Ostenitik Paslanmaz Çeliklerin TIG Kaynağında Kaynak Akımı ve Kompozisyonun Nufuziyete Etkisi

In this study, welding was performed on the plates of two different types of AISI 316 and AISI 316Ti austenitic stainless steels by GTAW (Gas Tungsten Arc Welding) without using welding consumable in flat position. Automatic GTAW welding machine was used to control and obtain the exact values. The effects of welding currents used in welding process and the compositions of the stainless steels materials on the penetration were investigated. Weld bead size and shape such as bead width and dept were important considerations for penetration. Welding process was performed using various welding current values. The study showed that both welding parameters and composition of the stainless steels has influence on the penetration and It is increased with increasing of welding current. Besides, P/W rate of the weldments were influenced by the current and hardness values of the weld metal decrease with increasing welding current. The microstructure of the weld metal was also changed by variation of welding current.

Anahtar Kelimeler:

Kaynak parametreleri, nufuziyet, ostenitik paslanmaz çelik, TIG kaynağı

The Effect of Welding Current and Composition of Stainless steel on the Panetration in GTAW

Keywords:

Welding parameters, penetration, austenitic stainless steel, GTAW,

PDF

___

MODENESI, P.J., APOLINAÂRIO, E.R., PEREIRA, I.M., “TIG Welding with Single-Component Fluxes”, Journal of Materials Processing Technology, 99, 260-265, 2000.
GÜRCAN, M., “TIG Kaynağı”, SEGEM (Sanayi Eğitim ve Geliştirme Merkezi Müdürlüğü, Ankara, 1987.
EŞME, U., “Effect of Pool Geometry on the Quality of TIG Welded Joints”, Çukurova Üniversitesi, Fen Bilimleri Enstitüsü, Doktora Tezi, 2006.
KIM, I.S., SON, J.S., KIM, I.G., KIM, J.Y., KIM, O.S., “A study on relationship between process variables and bead penetration for robotic CO2 arc welding”, Journal of Materials Processing Technology, 136, 139–145, 2003.
MURUGAN, N., GUNARAJ, V., “Prediction and control of weld bead geometry and shape relationships in submerged arc welding of pipes”, Journal of Materials Processing Technology, 168, 478–487, 2005.
KIM, I.S., JEONG, Y.J., SON, I.J., KIM, I.J., KIM, J.Y., KIM, I.K., YARAGADA, P.K.D.V., “Sensitivity analysis for process parameters influencing weld quality in robotic GMA welding process”, Journal of Materials Processing Technology, 140, 676–681, 2003.
WAHAB, M.A., PAINTER, M.J., DAVIES, M.H., “The Prediction of the Temperature Distribution and Weld Pool Geometry in the Gas Metal Arc Welding Process”, Journal of Materials Processing Technology, 77, 233–239, 1998.
EL-BATAHGY, A.M., “Effect of Laser Welding Parameters on Fusion Zone Shape and Solidification Structure of Austenitic Stainless Steels”, Materials Letters, 32, 155-163, 1997.
KARADENIZ, E., ÖZSARAÇ, U., YILDIZ, C., “The Effect of Process Parameters on Penetration in Gas Metal Arc Welding Processes”, Materials and Design, 28, 649–656, 2007.
TEHÇI, T. “Kaynak Parametrelerinin AISI 316 Serisi Ostenitik Paslanmaz Çeliklerin Nufuziyetine ve Mekanik Özelliklere Etkisi” Sakarya Üniversitesi, Fen Bilimleri Enstitüsü, Y. Lisans Tezi Eylül 2011.
YILMAZ, R., TEHÇi, T., “The Effects Of Welding Parameters And Composition Of Stainless Steel On The Teknolojileri Konferansı’09, ICWET, 972-982, 11-13 Haziran 2009,Ankara Uluslararası Kaynak
TÜMER, M., YILMAZ, R., “The Effects of Welding Parameters and Gases Composition on Microstructure and InternationalCongress on Advances in Welding Science and Technology for Construction, Energy and Transportation Systems (AWST - 2011), 483-488, 24- 25 October 2011, Antalya. Stainless Steels”,
SHANPING L., Hidetoshi F., Kiyoshi N., “Influence of Welding Parameters and Shielding Gas Composition on GTA Weld Shape”, ISIJ International, 45, 66-70, 2005.
GAO M., ZENG X., HU Q., “Effects of gas shielding parameters on weld penetration of CO2 laser-TIG hybrid welding” Journal of Materials Processing Technology, 184, 177–183, 2007.
ZERAATI, E., HALVAEE, A., “Effect of Activated Flux on the Weld Shape of 25CrMo4 Low Alloy Steel Welded by TIG Welding Process” , International Congress on Advances in Welding Science and Technology Transportation Systems (AWST - 2011), , 24-25 October 2011, Antalya. Energy and
AIDUN D.K., MARTIN S.A., “Effect of Sulfur and Oxygen on Weld Penetration of High-Purity Austenitic Stainless Steels”, JMEPEG, 6, 496-502, 1997.
SMITH, W.F., “Paslanmaz Çelikler”, “Mühendislik Alaşımlarının Yapı ve Özellikleri”, 5, 1, Çeviri: M. Erdoğan, Nobel Yayın Dağıtım, Ankara,2000. [18]. ODABAŞ, C., “Paslanmaz Özellikleri, Kullanım Alanları, Kaynak Yöntemleri”, Askaynak-İstanbul. 2004. Çelikler, Temel
TUSEK, J., SUBAN, M “Experimental Research of The Effect of Hydrogen in Argon as a Shielding Gas in Arc Welding of High-Alloy Stainless Steel”, International Journal of Hydrogen Energy, 25, 4, , 369–376, 2000.
LOWKE, J.J., RICHARD, M., JAWARD, H., ANTHONY, M.B., “Prediction of Gas Tungsten Arc Welding Properties in Mixtures of Argon and Hydrogen”. IEEE Trans Plasma Sci.; 25, 5, 925- 930, 1997.
DURGUTLU, A., “Experimental Investigation of The Effect of Hydrogen in Argon as a Shielding Gas on TIG Welding of Austenitic Stainless Steel”, Materials and Design,25, 19–23, (2004).
YILMAZ, R., BARLAS Z., “Paslanmaz Çeliklerin Gazaltı Kaynak Yöntemi ile Birleştirilmesinde Koruyucu Gaz Kompozisyonunun Mikroyapı ve Mekanik Üniversitesi Mühendislik Bilimleri Dergisi, C:11, S:3, 391–400, 2005. Etkisi”, Pamukkale Koruyucu Sempozyumu,Denizli, 2006.
RODACCIAI Ürün Belgesi, 2005.
Internet: http://www.matweb.com/ (2010).
LU, S., FUJII, H., NOGI, K., “Marangoni Convection and Weld Shape Variations in Ar–O2 and Ar–CO2 Shielded GTA Welding”, Materials Science and Engineering A, 380, 290–297, 2004.
LIAO, M. T., CHEN, P. Y. “The Effect of Shielding- Gas Compositions on The Microstructure and Mechanical Properties of Stainless Steel Weldments”, Materials Chemistry and Physics, 55, 145-151, 1998.
TÜMER M., YILMAZ R., “ The Effect of Shielding Gases on the Microstructure and Toughness ofStainless Steels Weldments by FCAW”, 63rd Annual Assembly & International Conference of the International Institute of Welding, 847-852, 11-17 July 2010, Istanbul.