STRENGTH CHARACTERISTICS ON RESISTANCE SPOT WELDING OF Al ALLOY SHEETS BY TAGUCHI METHOD

2006 ◽  
Vol 20 (25n27) ◽  
pp. 4297-4302 ◽  
Author(s):  
HAN-KI YOON ◽  
BYEONG-HYEON MIN ◽  
CHIL-SOON LEE ◽  
DO-HYOUNG KIM ◽  
YOUN-KYOUM KIM ◽  
...  
Keyword(s):  
Experimental Design ◽  
Taguchi Method ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Welding Current ◽  
Al Alloy ◽  
Welding Time ◽  
Tensile Shear ◽  
Resistance Spot ◽  
Electrode Force

Optimal welding condition in resistance spot welding of 7075-T6 aluminum alloy sheets with the thickness of 0.4mm was investigated by the tensile-shear strength tests and Taguchi method in experimental design with changing various welding conditions respectively. The tensile-shear tests were carried out at cross-head speeds of 0.1mm/min in accordance with the KS B0851. Design methods were systematically performed using an L27(39) orthogonal array table. In the experimental design, three control factors of resistance spot welding conditions were electrode force, welding current and welding time. Electrode force conditions were 882N, 1323N and 1764N, and welding current were 13.5kA, 14kA and 14.5kA, and welding time were 3cycle, 4cycle and 5cycle.

Effect of Resistance Spot Welding Parameters on the Austenitic Stainless Steel 304 Grade by Using 23 Factorial Design

2011 ◽  
Vol 216 ◽  
pp. 666-670 ◽  
Author(s):  
Prachya Peasura
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Welding Process ◽  
Welding Current ◽  
Welding Time ◽  
Tensile Shear ◽  
Resistance Spot ◽  
Electrode Force

This research was study the effect of resistance spot welding process on physical properties. The specimen was austenitic stainless steel sheet of 1 mm. The experiments with 23 factorial design. The factors used in this study are welding current at 8,000 and 12,000 Amp, welding time at 8 and 12 cycle and electrode force were set at 1.5 and 2.5 kN. The welded specimens were tested by tensile shear testing according to JIS Z 3136: 1999 and macro structure testing according to JIS Z 3139: 1978. The result showed that the welding current, welding time and electrode force had interaction on tensile shear and nugget size at 95% confidential (P value < 0.05). Factors affecting the tensile shear are the most welding current of 12,000 amp., welding time of 8 cycle and electrode force of 2.5 kN. were tensile shear of 9.83 kN. The nugget size was maximum at 7.15 mm. on welding current of 12,000 amp., welding time of 12 cycle and electrode force of 1.5 kN This research can bring information to the foundation in choosing the appropriate parameters to resistance spot welding process.

Optimization of Parameters and Research on Joint Microstructure of Resistance Spot Welding for 316 Stainless Steel

2013 ◽  
Vol 652-654 ◽  
pp. 2326-2329 ◽  
Author(s):  
Hui Liu ◽  
Xue Dong Xu ◽  
Xiao Qing Zhang
Keyword(s):  
Stainless Steel ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Welding Current ◽  
Shear Load ◽  
Welding Time ◽  
Tensile Shear ◽  
316 Stainless Steel ◽  
Resistance Spot ◽  
Electrode Force

The experimental investigations on resistance spot welding are presented for 316 stainless steel. The influence of spot welding parameters (welding time, electrode force and welding current) on the tensile shear load and the diameter of nugget have been researched, based on an orthogonal test and analysis method. The results show that welding current has significant influence on the tensile shear load and diameter of nugget, and then is electrode force, welding time in turn. The optimum parameters are as follows: welding time is 5 cycles, electrode force is 3.5KN and welding current is 5.5KA. And the maximum tensile shear force of joint is up to 13.55KN.

scholarly journals Optimization of Resistance Spot Welding (RSW) Parameters by using Taguchi Method

2020 ◽  
Vol 9 (3) ◽  
pp. 2795-2800
Keyword(s):  
Shear Strength ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Welding Current ◽  
Welding Parameters ◽  
Welding Time ◽  
Tensile Shear Strength ◽  
Tensile Shear ◽  
Resistance Spot ◽  
Electrode Force

This study was intended to optimize the resistance Spot Welding Parameters (RSW) of sheet metals joints. The variation parameters selected were electrode force, welding current and welding time of 1.2 mm thickness low carbon steel. The settings of process parameters were conducted according to the L9 Taguchi orthogonal array in randomized way. The optimum process parameter was then obtained by using signal to noise ratio and analyzed further on the significant level by using Analysis of Variance (ANOVA). The developed response has been found well fitted and can be effectively used for tensile shear strength prediction. The optimum parameters achieved were electrode force (2.3 kN), welding time (10 cycles) and welding current (8 kA). Based on the ANOVA, it was found that the electrode force is a vital parameter in controlling the tensile shear strength as compared to welding time and welding current.

