Center Control LHA55Z Gantry Type H Beam Welding Machine

The attached photos show a set of newly installed Wuxi JACK LHA55Z model Gantry structure H Beam SAW Welding Machine at application site.

1. Applicating Characteristics of LHA55Z H Beam Gantry Welding Machine: 

Design sketch on LHZ55Z model: (Fig.1)

1) The LHA55Z is the largest model of automatic Gantry structure I Beam Welding Machine. It can weld H Beam with its web up to 2,000mm. So, in the process of H Beam production, the Assembly and Tack welding machine matched with LHA55Z is Z20;

2) While for product model of LHA5Z, the mating Assembly machine is Z15 or Z18, depending on the max. web height to be made;

3) For LHA4Z model machine, it is Z15 (although LHA4Z and Z15 have different max. web height: LHA4Z model outputs H Beam of Max. 1200mm height, while Z15 H Beam Assembly Machine is 1500mm).

2. Notes for Day to Day Operations of Automatic LHAZ I Beam Gantry Welding Machine:

1) Welding mode in LHAZ H Beam Gantry Welding Machine:

a) Submerged arc welding usually utilizes large current of 1000A, 1250A or 1500A (in CO₂ tack welding, it is 350~ 500A), at 45° fillet position of H Beam: 

Perform 45° fillet welding on 2 pieces of H Beam simultaneously with LHA55Z:  (Fig.2)

b) Unlike CO₂ tack weld in Assembly machine, this SAW is not recommended to be performed manually. Which means, for LHAZ series machine, only automatic welding mode is available, no option of manual welding;

2) Welding Speed in LHAZ H I Beam Gantry Welding Machine:

a) As introduced, welding speed is gantry moving speed. It is A.C. inverter control based on demanded welding technology, within the range of 240 ~ 2,400mm/min: 

Operating panel of Wuxi JACK LHA model machine: (Fig.3) 

b) On the operating panel of the LHAZ Gantry structure machine, there is turning knob for welding speed continuous adjustment, and digital display unit for its showing in actual and real time manner;

3) Operator skill for LHAZ Gantry structure H Beam SAW Welding Machine:

a) With automatic welding in this LHAZ automated machine, its operator does not need to command on superb welding skill and rich expertise as in the case of manual welding. However, he or she should grasp welding knowledge and gain welding experience of at least medium level;

b) To be specially, the capability of operator for LHAZ Gantry structure H Beam Submerged Arc Welding Machine:

i.  Manage on SAW welding process with SAW power supply;

ii.  Make judgement on finished SAW quality on H Beam, and take action accordingly:

iii. If ever welding defects happen, how to make ICA repair (Imminent Corrective Action) on the machine with due force;

c) For this reason, if a novice comes to the position of operating the LHAZ series machine, he or she needs to take part in the corresponding training and pass the skill test (qualified), before working on his or her own;

4) Integration of Outsourced units into LHAZ I Beam Gantry Welding Machine:

a) With numerous outsourcing units equipped in this H Beam Gantry Welding Machine,

       i.  Large welding current SAW power supply of two sets;

      ii.  SAW Flux recovery unit of two sets;

     iii.  SAW Wire feeder of two sets;

     iv.  SAW Arc tracing unit of two sets;

b)  The linkage among the abovementioned outsourcing units, and with main equipment of the LHAZ machine, to make it into an integral system, is important for both producer and user;

c) Specifically, in LHAZ H Beam Gantry Welding Machine:

i.  On the one hand, each unit has its own console for manipulation;

ii. On the other hand, electric control system of machine integrates control of these units into its control circuit and feedback loop;

iii.  And on the aspect of operation, operating panel of the LHAZ H Beam SAW Welding Machine has corresponding button or switch to manipulate each of the individual unit;

iv. Manuals of all these outsourcing units will be supplied to customer together with other technical documents, at the time of LHAZ machine delivery and acceptance.

3. Technical Parameters of LHA55Z H Beam Gantry Welding Machine: