Effect of welding current on mechanical properties of galvanized chromided steel sheets in electrical resistance spot welding

Aslanlar, Salim; Oğur, Ahmet; Özsaraç, Uğur; İlhan, Erdinç; Demir, Zafer

doi:10.1016/j.matdes.2005.06.022

Cited by 97 publications

(48 citation statements)

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“…The nugget size increasing until expulsion occurs. The results agree with different studies, see Ref (Aslanlar et al, 2007;Pereira, Ferreira, Loureiro, Costa, & Bártolo, 2010;Moshayedi & Sattari-Far, 2012). The increasing current, i.e.…”

Section: Effect Of Current On Joint Strength and Weld Nugget Areasupporting

confidence: 93%

Mechanical Properties Investigation of Multi-Lap Stainless Steel Sheets

Al-Attaby¹,

Al-Jumaili²

2015

JMSR

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The mechanical testing and microstructers for austenititc stainless steel have been carried out to indicate the effect of the localized heating on the spot welds. The results indicated that the increasing of the heating will increase the tensile shear strength rapidly up to the expulsion point. Therefore, the hardness increases with the increasing of the weld nugget area. Hence, the fracturing tendencies have been observed inside the nugget. Nevertheless, the outer surface cracking is developed by adding a thin layer of pure metals between the two stainless steel 304L sheets. It was shown that the addition of pure metals, 3-lap sheets decreases the joint strength as compared with the 2-lap joints for the same parameters. The effect of micro cracking and the intensive brittleness decreases the joint strength. The excessive cracking was observed in 3-lap as compared with the 2-lap joint.

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Section: Effect Of Current On Joint Strength and Weld Nugget Areasupporting

confidence: 93%

Mechanical Properties Investigation of Multi-Lap Stainless Steel Sheets

Al-Attaby¹,

Al-Jumaili²

2015

JMSR

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“…Table IV and V show that welding current and welding times are signicant, whereas electrode pressure, clamping time and holding times are less eective parameters when both nucleus diameter and T-P strength of the weld is considered. The results are similar to those obtained by Aslanlar et al [2,3,12], who reported that welding current and welding time were signicant factors inuencing the T-P strength of weld joints in the ERSW.…”

Section: Experimental Worksupporting

confidence: 91%

“…Signal-to-noise (S/N ) ratio was calculated by using the values of the measurements. The previous studies have reported that an optimal nucleus diameter is needed to obtain the maximum strength of welding joints [2,3,7]. So, the nominalthe-better quality characteristics, represented by Eq.…”

Section: Experimental Workmentioning

confidence: 99%

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Application of Taguchi Method to Investigate the Effect of Nucleus Diameter on Mechanical Properties of Automotive Sheets in Electrical Resistance Spot Welding

Savaş

2015

Acta Phys. Pol. A

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In this study, the eects of nucleus diameter on tensile-peel strength in electrical resistance spot welding were investigated. Taguchi design approach has been employed to the experimental planning, the L27(3 13 ) orthogonal array. The larger-the-better and the nominal-the-best response criteria were selected to obtain the optimum conditions for nucleus diameter and tensile-peel strength, respectively. In addition, the eects of ve parameters, electrode pressure, clamping time, welding current, welding time, and holding time, were examined in this way. Results showed that the tensile-peel strength was related with nucleus diameter, and that welding current and welding time were the most eective parameters for improvement of the strength of weld joints.

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“…At application of low welding current, small weld nugget widths and similarly lower tensile-shear and tensile-peel strength values were obtained, compared to those of base-metal, due to application of low amount of heat to the welding zone [12][13][14][15]. At application of long welding time and high welding current, weld nugget spurts out between the two sheets, Figs.…”

Section: Resultsmentioning

confidence: 89%

The Effect of Nugget Sizes on Mechanical Properties in Resistance Spot Welding of S235JR(Cu) Steel Sheets Used in Railway Vehicles

et al. 2016

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This paper presents an experimental study on the resistance spot welding of S235JR(Cu) steel sheets used in side walls and roofs of rail vehicle bodies. A timer and current controlled resistance spot welding machine having 120 kVA capacity and a pneumatic application mechanism with a single lever were used to prepare the specimens. Welding duration was chosen to be 5, 10, 15, 20, 25 and 30 periods (1 period = 0.02 s) and also welding currents were increased from 6 kA up to 14 kA in steps of 0.5 kA. The electrode force was kept constant at 6 kN. The obtained welding joints were exposed to tensile peel and tensile shear tests and their nugget sizes were measured by means of an optical microscope. The effect of nugget sizes on tensile peel strength and tensile-shear strength was determined using weld lobe diagrams. Based on this data the optimum welding currents and times were advised.

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Effect of welding current on mechanical properties of galvanized chromided steel sheets in electrical resistance spot welding

Cited by 97 publications

References 1 publication

Mechanical Properties Investigation of Multi-Lap Stainless Steel Sheets

Mechanical Properties Investigation of Multi-Lap Stainless Steel Sheets

Application of Taguchi Method to Investigate the Effect of Nucleus Diameter on Mechanical Properties of Automotive Sheets in Electrical Resistance Spot Welding

The Effect of Nugget Sizes on Mechanical Properties in Resistance Spot Welding of S235JR(Cu) Steel Sheets Used in Railway Vehicles

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