mechanically and the distribution is dependent on the distribution of aluminum whereas that of the laser cleaning sample is 24.41% and the distribution existed even in the Al-poor area. Originality/value In this project, the 2-ns laser cleaning was proved to have the capability to remove the oxide layer on the aluminum alloy surface while retaining an excellent corrosion resistance and smooth surface. Meanwhile, a thorough elemental distribution and smaller grain size lead to a smaller difference in elemental concentration. This retards the diffusion of oxygen into the substrate and hence increases the corrosion resistance of the surface.

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Laser cleaning of slots of chrome-plated die

Cited by 15 publications

References 15 publications

Study on laser degumming and non-destructive technology of rubber press valve

Study on laser degumming and non-destructive technology of rubber press valve

Investigations on 2Cr13 Stainless Valves after Dry-Type Laser Degumming

Effect of narrow pulse width laser cleaning on corrosion resistance of A5083-H111 aluminum alloy

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