Bead shape control in high-speed fillet welding using hot-wire GMA laser hybrid welding technology

Marumoto, K.; Tamata, H.; Fujinaga, Akihiro; Takahashi, Tomohiro; Yamamoto, Haruhito; Choi, Jeong-Won; Yamamoto, Mikio

doi:10.1007/s40194-023-01496-5

Cited by 4 publications

(1 citation statement)

References 22 publications

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“…However, these processes have limitations, such as expensive equipment, complex setup, and limited deposition volume. To address this, some researchers have proposed combining arcwelding processes with laser irradiation, resulting in processes such as laser gas metal arc welding (GMAW) [12,13] and hybrid laser SAW [14,15]. While these techniques increase penetration depth, the tolerance of the deposited volume is still limited by the burn-off rate of the filler metal.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Hot-wire Fraction for Enhance Quality in GMAW

Suwannatee,

Yamamoto,

Shinohara

2023

Preprint

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The combination of hot-wire insertion technology and gas metal arc welding (GMAW) is proposed to increase deposition rate and reduce power consumption. This study systematically investigated the effect of hot-wire fraction on weld metal properties. The results show that the compensatory deposition rate from hot-wire insertion provides a similar effective height compared with the rate from conventional GMAW, with a lower weld height/width ratio, lower power consumption, and improved mechanical properties. However, an excessive hot-wire fraction can lead to lack of fusion, and this value should be limited to no more than 44% of the total deposition rate. The relative GMAW and hot-wire fractions were optimized to maximize total deposition volume while avoiding lack of fusion and providing sufficient penetration. With the optimized condition, hot-wire GMAW could be efficiently used to obtain similar deposition rates with lower power consumption and without sacrificing toughness properties. This proposed process offers a sustainable alternative development to conventional GMAW.

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Section: Introductionmentioning

confidence: 99%

Optimization of Hot-wire Fraction for Enhance Quality in GMAW

Suwannatee,

Yamamoto,

Shinohara

2023

Preprint

View full text Add to dashboard Cite

show abstract

Optimization of hot-wire fraction for enhance quality in GMAW

Suwannatee,

Yamamoto,

Shinohara

2023

Weld World

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The combination of hot-wire insertion technology and gas metal arc welding (GMAW) is proposed to increase deposition rate and reduce power consumption. This study systematically investigated the effect of hot-wire fraction on weld metal properties. The results show that the compensatory deposition rate from hot-wire insertion provides a similar effective height compared with the rate from conventional GMAW, with a lower weld height/width ratio, lower power consumption, and improved mechanical properties. However, an excessive hot-wire fraction can lead to lack of fusion, and this value should be limited to no more than 44% of the total deposition rate. The relative GMAW and hotwire fractions were optimized to maximize total deposition volume while avoiding lack of fusion and providing sufficient penetration. With the optimized condition, hot-wire GMAW could be efficiently used to obtain similar deposition rates with lower power consumption and without sacrificing toughness properties. This proposed process offers a sustainable alternative development to conventional GMAW.

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Single-Pass Process of Square Butt Joints without Edge Preparation Using Hot-Wire Gas Metal Arc Welding

Suwannatee

Yamamoto

2023

Metals

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This paper presents a novel approach to welding thick steel plates that offers time and energy savings compared with conventional techniques. The combination of gas metal arc welding (GMAW) and hot-wire technology simplifies the joint configuration and enhances the process tolerance. In this study, a square butt joint was prepared with as-cut edges and a thickness of 15 mm. The relationship between the welding current and the deposition rate of solo GMAW showed limitations and low process tolerance. Increasing the welding current led to a larger deposited volume with unnecessary weld penetration. An independent deposition volume due to hot-wire insertion was used to improve process tolerance. This approach provided an additional volume without increasing the welding current and reduced unnecessary penetration. With optimized parameters, full-penetration single-pass welding was achieved. Compared with the formation of a typical single-v butt joint at a similar welding speed of 30 cm/min, the proposed process reduced the minimum arc time and power consumption by approximately 83% and 62%, respectively. Moreover, a single pass at a travel speed of 60 cm/min was achieved with approximately 91% and 81% less arc time and power consumption, respectively. In summary, the combined process simplifies the joint configuration, enables full-penetration single-pass welding, and reduces time and energy requirements.

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Bead shape control in high-speed fillet welding using hot-wire GMA laser hybrid welding technology

Cited by 4 publications

References 22 publications

Optimization of Hot-wire Fraction for Enhance Quality in GMAW

Optimization of Hot-wire Fraction for Enhance Quality in GMAW

Optimization of hot-wire fraction for enhance quality in GMAW

Single-Pass Process of Square Butt Joints without Edge Preparation Using Hot-Wire Gas Metal Arc Welding

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