LHC Column Type Large H Beam Submerged Arc Welding Machine

The attached photos record on the working moment of LHC Column H Beam Welding Machine in H Beam Production Line.

1.     Usage of LHC Column I Beam Gantry Welding Machine:

The LHC column I Beam Submerged Arc Welding Machine is used in heavy duty automatic H Production Line in the form of four sets deployed together, for SAW welding H Beam web width up to 2000mm (currently the biggest in steel structure industry) in automatic way. This is the reason it is named as “large” H Beam Welding Machine. 

(Fig.1)

2.     Process Technology on Welding H Beam with LHC Column I Beam SAW Machine:

As introduced in process technology of H Beam Automatic Production Line, the four sets of LHC H Beam Gantry Welding Machine are divided into two groups:

1)      The first group of two sets work in the first welding area, and the second group of two sets in the second welding area;

2)      The flipping and transport of H Beam among the four sets of the LHC Column H Beam Welding Machine (or, to be more precisely, between the first and second welding areas) is accomplished with 90° and 180° Overturning Rack as well as steel conveyor, without human intervention;

3)      In this way, the four pieces of welding seams on a piece of H Beam can be welded in a stream line with the going through the four sets of LHC I Beam Gantry Welding Machine.

3.     Composition of LHC Column H Beam Welding Machine:

Please check below sketch for part of main components marked (Two sets of LHC are put face to face): (Fig.2)

One set of this LHC Column I Beam SAW Machine is composed of:

1)      Traveling trolley, column, overhang beam, (these three units are assembled as an integral machine body of the LHC Column I Beam Welding Machine);

2)      Transverse Carriage and welding torch, as well as arc tracer and wire feeder installed on the welding torch (This section is installed on the beam of the LHC I Beam Welding Machine body): (Fig.3) 

3)      Motor and travel reducers for driving trolley travel and welding carriage movement respectively;  

4)      SAW Welding power supply, welding flux recovery and recycling unit (one set each) equipped with the LHC H Beam Gantry Welding Machine;

5)      Pneumatic system (for driving arc tracer);

6)      Control system, control board, operating panel, cable drag chain, cable hanging rack of the LHC Column I Beam SAW Machine.

4.     Main Trolley Movement of LHC Column H Beam Welding Machine during Working:

1)      LHC Column H Beam Welding Machine uses moving trolley as its main frame for working. Same as gantry type LHA I Beam Gantry Welding Machine, moving speed of LHC trolley is controlled with A.C. inverter (SAW welding speed) during working: (Fig.4) 

2)      Double drive in Trolley Traveling of LHC Column I Beam SAW Machine:

a)       There are two sets of motors driving gears into revolve by means of two motor reducers, which in turn drive the two pieces of shafts;

b)      In this way, the double drive style of double shafts and four wheels (the wheels are fit at the bottom of the trolley and move along the rail) can avoid crawling issue caused from skidding, making sure the trolley running in stable and reliable manner, during the whole SAW welding process of the LHC Column I Beam SAW Machine;

3)      During SAW welding, trolley travel speed, which is also the SAW welding speed of the LHC Column I Beam SAW Machine, is set with turning knob on the operating panel of the LHC Column I Beam Welding Machine, based on H Beam flange and web thickness to be welded, as well as welding current and voltage of SAW power supply needed, within the range of 0.24~ 2.4m/min (continuous adjusting). This is also true with T style LHT and LHA gantry H Beam Welding Machine also: (Fig.5) 

4)      When not in welding, the trolley travels in idle high speed of 3.2m/min to retreat to its starting point for next round of welding.

5.     Technical Parameters of LHC Column I Beam SAW Machine:

Below are specifications of this automatic LHC Column I Beam Welding Machine: