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Xukun Ni, Hidetoshi Fujii, Manabu Tanaka
Session ID: 303
Published: 2011
Released on J-STAGE: June 24, 2011
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The AA-plasma welding of SUS304 stainless steel was studied. The experimental results show that the arc generated by the plasma welding machine is more centralized and can form deeper penetration of welding pool due to a larger temperature gradient on the weld pool surface. Additionally, the effect of parameters such as oxygen concentration, welding speed and arc length on the shape of the AA plasma welding was also investigated.
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Yoji WADA, Tatsuya YOSHIMOTO, Hideki HORIKAWA, Koji MIYAZAKI, Tomiko Y ...
Session ID: 304
Published: 2011
Released on J-STAGE: June 24, 2011
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Tadashi Kasuya, Hiroshige Inoue, Knichi Takai, Kazuyoshi Saida
Session ID: 305
Published: 2011
Released on J-STAGE: June 24, 2011
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Hydrogen evolutions of retained austenite containing weld metals were measured by the themal desorption method, and determined the binding energy and so on. The calculations and experiments are in good agreement.
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-Evaluating solidification cracking susceptibility by newly developed cracking test-
Masatoshi TOKUNAGA, Hiroki FUJIMOTO, Masanori YASUYAMA, Masato UCHIHAR ...
Session ID: 306
Published: 2011
Released on J-STAGE: June 24, 2011
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Kazuyoshi Saida, Yuki Nomoto, Kousuke Bunda, Hiroyuki Ogiwara, Kazutos ...
Session ID: 307
Published: 2011
Released on J-STAGE: June 24, 2011
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Hot cracking susceptibility of commercial alloy 52 filler metals was evaluated by Varestraint test. Ductility-dip cracking susceptibility was decreased with an increase in tortuousness of grain boundary in the weld metal. The filler metal 52MSS was negligibly susceptible to ductility-dip cracking, while solidification/liquation cracking susceptibilities were heightened in the filler metal 52MSS.
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Weldability of Ultra High-Purity Corrosion-Resistant Alloys (Part 6)
Kazuyoshi Saida, Yasushi Nishijima, Hiroyuki Ogiwara, Kazutoshi Nishim ...
Session ID: 308
Published: 2011
Released on J-STAGE: June 24, 2011
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The hot cracks occurred in extra high-purity 25Cr-35Ni stainless steel was mainly characterised as ductility-dip crack. The amount of P+1.2S in steels should be limited to 45ppm in order to obtain the extremely low ductility-dip cracking susceptibility in 25Cr-35Ni stainless steels.
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Development of numerical model to predict of HAZ cracking susceptibility on fully austenitic high alloy steel(Report 4)
KANA JOUTOKU, TAKAHIRO OSUKI, KAZUHIRO OGAWA
Session ID: 309
Published: 2011
Released on J-STAGE: June 24, 2011
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Development of weld crack of high alloyed steel with high Phosphorus (3)
Takahiro Osuki, Hirokazu Okada, Kazuhiro Ogawa
Session ID: 310
Published: 2011
Released on J-STAGE: June 24, 2011
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shinji Kodama, Yoshinari Ishida, Manabu Mizumoto
Session ID: 311
Published: 2011
Released on J-STAGE: June 24, 2011
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Daisuke ABE, Takaaki MATSUOKA, Keiji KUBUSHIRO, Satoru YUSA, Hiroto YA ...
Session ID: 312
Published: 2011
Released on J-STAGE: June 24, 2011
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Keita HATAKEYAMA, Toshiyuki HASEGAWA, Michinori OKUBO
Session ID: 313
Published: 2011
Released on J-STAGE: June 24, 2011
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Examination of difference by presence of casting surface
Naoya Tomonaga, Tomohiro Gunji, Nobuyuki Fujii
Session ID: 314
Published: 2011
Released on J-STAGE: June 24, 2011
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Hiromichi Fujii, Ramanujam Sriraman, Babu Sudarsanam
Session ID: 315
Published: 2011
Released on J-STAGE: June 24, 2011
CONFERENCE PROCEEDINGS
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Hidenori Terasaki, Yu-hei Yamamoto, Yu-ichi komizo
Session ID: 316
Published: 2011
Released on J-STAGE: June 24, 2011
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GMAW Weldability of Ar-O2 Shielding Gas
Yu-ichi Ikegami, Hideki Miyauchi, Hisao Fujikawa, Yu-ji Nakahara, Kazu ...
Session ID: 317
Published: 2011
Released on J-STAGE: June 24, 2011
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GMAW weldability of highly pure 12%Cr ferritic stainless steel for automobile exhaust systems is investigated. The combination of Ar+3.5%O2 shielding gas and SUS430J1L solid wire improves intergranular corrosion resistance of weld metal.
