Finite element analysis and experimental validation of high-speed laser surface hardening process

Anusha, E.; Kumar, Adepu; Shariff, S.M.

doi:10.1007/s00170-021-07303-z

Cited by 12 publications

(2 citation statements)

References 39 publications

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“…Focusing on developing a simple model to reduce computation time, they calculated 3D thermal fields and predicted the evolution of microstructures. In the study [18], a finite element method is presented with an aim to predict the temperature distribution for optimizing laser surface hardening process on a cylindrical steel solid rod. Martinez et al [19] studied hardening using scanning optics.…”

Section: Introductionmentioning

confidence: 99%

Strategies of Heating and Hardening External Corners on the Example of Bending Tools for Press Brakes

Nowotyńska¹,

Kut²

2022

Adv. Sci. Technol. Res. J.

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In the paper the methods of laser hardening of external tool corners on the example of bending tools for press brakes were presented. The disadvantages and limitations of the most commonly used techniques for guiding a hardening laser light beam are presented, i.e.: (i) in one pass parallel to the tool corner plane symmetry, (ii) in two passes perpendicular to the surfaces adjacent to the corner, and (iii) in one pass perpendicular to the surface adjacent to the corner by using two diode lasers. The microstructure of the tool material after laser and induction hardening was compared. A significant influence of the heating method on the microstructure of the tool material after hardening was demonstrated. The original method of hardening the outer corners of bending tools using a hardening laser beam splitter was subject to a more detailed analysis. The analysis of material heating in simultaneously hardened corner area and adjacent surfaces was carried out using the Marc/Mentat software based on the finite element method. By analyzing the temperature distributions it was shown that if a beam splitter was used, obtaining a continuous and uniform hardened layer (i.e. with comparable hardness, depth, without tempered or non-tempered areas) in the area of the outer corner and adjacent surfaces was possible. In practice, achieving such a layer is conditioned by the correct selection of the size of the k parameter which determines the distance between the separated beams of laser light. Depending on the geometry of the hardened tool corner and the parameters of the hardening laser beam, this distance can be determined experimentally or on the basis of numerical simulation.

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Section: Introductionmentioning

confidence: 99%

Strategies of Heating and Hardening External Corners on the Example of Bending Tools for Press Brakes

Nowotyńska¹,

Kut²

2022

Adv. Sci. Technol. Res. J.

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“…Многофункционально, многообразно и высокоэффективно применение метода КЭ при проектировании процессов ЛО материалов, включая жаропрочные и легированные стали, композиты, сплавы цветных металлов. При разработке лазерных технологий метод КЭ применяется для численного анализа процесса лазерной резки, выбора и оценки режимов обработки, параметров, характеризующих зону нагрева и качество реза [13; 14], анализа температурных полей при термообработке как импульсным [15], так и непрерывным излучением, например, легированных сталей [16][17][18], титановых сплавов [19]. Используя метод КЭ, возможно прогнозировать распределение температуры для достижения однородного по глубине ЗЛВ упрочненного слоя [16; 18], анализировать и определять параметры ЛИ, обеспечивающие требуемые параметры ЗЛВ, качество и глубину зоны закалки [15; 18; 19].…”

Section: Introductionunclassified

Optimal Scheme of Laser Hardening of a Tool Wedge Tip

Yaresko¹,

Balakirov²

2021

FMT

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Laser heat treatment is one of the effective methods to improve the operational characteristics of metal-cutting tools. In the practice of laser hardening, there are several methods to select treatment mode: experimental, calculated, and according to reference data. The finite element method is promising for estimating the treatment zone parameters, and its application is the most in-demand for calculating the temperature field of a geometrically complex tool. When organizing the hardening process, the selection and setting of processing modes for the cutting wedge tip are the most difficult. In this regard, the solution for the multifactorial problem of optimizing the hardening scheme of an area near the tool tip is relevant when designing and automating the process of blade tool laser hardening. Using the finite element method in the ANSYS Workbench software, the authors carried out the numerical experiments to optimize the laser hardening scheme of the tool cutting wedge tip on the example of an instrument with a wedge angle equal to 60°. The paper considers three variants of the hardening scheme. The first variant is the implementation of multiple processing of an area adjacent to the tool tip. The second one consists of alternate movement of laser treatment spots along the cutting edges within the tool tip area. According to the third variant, the treatment spots were sequentially located along the bisector of an angle at the tool tip. The study showed that, according to the maximum depth criterion, an optimal hardening scheme is a scheme, which consists of alternate movement of laser treatment spots along the cutting edges in the tool tip area. In this case, the hardening zone characteristics are ensured that exceed similar values describing the hardening zone for other laser treatment options for the tool cutting wedge tip.

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A comprehensive review of metal laser hardening: mechanism, process, and applications

Wang,

Xia,

Liu

et al. 2024

Int J Adv Manuf Technol

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Finite element analysis and experimental validation of high-speed laser surface hardening process

Cited by 12 publications

References 39 publications

Strategies of Heating and Hardening External Corners on the Example of Bending Tools for Press Brakes

Strategies of Heating and Hardening External Corners on the Example of Bending Tools for Press Brakes

Optimal Scheme of Laser Hardening of a Tool Wedge Tip

A comprehensive review of metal laser hardening: mechanism, process, and applications

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