2 KHZ INVERTER WEDLING POWER SUPPLY
990-057
6-1
CHAPTER 6
ADVANCED WELD FUNCTIONS
Weld Functions
A weld function is a unique heat profile created by weld current, voltage, or power that is applied over a
fixed time period, to resistance weld different parts. Welding applications requiring the use of specialized
weld functions include: (
a
) parts plated with cadmium, tin, zinc, or nickel; (
b
) parts with heavy oxide
coatings such as aluminum; (
c
) parts that are round or not flat; or (
d
) parts made of refractory metals such
as molybdenum or tungsten.
The Power Supply is shipped with ten pre-programmed weld functions that are saved in Weld Schedules
001 through 010. While these factory pre-programmed weld functions do not contain sufficient weld time
or weld energy for most welding applications, they are a useful starting point to begin welding. Please
note that
WELD/REPEAT
will only work with Air Actuated Weld Heads. The table below lists each Weld
Function and its general application.
Weld Function
Pre-Prog
Schedule
Typical Application
BASIC WELD
001
Make single spot welds on simple flat parts without plating.
WELD/REPEAT
002
Make multiple semi-automatic spot welds using an operator.
QUENCH/TEMPER
003
Spot weld flat or round parts that have minimum plating thickness.
PRE/POSTHEAT
004
Forge weld heavily oxidized or refractory parts such as molybdenum or tungsten.
UP/DOWNSLOPE
005
Weld round parts, parts that are not flat, spring steel parts, or heavily plated or
oxidized parts such as aluminum.
BRAZE
006
Reflow two parts together using a braze material.
ROLLSPOT
007
Make automated multiple weld spots using automatic feeders and PLC or host
computer.
SEAM
008
Make automated hermetic seam welds using automatic feeders, and PLC or host
computer control.
Make manual or semi-automatic non-hermetic seam welds using an operator.
DUAL PULSE
009
Use for best control of miniature and small parts spot welding with or without
plating.
PULSATION
010
Use only for spot welding simple parts where the total weld energy or weld time
required to make an acceptable weld using any other Weld Function is marginal.
Using the Pulsation Weld Function can damage the crystal structure of the parts.