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Tomokatsu Aizawa, Keigo Okagawa, Mehrdad Kashani
Session ID: 318
Published: 2011
Released on J-STAGE: June 24, 2011
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TAKESHI TERAJIMA, HISAMICHI KIMURA, AKIHISA INOUE
Session ID: 319
Published: 2011
Released on J-STAGE: June 24, 2011
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Michiya Matsushima, Noriyasu Nakashima, Hiroyuki Fujie, Shinji Fukumot ...
Session ID: 320
Published: 2011
Released on J-STAGE: June 24, 2011
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SHINJI Fukumoto, Akira Soeda, Masahiko Minami, Yoshihiko Yokoyama, Mic ...
Session ID: 321
Published: 2011
Released on J-STAGE: June 24, 2011
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Yasuhiro Sakurada, Jun Kurobe, Hiroshi Asada, Shingo Mukae, Syuichi Te ...
Session ID: 322
Published: 2011
Released on J-STAGE: June 24, 2011
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In order to improve the spot weldability of surface treated steel sheets,the composite electrode that buried tungsten in the electrode was developed ,and the electrode life was much improved from the chrome copper electrode.
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Yasuaki Naito, Gen Murayama, Yasunobu Miyazaki
Session ID: 323
Published: 2011
Released on J-STAGE: June 24, 2011
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Muneo Matsushita, Rinsei Ikeda, Shigeru Endo
Session ID: 324
Published: 2011
Released on J-STAGE: June 24, 2011
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For the indirect resistance spot welding with single side access of the welding electrode, the nugget formation process affected by the variable controls of electrode force and welding current during welding was studied with experiments as well as numerical simulations to optimize the welding process.
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Toru Okada, Hideki Ueda, Masanori Yasuyama, Masato Uchihara, Kiyoyuki ...
Session ID: 325
Published: 2011
Released on J-STAGE: June 24, 2011
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Hideki Tanishiki, Masahito Mochizuki
Session ID: 326
Published: 2011
Released on J-STAGE: June 24, 2011
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Naoki Seto, Kazuo Mori, Shingo Hirose
Session ID: 401
Published: 2011
Released on J-STAGE: June 24, 2011
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In laser cutting, cutting condition tuning is performed by operator to fit the cutting order. However, this tuning depends on operator's skill and the operator cannot perform tuning if he doesn't know which parameter is significant for this cutting. In this study, the authors try to extract operator's skill about cutting condition tuning using Taguchi method, and verify this method can use as skill analyzing tool or not.
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Kazuomi Kusumoto, Kazuki Shimada
Session ID: 402
Published: 2011
Released on J-STAGE: June 24, 2011
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This study describes the fume evaluation system in plasma arc cutting. The cutting experiment were carried out under various conditions in order to obtain the relationship between quantity of fume and changing of gas flow rate.
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Kazuomi Kusumoto, Kazuki Shimada
Session ID: 403
Published: 2011
Released on J-STAGE: June 24, 2011
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The purpose of this study is to investigate the influence of cutting conditions(arc current and cutting speed) on color characteristics of fume. And the color characteristics is evaluated by using CIELAB color space and measuring spectral reflectance.
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Yoshihiro Yamaguchi, Yoshihiko Uesugi, Yasunori Tanaka, Kazuki Yoshida ...
Session ID: 404
Published: 2011
Released on J-STAGE: June 24, 2011
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An experimental study of a torch for oxygen plasma arc cutting (PAC) was conducted. We made a nozzle equipped with a window and a port for observation the hafnium (Hf) electrode during working, using a color high-speed video camera through the window. We estimated the temperature on the surface of the Hf electrode assuming the black body radiation of the surface. We could estimate the real-time flow rate of plasma gas by the pressure in the nozzle.
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KAZUKI IKUSHIMA, Shinsuke ITOH, Masakazu SHIBAHARA, TOICHI FUKASAWA
Session ID: 405
Published: 2011
Released on J-STAGE: June 24, 2011
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Ninshu Ma, Isaku Chimura
Session ID: 406
Published: 2011
Released on J-STAGE: June 24, 2011
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A FEM software JWELD using inherent strain method is developed for the prediction of welding and assembling deformation. With this software, welding deformation of large structure can be calculated in few minutes. To satisfy the requests of industrial users, a predictor of inherent deformation parameters is also developed. Furthermore, the gap of a weld joint, influence of fixture and welding sequence can be easily simulated using this software.
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Isaku Chimura, Ninshu Ma
Session ID: 407
Published: 2011
Released on J-STAGE: June 24, 2011
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A newly developed FEM software JWELD for prediction of welding deformation is applied for large structure model. With this software, deformation in assemble processes including positioning, tack welding, welding and fixture can be simulated step by step. The influence of the assemble sequence on welding deformation is investigated in details in this study.
