SPOT RESISTANCE WELDING- TELWIN WELDING TECHNOLOGY
PCP 18 400V code 824043 Column spot welder with movable arms and built-in synchronous control by thyristors. It grants optimum results on different kinds of steel. Characteristics: adjustment of spot welding current (from 20 to 100 %), spot welding time (from 1 to 100 cycles), electrode pressure * pneumatic compressed air control. The model requires water cooling for electrodes and arms.
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PTE 18 400V code 824039 Column spot welder with movable arms and built-in synchronous control by thyristors. It grants optimum results on different kinds of steel. Characteristics: adjustment of spot welding current (from 20 to 100 %), spot welding time (from 1 to 100 cycles), electrode pressure * pedal control with adjustable spring. The model requires water cooling for electrodes and arms.
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ELECTRODES/RODS AND ARMS CONFIGURATION
DIGITAL MODULAR 400 400V code 823017 Microprocessor controlled, spot welding machine. It implements a new Fuzzy logic control system thatsimplifies its use and increases the spot welding quality. Suitable for spot welding of sheets with maximum thickness 2+2mm. Characteristics: automatic regulation of the spot welding current and time according to the material thickness * choice between continuous and pulse operation (suitable for sheets with high yield points - high stress) * arms pressure adjustable from 40 kg to 120 kg (with arms L= 120 mm) * hand-grip made out of thermic isolating material * thermal protection.
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CERTIFIED AUTOMOTIVE INDUSTRY SPOT WELDERS
VOLVO,FORD,IVECO ... - HOMOLOGUE INVERTORSPOTTER 14000
Volvo, Ford and Iveco, three of the most important car and commercial vehicle manufacturers, have officially recognised and appreciated the qualities and characteristics of Inverspotter 14000. This model is now protagonist in a sector characterised by increasingly-more demanding operation standards that require continually higher performances. Approval was obtained following severe tests and accurate laboratory tests, for which Inverspotter 14000 was awarded full marks, confirming brand extensive expertise in researching on and proposing to the market technologically advanced products that best satisfy all the demands of the automotive sector.
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Spot welding (RSW) is a process in which contacting metal surfaces are joined by the heat obtained from resistance to electric current. Work-pieces are held together under pressure exerted by electrodes. Typically the sheets are in the 0.5 to 3 mm (0.020 to 0.12 in) thickness range. The process uses two shaped copper alloy electrodes to concentrate welding current into a small "spot" and to simultaneously clamp the sheets together. Forcing a large current through the spot will melt the metal and form the weld. The attractive feature of spot welding is that a lot of energy can be delivered to the spot in a very short time (approximately ten milliseconds).
That permits the welding to occur without excessive heating of the remainder of the sheet.
The amount of heat (energy) delivered to the spot is determined by the resistance between the electrodes and the magnitude and duration of the current.
The amount of energy is chosen to match the sheet's material properties, its thickness, and type of electrodes. Applying too little energy won't melt the metal or will make a poor weld. Applying too much energy will melt too much metal, eject molten material, and make a hole rather than a weld.Another attractive feature of spot welding is that the energy delivered to the spot can be controlled to produce reliable welds.
That permits the welding to occur without excessive heating of the remainder of the sheet.
The amount of heat (energy) delivered to the spot is determined by the resistance between the electrodes and the magnitude and duration of the current.
The amount of energy is chosen to match the sheet's material properties, its thickness, and type of electrodes. Applying too little energy won't melt the metal or will make a poor weld. Applying too much energy will melt too much metal, eject molten material, and make a hole rather than a weld.Another attractive feature of spot welding is that the energy delivered to the spot can be controlled to produce reliable welds.
ALUCAR 5100 230V code 828069 Power source for capacitor discharge welding of studs of 3 and 4 mm diameter and other accessories, with tip strike. It is suitable for applications in car body shops. It enables welding of studs on non-treated or non oxidized surfaces in steel, stainless steel, galvanized steel, brass and, in particular, aluminium. The welding process is so short that it causes no alteration to the opposing surface even if painted, plastic-coated or galvanized. Complete with gun, earth cable with clamp andaccessories.
