4f: Welding Position Full

Top View (from above the joint):
   | (Vertical plate)
   |
   |_______ (Horizontal plate – underside is where weld is made)
From the welder's perspective (looking up):

|                                 |
|      Vertical plate             |
|                                 |
|     (Weld here – overhead)      |
|_________________________________| 4f welding position full
Horizontal plate (overhead, above welder)
 Top View (from above the joint): | (Vertical

One of the most interesting aspects of overhead stick welding (SMAW) is how the electrode behaves. | | | Vertical plate | | |

| Process | Suitability | Notes | |---------|-------------|-------| | SMAW (Stick) | Excellent | Most common for 4F; vertical up with E7018 is standard. | | GMAW (MIG) | Good (with pulse or short circuit) | Use vertical up; spray transfer not suitable (too fluid). | | FCAW (Flux Core) | Excellent | Self-shielded or gas-shielded; vertical up preferred. | | GTAW (TIG) | Rare for 4F (except small parts) | Difficult due to gravity; usually vertical up with filler. | | SAW (Submerged Arc) | Not suitable | Cannot be done vertically (flux falls off). |