Feasibility Study of Wide Band Laser Surface Treatment

Nogueiras, Maria José; Penide, J.; Comesaña, R.; Val, J. del; Quintero, F.; Boutinguiza, M.; Lusquiños, F.; Pou, J.

doi:10.1016/j.phpro.2013.03.088

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…When conducting these trials, the values of other variables were set at a particular value, i.e. scanning speed at 1.4mm/Sec, Repetition rate, frequency to 4Hz and pulse width from to 20 ms. Shield gas at 30litres/min, spot diameter 1.5mm [7] and focal length to 40mm.Then the surface was inspected to identify any defects and for smooth appearance. From the trial runs 40 Watts to 260 Watts were fixed as lower and upper limits of laser power.…”

Section: Specimen Preparation For Hardening Processmentioning

confidence: 99%

Lasers in Green Manufacturing Processes

Balasubramanian

Manonmani²,

Hemalatha³

2014

AMM

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A safe and healthy work piece is important for sustainable manufacturing process. Green laser surface hardening is a heat treatment process on a part of its application does not use water or oil as quenching media, because it is self-quenching and less detrimental to the environment. Since it is an energy saving process it is fast being adopted by manufacturing industries. Quenching media used in conventional heat treatment process for a sudden cooling of the heated work piece to get hard structure transformation. Unfortunately the reactions of quenchant with hot working also have several negative health, production cost, and environmental impact.This paper focuses the experimental investigation into the roller of green surface hardening on energy saving, the production cost of the industrial components. A comparative study of surface hardening under conventional and laser sources was conducted using similar components. The results show that the quality of hardening improved in laser hardening but the process time increased marginally at one stage and reduced at other shapes of manufacturing. In analyzing the process cost laser hardening show cast saving notably.

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Section: Specimen Preparation For Hardening Processmentioning

confidence: 99%

Lasers in Green Manufacturing Processes

Balasubramanian

Manonmani²,

Hemalatha³

2014

AMM

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“…The main limitation of laser technology for surface treatments (and particularly for laser blasting) is related to their difficulty in treating large areas due to the reduced dimensions of the spot size of a focused laser beam. However, the combination of high-power laser sources and scanning systems used in laser treatments, such as laser hardening [19], microstructuring [10], and more recently in laser cladding [20], can overcome the low productivity of laser blasting process.…”

Section: Introductionmentioning

confidence: 99%

Laser Surface Blasting of Granite Stones Using a Laser Scanning System

et al. 2019

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Granite stones are the most abundant rock of the crust. Due to their beauty, durability, and virtually zero maintenance, they have been used widely since ancient times in all types of construction, as a structural or decorative element. Commonly, this material is used with a polished finishing, but there has been an increased interest in giving it a rustic aspect, mainly for decorative or functional reasons, e.g., to reduce slipping. Rough surfaces are usually produced by means of bush hammering, but this is an extremely noisy and inefficient process. In this work we have explored the capabilities and limits of a laser blasting process assisted by a scanning system in order to produce precise and controllable roughness on two varieties of granite plates. It was found that laser blasting of thin granite tiles can be accomplished with processing widths up to 250 mm at medium-low laser power, obtaining a rustic aspect suitable for use in façades, paving, or flooring. Moreover, laser scanner systems are capable of enhancing the productivity of this process up to ten times greater than that found in previous works.

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