LHZ2030 And HGK5 Cylindrical Body Submerged Arc Welding Center

A. Outline on (LHZ2030 Welding Column and Boom + HGK5 Welding Rotator) as Cylinder Body Workpiece Submerged Arc Welding Center:

1. Function of the Submerged Arc Welding Center:

1) This Welding Center is for carrying out circumferential welding and longitudinal welding on cylindrical working parts, in the mode of SAW (Submerged arc welding);

2) Number of circumferential welding on the finished workpieces from this Welding Center is in the range of 20 to 100 circles;

3) Max. diameter of cylindrical workpieces applicable for this Submerged Arc Welding Center is Φ2000mm, in the length of 3000mm, 5 Ton weight;

2.  Composition of the Submerged Arc Welding Center:

This Welding Center is composed of:

1) One set of LHZ2030 Moving Welding Column and Boom;

2) One set of HGK5 Leadscrew Adjusting Welding Rotator;

3) One set of MZ-1000 Submerged Arc Welding Power Supply, and its control console;

4) Integrated electric Control System of the Welding Manipulator and Welding Roller Bed;

All of the above listed main units are integrated together, to be formed into an integral group of Submerged Arc Welding Center, boosting with convenient operation.

B. Technical Characteristics of the Welding Center with LHZ2030 Welding Column and Boom with HGK5 Welding Rotator:

1.  The LHZ2030 Moving Welding Column and Boom has motor drive trolley base;

2.  Under motor drive, horizontal boom of this Moving Welding Manipulator can be elevated along vertical direction, and moved back and forth along horizontal direction, fulfilling tasks of longitudinal and circumferential welding;

3. Longitudinal Welding with the Moving Welding Manipulator:

The horizontal movement of boom, which is also the welding speed for longitudinal seams on workpieces, is inverter controlled;

4. Circumferential Welding with Cooperation between Welding Column and Boom, and Leadscrew Adjusting Welding Roller Bed:

1) The circumferential welding on cylindrical workpieces should be performed together with running of Welding Rotator: During revolve of workpieces on its Welding Roller Bed, also the revolving linear speed is welding velocity on circumferential welding, which is controlled with inverter;

2) Position of SAW Welding Torch at Welding Column and Boom: (Fig.1)

The submerged arc welding torch of the Welding Center is installed at front end of the horizontal boom of the Welding Manipulator, together with welding seam tracker, control console, and wire feeder: 

3)  Before operation, make adjustment on position of welding torch, to make it aiming at welding seam on the workpieces perfectly, and start on the HGK5 Leadscrew Adjusting Welding Rotator for workpiece rotation. Then the circumferential welding on cylindrical workpieces can be started in the Submerged Arc Welding Center.

C. Structure and Characteristic of LHZ2030 Moving Welding Column and Boom:

1. Overall View on the LHZ2030 Moving Welding Manipulator:

1)  This set of LHZ2030 Moving Welding Column and Boom mainly consists of upright column, horizontal boom, cross saddle and moving trolley, shown as below:

2) Mechanical Structure Sketch on LHZ2030 Moving Welding Manipulator: (Fig.2)

2. Trolley Moving of the LHZ2030 Welding Column and Boom:

1) This Welding Column and Boom is movable trolley type: It has motorized moving trolley, to lead the entire set of Welding Manipulator moving on the railway;

2) The corresponding traveling speed is constant;

3. Column Revolve in the LHZ2030 Moving Welding Manipulator:

1) The upright column of the Moving Welding Column and Boom can be rotated by manual operation;

2) Its revolving transmission is fulfilled by means of high precision slew ring: (Fig.3)

4. Horizontal Boom Transverse Movement in the LHZ2030 Welding Column and Boom:

1) By the transmission of gear and rack couple, the leftward and backward movement of the boom features in high precision and accurate positioning;

2) The adopted gear reducer is produced by professional supplier, of which lubrication is oil immersed enclosed style, eliminating invasion of slag, dirt, particle, thus bringing forth advantages of maintenance free and long life;

3) Mechanisms for Horizontal Boom Movement in the Welding Manipulator: (Fig.4)

5. X and Y Axis Boom Movement Guiderails in the LHZ2030 Welding Manipulator:

1) Rectangle cross section shape rails are used on both upright column and horizontal boom;

2) These high accurate rails are planed and grinded post annealing, guaranteeing stability during welding;

3) The heavy duty high precision guiderails in Welding Column and Boom: (Fig.5)

D. Electric System of the Submerged Arc Welding Center, LHZ2030 Moving Welding Column and Boom, HGK5 Leadscrew Adjusting Welding Rotator:

1. The control system of this Submerged Arc Welding Center is integral style, mainly composed of control cabinet and pendant. See attached and below photos:

2.  Operating pendant of the Moving Welding Manipulator: (Fig.6)

3. The control board inside the control cabinet has contactor, control transformer, inverter, and terminals on it; This unit mainly serves as controlling on/off of motor, performing motions of the Welding Center, and implementing protection of the motor.

4. Operation: By means of the control cabinet and pendant, all the sections of the Submerged Arc Welding Center, Welding Column and Boom, Welding Roller Bed can be operated separately, also various parameters can be adjusted on practical condition, realizing integral control with welding system of the whole Welding Center.

E. Technical Parameters of the LHZ2030 + HGK5 Submerged Arc Welding Center:

1.  LHZ2030 Moving Welding Column and Boom:

2. HGK5 Leadscrew Adjusting Welding Rotator: