Contact welding repair. Repair of spotters in Welding-Zone service centers

1. Every 3 months, check whether screw connections are loose or wires are coming loose. If you find a problem, fix it immediately.
2. Check the gas pipe and coolant pipe regularly for leaks. Correct the problem when found.
3. Add oil to the spray arm in time (sewing machine oil is suitable.)
4. Add grease to the cylinder and sliding sleeve every two weeks.
5. Keep resistance welding machines, especially the welding platform, clean.

Common problems and how to fix them

Electrical connection diagram

调 adjustment

welding

Electrical diagram DNB-40A (63A)

DNB-80A

Electrical diagram DNB-80A

Table of elements

Equipment

Machine: 1 piece

Electrode: 3 pcs.

Three parts air system (filter, pressure adjustment and atomization) 1 pc.

Fuse Φ6*30/0.75A 2 pcs.

Instructions (one copy is registered, the second is for operators) 2 copies.

Our service department accepts orders around the clock for the repair of failed spot welding machines in Moscow and the Moscow region. You can make an application on the website or by calling our hotline to our dispatch service. We can send you a specialist for on-site repairs, or you can bring your equipment to one of our service centers yourself. You can also take advantage of free transportation of equipment to and from service.
Free diagnostics, high-quality spotter repairs and a company guarantee provided for all work and installed spare parts will be the key to uninterrupted operation of the equipment in the future.

We offer professional spotter repairs with a long warranty on all work.

We are the largest service company in the Moscow region. Only we have a large warehouse of spare parts, modern equipment, and a network of service centers located in every district of Moscow. I would also like to mention our team of specialists. A complex system for selecting and training service engineers allows us to guarantee our clients the impeccable quality of the work performed and long-term uninterrupted operation of the equipment in the future.
Nevertheless, we try to keep our prices slightly lower than those of our competitors, which, combined with high quality, gives us the most favorable conditions for repairs in Moscow.

The company "LIGA WELDING" specializes not only in the sale of equipment, we also provide diagnostics and repair services for welding machines in Moscow. Inspection of warranty installations is carried out free of charge. Correction of defects and malfunctions identified by a specialist outside the warranty is paid for along with diagnostic work

The following units of domestic and foreign production are subject to warranty and post-warranty adjustment:

• Diesel and gasoline power plants;
• Inverters; welding inverters (MMA, TIG, MIG);
• Welding transformers;
• Air plasma cutting equipment (CUT);

Online application

PRICES for welding machine repairs

Repair of units under warranty

Warranty repairs of welding machines are carried out only if you have a correctly completed warranty card. Welding generators that show signs of external damage or have broken seals are not covered under warranty. Diagnosis and repair of a device breakdown can last from 1 hour or more - it all depends on the degree of complexity of the damage and the need for partial or complete disassembly of the device.

Repair of welding equipment is out of warranty

The repair period and price for inverter welding machines of Russian and foreign production without a warranty card are agreed with the customer after mandatory detailed analysis and diagnostics. The welding machine must be cleaned of dust and dirt. Welding quality after repair of the welding inverter will correspond to a high level.

The most common causes of damage to generators

Statistics, which were formed on the basis of conclusions from the diagnostic results of welding equipment, indicate that the most common causes of defects in their operation are incorrect handling of the unit during operation. It is worth knowing and understanding the following:

• Typically, repairs are required for welding units, in which the established cycle of alternating welding under load and with idle speed is regularly violated. The duration of switching on the unit should not exceed the maximum value specified in the product passport.
• The power of the connected electric generator must exceed the power of the welding installation by at least 2 times. Fluctuations in the network and sudden surges in voltage cause the device to short-circuit.
• Unprofessional handling of the installation, ignoring obvious faults, untimely cleaning and purging - all this has serious consequences and has a negative impact on the final result without timely repair of the welding machine.

Welding machine service

Our company maintains an adequate and loyal pricing policy regarding the repair of welding equipment. For example, the cost of analyzing a device malfunction starts from 900 rubles (disassembly and assembly of equipment is included in the price), and replacing the inverter board starts from 800 rubles.

The main activity of PA SVARTECH LLC is the production, repair, deep modernization and adjustment of spot and seam resistance welding machines, as well as welding cycle and welding current control equipment (resistance spot welding regulators, seam welding controllers, thyristor contactors). Over the years, our company has significantly increased the volume of supplies of spare parts and components for resistance welding machines. The presence of a huge database of drawings allows us to produce spare parts for machines only by the name of the make and year of manufacture of the machine, which greatly simplifies the task of finding spare parts for the Customer. The main consumables, along with electrodes for resistance welding, are electrode holders And trunk welding machine and flexible copper bars.

Equipment for resistance spot welding of reinforcement and masonry mesh.

Resistance spot and butt welding of reinforcement frames is by far the most common method of welding reinforcement frames and mesh. Therefore, this type of welding has become widespread in house-building enterprises for the production of reinforced concrete products and masonry mesh. Resistance welding machines have a number of advantages compared to manual arc welding: high productivity, low cost, etc. There is no need to attract highly qualified workers to operate welding machines.

