Experimental study on laser power influence for diamond grits brazing

Abstract In this paper, experimental study of forming metal parts by laser cladding Rene95 alloy powder was reported. The influence of main process parameters, such as laser power, scanning speed and laser beam diameter, on the thickness, width and the angle of the laser cladding track was investigated. The microstructures of laser cladding parts were studied and compared with those of common casting parts. The obtained Rene95 metal parts formed by laser cladding are dense and of high strength.

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Experimental Study Based on the Widening Melting Roads Cladding Forming of the Hollow Laser

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.419.180 ◽

2013 ◽

Vol 419 ◽

pp. 180-185

Author(s):

Liang Liang Yu ◽

Shi Hong Shi ◽

Ge Yan Fu ◽

Mei Ling Tian

Keyword(s):

Experimental Study ◽

Process Parameters ◽

Research Group ◽

Laser Power ◽

New Technology ◽

Scanning Speed ◽

Feeding Speed ◽

Series Of Experiments ◽

Cladding Layers ◽

Powder Feeding

Our research group has invented a kind of new technology called coaxial inside-beam powder feeding. By series of experiments, this paper analyzed and summarized the process parameters’ influence on the cladding layers’ feature and quanlity, which contain the laser power P, the powder feeding speed Vf, the scanning speed Vs and the defocusing distance L. Some cladding experiments also were made to aquire the cladding roads with variable width. The experimental results indicate that when P, Vf and D×Vs are fixed, roads with stable height and uniformly changing width are acquired by changing Vs and L at the same time.

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Erratum: Experimental study of the effects of femtosecond laser power on the induced-plasma geometry, supercontinuum white light generation and conical emission in air

Modern Physics Letters B ◽

10.1142/s0217984920920037 ◽

2020 ◽

Vol 34 (29) ◽

pp. 2092003

Author(s):

A. I. Sanny ◽

W. M. Edmund Loh

Keyword(s):

Experimental Study ◽

Femtosecond Laser ◽

White Light ◽

Laser Power ◽

White Light Generation ◽

Conical Emission ◽

Light Generation

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Experimental Study on Dilution Ratio of Laser Cladding of Al2O3-13 % TiO2 Ceramic Coating

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.978.36 ◽

2014 ◽

Vol 978 ◽

pp. 36-39

Author(s):

Dong Sheng Wang ◽

Guang Qu ◽

Jin Lan Su

Keyword(s):

Experimental Study ◽

Laser Cladding ◽

Laser Power ◽

Ceramic Coating ◽

Processing Parameters ◽

Ceramic Coatings ◽

Dilution Ratio ◽

Dense Structure ◽

Metallurgical Bonding ◽

Base Superalloy

In this study, Al2O3–13 wt% TiO2ceramic coating was prepared on the substrate of a GH416 Ni-base superalloy by squash presetting laser cladding. The effects of processing parameters on dilution ratio were investigated. The result shows that the coating consists of two zones: the ceramic clad zone and dilution zone. The dilution ratio increases with the increase of laser power, whereas, the dilution ratio decreases with the increase of laser beam moving velocity. However, the coating with a low laser power is difficult to obtain metallurgical bonding to substrate, and with a high moving velocity can easily produce pores. The clad ceramic coatings characterized by a dense structure, no cracks, low dilution, and good metallurgical bonding to substrate were obtained under optimum processing parameters.

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AN EXPERIMENTAL STUDY ON INFLUENCE OF PROCESS PARAMETERS ON DROSS PROPERTIES IN LASER MACHINING OF AISI 304 MATERIAL

Journal of Manufacturing Engineering ◽

10.37255/jme.v4i3pp111-116 ◽

2019 ◽

Vol 14 (3) ◽

Author(s):

Aniket Jadhav ◽

Shailendra Kumar

Keyword(s):

Experimental Study ◽

Process Parameters ◽

Laser Power ◽

Cutting Speed ◽

Gas Pressure ◽

Laser Machining ◽

Influence Of Process Parameters ◽

Aisi 304 ◽

Optimization Of Process Parameters ◽

Model Predictions

The present paper describes an experimental study on influence of process parameters on dross properties in laser machining of AISI 304 material. Process parameters namely laser power, cutting speed and gas pressure are considered in the present work. Design of experiments is done using response surface methodology and analysis of variance is performed in order to identify significance and influence of process parameters on dross height. It is found that laser power and gas pressure are most significant parameters followed by cutting speed. Dross height increases with increase in laser power and decreases with decrease in gas pressure. On the basis of experimental analysis, a second order mathematical model is developed to predict dross height. Model predictions and experimental results are found in reasonable agreement. Further, optimization of process parameters is also performed to minimize dross height

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The role of laser power and pullback velocity in the endovenous laser ablation efficacy: an experimental study

Lasers in Medical Science ◽

10.1007/s10103-017-2214-x ◽

2017 ◽

Vol 32 (5) ◽

pp. 1105-1110 ◽

Cited By ~ 6

Author(s):

N. Yu. Ignatieva ◽

O. L. Zakharkina ◽

C. V. Masayshvili ◽

S. V. Maximov ◽

V. N. Bagratashvili ◽

...

Keyword(s):

Experimental Study ◽

Laser Ablation ◽

Laser Power ◽

Endovenous Laser Ablation

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Experimental study on the restoration from a tilt-azimuth series for improvement in resolution

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010013955x ◽

1995 ◽

Vol 53 ◽

pp. 636-637

Author(s):

Norio Baba ◽

Norihiko Ichise ◽

Syunya Watanabe

Keyword(s):

Experimental Study ◽

Spherical Aberration ◽

Incident Beam ◽

Optical Parameters ◽

Beam Tilting ◽

Illumination Method ◽

Restoration Method ◽

Illumination Mode

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.

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