Laser surface hardening of metalworking tools

Brover, A. V.

doi:10.3103/s1068798x08040205

Cited by 2 publications

(2 citation statements)

References 1 publication

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“…During the laser processing of ion-plasma coatings TiN, ZrN there is an opportunity to increase the depth of the alloyed layer while maintaining the basic performance properties of coatings, to ensure a smooth transition of the properties from the coating to the substrate and to reduce the localization of stresses at the interface "coating -substrate" at the expense of diffusion processes with stirring the metal melted by laser radiation [17,18].…”

Section: Resultsmentioning

confidence: 99%

The Morphology of Carbide and Nitride Coatings on Steels after Laser Irradiation

Brover¹,

Brover²

2020

MSF

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The results of experimental studies of the structure and properties of steels and alloys subjected to laser chemical-heat treatment of carbide and nitride coatings created by electro-spark alloying and ion-plasma sputtering are achieved. It is shown that laser processing of coatings allows to change purposefully the structural state and set properties of the surface layers of the product, and, therefore, modify the basic characteristics of process operation and control the most important output parameters – wear products, and the quality of the surface layers of the irradiated parts. It is established that a rational choice of chemical composition and method of applying coatings on the surface of metal products of various functionalities helps to improve the quality of the surface layers, to increase the hardness of the irradiated working areas by 30-50%, wear resistance-2-3 times, as compared to volumetric-hardened steels.

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Section: Resultsmentioning

confidence: 99%

The Morphology of Carbide and Nitride Coatings on Steels after Laser Irradiation

Brover¹,

Brover²

2020

MSF

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“…LTH is a localized heat treatment process involving only heating, with relatively low values of energy density (to avoid surface melting) [25]. The energy density of the radiation may be varied by defocusing the beam, i.e., displacement of the irradiated surface by a certain distance from the focal plane of the laser's objective lens [30]. The calculation of energy density was performed by using Eq.…”

Section: Effect Of Power and Travel Speed On Laser Transformation Harmentioning

confidence: 99%

Experimental Studies on the Microstructure and Hardness of Laser Transformation Hardening of Low Alloy Steel

Бабу

Buvanashekaran

Balasubramanian

2012

Transactions of the Canadian Society for Mechanical Engineering

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An experimental investigation with Nd:YAG laser system was carried out to study the effects of laser hardening process parameters on the microstructure and hardness during laser hardening of EN25 steel. The laser beam is allowed to scan on the surface of the work piece by varying the laser beam power (750–1250 W) and travel speed (500–1000 mm/min) of the work table. The microstructural features of the laser hardened EN25 steel were analysed using optical microscope. The microstructure of the surface layer was found to consist of plate martensite. A substantial increase in surface hardness was achieved, by a factor of 2 times the base material hardness.

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Laser surface hardening of metalworking tools

Cited by 2 publications

References 1 publication

The Morphology of Carbide and Nitride Coatings on Steels after Laser Irradiation

The Morphology of Carbide and Nitride Coatings on Steels after Laser Irradiation

Experimental Studies on the Microstructure and Hardness of Laser Transformation Hardening of Low Alloy Steel

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