Optimization of Resistance Spot Welding on Aluminum Magnesium 5052 Grade with 23 Factorial Designs

2012 ◽  
Vol 622-623 ◽  
pp. 340-343
Author(s):  
Prachya Peasura
Keyword(s):  
Magnesium Alloys ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Welding Current ◽  
P Value ◽  
Welding Time ◽  
Tensile Shear ◽  
Resistance Spot ◽  
Specific Strength ◽  
Electrode Force

Aluminum magnesium alloys 5052 grade are also attractive in these fields due to their lower density and high specific strength. Therefore, it can be expected that the joining of aluminum alloys and magnesium alloys needs to be solved in industrial application. This research was study the effect of resistance spot welding (RSW) parameter on mechanical properties and macro structure. The specimen was aluminum magnesium 5052 grade sheet of 1 mm thickness. This experimental study aims at 23factorial design optimizing various RSW parameters including welding current at 14,500 and 15,500 amp, welding time at 50 and 60 cycle and electrode force were set at 1.2 and 2.2 kN. The welded specimens were tested by tensile shear testing according to JIS Z 3136: 1999 and macro structure testing according to JIS Z 3139: 1978. The result showed that both of welding current, welding time and electrode force had interaction on tensile shear and nugget size at 95% confidential (P value < 0.05). Factors affecting the optimum were welding current of 14,500 amp. , welding time of 60 cycle and electrode force of 1.2 kN. This research can bring information to the foundation in choosing the appropriate parameters to RSW process.

Optimization of Parameters and Research on Joint Microstructure of Resistance Spot Welding of 201 Stainless Steel

2011 ◽  
Vol 418-420 ◽  
pp. 1359-1363 ◽  
Author(s):  
Hui Liu ◽  
Hai Dong Wang ◽  
Xiao Qing Zhang ◽  
Cai Wen Li
Keyword(s):  
Stainless Steel ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Great Influence ◽  
Welding Current ◽  
Welding Parameters ◽  
Welding Time ◽  
Tensile Shear ◽  
Resistance Spot ◽  
Electrode Force

The experimental investigations on resistance spot welding of 201 stainless steel are presented. Experiments are carried out to study the influence of spot welding parameters (electrode force, welding current and welding time) on the tensile shear load and the diameter of nugget, based on an orthogonal test and analysis method. The optimum parameters are as follows: electrode force is 3600N, welding current is 6400A and welding time is 8 cycles. The maximum tensile shear force is up to 8920N.The microstructure of spot weld is columnar crystals in the nugget and equiaxed grains around periphery induced by non-equilibrium freezing. And the heat input has great influence on the welding defects which can cause joint quality degradation.

The Influence of Welding Parameters on Effected the Complete for Resistance Spot Welding on Mild Steel

2011 ◽  
Vol 214 ◽  
pp. 113-117 ◽  
Author(s):  
Prachya Peasura
Keyword(s):  
Mild Steel ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Welding Process ◽  
Welding Current ◽  
Welding Parameters ◽  
Welding Time ◽  
Tensile Shear ◽  
Resistance Spot ◽  
Electrode Force

This research was study the effect of resistance spot welding process on physical properties. The specimen was mild steel sheet metal. The experiments with full factorial design. The factors used in this study are welding current, welding time and electrode force. The welded specimens were tested by tensile shear testing according to JIS Z 3136: 1999 and macro structure testing according to JIS Z 3139: 1978. The result showed that both of welding current, welding time and electrode force had interaction on tensile shear and nugget size at 95% confidential (P value < 0.05). Factors affecting the tensile shear and nugget size are the most welding current 10,000 amp., welding time 10 cycle and electrode force 1 kN. were tensile shear 7.13 kN. and nugget size maximum 6.75 mm. This research can bring information to the foundation in choosing the appropriate parameters to resistance spot welding process.

Dissimilar resistance spot welding of AISI 304 to AISI 409 stainless steels: mechanical properties and microstructural evolutions

2018 ◽  
Vol 115 (6) ◽  
pp. 610 ◽  
Author(s):  
Mehdi Safari ◽  
Hossein Mostaan ◽  
Abdoreza Ghaderi
Keyword(s):  
Stainless Steels ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Steel Sheet ◽  
Welding Current ◽  
Stainless Steel Sheet ◽  
Tensile Shear ◽  
Aisi 304 ◽  
Resistance Spot ◽  
Electrode Force

In this work, dissimilar resistance spot welding of austenitic stainless steel sheet (304 grade) and ferritic stainless steel sheet (409 grade) is studied experimentally. For this purpose, the effects of process parameters such as welding current, welding time and electrode force on tensile-shear strength of resistance spot welded joints are investigated with response surface methodology (RSM). Also, microstructural evolutions during resistance spot welding process of AISI 409 and AISI 304 stainless steels are evaluated by optical microscopy. It is concluded from results that the tensile-shear strength of spot welds is increased with increasing the welding current, welding time and electrode force. It is shown that widmanstatten ferrites have been grown in the weld metal of dissimilar resistance spot welds of AISI 304 and AISI 409 stainless steels.

