What size is the best welding needle for energy storage spot welding machine

What size electrode do I need for spot welding?

Diameter of the electrode contact surface should be slightly larger than the nugget diameter. For example, spot welding two sheets of 1 mm thickness would require an electrode with a contact diameter of 6 mm. In practice, an electrode with a contact diameter of 6 mm is standard for sheet thickness of 0.5 to 1.25 mm.

How many mm should a spot weld be?

Thus, a spot weld made in two sheets, each 1 mm in thickness, would generate a nugget 5 mm in diameter according to the 5*t ½ -rule. Diameter of the electrode contact surface should be slightly larger than the nugget diameter. For example, spot welding two sheets of 1 mm thickness would require an electrode with a contact diameter of 6 mm.

How thick should a spot weld be?

Specific thickness range Spot weldments are best when welding material 0.020”-0.090” thick. Materials thicker than 0.090” aren’t suitable for a spot weld because the weldment won’t be strong enough, and welding can burn through materials thinner than 0.020”. For thicker parts, plug welding is a better option.

How to choose a weld Nugget?

Choosing the correct diameter of the electrode tip is crucial for the quality of the weld nugget. The diameter of the electrode tip should be based on the thickness of the material being welded, the welding current, and the type of electrode being used.

How to reduce spot welding thickness?

So the overall spot welding thickness is 0.75 thou or 2mm. I decide to reduce the copper electrode to 1/8th or 3mm. The reduced point of contact with the steel during resistance spot welding will increase the concentration of the current flow to a smaller area. With the increase in welding current, the spot welding quality is reduced in two ways.

How do I determine the quality of a pinch weld?

Use the spot welding electrode tip diameter formula calculator an essential factor that affects the quality of the pinch weld. The diameter of the electrode tip should be chosen based on the thickness of the material being welded plus the welding current, and the type of electrode being used to maximize weld quality.