Welding

What types of welding does Protocase offer?

We offer spot welding (a great option for permanent assembly) and seam welding using Cold Metal Transfer (CMT).

What materials can Protocase weld?

We can weld cold rolled steel, galvanneal, stainless steel, aluminum and copper*.

*Copper is usually brazed.

Do all enclosures have to be welded?

No, not all designs require welding. Many enclosure types, such as our standard U-shape (clamshell), do not.

Does Protocase's 2-3 day turnaround still stand when parts need to be welded?

Yes, both spot welding and seam welding are standard processes that make up our 2-3 day manufacturing lead time.

What is the difference between seam welding and spot welding?

Spot welding is a fast and efficient method for permanently joining two pieces of sheet metal in one or more spots.

Meanwhile, in seam welding, two pieces are clamped securely and welded, and then any excess metal is removed by grinding. The end result is a continuously joined seam.

What is Cold Metal Transfer (CMT) welding and how does it differ from MIG welding?

At Protocase, we use Cold Metal Transfer (CMT) welding. While it appears similar to wire-feed MIG welding, there are differences.

In MIG welding, filler metal transfers via sputtering at very high temperatures.

In CMT, the wire is heated enough to melt the tip, and transfer occurs by physical contact. This method generates just one-tenth of the heat of MIG welding, which prevents warping or melting back, even for thin sheet metal.

Still have questions?