Amada 1-288-01, Operation Manual, Page: 49 / 144

CHAPTER 3: SYSTEM CONFIGURATION
HF28 DC RESISTANCE WELDING SYSTEM
990-372 3-17
Section IV. Weld Functions
Welding Applications
Some welding applications require the use of
specialized 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.
An example of a fully programmed weld profile
is shown at the right.
Applications include parts that:

Are plated with cadmium, tin, zinc, or nickel

Have heavy oxide coatings such as aluminum

Are round or not flat
By programming the appropriate weld period time and weld energy amplitudes for the weld period
segments, you can program an appropriate weld schedule profile to perform the above applications.
Typical applications and recommended weld schedule profiles are defined in the table below. For more
information about resistance welding, see
Appendix F, The Basics Of Resistance Welding and Appendix
G, Quality Resistance Welding Solutions, Defining The Optimum Process
Welding Applications
Weld Function Typical Application
Single Pulse Make single spot welds on simple flat parts without plating, or on conductive parts such as
those made of copper or brass.
Up/Downslope Weld round parts, parts that are not flat, spring steel parts, or heavily plated or oxidized parts
such as aluminum.
Dual Pulse Use for best control of miniature and small parts spot welding with or without plating.