LHA4Z Center Control Gantry Type H Beam Submerged Arc Welding Machine
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LHA4Z Center Control Gantry Type H Beam Submerged Arc Welding Machine

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As explained in previous section, LHAZ stands for center control H Beam Gantry Weld Machine. And the figure “4” in model means it has 4m gantry span. This is the smallest automatic H Beam gantry weld machine in terms of H Beam web height produced (up to 1200mm only).

 

On the contrary, with the same 4m gantry span of side control, the web height can be up to 1500mm. So, for center control gantry style H Beam submerged arc welding machine, it sacrifices size of H Beam to make up for ease of operation --- one less operator compared with LHAC. In this sense, the LHAZ center control sees more application than LHAC side control nowadays.

 

Brief on operating process of automatic gantry type H Beam submerged arc welding machine:

1)  Because each piece of H Beam has 4 seams to be welded, so the welding machine need to perform 4 times of SAW on the H Beam. And because this efficient H Beam gantry weld machine has 2 welding stations, each time it can weld 2 H Beam together;

2)  To fulfil SAW of the 4 seams, the automated H Beam submerged arc welding machine needs to travel back and forth 4 times along its rail:

-   Weld the 1st seam. Along this stroke gantry travel speed is welding speed;

-   At the completion of the 1st seam, the gantry moves backward to its original starting point in high idle speed;

-   The H Beam is turned 90° with travel crane to another welding position;

-   Performs the 2nd seam welding same as the 1st one;

-   The gantry goes back to its starting point again in high idle speed;

-   The H Beam is flipped to its 3rd welding position;

-   The same SAW process for the 3rd and 4th seams

3)  For each SAW seam, the working process of automated H Beam gantry weld machine is:

-   With travel crane, hoist H Beam onto its supporting rack, or change welding position of the H Beam on the rack;

-   Adjust mechanical seam tracing unit;

-    Start on welding power machine

 

Below are specifications of LHA4Z Center Control High Efficiency H Beam Gantry Weld Machine:

Parameter

Specification

Note

Operator   Working Position

Center   of Gantry, between 2 supporting racks

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


H Beam Web   Thickness (mm)

6 ~  32

Can be special made

H Beam Length   (mm)

4000  ~ 15000


Gantry   Span (mm)

4000


Gantry Travel   Rail Length (mm)

18000


 

 


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