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ALUSPOTTER 6100 115-230V code 823049 Power source for capacitor discharge welding of studs of 3 to 8 mm diameter and other accessories, with tip strike. It is suitable for applications in heating systems, installation and maintenance works. It enables welding of studs on non-treated or non oxidized surfaces in steel, stainless steel, galvanized steel, brass and, in particular, aluminium. The welding process is so short that it causes no alteration to the opposing surface even if painted, plastic-coated or galvanized. 115-230V automatic voltage reversal. Complete with gun, earth cable with clamp and accessories.
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DIGITAL CAR PULLER 5000 230V code 828073 Microprocessor controlled, electronic system for repairing of metal sheets fit for applications in car body shops. The digital, multifunction control panel allows the automatic regulation of the spotwelding parameters according to the chosen tool. It is equipped with extractor and the accessories for spot welding of special washers.
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DIGITAL CAR PULLER 5000 400V code 828068 Microprocessor controlled, electronic system for repairing of metal sheets fit for applications in car body shops. The digital, multifunction control panel allows the automatic regulation of the spotwelding parameters according to the chosen tool. It is equipped with extractor and the accessories for spot welding of special washers.
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DIGITAL CAR SPOTTER 5500 230V + ACC. code 823174 Microprocessor controlled, spot-welding machine fit for applications in car body shops. The digital,multifunction control panel allows the automatic regulation of spot welding parameters according to the chosen tool and sheet thickness. It is equipped with the "STUDDER" kit for spot welding of screws, washers, rivets and special washers, sheet warming and upsetting.
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DIGITAL CAR SPOTTER 5500 400V + ACC. code 823044 Microprocessor controlled, spot-welding machine fit for applications in car body shops. The digital,multifunction control panel allows the automatic regulation of spot welding parameters according to the chosen tool and sheet thickness. It is equipped with the "STUDDER" kit for spot welding of screws, washers, rivets and special washers, sheet warming and upsetting.
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Projection welding is a modification of spot welding. In this process, the weld is localized by means of raised sections, or projections, on one or both of the workpieces to be joined. Heat is concentrated at the projections, which permits the welding of heavier sections or the closer spacing of welds. The projections can also serve as a means of positioning the workpieces. Projection welding is often used to weld studs, nuts, and other screw machine parts to metal plate. It is also frequently used to join crossed wires and bars. This is another high-production process, and multiple projection welds can be arranged by suitable designing and jigging.
Spot welding involves three stages; the first of which involves the electrodes being brought to the surface of the metal and applying a slight amount of pressure. The current from the electrodes is then applied briefly after which the current is removed but the electrodes remain in place for the material to cool. Weld times range from 0.01 sec to 0.63 sec depending on the thickness of the metal, the electrode force and the diameter of the electrodes themselves.
The equipment used in the spot welding process consists of tool holders and electrodes. The tool holders function as a mechanism to hold the electrodes firmly in place and also support optional water hoses which cool the electrodes during welding. Tool holding methods include a paddle-type, light duty, universal, and regular offset. The electrodes generally are made of a low resistance alloy, usually copper, and are designed in many different shapes and sizes depending on the application needed.
Spot welding involves three stages; the first of which involves the electrodes being brought to the surface of the metal and applying a slight amount of pressure. The current from the electrodes is then applied briefly after which the current is removed but the electrodes remain in place for the material to cool. Weld times range from 0.01 sec to 0.63 sec depending on the thickness of the metal, the electrode force and the diameter of the electrodes themselves.
The equipment used in the spot welding process consists of tool holders and electrodes. The tool holders function as a mechanism to hold the electrodes firmly in place and also support optional water hoses which cool the electrodes during welding. Tool holding methods include a paddle-type, light duty, universal, and regular offset. The electrodes generally are made of a low resistance alloy, usually copper, and are designed in many different shapes and sizes depending on the application needed.
DIGITAL SPOTTER 7000 230V + ACC. code 823023 Microprocessor controlled, electronic spot-welding machine suitable for use in the car body repair. The digital, multifunction control panel allows the automatic regulation of spot welding parameters according to the chosen tool and sheet thickness. Characteristics: automatic identification of the tool * monitoring of mains voltage* automatic control of the clamp cooling. Equipped with air cooledpneumatic clamp and trolley.
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DIGITAL SPOTTER 7000 400V + ACC. code 823022 Microprocessor controlled, electronic spot-welding machine suitable for use in the car body repair. The digital, multifunction control panel allows the automatic regulation of spot welding parameters according to the chosen tool and sheet thickness. Characteristics: automatic identification of the tool * monitoring of mains voltage* automatic control of the clamp cooling. Equipped with air cooledpneumatic clamp and trolley.