Contact welding of reinforcement rods is used to obtain a reliable cross-shaped permanent connection by melting the reinforcement rods. To obtain such connections, if it is necessary to weld flat frames, it is possible to use stationary resistance welding machines, and if it is necessary to weld volumetric frames or frames of large dimensions, it is possible to use overhead resistance welding machines with different types of welding jaws.

For welding hard-to-reach places and large reinforcement cages, we offer welding pliers at competitive prices KTP 8-6 , KTP 8-7 , KTP8-1 for overhead resistance welding machines of the type MTP-1110, MTP-1111. These clamps can additionally be equipped with current-carrying cables.

By using innovative technologies, using a modern element base from trusted suppliers and manufacturers, our company has managed to reduce the cost of manufactured products to a minimum, improve their quality and service life. Our development engineers are constantly working to improve and modernize the welding equipment produced. Thus, experience in operating thyristor optocouplers TO-125 installed in the control boards of thyristor contactors KT-07M and KT-11M has shown the unreliability of their operation and frequent failure. It was decided to replace the TO-125 with a pulse transformer, the reliability of which is beyond doubt. Constant monitoring and analysis of the causes of breakdowns of welding equipment allows our company to produce equipment with a very low failure rate.

We guarantee: high-quality assembly, timely delivery, full technical support during setup and operation, warranty and post-warranty service.

In Russia and neighboring countries, there are a huge number of resistance spot welding machines with obsolete electrical (welding cycle regulators, thyristor contactors) and pneumatic parts (pneumatic drives, pneumatic valves, air preparation units) in need of repair or modernization. Our specialists have many years of experience in modernizing and repairing machines of this class.

Repair

Modern industry actively uses welding equipment of various types in its production, from simple foot-operated machines to robotic welding complexes. Different welding principles (alternating current, rectified current, low frequency current), different dimensions (from small machines to huge automatic lines for welding reinforcing mesh), different welding methods are not able to ensure the operation of the equipment without maintenance and repair.

Welding equipment falls into the category of high wear of machine components. Exposure to high temperatures in the welding zone, electromagnetic fields, temperature changes during operation, instability of the supply voltage, poor air quality of the pneumatic system and many other factors lead to the fact that even strong and reliable components and materials may become unsuitable for further operation of the machine. To eliminate possible consequences of negative impacts on equipment, it is necessary to carry out scheduled maintenance and, if necessary, repair of resistance welding machines.

Over time, under the influence of high currents and temperatures, current-carrying parts burn out, and oxidation of current-carrying parts of the machine can also occur, which leads to a decrease in the welding current in the parts and unnecessary load on the transformer and the power supply network. Further operation of the machine may lead to the burning of the welding transformer and, accordingly, to subsequent expensive repairs.

The service center of PO SVARTECH LLC carries out repairs of welding equipment, spot and seam resistance welding machines, control equipment for spot resistance welding machines (resistance welding controllers, thyristor contactors), inverter welding machines, semi-automatic welding machines, etc. Our company has excellent repair equipment and highly qualified performers, which allows us to repair welding equipment in the shortest possible time regardless of the complexity of the breakdown. The presence of a mobile team of adjusters allows us to carry out repairs outside of St. Petersburg.

Service

Maintenance of resistance welding machines is carried out in order to maintain the working condition of welding equipment and additional equipment during operation through periodic technical inspection and additional work. The purpose of maintenance is to prevent possible equipment breakdowns. It is clear that it is much more economically profitable to avoid possible equipment failure than to repair it further. Failure of welding equipment can stop the further process of assembling products, and the cost of equipment downtime can be tens of times higher than the cost of timely maintenance of welding equipment.

Maintenance includes carrying out work on external inspection and checking the operability of all components of resistance spot welding machines and welding machines, performing preventive work (replacing consumables), identifying worn parts and parts in need of immediate replacement.

The work carried out during the maintenance of welding equipment is aimed at timely prevention of possible breakdown, and, consequently, the loss of welding equipment from the production process. As a rule, many faults can be diagnosed at an early stage of their occurrence, which significantly saves the cost of repairing welding equipment.

When servicing resistance spot welding machines, the functionality of the resistance welding regulator, thyristor contactor and pneumatic equipment is checked. The machine is checked for the tightness of the pneumatic system and cooling system. If necessary, necessary repairs are made and recommendations are given for further operation of resistance welding.

Modernization

Over the years, our specialists have accumulated a wealth of experience in modernizing old resistance spot welding machines. After modernization, the customer receives a machine equipped with a modern pneumatic drive and welding cycle control equipment.

During the modernization of resistance spot welding machines, as a rule, the contact welding regulator, thyristor contactor are replaced and the pneumatic drive is modernized (replacement of pneumatic valves, compressed air preparation unit, pneumatic tubes, fittings, etc.).
When upgrading a resistance spot welding machine, an analysis of the technical condition of the machine is carried out, based on the results of which a modernization project is drawn up, taking into account the real tasks of the welding machine and the wishes of the customer.

As a result, a machine that has undergone modernization will have a set of functionality in strict accordance with the wishes and objectives of the customer.