Welding Techniques and Machinery

Safety

First you need to have the proper equipment. Or else bad things will happen.

Machines

Arc Welder

The advantages of using an Arc Welder is you do not have to worry about your wire getting tangled up. Also you do not have to clean out the tip of the machine. Some disadvantages is you have to chip the slag and the weld does not come out as nice. Make sure the amperage matches the thickness of metal you are welding on. If you need any help see chart below:

Electrode chart

Mig welder

The advantages and disadvantages are the same in arc welder except you switch the data. Make sure the wire speed and the amount of Inert gas you use match. If you need help see chart below:

Mig chart

Oxy-Acetylene Welder

In order here is a how you turn on the machine,use it,turn it off properly.

  1. Determine which tank is the oxygen and which is acetyline
  2. Take the caps off the tanks and put them were you can find them late.
  3. Turn the oxygen cylinder valve all the way open
  4. Open the oxygen cylinder in 1/4 turn
  5. Turn on both torch valves a quarter turn
  6. Light the torch only with lighters that is meant to turn on the torch
  7. Adjust the acetylene torch valve till the flame is not too windy or smoky
  8. Adjust the oxygen torch valve next to blowpipe till the blue tip is next to the blowpipe tip
  9. Lean on workplace to steady yourself during cutting to make a straight cut
  10. Bring torch till the tip is touching the edge of the piece of metal you are cutting
  11. Wait till the metal you are welding is cherry red
  12. Use the oxygen to cut the metal
  13. Turn off the oxygen torch valve next to blowpipe
  14. Turn off the oxygen torch valve next to acetylene torch valve
  15. With one quick turn, turn off the acetylene torch valve
  16. Turn off both tanks all the way
  17. Drain out all the acetylene out of torch
  18. Turn the acetylene and oxygen regulators till they are loose
  19. Put the torch away were it can not be harmed
  20. Chain the tank to the wall

Techniques on how to use the machine in different positions

Arc Welder

Horizontal

First you need to practice striking your ark. Then you weld away from you. As you weld you do not want your electrode to get to close to the metal where it will stick or too far away where it won't burn. Always remember to lean on a table or working area for steadiness. Do not weld too fast to where the pieces are not welded together properly. Or go too slow whereyou are piling up uneeded metal.

Vertical

Vertical is tricky because of the gravity making your metal runny. So all you really got to do is strike your ark. Then weld just like the horizontal. Except welding up. The trick is to get your rod close to the metal without letting it stick. Then you weld extremely tiny circles so that you are pushing your slag up the metal so it is not running off.

Mig Welder

Horizontal

Check to make sure you have a wire speed that matches the electric and the thickness of the metal. Just follow the same steps as arc welder. Except you do not have to strike an arc. When you are done either break off or cut the excess wire.

Vertical

You can weld in a triangle shape or an upside down carrot.

Extra info