Welding Information
Resistance spot welding: A combination of heat and pressure results in the fusion (melting) of two pieces together. The weld area should be as strong as the parent metal.
Advantages over MIG welding:
  1. Labor is less than half the time per weld.
  2. No use of filler metal.
  3. Quality of weld is as good if not better
  4. More cost economical
Weld quality control:
  1. Documentation of weld penetration inspection.
  2. Destruction testing of welds are randomly taken to insure the consistency of each weld.
  3. Periodic recalibration of automatic instrumentation control panels.
  4. Documented material certification to insure uniformity.

Destruction Testing - Cross welded pieces are placed into a pull tension device. The object is to check the weld area after applying tension.

Figure 1: This is a true representation of a good pressure weld. Notice the weld area is intact. The material itself tore before the weld.

Figure 2: This represents poor weld fusion. The weld came apart prior to material failure.

Figure 3: This mig weld broke prior to material failure indicating a lesser life than that of a pressure weld.

All content provided in these pages is copyright Cooley Wire Procducts
and may not be used or reproduced without expressed written consent of Cooley Wire Products Inc.