LHC Column Type Automatic H Beam Submerged Arc Welding Machine
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LHC Column Type Automatic H Beam Submerged Arc Welding Machine


Working as one of core equipment in an automatic H Beam production line, the LHC column type is a typical automatic I Beam submerged arc welding machine (I Beam is synonym of H Beam) in terms of:

  1) Machine control and operation;

  2) Workpiece H Beam feeding in, flipping and sending out;

  3) Linkage control with other equipment in the line


Sharing the same SAW welding principle and equipment with LHT and LHA gantry type I Beam submerged arc welding machine, the column type LHC has its obvious uniqueness on the aspect of body structure, and hence quantity of welding unit (one set versus two sets in the case of LHA and LHT T type I Beam submerged arc welding machine), and therefore productivity (one piece of H Beam one time compared with two piece a time of LHA and LHT).

Supplement on LHC column style H Beam submerged arc welding machine:

  1) Control boardof the machine isput inside column of the body, which means it is invisible from outside. This is

      different from LHA and LHT. Such kind of design can make machine body of LHC has plain, open-and-shut 


  2) Rail span of LHC is far less than LHA and LHT (1150mm of LHT versus 4000~ 5500mm of LHA&LHT). This is 

     determined by specialty of its body structure;

  3) Rail length of a set of standard LHC I Beam submerged arc welding machine is 3m shorter than LHA and LHT

     (15m versus 18m), and hence H Beam length (12m versus 15m). Of course, it can be special made;

  4) Linkage control with 90° /180° Overturning rack and conveyor at the front of and back of each set of LHC

     column I Beam submerged arc welding machine is made with pushbuttons/ switches integrated on its 

     operating panel (LHC). This means, working as part of an automatic line, LHC not only has function of control 

     itself, but also that of auxiliary equipment of the line;

  5) Arc-tracing unitis designed and made by ourselves. It is a detecting and tracing unit for managing welding

      process. It is mechanical type, for controlling movement of welding torch in 3-axis(X/Y/Z). Please check below

      picture on its structure.

Arc tracing unit

     Of which,

      -  The vertical direction is pneumatic type (driven with air cylinder);

      -  Horizontal and revolving direction is floating type,

          Making welding torch aiming at welding seam throughout the entire welding process. - When welding seam

          deflects leftward or rightward, arc-tracing rack will adjust automatically along the transverse carriage under 

          action of spring;

      - When welding seam deflects up and down, control roller will adjust welding torch along vertical direction by

         means of air cylinder


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




Operator Working Position

Stand on moving trolley of column body

H Beam Flange Width (mm)

200 ~ 800

H Beam Flange Thickness (mm)

6 ~ 40

Can be special made

H Beam Web Height (mm)

200  ~ 2000

H Beam Web Thickness (mm)

6 ~  32

Can be special made

H Beam Length   (mm)

4000   ~ 12000

Can be special made

Gantry Travel Rail Length (mm)


Can be special made

Rail span


Trolley travel drive mode

Double   drive

Trolley welding travel speed (m/min.)

0.24  ~ 2.4

Controlled with Inverter

Trolley Idle travel speed (m/min.)



Welding unit quantity (Welding power supply, torch, arc tracer, wire feeder)

1   set


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