Effects of Transformer Tap Settings on the Resistance Spot Weldability of Hot-Dipped Galvanized Steel: Nugget Development Studies

Jerry E. Gould; Timothy V. Stotler

doi:10.4271/900739

1990-02-01

Effects of Transformer Tap Settings on the Resistance Spot Weldability of Hot-Dipped Galvanized Steel: Nugget Development Studies 900739

This paper is a continuation of previous work on the effects of tap setting and percent heat on the weldability of galvanized steel. A previous work dealt with changes in current range behavior. This paper considers changes in nugget development. Six separate tap settings were selected for study corresponding to a range of off-times in the current wave form at expulsion. Welds were then made at each tap setting for increasing weld times and sectioned metallographically. It was found that the change in off-time led to significant changes in the morphology, size and rate of weld growth. These results were explained in some degree through changes in the mechanism of resistance heating for various off-times.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Digital $37.00 Print $37.00

Preview Document

We also recommend:

Standards

SAE Mobilus®

Publications

News

Events

Professional Development

A World in Motion (PreK-12)

Participate with SAE

SAE Membership

Donate

Effects of Transformer Tap Settings on the Resistance Spot Weldability of Hot-Dipped Galvanized Steel: Nugget Development Studies 900739

SAE MOBILUS