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DIGITAL SPOTTER 9000 400V + ACC. code 823005 Microprocessor controlled, electronic spot-welding machine suitable for use in the car body repair and industrial field. The digital, multifunction control panel allows the automatic regulation of spot welding parameters according to the chosen tool and sheet thickness. Characteristics: automaticidentification of the tool * monitoring of mains voltage * automatic control of the clamp and cable cooling * choice of optimal spot-welding current according to mains power. Equipped with air cooled pneumatic clamp and trolley.
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DIGITAL SPOTTER 9000 R.A. 400V + ACC code 823007 Microprocessor controlled, spot-welding machine suitable for use in the car body repair and industrial field. The digital, multifunction control panel allows the automatic regulation of spot welding parameters according to the chosen tool and sheet thickness. Characteristics: automatic identification of the tool * monitoring of mains voltage * automatic control of the clamp and cable cooling * choice of optimal spot-welding current according to mains power. Equipped with water cooled pneumatic clamp, water cooling system and trolley.
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The two materials being welded together are known as the workpieces and must conduct electricity. The width of the workpieces is limited by the throat length of the welding apparatus and ranges typically from 5 to 50 inches. Workpiece thickness can range from 0.008in. to 1.25in.
After the current is removed from the workpiece, it is cooled via the coolant holes in the center of the electrodes. Both water and a brine solution may be used as coolants in spot welding mechanisms.
The basic spot welder consists of a power supply, an energy storage unit (e.g., a capacitor bank), a switch, a welding transformer, and the welding electrodes. The energy storage element allows the welder to deliver high instantaneous power levels. If the power demands are not high, then the energy storage element isn't needed. The switch causes the stored energy to be dumped into the welding transformer. The welding transformer steps down the voltage and steps up the current. An important feature of the transformer is it reduces the current level that the switch must handle. The welding electrodes are part of the transformer's secondary circuit. There is also a control box that manages the switch and may monitor the welding electrode voltage or current.
MODULAR 20 TI 230V code 823015 Spot welding machine with electronic control of the spot welding time. Suitable for spot welding of sheets with maximum thickness 1+1mm. Characteristics: synchronous electronic timer with spot weldingtime adjustable from 0,1 sec. to 1,2 sec.* arms pressure adjustable from 40 kg to 120 kg (with arms L= 120 mm) * handgrip made out of thermic isolating material.
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DIGITAL MODULAR 230 230V code 823016 Microprocessor controlled, spot welding machine. It implements a new Fuzzy logic control system thatsimplifies its use and increases the spot welding quality. Suitable for spot welding of sheets with maximum thickness 2+2mm. Characteristics: automatic regulation of the spot welding current and time according to the material thickness * choice between continuous and pulse operation (suitable for sheets with high yield points - high stress) * arms pressure adjustable from 40 kg to 120 kg (with arms L= 120 mm) * handgrip made out of thermic isolating material * thermal protectio
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DIGITAL MODULAR 400 400V code 823017 Microprocessor controlled, spot welding machine. It implements a new Fuzzy logic control system thatsimplifies its use and increases the spot welding quality. Suitable for spot welding of sheets with maximum thickness 2+2mm. Characteristics: automatic regulation of the spot welding current and time according to the material thickness * choice between continuous and pulse operation (suitable for sheets with high yield points - high stress) * arms pressure adjustable from 40 kg to 120 kg (with arms L= 120 mm) * handgrip made out of thermic isolating material * thermal protection.
The resistance presented to the welder is complicated.There is the resistance of secondary winding, the cables, and the welding electrodes. There is also the contact resistance between the welding electrodes and the workpiece. There is the resistance of the workpieces, and the contact resistance between the workpieces.
At the beginning of the weld, the contact resistances are usually high, so most of the initial energy will be dissipated there. That heat and the clamping force will soften and smooth out the material at the electrode-material interface and make better contact (that is, lower the contact resistance). Consequently, more electrical energy will go into the workpiece and the junction resistance of the two workpieces. As electrical energy is delivered to the weld and causes the temperature to rise, the electrodes and the workpiece are conducting that heat away. The goal is to apply enough energy so that a portion of material within the spot melts without having the entire spot melt. The perimeter of the spot will conduct away a lot of heat and keep the perimeter at a lower temperature. The interior of the spot has less heat conducted away, so it melts first. If the welding current is applied too long, the entire spot melts, the material runs out or otherwise fails, and the "weld" becomes a hole.
