What MIG nozzle do I need?

Conical welding nozzles come in various bore sizes, the most common being ½” and 5/8” (13mm and 15.5mm). When welding zinc or zinc-coated metals, conical welding nozzles are the recommended nozzle shape to use.

Are all MIG nozzles the same?

MIG nozzles direct the shielding gas into the weld puddle and help protect it from contamination. The types of MIG welding nozzles on the market are available in a range of sizes and shapes. Choosing one will depend on what the application is, the welding process that is being used and joint access.

What is a Tweco nozzle?

The Tweco line of welding nozzle parts has some of the longest lasting pieces on the market, combining power and efficiency, these nozzle parts are great for every welding job, no matter how close or far you are from the work. Although most are based on the welder’s welding routine.

What is a welding nozzle?

And Other Burning Questions About Your MIG Nozzles. The purpose for your MIG welding nozzle is pretty straightforward — it’s there to direct the gas into the weld puddle and protect your contact tip from molten metal.

When should I change my MIG contact tip?

If you’ve already noticed changes in the quality of your arcs and the overall weld, then it’s a clear indication that your contact tip must be replaced as soon as possible.

How far should MIG tip stick out?

Keep your wire stickout to 1/4 to 3/8″ (stickout means the distance the wire is extending from the end of the contact tip.) This one simple tip can have the biggest effect on your mig welding. I have gone over this before on other pages but it warrants repeating again and again.

How important is the contact tip in MIG welding?

In a MIG welding process, the contact tip is responsible for transferring the welding current to the wire as it passes through the bore, creating the arc. Optimally, the wire should feed through with minimal resistance while still maintaining electrical contact.

What is better .30 or .35 welding wire?

The 0.035” cored wire offers slightly more welding power, provides a higher heat input into the metal, and better penetration. Compared to the 0.030” this thicker diameter is used in similar environments. But with a higher flux content, it can better withstand windy conditions.