Improvement of the Corrosion Resistance of Gas Metal Arc Weld with E-coat by Newly Developed Shielding Gas.

Uchihara, Masato; Takahashi, Michiyasu; Sakoda, Akito; Taka, Takao; Nakata, J

doi:10.2320/materia.36.388

Cited by 3 publications

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“…Slag is formed from silicone and manganese in steel, e.g., welding wires and steel sheets, and oxygen in the shielding gas. Thus, a method is reported 2,3) by which slag is reduced by decreasing the oxidative gases (CO 2 , O 2 ) in the shielding gas to improve the corrosion resistance after electrodeposition coating. However, decreasing oxidative gases in the shielding gas causes an unstable arc, insuf cient penetration, and uneven bead formation.…”

Section: Introductionmentioning

confidence: 99%

Effects of Shot Blasting on Corrosion Properties after Electrodeposition and Fatigue Properties of Arc Welds in Automotive Steel Sheets

2017

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In this study, we investigated the effect of shot blasting on the corrosion properties after electrodeposition and the fatigue properties of the arc welds in automotive steel sheets. The corrosion properties of arc welds after electrodeposition were signi cantly improved by shot blasting due to the removal of slag and fume, which can cause painting defects. Also, the fatigue strength of welded joints was enhanced by shot blasting, because the mean stress effect due to compressive residual stress improved the fatigue properties. These results suggest that shot blasting has the potential to reduce the thickness of arc welded steel parts in automobile chassis.

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Section: Introductionmentioning

confidence: 99%