At the beginning of the weld, the contact resistances are usually high, so most of the initial energy will be dissipated there. That heat and the clamping force will soften and smooth out the material at the electrode-material interface and make better contact (that is, lower the contact resistance). Consequently, more electrical energy will go into the workpiece and the junction resistance of the two workpieces. As electrical energy is delivered to the weld and causes the temperature to rise, the electrodes and the workpiece are conducting that heat away. The goal is to apply enough energy so that a portion of material within the spot melts without having the entire spot melt. The perimeter of the spot will conduct away a lot of heat and keep the perimeter at a lower temperature. The interior of the spot has less heat conducted away, so it melts first. If the welding current is applied too long, the entire spot melts, the material runs out or otherwise fails, and the "weld" becomes a hole.
PTE 18 400V code 824039 Column spot welder with movable arms and built-in synchronous control by thyristors. It grants optimum results on different kinds of steel. Characteristics: adjustment of spot welding current (from 20 to 100 %), spot welding time (from 1 to 100 cycles), electrode pressure * pedal control with adjustable spring. The model requires water cooling for electrodes and arms.
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PTE 28 400V code 824041 Column spot welder with movable arms and built-in synchronous control by thyristors. It grants optimum results on different kinds of steel. Characteristics: adjustment of spot welding current (from 20 to 100 %), spot welding time (from 1 to 100 cycles), electrode pressure * pedal control with adjustable spring. The model requires water cooling for electrodes and arms.
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PCP 18 400V code 824043 Column spot welder with movable arms and built-in synchronous control by thyristors. It grants optimum results on different kinds of steel. Characteristics: adjustment of spot welding current (from 20 to 100 %), spot welding time (from 1 to 100 cycles), electrode pressure * pneumatic compressed air control. The model requires water cooling for electrodes and arms.
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PCP 28 400V code 824045 Column spot welder with movable arms and built-in synchronous control by thyristors. It grants optimum results on different kinds of steel. Characteristics: adjustment of spot welding current (from 20 to 100 %), spot welding time (from 1 to 100 cycles), electrode pressure * pneumatic compressed air control. The model requires water cooling for electrodes and arms.
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The voltage needed for welding depends on the resistance of the material to be welded, the sheet thickness and desired size of the nugget. When welding a common combination like 1.0 + 1.0 mm sheet steel, the voltage between the electrodes is only about 1.5 V at the start of the weld but can fall as low as 1 V at the end of the weld. This decrease in voltage results from the reduction in resistance caused by the workpiece melting. The open circuit voltage from the transformer is higher than this, typically in the 5 to 22 volt range.[8]
The resistance of the weld spot changes as it flows and liquefies. Modern welding equipment can monitor and adjust the weld in real-time to ensure a consistent weld. The equipment may seek to control different variables during the weld, such as current, voltage, power, or energy.
Welder sizes range from 5 to 500 kVA.Micro spot welders, used in a variety of industries, can go down to 1.5 kVA or less for precision welding needs.
The resistance of the weld spot changes as it flows and liquefies. Modern welding equipment can monitor and adjust the weld in real-time to ensure a consistent weld. The equipment may seek to control different variables during the weld, such as current, voltage, power, or energy.
Welder sizes range from 5 to 500 kVA.Micro spot welders, used in a variety of industries, can go down to 1.5 kVA or less for precision welding needs.
INVERSPOTTER 10000 400V + ACC. code 823074 Medium frequency, direct current (MFDC) inverter technology, microprocessor controlled resistance (spot) welding machine with air-cooled clamp; suitable for body shop applications and industrial use. It gives excellent results also on high strength steel (HSS) and galvanised metal sheets. The digital, multifunction panel makes it simple to adjust spot-welding parameters automatically according to the chosen tool, the type of material and sheet thickness. Characteristics: 64 standardprogrammes and possibility of 192 customised ones * recognition of inserted tool * monitoring of mains voltage * automatic cooling control of machine, clamp and cables * regulation of approach, slope, welding and holding times * regulation in pulsed welding (pulse number and interval). Complete with air-cooled pneumatic clamp and trolley.
