General information

The UDGU-302 installation is designed for manual semi-automatic welding with a non-consumable electrode in an inert gas environment of aluminum and its alloys (on alternating current), stainless steels, titanium and copper-nickel alloys (on direct current).
The unit is manufactured for domestic deliveries and for export.

Symbol structure

UDGU-302 X4:
UD - installation for arc welding;
G - in the environment of protective gases;
U - universal;
3 - rated welding current, hundreds of A;
02 - registration number;
X4 - climatic version (UHL, O) and placement category
according to GOST 15150-69.

Operating conditions

Height above sea level is not more than 1000 m.
Ambient temperature from 1 to 35°C for UHL4 version and up to 45°C for O4 version.
Relative air humidity up to 65% at a temperature of 20°C for the UHL4 version and up to 80% at a temperature of 27°C - for the O4 version.
In enclosed spaces with artificially controlled climatic conditions.
Environment non-explosive, not saturated with dust and not containing aggressive gases and vapors in concentrations that destroy metals and insulation.
Cooling water must meet the following requirements:
Hardness not more than 3.566 mg/eq.
Electrical resistance is not less than 2 kOhm/cm 2 .
Insoluble precipitation not more than 0.05 mg/l.
The operation of the installation must be carried out in accordance with the current "Rules technical operation electrical installations", "Safety regulations for the operation of consumer electrical installations" and GOST 12.3.003-86.
The installation complies with the requirements of TU 16-89 IEAZh.683152.007 TU.

Normative and technical document

TU 16-89 IEAZH.683152.007 TU

Specifications

The unit is manufactured to be powered from a three-phase network with a voltage of 380 V, frequency 50 Hz for domestic supplies, voltage 380, 415 V, frequency 50 Hz and 380, 400, 415 and 440 V, frequency 60 Hz - for export supplies.
Rated welding current (effective value), A - 315
Welding current regulation range, A - 10-315
Rated duty cycle (PV), % - 60
The duration of the welding cycle, min - 10
Rated operating voltage, V - 20
Operating voltage regulation range, V - 8-20
XX voltage, V, no more, on: direct current - 100
alternating current - 80
Pulse and pause current regulation range, A - 10-315
Range of regulation of pulse duration and current pause, s - 0.1-9.9
Rated power consumption: power circuit (single-phase), kVA - 25
three-phase circuit, kW - 0.5
External characteristic - Steeply falling
Electrode diameter, mm - 0.8-6
Consumption of protective gas, l / min - 5-10
Cooling water consumption at an inlet pressure of 0.25 MPa, l/h, not less than - 75
The radius of action of the welding torch relative to the power unit, m - 3
The radius of action of the welding torch with the block of connectors relative to the power block, m - 15
Sound level, dBA, no more than - 80
Guarantee period- 1 year from the date of commencement of operation, but not more than 1.5 years from the date of shipment to the consumer.

Design and principle of operation

The unit consists of a power unit, a portable connector block, welding torches, connecting wires and hoses.
The general combined scheme of the installation is shown in fig. one.

The general combined scheme of the UDGU-302 installation:
1 - block of connectors;
2 - welded product;
3 - burner;
4 - power block;
5 - control panel;
6 - reducer with a flow meter;
7 - gas cylinder
The overall dimensions and weight of the components of the installation are given in the table.

Maximum distances between constituent parts settings (lengths of connecting wires and hoses) are:
from the power block to the portable connector block 12 m;
from portable connector block to torch (torch hose) 3 m.
The power unit (Fig. 2) consists of a power transformer, fan, circuit breaker, thyristor unit, equipment and control unit.

