- Joined
- Apr 27, 2009
- Messages
- 991
Just a bit more on what the movements do. Most people just make them because they have found a way to make them work. Moving forward, tip angle forward: this makes a wider shallow puddle. It also allows the arc to gouge into the base material and with excessive angle will lower the amount of heat transferred into the base material and will push out excessive spatter.
Side to side: This allows a wider weld.to be deposited. A very important thing to remember is that the puddle is liquid and has surface tension. Side to side movement is best used to move to one side and pause, allow the puddle size to grow and for the puddle to become firmly attached then to repeat on the other side. The side to side movement is just like the plunge line that if you move the same speed all the time that half the time is spent at the ends of the weld. You will also notice that as soon at the puddle has been attached to both sides the surface tension will pull the weld flat. This is very important when doing vertical welds. During vertical welding if side to side motion is a consistent speed the center of the weld will receive the highest amount of heating and make it want to run down.
Tip angle straight down is the highest amount of penitration and the least puddle control.
Tip pointed backwards is less penitration than straight down but more than forward. It is the highest amount of deposited weld and if excessive the weld will be high with poor tie-in at the toe. When done right the arc force will have a downwards pressure on the puddle that will flatten it and give tie-in at weld for.
Sorry for the wall of text. I find it better for one to understand what the movements do than just try to copy a textbook.
Side to side: This allows a wider weld.to be deposited. A very important thing to remember is that the puddle is liquid and has surface tension. Side to side movement is best used to move to one side and pause, allow the puddle size to grow and for the puddle to become firmly attached then to repeat on the other side. The side to side movement is just like the plunge line that if you move the same speed all the time that half the time is spent at the ends of the weld. You will also notice that as soon at the puddle has been attached to both sides the surface tension will pull the weld flat. This is very important when doing vertical welds. During vertical welding if side to side motion is a consistent speed the center of the weld will receive the highest amount of heating and make it want to run down.
Tip angle straight down is the highest amount of penitration and the least puddle control.
Tip pointed backwards is less penitration than straight down but more than forward. It is the highest amount of deposited weld and if excessive the weld will be high with poor tie-in at the toe. When done right the arc force will have a downwards pressure on the puddle that will flatten it and give tie-in at weld for.
Sorry for the wall of text. I find it better for one to understand what the movements do than just try to copy a textbook.