A multi-criteria optimisation method for laser welding of austenitic steel 904L

• Autorzy: Nasiłowska B. , Pszczółkowski J. , Bogdanowicz Z. , Bożek M.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Due to the increasing requirements for improvement of the welded structures quality, it is necessary to analyze the welding process in the design phase. In this context a system of criteria for optimization was introduced. This system is based on the integrated computational tools which allow specifying the function for the selection of the parameters of the welding process without the expensive experiments. Design/methodology/approach: The analysed independent variables were as follows: type of welding head (monofocal and bifocal), laser beam power (P) and laser beam travel (welding) speed (v). The following results were selected as the criteria of weld quality assessment: visual assessment of weld and root reinforcement, metallographic assessment of horizontal microsections, microhardness tests, shape factor determined using Jewdokimow and Lawrence methods, and the stress concentration factor. The weld cross-section shape factor was also used as a criterion. An objective function specifying the quality of weld was determined as the sum of point grades given for each of the above assessment criteria. Optimum values of the parameters for laser welding of 904L austenitic steel were determined using MatLab software while taking into account the values of the objective function,. After verifying the experimental results, the following parameters were identified for optimum laser welding of steel: laser beam power and speed of welding with a monofocal head. Findings: The range of the selected technological parameters, ie. head type, power and speed of the laser beam allowed to adjust optimal welding parameters based on the visual and destructive experiments, ie .: P = 4.5 kW, v = 1.4 m/min. Due to the lower defectiveness of the welded joints monofocal head was chosen. Research limitations/implications: This article presents the optimization procedure for the parameters of the laser welding of flat elements with a thickness of 5 mm made of steel 904L. Originality/value: This paper presents a procedure for configuring parameters for laser welding of steel using a multi-criteria optimization method for austenitic steel 904 L laser beam welding.

Słowa kluczowe

EN

optimisation; laser welding; steel 904L

PL

optymalizacja; spawanie laserowe; stal 904L

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2016
• Tom: Vol. 76, nr 2
• Strony: 72--84
• Opis fizyczny: Bibliogr. 23 poz., rys., tab.

Twórcy

autor

Nasiłowska B.

• Faculty of Mechanical Engineering, Military University of Technology, ul. Gen. Sylwestra Kaliskiego 2, 00-908 Warszawa, Poland

autor

Pszczółkowski J.

• Faculty of Mechanical Engineering, Military University of Technology, ul. Gen. Sylwestra Kaliskiego 2, 00-908 Warszawa, Poland

autor

Bogdanowicz Z.

• Faculty of Mechanical Engineering, Military University of Technology, ul. Gen. Sylwestra Kaliskiego 2, 00-908 Warszawa, Poland

autor

Bożek M.

• RWE Group Business Services Poland Sp. z o.o., Department: Grid & Utility Department, ul. Towarów 7a, 00-839 Warszawa, Poland

Bibliografia

• [1] P. Sathiya, K. Panneerselvam, M.Y. Abdul Jaleel, Optimization of laser welding process parameters for super austenitic stainless steel using artificial neural networks and genetic algorithm, Materials & Design 36 (2012) 490-498.
• [2] M. Islam, A. Buijk, M. Rais-Rohani, K. Motoyama, Simulation-based numerical optimization of arc welding process for reduced distortion in welded structures, Finite Elements in Analysis and Design 84 (2014) 54-64.
• [3] P.K. Giridharan, N. Murugan, Optimization of pulsed GTA welding process parameters for the welding of AISI 304L stainless steel sheets, International Journal of Advanced Manufacturing Technology 40 (2009) 478-489.
• [4] P. Sathiya, M.Y. Abdul Jaleel, Influence of shielding gas mixtures on bead profile and microstructural characteristics of super Austenitic stainless steel weldment by laser welding, International Journal of Advanced Manufacturing Technology 54 (2011) 525-535.
• [5] P. Sathiya, M.Y. Abdul Jalee, D. Katherasan, Optimization of welding parameters for laser bead-onplate welding using Taguchi method, Production Engineering Research and Development 4 (2010) 465-476.
• [6] P. Sathiya, M.Y. Abdul Jaleel, D. Katherasan, B. Shanmugarajan, Optimization of laser butt welding parameters with multiple performance characteristics, Optics & Laser Technology 43 (2011) 660-673.
• [7] P. Sathiya, M.Y. Abdul Jaleel, Measurement of the bead profile and microstructural characterization of a CO2 laser welded AISI 904 L super austenitic stainless steel, Optics & Laser Technology 42/6 (2010) 960-968.
• [8] P. Sathiya, K. Panneerselvam, R. Soundararajan, Optimal design for laser beam butt welding process parameter using artificial neural networks and genetic algorithm for super austenitic stainless steel, Optics & Laser Technology 44/6 (2012) 1905-1914.
• [9] B. Nasiłowska, Z. Bogdanowicz, P. Jóźwik, D. Zasada, Structure and mechanical properties of 904 L austenitic steel joints made by TIG and laserbeam welding, Solid State Phenomena 224 (2015) 99-104.
• [10] W. Magda, Offshore pipelines-Design rules, Publishing Scientific and Technical, Warsaw, 2004.
• [11] www.ernefittings.com, 2015.
• [12] www.nickelinstitute.org, 2015.
• [13] H. Smoleska, Materials of construction, Gdask 2007.
• [14] EN 10217-7, Welded steel tubes for pressure purposes Technical delivery conditions Part 7: Stainless steel tubes.
• [15] DIN-EN 10088-1:2014-12 – Stainless steel – Part 1: List of stainless steels.
• [16] References Worldwide Erne Fittings GmbH, Hauptstraße 48, 6824 Schlins, Austria/Europe, www.ernefittings.com, 2015.
• [17] A.K. Lakshminarayanan, V. Balasubramanian, Evaluation of Microstructure and Mechanical Properties of Laser Beam Welded AISI 409M Grade Ferritic Stainless Steel, Journal of Iron and Steel Research, International 19/1 (2012) 72-78.
• [18] ISO 6507-1:2005 PN-EN ISO 13919-1:2002 – Welding – welded joints with electron beam and laser beam – Guidelines for determining the quality levels for the welding imperfections – Part 1: Steel.
• [19] Cz. Goss, B. Nasiłowska, L.Ś nieżek, Low cycle fatigue life of welded joints of steel X5CrNi18-8 Newsletter WAT 4 (2012) 249-263.
• [20] N.A. Machutov, Expansion kritepii pazrusheniya and calculation of structural elements naprochnost, Engineering, Moscow, 1981.
• [21] Z. Bogdanowicz, P. Jóźwik, B. Nasiłowska, Microstructure and mechanical behavior of a CO2 laser and TIG welded 904 L steel, Metallurgy and Foundry Engineering 40/2 (2014) 69-81.
• [22] R. Stryczek, B. Pytlak Multi-objective optimization with adjusted PSO method on example of cutting process of hardened 18CrMo4 steel, Maintenance and Reliability 16/2 (2014) 236-245.
• [23] T. Yifei, T. Zhaohui, Y. Wei, Y. Zhen, Research on energy-saving optimization design of bridge crane, Maintenance and Reliability 15/4 (2013) 449-457.