The flanges on an H beam are typically thicker. This means they can be used for heavier or larger loads than normal. Additionally, I beams' flanges have an inclination which helped to label them as an "I beam". H beams have flattened and leveled flanges.
The tacking fixture is used for assembly of the beam before the Main Welder. The web and the flanges are taken from the seam welder or flange storage racks, and then transported to the tacking fixture. The conveyors can be loaded manually or automatically by an operator using PHI's Flange-loading Gantry.
The upper platform, the columns and walking beams form the frame of the gantry. Each walking beam is controlled by a motor reducer. This creates a double drive system which is reliable and smooth. The platform has rails and racks at the front. These can be used to move the welder arms and tool carriages. You can also place two sets of flux recovery and wire machines on the platform.
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The WS-72 web-seamer station has a Lincoln Power Wave AC/DC welding machine and Max-Sa controls. Unique magnets pull web plates to the copper backing-up bar. Copper back-up bars are designed with a small flux groove that is fixed into an aluminum water-cooled bar.
Beam layout welding doesn't only involve manual welding; an H beam fabrication machine or line can actually work on multiple H-beams simultaneously. It is a flat-laid machine that feeds long uncut plates. It also handles the welding of each individual plate to create the design requested by the client.
A welded beam consists of three individual sections of steel – a web, a top flange and a bottom flange. These segments are merged together with deep fillet welds to create an incredibly robust building material.