System for forming metal tubing

Details System for forming metal tubing System for forming metal tubing

1995-11-28

1998-04-14

Bell, Bruce F.

Coating apparatus

With heat exchange, drying, or non-coating gas or vapor...

Plural treatments

118419, 118DIG11, 118DIG12, 228 175, 228 42, B23K 100, B05C 312, C23C 202

Patent

active

057387230

ABSTRACT:
A system is disclosed for forming metal tubing and, more particularly, brake tubing. The system includes a mill for rolling a metal strip into a tube so that at least a portion of the strip overlaps itself. The strip is then brazed so that the overlapping portions of the strip fuse together and form the tube. Thereafter, the tube passes through a cooling tunnel which cools the tube to a temperature such that the tube can be coated with a corrosion resistant material, such as a zinc based material. An inert gas, such as argon, and/or a reducing gas, such as hydrogen, is introduced into the cooling tunnel to prevent or remove oxidation of the tubing as it passes through the cooling tunnel.

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