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Hidekazu Murakawa, Ninshu Ma, Yuusuke Ohsuga
Session ID: 408
Published: 2011
Released on J-STAGE: June 24, 2011
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The concept of inherent strain is closely related to those of inherent stress, inherent deformation and inherent force. Since the inherent strain is transformed into the deformation when the restraint is small and it is transformed into the stress when the restraint is strong, the framework of FE code for welding simulation can be naturally and conveniently constructed by combining these concepts. The idea how they are integrated in the FE code is presented in this paper.
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Hidekazu Murakawa, Hisashi Serizawa, Jiangchao Wang
Session ID: 409
Published: 2011
Released on J-STAGE: June 24, 2011
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When the welding heat input is large, the buckling type distortion is produced in thin plate structures, such as the deck of car carrier. To predict the formation of buckling type distortion, elastic analysis based on inherent deformation is developed and its effectiveness is demonstrated through example problems.
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Xudong Zhang, Eiji Ashida, Shoh Tarasawa, Yuichi Miura
Session ID: 410
Published: 2011
Released on J-STAGE: June 24, 2011
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You-Chul Kim, Mikihito Hirohata, Kohsuke Yamamoto, Koutarou Inose
Session ID: 411
Published: 2011
Released on J-STAGE: June 24, 2011
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As new joining methods, applicability of laser beam welding or laser/arc hybrid welding on joining of high strength steel has been examined. In this paper, a series of experiments and analyses were conducted to elucidate distortion and residual stress generated by laser/arc hybrid welding on high strength steel HT780.
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Takanori Kitamura, Toshio Terasaki
Session ID: 412
Published: 2011
Released on J-STAGE: June 24, 2011
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This paper deals with the influence of grooving on buckling deformation of thin plate. The steel plate that grooved from the back face on the weld line to the half of plate thickness was used. And, the plate with and without groove were compared for the buckling deformation.
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Hiroshi Suzuki, Jinya Katsuyama, Tohru Tobita, Yukio Morii
Session ID: 413
Published: 2011
Released on J-STAGE: June 24, 2011
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SHINICHIRO NAKAMURA, HISASHI SERIZAWA, HIROYASU TANIGAWA, HIDEKAZU MUR ...
Session ID: 414
Published: 2011
Released on J-STAGE: June 24, 2011
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In order to examine the effect of PWHT on welding residual stress at the joint between first and side walls in TBM, both the numerical analyses were conducted and the result was compared with experiments.
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Yasuhito TAKASHIMA, Tatsuya NISHI, Hiroto SHOJI, Mitsuru OHATA, Fumiyo ...
Session ID: 415
Published: 2011
Released on J-STAGE: June 24, 2011
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Woo-Hyun Song, Dong-Han Seo
Session ID: 416
Published: 2011
Released on J-STAGE: June 24, 2011
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We studied the characteristics of charpy impact toughness for linepipe welds.
We performed submerged arc welding with changing the welding parameters and groove shapes for improving the fusion line toughness.
Fusion line toughness was improved with increasing the width of weld bead inspite of increasing the weld heat input.
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Fuminori Iwamatsu, Katsumasa Miyazaki, Masahito Mochizuki
Session ID: 417
Published: 2011
Released on J-STAGE: June 24, 2011
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Tetsuo Suga, Takeshi Nakagawa, Ayumu Miyakita, Ken Yamashita, Mikihiro ...
Session ID: 418
Published: 2011
Released on J-STAGE: June 24, 2011
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The creep test on 2.25%Cr-1%Mo-V steel weld metal to obtain the creep rupture life for about 1000 hours was investigated, the creep rupture life predicted by Monkman-Grant law, Modified si-ta projection and omega method were compared. When the creep rupture life was predicted at the early stage, it was confirmed that Monkman-Grant law was suitable.
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Yasunori Uehara, Soshu Kirihara
Session ID: 419
Published: 2011
Released on J-STAGE: June 24, 2011
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Soshu Kirihara, Yasunori Uehara, Noritoshi Ohta, Satoko Tasaki
Session ID: 420
Published: 2011
Released on J-STAGE: June 24, 2011
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hiroki yanagiya, mitsuru nakamura, takayuki kuwashima, tetsuya sonoda, ...
Session ID: 421
Published: 2011
Released on J-STAGE: June 24, 2011
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Cold spray is a new coating technology for deposition of metal or alloy powders. Aluminum powders are sprayed to three kind of substrates for studying the deposition efficiency. It was found that deposition efficiency is different in each substrates.
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Akira Kobayashi, Toshio KURODA, Hisamichi KIMURA, Akihisa INOUE
Session ID: 422
Published: 2011
Released on J-STAGE: June 24, 2011
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