LHA Gantry Type Automatic H Beam Submerged Arc Welding Machine
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LHA Gantry Type Automatic H Beam Submerged Arc Welding Machine

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The LHA is a kind of fully automatic H Beam gantry weld equipment, integrating manipulation of

  1) SAW Main Machine --- By way of machine operating panel;

  2) 2 sets of SAW power supply --- By way of its own console and machine operating panel;

  3) 2 sets of flux recovery and recycling unit--- By way of machine operating panel;

  4) 2 sets of wire feeder --- By way of machine operating panel;

  5) 2 sets of arc tracing unit --- Mechanical type, no need to have manipulation during welding  

Into a convenient and easy operation, under the condition of, these components are deployed at different section of this large H Beam gantry weld equipment:

  1) SAW power supplies are put on the workshop floor alongside rails, in fixed manner;

  2) Together with its hoppers, flux recovery and recycling units are put on the top side of beam of the gantry, 

     and move along with gantry during welding process;

  3) Wire feeders and arc tracing units are assembled with welding torch, composing into a complete set of welding

     unit, which is fit on the carriage. And each set of the carriage is installed on the beam of the gantry frame, at its

     front side.


To give a clear introduction, please check below picture:

 Location

Control of this LHA gantry type automatic H Beam submerged arc welding machine (also LHC and LHT) is realized with “One Button Starting on and Shutting off machine”. Which means, with the “WELDING ON” button on the operating panel of machine, the machine itself and all the above-mentioned auxiliary units will be started on for work, or shut off for break. Please check attached sketch on machine operating panel for the equipment exported to Russia.

 

Same as LHT, control board of H Beam gantry weld equipment is put on bed of gantry frame, at its lateral side. Please check below picture. It has advantage of concise and short-distance cable routing, as well as playing as counter weight to give double insurance against the gantry frame from toppling down (although this is very low probability).

 Control board

With power line of 380/220V, (this is in China. For other countries it is made with local national regulation) control circuit of this large automatic H Beam gantry weld equipment is powered with AC36V by means of transformer,for safe and reliable commissioning and maintenance. For the same purpose, technical documents of this efficient H Beam gantry weld equipment include:

  1) Electric diagram;

  2) Operator manual, covering content of operation, maintenance and common trouble shooting accumulated with years of experience;

  3) Manual and control diagram of SAW power supply, flux recovery unit, wire feeder, A.C. inverter

 

Below are specifications of this LHA gantry type automated H Beam gantry weld equipment:

Parameter

Specification

Note

Operator Working Position

Beneath   the gantry, at internal sides of supporting racks for LHAZ, and external   sides for LHAC

H Beam Flange Width (mm)

200 ~ 800


H Beam Flange Thickness (mm)

6 ~  40

Can be special made

H Beam Web Height (mm)

200  ~ 1200/1500/1800/2000

Varies on models

H Beam Web Thickness (mm)

6 ~ 32

Can be special made

H Beam Length   (mm)

4000 ~ 15000

Can be special made

Gantry Span (mm)

4000/5000/5500

 Varies on models

Gantry  Travel Rail Length (mm)

18000


SAW  welding speed (mm/min.)

240 ~ 2400

VFD  (Variable Frequency Drive)

Idle  speed (mm/min.)

3200


 

 


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