Railway Car Automation Phungjin Industries Corp.

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Keystone plate welding

  • Keystone plate welding

Keystone plate welding

In keystone CO₂ arc welding, the welding wire wound in coil is fed into the welding torch by the feeding motor automatically.

The welding wire that is electrified through the contact tip becomes the electrode to strike an arc between itself and the keystone plate.

The arc heat melts the wire and the base metal to join two pieces of stainless plate, under frame and keystone plate.

In this case, in order that the weld metal will not be affected by oxygen and nitrogen in the atmosphere, CO₂ gas is supplied from the nozzle of the welding torch to shield the weld pool.

Introduction of system

Arc sensor
One travelling & two head system