HGZ Heavy Duty Standard Self Adjustable Welding Rotator for Tank
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HGZ Heavy Duty Standard Self Adjustable Welding Rotator for Tank

Quantity:

For self adjustable equipment, tonnage of 200Ton/250Ton and above are classified as heavy duty roller bed.

There is a saying going ”Quantitative change causes qualitative change”. This is true with HGZ heavy duty rolling bed.

 

Technical Specialties of HGZ Heavy duty Turning roll:

   1) Roller material:

Metallic Roller

      - The most conspicuous character with these large welding rotators is its full metallic rollers, instead of

       integrated PU and metal;

     - The reason is, with increasement of workpiece weight, the rubber rollers do not have sufficient holding

       strength to support these workpieces, and hence issue of deformation will happen;

     - Another reason is large workpieces welded on these large weld rotators generally involves large welding

       current, which will do great harm to the PU roller;

     - To be specific, the metallic rollers used in these heavy duty turning roller had better be made of cast steel of

       grade ZG270-500. Although some suppliers adopt the metallic rollers made of welding members for these 

       large turn roller, the cast steel rollers have best quality;

    2) Motion mode: As introduced before, due to its difficulty of hoisting, for heavy duty HGZ, although some are

       stationary turning roller, there are more of the large roller beds of traveling type;

    3) Hoist: of the heavy duty HGZ stationary turning roll, there are hanging hooks on roller beds of these large

      welding rotators. Besides, sometimes special fixtures and spreaders can be used for moving these large weld

      rotators. Please check attached pictures;

    4) Operation manner 

      of Heavy duty Turning roller is same as that of light duty and medium duty:

      - The roller beds of these travelable or stationary turning roll swing by itself after loaded with workpiece, within

        its confinement of designed sway range;

     - Meanwhile, center distance of the rollers is adjusted accordingly, catering for workpiece of various diameter.

       The roller beds give support on the workpiece in stable and smooth manner;

     - Based on diameter of workpiece (Dia. 1.5m ~ 8.5m for heavy duty turning roll), swing angle of the roller beds

       can be manipulated automatically, together with alignment of its gravity center. Worked together with 

       welding manipulator (or called column-boom) and welding power source, both internal and external 

       longitudinal& circumferential seams of welding can be fulfilled;

    5) Another benefit with self-adjustable HGZ product is its large number of rollers. As introduced in the previous

      section of medium size, each set of roller bed has four pieces of rollers, or in other words, eight pieces of 

     rollers with a set of self adjusting equipment. This is especially a strong point with large welding rotator of 

     heavy duty: That with four pairs of rollers in one set of heavy duty roller bed, the pressure subjected with each 

    piece of roller is kept to minimum level, which can avoid the issue of cold work hardening after welding.

 

Below are the specifications of standard HGZ heavy duty Self Adjusting Large Welding Rotator:

Model

HGZ200

HGZ250

Max. loading (T)

200

250

D3 (mm)

2860

3000

Work-piece (mm)

d

1500

1600

D

8000

8500

Roller size

 (mm)

R   PU   roller

D1



W3



Metallic roller (mm)

D2

540

550

W4

100

120

Linear speed (mm/min.)

100 ~ 1000

Motor power(kW)

7.5

7.5

Roller span A (mm)

2960



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