| 摘要 |
<p>In a flash butt welder for joining strip ends, the improvement for improving the quality of flash butt welds made in specialty grade steels, such as high strength low alloy, as well as for considerably reducing the upset current requirement, by applying a protective atmosphere of combustible gas, such as propane, natural gas, or hydrogen during the flash butt welding process. Welds free from any detectable defects can be made with lower upset current densities thus extending the equipment welding capacity.</p> |
