What is AC Spot Welding Machine
Stationary type spot welding machines are widely used to spot weld two or more overlapping sheet metals or to weld nuts and bolts to sheet metals. Stationary type spot welding machines are mostly foot pedal operated but it can also be dual palm initiated for safety reasons. Dahching welding cylinder.
Benefits of AC Spot Welding Machine
High efficiency
AC welding machines are characterized by high efficiency, which is due to their ability to weld at very high current densities, thus completing welding tasks in a very short time. In addition, AC welding machines also have the ability to start quickly and have high efficiency, which means that you can complete welding tasks in a short time without wasting a lot of time and resources.
Easy to operate
Another advantage of AC welding machines is that they are easy to operate, which is due to the simple and easy-to-understand wiring method and easy-to-adjust welding parameters of the equipment. For users with only basic welding skills, operating AC welding machines is relatively simple, so welders can improve efficiency and quality by quickly getting started.
Low cost
AC welding machines are lower in cost than other types of welding equipment. Therefore, when the cost of purchasing other types of span welding machines is too high to bear, users can choose AC welding machines as a more suitable alternative. This type of equipment is not only affordable, but also has stable performance and is easy to maintain.
Wide applicability
AC welding machines have a wide range of applicability and can be used for welding of various materials, such as steel, aluminum, copper, magnesium alloys and other alloy materials, not limited to small and medium-sized materials. This is one of the reasons why AC welding machines have been widely used.
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Advanced equipment
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Belonging to a welding machine in resistance welding, resistance welding is divided into four forms: welding spot welding, projection welding, butt welding, seam welding. As a result of wide range of applications, the form of direct, so we are accustomed to welding machine collectively. So you ask the spot welding control principle, in fact, is the principle of resistance welding.Resistance welding is a method of welding the workpiece by applying pressure through the electrode and using the resistance heat produced by the current passing through the contact surface of the joint and the adjacent region.The physical essence of resistance welding process, is to use a lot of energy of plastic deformation and resistance to heat and the welding zone itself, so close to the lattice distance form the metal bond between the metal atom two separation performance, to produce a sufficient amount of grain in the combined surface and get the weld joint of solder joints, or. Resistance welding is a welding quality stability, high production efficiency, easy to realize mechanization, automation of the connection method, widely used in automobile, aerospace, electronics, household appliances and other fields.
Uses of AC Welding Machines
Automobile repair
In automobile repair and maintenance, AC welding machines are widely used for welding, repairing and reinforcing car bodies and frames. For example, welding car doors, window frames, etc.
Metallurgical industry
In the metallurgical industry, AC welding machines are mainly used for the manufacture and maintenance of large industrial equipment such as boilers, pressure vessels, pipelines, ships, mines and chemical equipment.
Shipbuilding
In shipbuilding, AC welding machines are mainly used for welding components such as hulls, ship decks, steering devices and platforms.
Construction engineering
In construction engineering, AC welding machines are mainly used for welding structures such as building bridges, cranes, scaffolding and deep foundation supports.
Home repair
In home repair, AC welding machines are mainly used for welding small equipment such as furniture, fences, floor lamps, flower stands, bicycle stands, etc.
AC spot welder with welding, brazing, projection welding, etc., the principle of welding is to convert the industrial frequency alternating current into low voltage, large electric flow through the resistance welding transformer, in the electrode to the workpiece under a certain working pressure for welder. Effective control of welding quality, welding link spatter volume reduction, improve welding quality, the use of integrated welding, strengthen the welding function, bring welding quality inspection data and monitoring integrated modular design, welding automatic control system stability. By the digital integrated manipulation or microcomputer controller to manipulate the conduction angle of the SCR and the length of opening, completed the size of the welding current and the length of opening, electrode pressure on the workpiece by the pneumatic system.