General view and overall dimensions of the power unit:
1 - resistor for controlling the time of shielding gas purge after welding;
2 - welding type switch;
3 - switch to turn on the protective gas;
4 - switch to turn on the gas blower;
5 - resistor for regulating the time of gas supply before welding;
6 - resistor for regulating the balance of half-waves of the welding current;
7 - switch of control methods;
8 - block of thyristors;
9 - nipple for entering cooling water;
10 - nipple for inlet of protective gas;
11 - nipple for blowing gas;
12 - connector for connecting the workpiece to be welded;
13 - connector for connecting cooling water to the burner;
14 - connector for shielding gas connection to the burner;
15 - connector for connecting control wires from the "Welding" switch on the burner;
16 - connector for connecting the burner;
17 - nipple for gas outlet after blowing;
18 - nipple for cooling water outlet;
19 - clamp for grounding;
20 - pushbutton switch "Stop";
21 - push-button switch "Start";
22 - block of equipment;
23 - ammeter;
24 - welding current range switch;
25 - signal lamp;
26 - connector for connecting the control circuits of the connector block;
27 - resistors for controlling the welding time of the weld crater;
28 - switch for the duration of the current pulse and pause;
29 - control unit;
30 - resistors for regulating the value of the pulse current and pause;
31 - fan;
32 - power transformer;
33 - automatic switch;
34 - connector for connecting the mains
All components of the power unit are mounted on the base. The block is moved by means of lifting means.
The grounding clamp for the power unit is located on the base.
There is a connector on the rear wall of the unit for connecting the mains supply.
The inclusion of the power unit in the network and its protection against short circuit is carried out by an automatic switch located on the rear wall of the power unit.
Ventilation of the power unit is forced air.
The fan is driven by a three-phase asynchronous electric motor. The correct direction of fan rotation is clockwise (when viewed from the front side of the power unit). In this case, the air must enter from the front side and be ejected from the rear side of the unit.
On the front grille there is an inscription "Air inlet".
Power transformer- single-phase step-down installed on the base.
The thyristor block is designed for switching welding current in different modes, as well as for compensating the constant component.
Blocks of equipment and control are located in the power block on the front side and are connected to the power part of the circuit with connectors.
On the equipment block there are: push-button switches "START" and "STOP", a signal light, an ammeter for measuring the value of welding current and a switch for welding current ranges.
The control unit contains:
resistors for regulating the time of filling the crater of the seam;
switch for pulse duration and current pause;
resistors for regulating the current of the pulse and pause;
welding type switch;
resistor for controlling the time of shielding gas purge after welding;
resistor for regulating the time of gas supply before welding;
resistor for regulating the balance of half-waves of welding current;
control method switch (local or remote);
a switch to turn on the gas blower;
a switch to turn on the protective gas;
connector for connecting the control circuits of the connector block.
The portable block of connectors allows you to bring it as close as possible to the welder.
On the front side of the unit there are connectors for connecting the burner, and on the back side - connectors for connecting the power unit.
The welding torch is intended for welding by a nonconsumable tungsten electrode of the VA-1A brand.
The torch carries out the fixing of the electrode, the supply of protective gas and the supply of welding current and water.
A small burner is used for welding at currents up to 160 A and provides fastening of tungsten electrodes - with a diameter of 0.8; one; 1.2; 1.6; 2;
3 and 4 mm.
The middle torch is used for welding at currents up to 315 A and provides fastening of tungsten electrodes with a diameter of 3; 4; 5 and 6 mm.
Welding at a current greater than the rated current for the burner is unacceptable.
Each burner consists of a body, a handle, a replaceable collet, a back cap, a nozzle, a switch, a power supply, pipes for supplying gas and water, and wires for control from the switch.
The tungsten electrode is inserted from the side of the nozzle and tightened into the collet using the back cap.
The electrical circuit diagram of the installation provides:
automatic time delay for the preliminary supply of shielding gas to the burner and to the blowing device for arc excitation;
shutting off the gas supply to the blower;
automatic switching on of the welding circuit power transformer and exciter after the time required to purge the gas path after the start of gas supply with a time delay setting of up to 5 s;
disconnection of the welding circuit power transformer after a time delay of not more than 1 s if the arc has not been initiated;
disconnection of the welding circuit power transformer after the welding switch is turned off and the welding current gradually drops to the minimum value with the filling of the crater;
automatic shutdown of gas supply after the set time delay from 5 to 20 s after the welding arc stops burning;
compensation of the constant component of the welding current when working on alternating current;
disconnection of the voltage of the XX welding transformer for a time not exceeding 1 s after the opening of the welding circuit;
pulse mode of operation (with two levels of welding current);
the possibility of supplying gas for pre-setting the required flow rate;
Possibility of connection to the machine for welding with non-consumable electrode.
The installation uses a method for regulating the welding current by changing the opening angle of the power thyristors included in the secondary circuit of the welding transformer. At times when the thyristors are closed, the continuity of the welding current is maintained through ballast resistors connected in parallel to the thyristor switch.

Delivery set includes: power unit, connector block * , GR-6 welding torch, AR-40 reducer with argon flow meter, passport in Russian or foreign languages, a set of spare and replaceable parts, accessories according to the list of spare parts and accessories.
Connecting wires, hoses for water and argon, shielding gas cylinder are not included in the scope of delivery.
* Supplied by agreement with the consumer.

