You can do Shielded Metal Arc Welding (stick) with an appropriate electrode. If the machine has a high frequency arc stabilizer then you can also TIG (tungsten inert gas) weld aluminum. Wire feed processes require a DC machine
An AC welding machine is one that uses electrical power from house or shop and has a controlled output in AC or Alternating Current.
Transformer type welding machine
Yes, it is normal for a welding machine to convert AC voltage to a DC voltage.
Transformer type welding machine
rectifyer
any metal
Dc welding can be used for non consumable electrodes with consumable electrode heat is transferred from electrode to work by molten metal. Ac welding is desirable for aluminum and magnesium, because it helps break up oxides AC is more stable than Dc.
Yes it is available
In a welding machine, the rectifier is responsible for converting AC into DC. AC current fluctuates, but DC provides a steady flow, making welding smoother and easier to control. Many welders prefer DC for its stable arc and reduced spatter, which leads to cleaner welds. Some machines even offer both AC and DC options, allowing welders to choose based on the material and type of welding they need to perform.
Can be either, or even selectable.
6010 is intended for DC welding. It has no additives in the covering to keep the arc going each time the AC voltage reverses, so it is very hard to keep the arc struck. The result is usually poor quality welds. The solution is to switch to a rod designed for AC, such as 6013.
A 50 amp welding machine requires a 50 amp welding plug, which is a specific type of electrical outlet designed to handle the high power needs of the machine.