Adopting three-phase balanced load and medium frequency welding technology, no need to add capacitive compensation cabinet. Digital medium frequency welding, energy saving more than 30%, greatly reduce energy cost. Precise control of welding parameters (1MS) enables efficient welding of, multi-layer steel plates/variable thickness ratio steel plates/high tensile steel plates/aluminum alloys. The welding transformer is small in size and weight, in line with the application of industrial robots and integrated welding tongs. HMI operation, user-friendly operating software, saves time and effort.
The power supply is the core component of the AC welding machine. It provides AC power so that the current in the welding process can be output stably. The power supply is usually composed of a transformer, a rectifier and a capacitor. The transformer is mainly used to convert the input voltage into a voltage suitable for welding, the rectifier converts AC power into DC power, and the capacitor is used to smooth the output current.
The transformer is an important part of the AC welding machine. It converts the input voltage into a voltage suitable for welding. The transformer is usually composed of an iron core and a coil. The iron core is used to enhance the magnetic field, and the coil is used to generate electromagnetic induction to achieve voltage conversion.
The rectifier is also an important part of the AC welding machine. It converts AC power into DC power. The rectifier is usually composed of a diode, which can convert AC power into unidirectional DC power, thereby achieving a stable output of current.
The output circuit is a key part of the AC welding machine. It outputs current to the welding point. The output circuit is usually composed of an electrode, a cable and a welding head. The electrode is used to generate an arc, the cable is used to transmit current to the welding point, and the welding head is used to convert current into heat energy to achieve welding.
The structure of the AC welding machine is mainly composed of power supply, transformer, rectifier, capacitor, output circuit, etc. These components cooperate with each other to achieve stable current output during welding, thus ensuring the quality and efficiency of welding.
Maintenance Tips for Spot Welding Machines
Cleaning and maintenance
Clean the surface of the spot welder: Use a cloth or brush to clean the surface of the spot welder to remove the dust and metal powder on the surface.
Clean the inside of the spot welder: Turn off the power first, then open the outer shell of the spot welder, blow away the internal dust with a vacuum cleaner or a hair dryer, and be careful not to clean the internal parts directly with water.
Clean the circuit board: Use a cloth or cotton swab to soak the cleaning fluid, gently wipe the surface of the circuit board, and remove the dust and dirt on the surface.
Replacement of parts
Electrode: The electrode of the spot welder is the most frequently used component and needs to be checked and replaced regularly. When the electrode is severely worn, the electrode needs to be replaced.
Pressure spring: The pressure spring of the spot welder is under great pressure, and it is necessary to check whether the spring elasticity is normal regularly. If it is loose or loses elasticity, the pressure spring needs to be replaced.
Cooling water pipeline: The spot welder needs to continuously cool the electrode during work, so the smoothness of the cooling water pipeline is related to the working efficiency of the equipment. If the cooling water pipeline is blocked or leaking, it needs to be replaced in time.
Other precautions
Keep the area around the equipment dry and clean to prevent the equipment from being corroded by moisture.
Pay attention to grounding to avoid fire accidents caused by poor electrical contact.
Before the equipment is operated, check whether the wiring of each part is loose, whether the plug is connected properly, and check whether the power supply voltage and frequency meet the equipment requirements.
Jiaxiao company develop and produce spot welder controller and spot welding machine since 1992, we're one of the biggest suppliers in China. Spot welders, MFDC welder, variable frequency AC welder, butt welders, seam welders, gun welders, 3 phase welders, micro welders, special application machines are offered here. Our products are widely used in electrical production, auto parts manufacturing, battery production, metal splicing and other fields. With advanced technology, excellent management philosophy, high-quality products, and constantly develop and grow, widely praised by the industry and users. Based on our professional engineer team, rich experience and latest technical, we specialize in fitting your welding requirements to the proper welding equipment.
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We're professional ac spot welding machine manufacturers and suppliers in China, specialized in providing high quality customized products. We warmly welcome you to buy high-grade ac spot welding machine made in China here from our factory.
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