Before completing a squeeze-type resistance weld, which two aspects must be confirmed?

Before completing a squeeze-type resistance weld, which two aspects must be confirmed?

• A. Electrical Resistance and Surface Roughness
• B. Weld Filler Material and Color
• C. Material Type and Thickness
• D. Paint Type and Primer

Answer: (C)

In squeeze-type resistance welding, the heat that fuses the metals comes from resistive heating at the joint, so you must know what material you’re welding and how thick it is. The material type determines how easily electricity and heat flow through the metal, which directly affects the current level and how long it needs to be applied. The thickness sets how much metal must be melted and how much current and pressure are needed to achieve a solid bond without burning through. Knowing both lets you select the correct welding current, weld time, and electrode force to produce a proper fusion. If these aren’t confirmed, you risk a weak weld or damage from excessive heat. While coatings or surface conditions can influence contact quality, the essential parameters you must verify to set up the process are the material type and thickness.