Pipe pipe butt bottom filling, cover surface argon arc automatic welding equipment

 Pipes are automatically filled, cover surface tig welding

Technical solutions

Scheme number:                          

Demand-side unit (Party A):                             

Supplier unit (Party B):

Contact number (Party B):

Date of production:                      

Automatic tig welding of pipes

Technical solutions

First, the workpiece situation

1. Outer diameter range: F50mm~F250mm

2. Pipe wall thickness: d6 mm-d16mm or more

3. Total length of workpiece: ≤1500mm-12000mm

4. Welding base metal: nickel-based heat-resistant steel

5. Workpiece shape: pipe butt ring seam

2. Technical requirements

3. Equipment description

This equipment is the main process equipment of pipeline automatic bottom welding, which is composed of mobile cross welding frame and track device, workpiece roller conveying and rotating equipment, welding torch, welding power supply, welding control system, and lower feeding frame. TIG automatic base welding method is adopted.

Equipment features:

1) The welding machine adopts TIG+ wire filler welding process.

2) Equipped with Panasonic power supply and supporting control system.

3) The equipment is equipped with remote control box operation unit.

4) The switching of welding method (attitude) adopts manual operation.

5) The equipment layout adopts the integrated mode of the whole machine, which is conducive to the stable operation of the equipment under the condition of low center of gravity.

6) The three-dimensional direction movement adjustment of the equipment welding torch adopts linear guide rail (double-track guide), pneumatic locking.

7) The equipment is equipped with arc pressure tracking, which meets the tracking requirements of the height direction during circumferential seam welding.

Workflow:

1) Automatic bottom welding of weld bead girth seam

    The operator will lift the workpiece that has been spot welded to the conveyor roller table – control the mobile welding frame to the welding point position through manual remote control, press the workpiece (radial compression), adjust the position of the welding torch centering the weld, press the start button to start arc welding, the roller table rotation equipment drives the workpiece rotation (speed and welding parameters can be set in the program interface), and the welding torch is automatically in place for bottom welding. After the welding is completed, the pressing device and the welding torch are automatically lifted, and the welding torch device moves to the next weld position and continues to weld the second weld according to the previous processing procedure until all the weld positions are welded and the operator hangs away from the workpiece.

Welding equipment supply list

Four. The layout and composition of the equipment are as follows

5. Technical description of supporting equipment

5.1. TIG welding power supply (Panasonic Japan).

5.5.ES374 cross carriage

5.6. Wire feeder

5.7. Automatic TIG welding gun

5.8. Three-dimensional wire feed bracket

5.8. PLC automatic welding control system

This controller is the central system that completes the entire process of circumferential seam welding. It adopts a stable and reliable PLC programmable control technology platform.

In the actual production welding process, in order to complete the complex welding tasks of different products, the relevant welding parameters and motion parameters should be matched and implemented through a centralized controller. The controller adopts multi-module centralized control mode, and coordinates and communicates the relevant welding parameters and motion parameters through programming. The controller has the characteristics of simple programming, intuitive interface, convenient maintenance, strong anti-interference ability, considering that the workshop network voltage may fluctuate greatly at any time, so the system controller adopts a larger engineering control cabinet, the cabinet layout ventilation, dustproof, heat dissipation, anti-interference and other functions can achieve stable work, while easy to monitor and maintain. The input voltage of the control cabinet is 380V or 220V 50Hz ±10%, beyond this range it is recommended to increase the regulated power supply. Each functional module and switching element is reasonably installed in the controller through a trunking. A fan is installed on top of the control box to effectively dissipate heat within the chassis. There is a dust-proof partition on the edge of the box, which can effectively isolate the dust on the work site and prevent dust from entering the control box and depositing on the components and causing device failure.

Basic control functions: welding torch or workpiece motion welding speed adjustment and display

Welding current and voltage display

Welding start-stop control

Welding torch arc length and swing control

Wire feed motion control

Welding torch or workpiece position movement jog control

Welding/simulation capabilities

Parameter programming and storage, can store 20 sets of parameters, each set of parameters can be divided into 10 intervals.

Program lock function

Pre-gas time: 0.1~30.0Sec

Gas delay time: 0.1~30.0Sec

DC/pulse current selection

Optional DC/pulse gear, high-frequency arc ignition during the welding process, adjustable pulse frequency, can realize welding stroke setting and automatic attenuation.

Premelting time: 0.01~30S

Premelting current: 5~400A

Peak time: 0.1~1S

Peak current: 5~400A

Base value time: 0.1~1S

Base current: 5~400A

Current increment: 0.1~10A

Attenuation time: 0.1~30S

Closing lap time: 0-30S

Wire feed motion control

Set the wire feeding speed, wire feeding lag time, wire feeding retraction time, and set the increment to modify the welding parameters during the welding process.

Wire feed lag time: 1~999D

Wire feeding speed increment time: 0.01-99.9S

Wire feeding speed: 75~1500mm/min

End position of wire feeding: 1~9999D

Wire feeding extraction time: 0.01~5S

Sideways control

Swing switch: ON～OFF

Sideways lag time: 0.01~60S

Edge residence time: 0.01~8S, left and right side residence time can be adjusted separately

Swing speed: 50~1200mm/min

Sideways offset: 0.1~5mm

Sideways accuracy: ±0.1mm

Arc length control

Automatic arc length control on/off: ON/OFF

Automatic arc lag position: 1~9999D

Arc length voltage: 0.1~15V

Arc length voltage increment: 0.1~9.9V

Sensitivity: Configurable

Arc length control stop position: 1~9999D

The controller can store 20 welding programs

VI. Equipment List:

7. Quality assurance and period: from the date of acceptance, under normal use, the warranty period is one year

VIII. Commissioning and after-sales service commitment:

Equipment installation, commissioning and personnel training are the responsibility of the seller’s professionals to ensure that the buyer’s operators can be proficient and achieve independent production capacity. During the warranty period, if the equipment breaks down or is damaged under normal use, the seller is responsible for repairing it free of charge.

15. Quotation validity period:  days

45. Delivery period: days after the contract takes effect