A. Basic Role of I H Beam SAW Welding Machine for Making H Beam:

1. Position: I H Beam SAW Welding Machine is the primary equipment when making T/ I/ H Beam:

All the remaining machines in I H Beam Production Line:
1) I H Beam Assembly Machine;
2) I H Beam Straightening Machine;
3) I H Beam End Face Milling Machine;
Can be viewed as supporting equipment for SAW I H Beam Welding Machine;
2. Function: I H Beam SAW Welding Machine carries out central process step in making H Beam: The 45° Submerged arc fillet welding, which forms solid welding seam with toe size from 6mm to 12mm and bigger;

3. A piece of large H Beam completed welding in Wuxi JACK LHA5Z I H Beam Gantry SAW Welding Machine: (Fig.1)

4. Same Group of Equipment with LHA Series I H Beam Gantry SAW Welding Machine:

1) LHC model Trolley Moving I H Beam SAW Welding Machine;
2) LHT model T Frame Moving SAW I H Beam Welding Machine.
 

B. Other Types of Working Parts in Gantry SAW Welding Machine:

1. Extended Use: In addition to T/ I/ H Beam in steel structure industry, different sizes of Gantry SAW Welding Machine is also widely used in fabricating other big workpieces;
2. Technical Feature: During work, long length welding along the entire length of working parts is necessary, which is fulfilled with back and forth moving of Gantry SAW Welding Machine main frame;
3. The Typical Workpieces are: Lamp post/ large diameter pipe/ Long length structure members, etc.;
4. Wide Application: This makes Gantry SAW Welding Machine not only used in Steel Structure Industry, but also Municipal Construction/ Petroleum Pipeline/ Pressure Vessel, etc.;
5. Working Nature: In this respect, Gantry SAW Welding Machine is an universal applied general purpose welding equipment;

6. Typical Workpieces to be Welded in Gantry SAW Welding Machine:

1) Lamp Post from LHD Gantry SAW Welding Machine: (Fig.2)

Length 9m~ 16m; Cross section diameter: Φ 300 mm ~ Φ 2500 mm;

2) Oil and Gas Pipeline fabricated from LHG Gy SAW Welding Machine: (Fig.3)

Length 15m; Cross section diameter: Φ 500 mm ~ Φ 1500 mm;

3) Wuxi JACK LHD1500 Gantry SAW Welding Machine works at customer workshop: (Fig.4)

7. Quick understanding on advantages of Wuxi JACK superior product is available in page “Wuxi JACK I H Beam Gantry SAW Welding Machine Slides”.

The Lefthand Scrolling Photos: Components and assemblies composing Wuxi JACK I H Beam SAW Welding Machine

1. Welding Torch Mounting Carriage in SAW I H Beam Welding Machine:

1) Importance: Welding torch and mounting carriage determines reliable and accurate welding positioning in I H Beam SAW Welding Machine;
2) Installation: Welding torch is installed on motor drive moving carriage, which moves along horizontal guiderail on the front horizontal beam of I H Beam Welding Machine;
3) Elevation Function: In addition to X axis, welding torch can also be lifted up and down along the carriage under motor drive;
4) Degree of Freedom: In this way, welding torch in I H Beam Gantry SAW Welding Machine can move in three dimension directions X/Y/Z axis.

2. High Precision Controlling Welding Head in Wuxi JACK I H Beam SAW Welding Machine:

Indicated in the left hand photo,
1) Drive and Transmission: In Wuxi JACK I H Beam Gantry SAW Welding Machine, horizontal movement of mounting carriage and welding torch is driven with manual handle reducer, transmitted with precise gear and rack;
2) Because in I H Beam SAW Welding Machine, SAW welding performs along longitudinal direction of workpiece, not horizontally;
3) Up and down adjusting welding torch is driven with motor reducer, transmitted with precise gear and rack, accommodating varying web heights of H Beam in I H Beam Gantry SAW Welding Machine;
4) Guide: Horizontal and vertical movement of welding torch are guided with precise adjustable eccentric rollers, which are assembled at the front and rear sides of mounting carriage, along the high precision V section guiderails;
5) Performance: These fully guarantee smooth/ steady/ accurate movement of welding head in Wuxi JACK SAW I H Beam Welding Machine during its operation.

1. Outline on LHAZ Series I H Beam SAW Welding Machine:

1) Application: Applied in semi-automatic or manual H Beam Production Line; Or as a single set of welding equipment;
2) Shown in the lefthand photo, operating pendant and SAW control consoles are installed at center point of main frame beam;
3) Operator Position: So, during working of LHAZ gantry moving I H Beam Welding Machine, operator stands at middle position, beneath motor drive moving main frame of the machine, between the two arrays of H Beam supporting racks.