Effect of Electrode Force on Tensile Shear and Nugget Size of Austenitic Stainless Steel Grade 304 Welds Using Resistance Spot Welding

2011 ◽  
Vol 52-54 ◽  
pp. 2176-2180
Author(s):  
Prachya Peasura
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Current Flow ◽  
Welding Current ◽  
P Value ◽  
Tensile Shear ◽  
Resistance Spot ◽  
Electrode Force

This research was to effect of electrode force on the tensile shear and nugget size of the resistance spot welding. The specimen was austenitic stainless steel 304 grade sheet metal 1.2 mm thickness. The electrode force are 1, 1.5, 2.0, 2.5, and 3.0 kN apply to the specimen. The replications in each treatment are 20 follow JIS Z 3136:1999 and JIS Z 3139:1978. Factor control, welding current 7 kA., time current flow 7 cycle and electrode tip diameter 6 mm. The welded specimens were tested by tensile shear testing according to JIS Z 3136: 1999, macro structure testing according to JIS Z 3139: 1978 and analysis results by using One-way ANOVA .The result showed that electrode force had affected on tensile shear and nugget size at 95% confidential (P value > 0.05). The low force induced the gab between specimen increasing then the current flow difficult to pass and both of gab between specimen and nugget seize had increase (Q=I2Rt). When the resistance increased so that fusion zone will have a high heating. It had affected to nugget size, heat affected zone and mechanical properties decreasing. The electrode forces are complete 2.5 kN. tensile shear 9.21 kN and nugget size 5.82 mm. The data can be applied to be used as process monitoring of resistance spot weld quality

scholarly journals OPTIMIZATION OF THE RESISTANCE SPOT WELDING PROCESS OF SECC-AF AND SGCC GALVANIZED STEEL SHEET USING THE TAGUCHI METHOD

SINERGI ◽  
2021 ◽  
Vol 25 (3) ◽  
pp. 319
Author(s):  
Sukarman Sukarman ◽  
Amri Abdulah ◽  
Apang Djafar Shieddieque ◽  
Nana Rahdiana ◽  
Khoirudin Khoirudin
Keyword(s):  
Shear Strength ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Welding Current ◽  
Galvanized Steel ◽  
Welding Time ◽  
Tensile Shear Strength ◽  
Tensile Shear ◽  
Resistance Spot ◽  
Steel Sheets

This article present the optimization work describes out to joint the dissimilar galvanized steel of SECC-AF (JIS G 3313) and SGCC (JIS G 3302) material. A zinc coating on the surfaces of the galvanized steel sheets will decrease the weldability characteristic of the material. This study used dissimilar galvanised steel sheets to obtain the highest tensile shear strength from the specified resistance spot welding. This research used the Taguchi method with 4-variables and mixed-experimental levels. The mixed-experimental level, namely 2-experimental levels for the first variable and 3-experimental levels for other variables. The highest tensile shear strength was achieved in 5282.13 N. This condition is achieved at a squeezed time of 20 cycles, 27 kA-welding currents, welding time of 0.5 seconds, and holding time of 18 cycles. The S/N ratio analysis has shown the welding current had the most significant effect, followed by welding time, squeeze time, and holding time. The delta values of S/N ratio were 0.79, 0.64, 0.26 and 0.07, respectively. The ANOVA analysis has shown that the P-value of welding current and welding time is 0.006 (0.6%) and 0.015 (1.5%), respectively. This result is expected for optimizing resistance spot welding quality in other materials or significant aspects.

scholarly journals Optimasi parameter resistance spot welding pada pengabungan baja electro-galvanized menggunakan metode Taguchi

2021 ◽  
Vol 11 (1) ◽  
pp. 39
Author(s):  
S. Sukarman ◽  
A. Abdulah
Keyword(s):  
Shear Strength ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Welding Current ◽  
Strength Test ◽  
Welding Time ◽  
Tensile Shear Strength ◽  
Tensile Shear ◽  
Shear Strength Test ◽  
Resistance Spot

The present study features analytical and experimental results of optimizing resistance spot welding performed using a pneumatic (electrode) force system (PFS). This optimization was carried out to incorporate the galvanized steel sheet material SECC-AF (JIS G 3313) and SPCC-SD (JIS 3141) sheet plate coated with zinc with a thickness of about 2.5 microns. The zinc coating on the metal surface causes its weldability to decrease. This study aims to obtain the highest tensile shear strength test results from the combination of the specified resistance spot welding parameters. The research method used the Taguchi method using four variables and a combination of experimental tingkats. This study's experimental tingkat is two tingkats in the first parameter and three tingkats in other parameters. Taguchi optimization results show that the highest tensile shear strength test obtained is 5049.64 N. This was achieved at 22 cycles of squeeze time, 25 kA of welding current, and 0,6-second welding-time, and 12 cycles of holding-time. The S / N ratio analysis found that the welding time had the most significant effect, followed by welding current, holding time, and squeeze time. The delta S / N ratio values were 0.62, 0,41, 0.34 and 0.07, respectively.

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