Installations for arc welding with a non-consumable electrode in an inert gas environment

UDGU-302 UDG-501-1

All argon arc plants regardless of their size and power, they have a wide range of functionalities that ensure high-quality welding:
- Non-contact excitation of the arc using a high-frequency exciter.
- Smooth regulation of welding current.
- Automatic increase in welding current at the beginning of welding and a smooth decline in welding current at the end (crater filling). The current rise and fall times are continuously adjustable.
- Automatic purge of the gas path before the ignition of the arc and a delay in turning off the gas after the end of welding with the possibility of adjusting their time.
- When welding on alternating current, the following are provided:
- stabilization of welding arc burning;
- regulation of the constant component.

professional argon arc welding non-consumable (tungsten) electrode in production shops and repair services.

UDGU-302
- on direct current of stainless and low-carbon steels, copper-nickel and titanium alloys;
- on alternating current of aluminum and its alloys. When welding with alternating current, the ratio between the positive and negative half-wave of the welding current is regulated. With an increase in the positive half-wave, the cleaning effect is improved, and with an increase in the negative half-wave, the effect of penetration is improved. When the optimal ratio between the half-waves is established, a well-cleaned seam with the necessary penetration is obtained.

UDG-501-1
- Powerful machine for welding aluminum and its alloys on alternating current.

Current stabilization during mains voltage fluctuations is provided in all units of this series (UDG-3010, UDGU-302 and UDG-501-1).

The pulse welding mode is implemented in the UDG-3010 and UDGU-302 units, as well as in the ADM-251 module. During pulse welding, the current automatically changes between high level pulse welding current and low pause level.

The settings are smoothly adjustable:

Connector block

Pulse current value;
- the value of the pause current;
- pulse duration;
- pause duration.

Connection of TIG welding machines is possible for UDGU-302 and UDG-501-1 installations.

The block of connectors, which can be equipped with UDGU-302 and UDG-501-1 units, allows you to significantly increase the distance from the unit to the welding point - 15 m.

Specifications

Options		UDGU-302	UDG-501-1
Supply voltage, 50 Hz
Power consumption, no more
Type of welding current		post/change
Rated welding current (PV)		315 (60%) 250 (100%)	500 (60%) 400 (100%)
Duration of welding cycle
Welding current control range
Pulse welding mode: - pulse current - pause current - pulse duration - pause duration	BUT BUT with with	10 ... 315 10 ... 315 0,1 ... 9,9 0,1 ... 9,9	- - - -
Open circuit voltage, no more		100 post 80 AC
Rated operating voltage
Electrode diameter: - tungsten - piece		0,8 ... 6 -	2 ... 10 -
Argon consumption
Water consumption, not less
Degree of protection		IP22
Weight
Dimensions (LxWxH)
Recommended thicknesses for TIG welding: mild steels stainless steels titanium alloys copper-nickel alloys aluminum and alloys		0,5 ... 10 0,5 ... 10 0,3 ... 4 0,4 ... 5 1,5 ... 5	- - - - 1 ... 10

Installation UDG-161 for argon arc welding.

The UDG-161 unit is designed for argon-arc welding with a non-consumable electrode (TIG mode) at direct current of metals except aluminum and its alloys and for manual arc welding with coated electrodes (MMA mode).
The source of the UDG-161 installation has a wide range of smooth regulation of the welding current. The source has a thyristor adjustment of the welding current.

Installation UDG-180 for argon arc welding.

The UDG-180 unit is designed for argon-arc welding with a non-consumable electrode (TIG mode) on alternating current of aluminum and its alloys and for manual arc welding with coated electrodes (MMA mode).
The source of the installation has a wide range of smooth mechanical regulation of the welding current, provides easy excitation and stable arc burning due to the built-in exciter-stabilizer.
Current adjustment is carried out by mechanical manual movement of the vertical magnetic shunt.

Installation UDGU-251 AC/DC for argon arc welding.

The UDGU-251 AC/DC unit is designed for argon-arc welding with a non-consumable electrode (TIG mode) on direct or alternating current of all metals and for manual arc welding with coated electrodes (MMA mode.
Welding unit UDGU-251 has alternating/direct current (AC/DC) switching. The source of the welding unit UDGU-251 has a thyristor control, a wide range of smooth regulation of the welding current, provides easy excitation and stable arc burning due to the built-in exciter-stabilizer of increased reliability and power.

