Short answer: Resistance welding passes a concentrated current through overlapped sheet so the contact resistance heats and forges the parts together — spot, seam and projection welding are the backbone of high-speed sheet-metal joining in automotive and appliance lines.
At a Glance
The Resistance Principle
Current flows where the metals touch; the I²R heat at the interface melts a nugget that cools under force. Background in How To Weld Stainless Steel и How To Weld Carbon Steel; compare Metal Tig Vs Mig Welding Guide, Metal Laser Welding Guide и Metal Friction Stir Welding Guide.
Process Choice
Spot welds sheet laps, seam welds leak-tight lines, projection localises force on studs and nuts; prep per Weld Edge Prep Guide and control distortion with Metal Welding Distortion Guide.
QA & Supply
Check nugget size and shunts by Metal Ndt Guide, avoid expulsion per Weld Defects Guide, and document per Mill Test Certificate Guide. HXSCO supplies draw-grade sheet sized for clean spot welding.
Get a Quote
Tell HXSCO your requirements and we will respond with a competitive quote and lead time.
Часто задаваемые вопросы
Joining by passing current through overlapped metal so contact resistance heats and forges it.
Lapping sheet in cars, appliances and enclosures at high speed.
A wheel electrode makes a continuous, often leak-tight weld line.
No — the parts themselves fuse; no wire or gas is added.
HXSCO supplies draw-grade steel and stainless sheet sized for resistance welding.
Source RW-Ready Sheet from HXSCO
HXSCO supplies draw-grade steel and stainless sheet sized for spot, seam and projection welding. Send your alloy and quantity for a quote.