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INVERSPOTTER 12000 400 400V ACC. 450DAN code 823075 Medium frequency, direct current (MFDC) inverter technology, microprocessor controlled resistance (spot) welding machine with water-cooled clamp; suitable for body shop applications and industrial use. It gives excellent results also on high strength steel (HSS) and galvanised metal sheets. The digital, multifunction panel makes it simple to adjust spot-welding parameters automatically according to the chosen tool, the type of material and sheet thickness. Characteristics: 192 standard programmes and possibility of 240 customised ones * recognition of inserted tool * monitoring of mains voltage * automatic cooling control of machine, clamp and cables * regulation ofapproach, slope, welding and holding times * regulation in pulsed welding (pulse number and interval). Complete with water-cooled pneumatic clamp, water cooling unit, trolley and balancer.
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INVERSPOTTER 13000 400V + ACC. code 823076 Medium frequency, direct current (MFDC) inverter technology, microprocessor controlled resistance (spot) welding machine with air-cooled clamp. In comparison with traditional spot-welders, the POWERCLAMP technology (power circuits integrated in the clamp) allows for high spot-welding currents withlow absorption rates (the spot welder operates on mains by 16A fuses), the use of longer (5m) and lighter cables for a better holding and a wider range of action and minimum magnetic fields around the cables. It is particularly suitable for body shop applications and industrial use and gives excellent results also on high strength steel (HSS) and galvanised metal sheets. The digital, multifunction panel makes it simple to adjust spot-welding parameters automatically according to thechosen tool, the type of material and sheet thickness. Characteristics: 64 standard programmes and possibility of 192 customised ones * recognition of inserted tool * monitoring of mains voltage * automatic cooling control of machine, clamp and cables * regulation of approach, slope, welding and holding times * regulation in pulsed welding (pulse number and interval). Complete with air-cooled pneumatic clamp and trolley.
INVERSPOTTER 14000 400V + ACC. code 823077 Medium frequency, direct current (MFDC) inverter technology, microprocessor controlled resistance (spot) welding machine with water-cooled clamp. In comparison with traditional spot-welders, the POWER CLAMP technology (power circuits integrated in the clamp) allows for high spot-welding currents with low absorption rates (the spot welder operates on mains by 16A fuses), the use of longer (5m) and lighter cables for a better holding and a wider range of action and minimum magneticfields around the cables. It is particularly suitable for body shop applications and industrial use and gives excellent results also on high strength steel (HSS)/boron and galvanised metal sheets. Thedigital, multifunction panel makes it simple to adjust spot-welding parameters automatically according to the chosen tool, the type of material and sheet thickness. Users are free to set a multitude of spot-welding programmes by customising all the relative parameters; the programmes and reports they generate can be transferred to a USB pen drive if they need to be printed or viewed on a PC. Automatic pressure monitoring ensures excellent adjustment of the force applied to the clamp electrodes. Characteristics: POWER CLAMP technology * back-lit LCD display * 128 standard programmesand more than 400 customised ones * recognition of inserted tool * monitoring of mains voltage * automatic cooling control of machine, clamp and cables * regulation of approach, slope, welding and holding times * regulation in pulsed welding (pulse number and interval) * automatic/manual regulation of pressure between electrodes. Complete with water-cooled pneumatic clamp and trolley.
SMART INDUCTOR 5000 DELUXE 200-240V+ACC. code 865010 Induction heating system that is an intelligent solution for speeding up and simplifying the removalof glued (windows, rear windows, plastic parts, stickers, glass roofs, interior and exterior trims, etc.) or blocked (bolts, bearings, gears, etc.) parts from vehicles as well as for repairing hail dent. It is particularly suitable for vehicle bodies, and guarantees greatly reduced intervention times. It adjusts its intensity in an intelligent and completely automatic manner (Smart Power) using an innovative AutoCheck microprocessor system. Using the principle of electromagnetic induction, it can transfer a large amount of heat to a specific area (Smart Protection) in just a few seconds. In this way it does not damage glass, rubber, plastic and painted surfaces in the area being worked on, or even in the surrounding areas. For maximum practicality and operator safety, it activates automatically (Smart Activation) near the area in which it has to work. Characteristics: intelligent control with Autocheck system * user-friendly digital panel * automatic and manual mode * activation and correct operation signals * pushbutton control for glass remover and confined-spaceremover * foot control. Supplied complete with glass remover, confined-space remover, pad inductor, metal releaser, levers and wonder pen.
