Recommended parameters for energy storage welding

What are the optimal welding parameters?

Optimal parameters were: 160 A welding current, 60° groove angle, 3.25 electrode diameter, 3 mm root gap, and 3 mm root face. Implementation of optimal parameters led to significant improvements: 10.53% higher tensile strength, 14.28% increased impact toughness, 8.55% reduced hardness, and a remarkable 33.33% decrease in angular distortion.

How do welding parameters affect material properties?

In summary, the systematic analysis of welding parameters and their effects on the material properties provides valuable insights. The observed defects, such as lack of penetration, porosity, and lack of fusion, directly influence the mechanical characteristics of the welded samples.

What are the characteristics of a good welding material?

In experiments 1, 2, 5, 6, 8, 9, and 12, where no defects are observed, the material demonstrates favorable properties, such as higher tensile strength, hardness, and impact resistance. These characteristics suggest good elasticity and plasticity, indicating a successful welding process.

Which welding techniques can be used for connecting battery cells?

Brass (CuZn37) test samples are used for the quantitative comparison of the welding techniques, as this metal can be processed by all three welding techniques. At the end of the presented work, the suitability of resistance spot, ultrasonic and laser beam welding for connecting battery cells is evaluated.

How to optimize weld quality?

Saha and Majumder used GRA-PCA combined with the Taguchi method to optimize weld current, voltage, and electrode stick-out of SAW. The hardness of the weld, dilution, and width of the bead were the response factors. The suggested parameter settings for improved quality were 19 mm electrode stick out, 28 V voltage, and 310 A current.

How to improve welding performance?

The welding current of 100 A, welding speed of 4 cm/min, arc voltage of 14 V, and E309 electrode type improved the performance by 23.0%. Saha and Majumder used GRA-PCA combined with the Taguchi method to optimize weld current, voltage, and electrode stick-out of SAW.