Professional installation UDGU-302 for welding with a non-consumable electrode in an inert gas environment.

Welding unit UDGU-302 is designed for DC argon-arc welding of stainless and low-carbon steels, copper-nickel and titanium alloys, AC welding of aluminum and its alloys.
Welding unit UDGU-302 provides smooth regulation of the welding current, non-contact arc excitation using a high-frequency exciter.

Installation UDGU-351 AC/DC for argon arc welding.

The UDGU-351 unit is designed for argon-arc welding with a non-consumable electrode (TIG mode) on alternating current of aluminum and its alloys and on direct current of any metals except aluminum, also for manual arc welding with coated electrodes (MMA mode) on direct and alternating current. Welding unit UDGU-351 has alternating/direct current (AC/DC) switching. The source of the welding unit UDGU-351 has thyristor regulation and provides easy excitation and stable arc burning due to the built-in exciter - stabilizer. The presence of adjustments for the initial welding current, the value of the welding current, the gas purge time at the beginning and end of welding, the time of current decay at the end of welding allows you to select optimal mode welding.

Installation UDGU-501 AC/DC for argon arc welding

The UDGU-501AC/DC unit is designed for argon-arc welding with a non-consumable electrode (TIG mode) on alternating current of aluminum and its alloys and for manual arc welding with coated electrodes (MMA mode). There is an alternating/direct current (AC/DC) switch. By special order, a version of the installation with smooth regulation of the increase in welding current is made, a special oscillator is installed to improve the quality of the welded joint and to work on long cables (loop lines) of the burner. The source of the unit has a wide range of smooth regulation of the welding current, provides easy excitation and stable arc burning due to the built-in exciter-stabilizer of increased power.

Installation UDG-501-1: Professional installation for welding with a non-consumable electrode in an inert gas environment:
Installation UDG-501-1 is intended for argon arc welding on alternating current of aluminum and its alloys.
The welding unit UDG-501 provides smooth regulation of the welding current, non-contact arc excitation using a high-frequency exciter.

Offers:

Professional welding machine UDGU-302 for welding with a non-consumable electrode in an inert gas environment:
Welding machine UDGU-302 is designed for DC argon-arc welding of stainless and low-carbon steels, copper-nickel and titanium alloys, AC welding of aluminum and its alloys.
Welding unit UDGU-302 provides smooth regulation of the welding current, non-contact arc excitation using a high-frequency exciter.

When welding on alternating current, the ratio between the positive and negative half-wave of the welding current is regulated. With an increase in the positive half-wave, the cleaning effect improves, and with an increase in the negative half-wave, the effect of penetration improves. When the optimal ratio is established, a well-protected seam with the necessary penetration is obtained.
Welding unit UDGU-302 has an automatic purge of the gas path before the ignition of the arc and a delay in turning off the gas after the end of welding with the help of regulating their time.
High-quality welding allows for automatic increase in welding current at the beginning of welding and a smooth decline in welding current at the end (crater welding).
When welding on alternating current, stabilization of the burning of the arc and regulation of the constant component are provided.

If necessary, order Welding unit UDGU-302. in Moscow low-cost in Equipment for electric arc welding, cutting and surfacing .

The product is offered by a member of the catalog of the electrotechnical portal Proelectro2.ru, CJSC "Concern Promsnabkomplekt" in Moscow. Information will be provided by PromSnabKomplekt by phone (812) 327-86-01 (multi-channel) (812) 777-04-33 (multi-channel) Fax (812) 327-86-56 (multi-channel).

UDG-161 welding machine for argon arc welding

Welding machine UDG-180 for argon-arc weldingThe welding machine UDG-180 is designed for argon-arc welding with a non-consumable electrode (TIG mode) on alternating current of aluminum and its alloys and for manual arc welding with coated electrodes...

Welding machine UDGU-251 AC/DC for argon arc welding. Welding machine UDGU-251 AC/DC is designed for argon-arc welding with a non-consumable electrode (TIG mode) on? direct or alternating current of all metals and? for manual arc welding...

Professional welding machine UDGU-302 for welding with a non-consumable electrode in an inert gas environment: The welding machine UDGU-302 is designed for argon-arc welding on a direct current of stainless and low-carbon steels,...

Welding machine UDGU-351 AC/DC for argon arc welding. Welding machine UDGU-351 is designed for argon-arc welding with a non-consumable electrode (TIG mode) on alternating current of aluminum and its alloys and on direct current of any metals...