Automotive OEMs love to show off their automated body-in-white assembly lines. Commercials invariably feature dozens of six-axis robots producing showers of sparks in choreographed routines.
Metal-plastic composites (MPCs) have many advantages for producing lightweight structures. They are lighter than steel, yet very strong. They can be shaped using standard cold-forming processes. And, they are less expensive than aluminum alloys.
Kaizen, or continuous improvement, is a basic tenet of lean manufacturing. It says, in effect, that less-than-optimal is never acceptable. The concept can be applied to every major assembly process, including resistance spot welding.
Since 1937, Robert H. Peterson Co. in California has produced Fire Magic gas grills and Real-Fyre gas logs. Over the years, the company has grown steadily and their commitment to quality and craftsmanship has not changed.
Arcs and sparks are commonly used to dramatically depict welding in television commercials, photographs and other images. But in resistance projection welding (RPW), such flashes of light indicate poor welding.
For the past 15 years or so, assemblers have used SPR as an alternative to spot welding, especially when joining aluminum with other materials. The reasons why SPR is preferred are many.