Welder World Blog

Archive for June, 2011

Some Aluminum Properties: thermally conductive, tendency for porosity, aluminum oxide on surface, somewhat corrosion resistant.
Things made from aluminum: aircraft structures, electrical connectors, marine hardware and boat props, bicycles, boats, aircraft parts, transmission housings, handrails, truck tool boxes.

Mig welding lesson on importance of stickout and a good welding ground.
A short stickout and a good ground make for better mig welding.

Tig welding overhead is mostly a matter of getting comfortable. A few dry runs and trying different ways of holding the torch and you can settle on a technique that works for you.
Enough amperage. (125 in this vid) Sharp tungsten, good torch angle (about what is shown in the video) and a tight arc …these are the best tips for overhead TIG welding

Walking the cup technique for tig welding works good on pipe but not much else.
For welding aluminum, or thin sheet metal of any type, walking the cup is not the best technique.

How to mig weld overhead using 4 main tips.

1. keep your stickout short

2. set your machine hot just like you would for flat welding

3. use cursive E’s as a mig welding technique

4. use both hands