Electro Forged Welding Grating Machine By Dongfang Electromechanical Equipment Co.Ltd.,

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详情

An electroforge (EFG)-welding machine is a dedicated machine used to make steel bar grating from flat steel (bearing bar) and twisted bar (cross bar). It is a key machine in whole steel bar grating production line.

The steel bar gratings manufactured with this equipment meet requirements of such a Standard as YB/T******8 (Chinese Metallurgical Standard), ANSI/NAAMM (MBG *****8) (USA) and BS ********7 (UK).

The EFG - welding machine is classified as single bar type and double- bar type on welding function. Single bar EFG-welding machine means one cross bar is welded at a time, for example type GYH*****1A, being suitable for small scale production. Double bar one means two cross bars are welded at a time. The most of products we provided are double bar type ones.

The EFG - welding machine is also classified as A.C. type and D.C. type on welding power supply. D.C. type means that D.C. power work as welding power supply. It is realized to change A.C. power into D.C. power by means of a rectifier. The welding power of A.C. EFG-welding machine can be supplied in different three methods as below: single phase power supply, *-phase power supply with phase controller, and reverse power supply.

A.C. reverse type is the latest design based on reverse technique. Welding power is from A.C. 3 - phase power supply and then reverse changes to A.C. single phase power supply output through a reverse – controller, and finally goes through a single phase step-down transformer for welding current output. In this way the problem of single power supply for A.C. EFG -welding machine is solved, preventing a power grid from unbalance. Its outstanding advantage is high efficiency and energy preservation. The efficiency can reach up *0% *- *0%, preserving energy 1/3 more than traditional EFG -welding machines. Utilization of reverse technique in welding main circuit design results in efficient increase in power factor of the welding equipment. The power factor for electric power supply can be over 0.9 even without a power factor compensation device. In addition, the reverse circuit is controlled with an embedded computer CPU being simple in structure, reliable in operation, and excellent in anti-interference. Modularized structures are utilized in the whole reverse power supply. Each modular unit generates power output **5KVA. Different numbers of modular units can be assembled to form such sizes of products as **0, **0 and ***0 EFG-welding machines.

The welding main machine, briefly to say, consists of a set of hydraulic press plus such a unit as welding power supply set, conductor row, electrode, electrode seating, combing clamp (bearing bar positioning device), pressing rollers, welding deformation correcting blocks and cooling pipes, etc.

There are following common features for all types of EFG-welding machines:

1) Cross bars (twisted bars) are manually laid and automatically fed.

2) Bearing bars are manually positioned and automatically fed.

3) Steel grating is auto-repeatedly clamped & sent out by dragging device.

4) Switchgear cabinets are equipped with a primary current indicator and a voltmeter.

5) Longitudinal welding distortion is automatically corrected.

6) Both manual mode and automatic mode can be selected in operating console. The operating console is fixed with man-machine interface touching screen and LCD.

7) Welding parameters are set and stored sections in PLC (data never disappear even if power supply is interrupted). Parameters are set with intelligence and indicated with digital display.

8) Linear ball rail is used in steel grating dragging device

Technical parameters depend upon type of EFG –welding machine. Please see Selling Offer for details.