2. Advantages and Disadvantages of LHAZ Middle Operating I H Beam Gantry SAW Welding Machine:

1) Number of Operator: 1 operator for operating and monitoring on working process;

2) Advantage of LHAZ I H Beam SAW Welding Machine:

Labor saving, reduces variable cost;

3) Disadvantages of LHAZ I H Beam SAW Welding Machine:

a) Labor intensity is more intensive than LHAC;
b) For the same specification of H Beam web max. height, LHAZ takes 10% wider workshop area than LHAC.

3. Operating on LHAZ I H Beam Gantry SAW Welding Machine:

1) Output Efficiency: There are 2 sets of welding torch in one set of LHAZ. So, the machine can fulfil SAW welding on two pieces of H Beam simultaneously;
2) H Beam Flipping: With the help of traveling crane or other tool, every piece of H Beam needs to have 4 times 90° flipping, to complete 4 passes of welding seam. This poses certain challenge on operator safety/ working pace, and workpiece protection, during running of the LHAZ I H Beam SAW Welding Machine;
3) Welding Technique: Single Arc/ Twin Arc submerged arc welding, similar to LHC and LHT models SAW I H Beam Welding Machine.

4. 3 Standard Models LHAZ Middle Operating I H Beam Gantry SAW Welding Machine:

1) LHA4Z: For producing T/ I/ H Beam with max. web height 1200mm;
2) LHZ5Z: For producing T/ I/ H Beam with max. web height 1800mm;
3) LHA55Z: For producing T/ I/ H Beam with max. web height 2000mm;
 

5. Technical Parameters of LHAZ Center Operating I H Beam Gantry SAW Welding Machine:

1. Outline on LHAC Lateral Running I H Beam Gantry SAW Welding Machine:

1) Application: Used in semi-automatic or manual H Beam Production Line;
2) 2 sets of Operating Pendants are installed at both ends of mechanical main frame respectively;
3) Operator Position: During working of LHAC gantry moving I H Beam SAW Welding Machine, operators stand at external sides of H Beam supporting rack, 1 people at 1 side, beneath and inside the motorized traveling main body;
4) 2 Arrays of H Beam Holding Racks: Correspondingly, H Beam orientation is also different from LHAZ middle operating.
 

2. Technical Features of LHAC Side Running Gantry SAW I H Beam Welding Machine:

1) Output: 2 groups of welding torch units in 1 set of the machine, delivering 2 pieces of H Beam together;
2) Number of Operator: Two operators, 1 people takes care on 1 piece of H Beam respectively;
3) Technical Features of LHAC side managing I H Beam SAW Welding Machine are same as LHAZ center managing: Welding technique (Large current SAW)/ Productivity (2 pieces simultaneously)/ H Beam handling;
4) Electric Control: There is interlock in electric control system of the machine, so that 2 operators working in pace is 100% guaranteed; No wrong operation happened to the LHAC side control I H Beam Gantry SAW Welding Machine.
 

3. Strong and Weak Points of LHAC Lateral Operating I H Beam Gantry SAW Welding Machine:

1) Positive 1: Compacter Overall Dimension than LHAZ: Occupy less workshop area;
2) Positive 2: Less Stressful Workload than LHAZ: One operator monitors on SAW process of one H Beam only, compared with two pieces in LHAZ center control;
3) Weak Point: Double variable cost compared with LHAZ center management.
 

4. 2 Standard Models of LHAC Lateral Management Gantry Moving I H Beam SAW Welding Machine:

1) LHA4C: For fabricating T/ I/ H Beam with max. web height 1500mm. This is the model with the biggest sell volume I H Beam Welding Machine, developed for HB1500 H Beam Production Line;
2) LHA5C: For fabricating T/ I/ H Beam with max. web height 2000mm, developed for heavy duty HB1800 / HB2000 H Beam Production Line;

5. Technical Parameters of LHAC Lateral Management I H Beam Gantry SAW Welding Machine:

1. Working Scope of LHG / LHD Series Gantry SAW Welding Machine:

1) Tailor Made: This series belongs to special purpose Gantry SAW Welding Machine, one design for one business case. Unlike conventional LHA/ LHC/ LHT series I H Beam SAW Welding Machine, one design being applicable for numerous cases;
2) Flexible Wide Variety Workpieces: Varied design and specifications Gantry SAW Welding Machine, to meet niche demand from small lab use, to large lamp post.

2. Technical Features of LHG/ LHD Special Design Gantry SAW Welding Machine:

1) Overall Dimension: Broad range of overall size, from 1600mm height, fitting for adult people operating level; To 4000mm height welding torch installation, need lateral ladder for access;

2) Welding Torch Degrees of Freedom in Gantry SAW Welding Machine:

To fulfil welding on complicated working parts, such as tapered member, welding torch should be able to being managed:
a) X Axis: Moving leftward and rightward along horizontal front beam of Gantry SAW Welding Machine mechanical main frame;
b) Y Axis: Moving forward and backward along the entire length of long workpieces, by means of box frame main body driven along 15m ~ 20m length parallel rails;
c) Z Axis: Being driven ascending up and descending down.

3. Technical Parameters of Example LHG/ LHD Special Design Gantry SAW Welding Machine: