I had a chance to do a review on a Hobart Trek 180 mig machine and I really put it through the ringer. Most welding machine reviews I have read only go so far as running a bead or two. I did that too, but I took it a step further…
Proper Welding Machine set-up is the key to having a smooth weld and at the same time can compensate for a lack of skill. Many welders get so used to using the same machine all of the time they forget how to set one up. I am guilty of this myself. When I work with the same welding machine I get very intimate with the way the machine runs. After a while you just know where to set the machine for what you are going to weld. The key to sound weld quality is know how to set any Portable Welding Machine to run properly. Before getting caught up in welding techniques and other distractions lean how to set any welding machine out there. This is so true when it comes to taking onsite welder qualification tests!
If you use your standard feed rolls you will see that they are shaped with a vee groove in them which is what you want to use if you are using a solid wire. The problem is that if you use the same feed rollers on your softer flux cored wire you will find that the wire gets squashed and this can lead to all sorts of wire feedability issues so to solve this problem you need to use what is called a knurled feed roller. The knurled feed roller has, like, many small teeth in the grove of the feed rollers. These little teeth help to grab the softer wires and give it traction and push it through the whole length of the welding gun.
For tig welding aluminum, set polarity to A/C, A/c balance to around 7, high frequency to continuous. All other machine settings above are same as for tig welding steel.
There are places on the Internet where you can purchase welding supplies and get a good deal for them. The nice thing about the Internet is that there is usually 100% satisfaction guarantee. There are great places like Miller welding supplies and Lincoln welding supplies where you can get your welding materials at a reasonable price. However you need to know what you’re looking for.
You must have seen those alloy wheels that lend a ride that swanky, sporty look. Much as these large diameter alloy wheels look good and improve performance, over time speed and road conditions cause a lot of wear and tear. The cyclical stress is high and the ventilation, disk attachment holes, the flange as well as the rim take a toll. The result? Cracks, dents, bends and scratches all start to show.
Although there are some pretty snazzy modern stick welders out on the pipeline, you’ll also find the Lincoln SA200 Pipeliner. You’ll see some made in the 60s and 50s, and once in a great while, as far back as 1939. Why? The Pipeliner SA200 welders are great machines. Heavy copper windings make for a smooth arc. They are built like a brick porta-potty, so they run and run.
Flux cored arc welding it is not really another welding process. This process is nothing more than a different filler metal or wire used in a MIG welding machine. It is the fastest of the most common welding processes used today. For that reason it is typically used anyplace that needs massive amounts of welds like in shipyards. The metal that it welds best is steel. There are current developments for other alloys and metals but steel is the most widely welded metal with this process.