Racking sets line density, how many parts are coated per hour, how well each part grounds and how evenly guns can reach it. Good racking spaces parts so they do not shadow each other, puts contact points where marks will not show and keeps parts from swinging into each other. Racks are stripped regularly so cured powder buildup does not cut off the ground.
If we rack these two-high instead of one we double the parts per hour, but the bottom row will be thin.
Also heard as
- rack
- fixturing
- tooling
Related terms
Hooks
The wire hangers that hold parts on the conveyor and carry the ground connection.
Hang
To load parts onto hooks or racks at the start of the line.
Ground
The electrical path from the part through hooks, racks and conveyor to earth that lets charged powder stick.
Line speed
How fast the conveyor moves, in feet per minute, which sets washer time, spray time and oven time all at once.