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15048

Taguchi Metodu ve FEM Analizi ile DD13 Sacların MAG Bindirme Kaynağında Kaynak Parametrelerinin Optimizasyonu

Bu çalışmada, otomobil salıncak imalatında kullanılan DD13 sac malzemelerinin GMAW (Gas Metal Arc Welding) kaynak yöntemi ile kaynak yöntemi, kaynak amperi ve kaynak hızı gibi farklı parametreler ile kaynatılmıştır. Kaynak parametrelerinin, kaynak dikişi sertliğinde en düşük sertlik değerini verecek optimize değer Taguchi yöntemiyle hesaplanmıştır. Ayrıca sertlik değişimine etkisi olduğu düşünülen ısı girdisi değerleri hesaplanmış, çıkan sonuçlar sertlik değişimi ve Taguchi optimizasyonu değerlerini yorumlamada kullanılmıştır. Yapılan deneysel çalışmalardan sonra çıkan optimize değer gerçek sonuçlar ile karşılaştırılmış ve doğrulama testi yapılmıştır. Optimize işlemi sonucunda en düşük sertlik değeri tahmini 172.98 HV0.1 olarak 420 min/mm kaynak hızında, 290 A ve 33.6 V parametreleri ile yapılan MAG kaynağında ulaşılmıştır. Doğrulama testi sonucu 173.4 HV0.1 ile tutarlı olduğu görülmüştür. Sonlu elemanlar analizi (FEM) bu değerler temel alınarak Simufact Welding 8.0 yazılımı ile yapılmıştır. Analiz sonucu kaynak makro yapısı, termal değişimler ve çarpılma miktarı incelenmiştir. Elde edilen sonuçlar doğrulama deneyleri ile yakınlık göstermektedir.
Anahtar Kelimeler:

Sonlu elemanlar analizi, Sertlik, Isı girdisi, MAG kaynağı, Taguchi metodu

Optimization of Welding Parameters in MAG Lap Welding of DD13 Sheet Metal with Taguchi Method and FEM Analysis

In this study, DD13 sheet materials used in automobile swing manufacturing were welded with GMAW (Gas Metal Arc Welding) welding method with different parameters such as welding method, welding amperage, and welding speed. The optimized value of the welding parameters, which will give the lowest hardness value in the weld seam hardness, was calculated by the Taguchi method. In addition, the heat input values that are thought to affect the hardness change were calculated, and the results were used to interpret the hardness change and Taguchi optimization values. After the experimental studies, the optimized value was compared with the actual results, and the verification test was performed. As a result of the optimization process, the lowest hardness value was estimated as 172.98 HV0.1 in MAG welding performed at 420 min/mm welding speed, 290 A, and 33.6 V parameters. The validation test result was found to be consistent with 173.4 HV0.1. Based on these values, finite element analysis (FEM) was performed with Simufact Welding 8.0 software. As a result of the investigation, the weld macrostructure, thermal changes, and the amount of distortion were examined. The results obtained are in agreement with the validation experiments.
Keywords:

Finite element method analysis, Hardness, Heat input, MAG welding, Taguchi method,

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İmalat Teknolojileri ve Uygulamaları-Cover
  • Yayın Aralığı: Yılda 3 Sayı
  • Başlangıç: 2020
  • Yayıncı: Mustafa GÜNAY
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