FAQ

The drawn arc stud welding is a process of union between a metal threaded stud on a metal surface through the use of special equipment that by the welding gun, activates an electric arc which melts the tip of the stud and the surface below creating a weld bath that is contained within a ceramic ferrule.

In the long arc cycle welding the welding stud or pin are welded by an electric discharge that melts the material and the melting bath is contained either in a ceramic ferrule or remains free cooled by an inert gas that is automatically activated inside a protective positioner placed on the gun.

In the short arc cycle welding the electric arc is generated in a time of a few ms, this results in much lower melting material than long arc cycle welding and is mainly used to weld threaded studs up to M8 on thin sheet metal.

At A.T.S. Lamberti we offer a wide range of welding machines suitable for drawn arc welding works such as welding shear connectors used in mechanical carpentry, the long cycle welding studs in shipbuilding. Normally the drawn arc welding machines that supplies A.T.S are used for processing medium-heavy carpentry instead, short cycle stud welding is mainly used in the automotive industry such as welding thin sheets or in difficult positions.

The key elements include a careful cleaning of surfaces, the choosing of the correct equipment that normally A.T.S. advises to the customer, a proper adjustment of welding parameters, and the use of certified drawn arc welding studs.

The portable welding machine offers compact dimensions and easy transportation, allowing you to reach even the most difficult spots. It guarantees high-quality welding in a variety of situations thanks to its practicality.

The built-in electronic timer provides precise control during welding operations. This feature allows efficient adjustment and monitoring of the welding time, contributing to high quality results.

The portable welding machine is suitable for a wide range of sectors. It is a type of equipment that is particularly useful in the construction, manufacturing and industrial sectors. Its versatility and practicality make it suitable for applications on construction sites and in industrial environments.

To ensure optimal performance over time, it is important to perform regular preventive maintenance on the portable welding machine. This includes regular cleaning of external parts and replacement of consumable parts such as electrodes. You must also ensure that you follow the manufacturer's instructions for proper use and safety.

The riveting tool for blind rivet nuts is specially designed for the installation of blind rivet nuts. Its effectiveness is remarkable due to its ability to exert precise force, ensuring the creation of strong and reliable joints. These features make this tool powerful, versatile and suitable for applications requiring a strong and durable assembly.

Riveting tool for blind rivet nuts are designed to install a wide range of blind rivet nuts, including those made of metal, plastic or other materials. This allows flexibility in application depending on project requirements.

The process involves drilling the base material, followed by inserting and securing the threaded insert using the riveting tool. This ensures a stable and secure connection, reducing the risk of damage or breakage over time.

To ensure you choose the right model for your needs, explore our wide range of available riveting tools for blind rivet and blind rivet nuts. Consider factors such as the size of the rivets, the working material and the precision required in installation to find the ideal tool for your specific application.

Spring balancers are designed to balance the weight of tools, equipment or various loads, reducing operator fatigue. This tool is widely used in industrial environments to improve ergonomics and work safety.

Spring balancers utilise an internal mechanical system to counterbalance the weight of the suspended object. When you raise or lower the equipment connected to the balancer, the mechanical system extends or contracts to maintain balance, facilitating the movement of the object.

The use of spring balancers helps to reduce the physical effort required to lift and move heavy loads. This not only improves operator comfort but also reduces the risk of repetitive strain injuries.

When choosing a spring balancer, you need to consider the weight capacity supported, length of rope travel, robust construction and ease of use. Be sure to select a model that fits the specific needs of your working environment to maximise the benefits of using a spring balancer.

Internally threaded studs are characterised by the presence of threads within the bore. This allows them, once welded to capacitor discharges, to be screwed onto screws or threaded shafts, providing a secure connection. They are often used in various industrial and mechanical applications.

Internally threaded nuts are available in a variety of materials. In A.T.S. Lamberti you will find threaded nuts in stainless steel, copper-plated 4.8 steel, aluminium and brass. The choice of material depends on the specific requirements of the application, especially the material in which the item on which the threaded nut will be welded is made.

The automatic machines for blind rivets are electric or pneumatic tools designed for the automatic insertion of blind rivets quickly and accurately.

The automatic machines for blind rivets are used in various industries to assemble components efficiently and robustly, including:

• Automotive: assembly of car components such as bumpers, headlights and dashboards.
• Electronics: assembly of printed circuit boards and electronic components.
• Construction: fastening panels, tiles and other structural elements.

• Productivity: increases assembly speed compared to manual pneumatic riveting machines.
• Accuracy: ensures precise and uniform positioning of rivets.
• Efficiency: reduces machine downtime and production costs.
• Ergonomics and Safety: reduces operator physical effort.

The choice of the automatic machine for blind rivets depends on several factors:

• Type of blind rivet: the machine must be compatible with the type of blind rivet to be used.
• Size of the blind rivet: the machine must have the appropriate pulling force for the diameter of the blind rivet.
• Production volume: the machine must be able to meet the production demand.

It is a 20.0V battery-powered electric tool designed for fast and accurate insertion of blind rivets.

It is ideal for joining different types of materials, such as:

• Metal: sheet metal, profiles, pipes.

• Plastic: panels, components, casings.

• Composite: carbon fibre, fibreglass.

• Mobility: can be used anywhere without the need for power sockets.

• Power: high pulling force for different sizes of blind rivets.

• Ergonomics: light and balanced design for comfortable use.

• Speed: reduces assembly time compared to manual pneumatic riveting machines.

• Blind rivets: aluminium, steel, copper, stainless steel.

• Diameters: 3.2 mm to 6.4 mm.

• Lengths: 6 mm to 20 mm.

They are medium frequency (MF) electric welding machines designed for spot and projection welding of small parts in series. They offer high precision, speed and repeatability.

They are used in various industries such as:

• Automotive: assembly of car components such as bumpers, headlights and dashboards.

• Aerospace: construction of aircraft and aeronautical components.

• Electrical and Electronics: sheet metal welding for the production of components in the electrical and electronics sector. 

• Household appliances: manufacture of washing machines, refrigerators and other household appliances.

• Short welding cycle: fast welding times for efficient production. 

• High quality: precise and strong welds with minimum heat input.

• Low distortion: reduces deformation of welded parts.

• Energy saving: lower energy consumption compared to conventional resistance welders. 

• Ease of use: intuitive and user-friendly interface.

• Power: 16kVA to 150kVA. Frequency: 1 kHz to 10 kHz.

• Pressure force: 1000N to 5000N.

• Dimensions: variable depending on model.

• Features: digital control, electric foot pedal, water cooling.

Resistance welding is a welding process that uses the heat generated by the electrical resistance of the material to be welded to create a permanent joint.

Resistance welding is used in various industries to join:

• Metal components: tubes, sheets, profiles.

• Steel parts: automotive, household appliances, metal carpentry. 

• Electrical wires: cables, printed circuit boards.

• Efficiency: fast and automated process.

• Accuracy: precise and repeatable welds.

• Quality: strong and durable joints.

• Versatility: applicable to different types of metals and geometries.

• Safety: safe process with minimal fume emissions.

• Workpiece positioning: the workpieces to be welded are positioned between two copper alloy electrodes. 

• Generation of current: an electric current is applied to the welding electrodes.

• Welding: the resistance of the material generates heat which melts the workpieces.

• Cooling: the welded parts are cooled to ensure their strength.

Copper alloy electrodes provide the necessary strength to withstand the pressure during welding, ensuring an even current flow and efficient resistance welding.

Our welding electrodes are made of copper alloy: we supply copper alloy electrodes defined as 'standard' and offering good electrical and thermal conductivity, we can supply copper alloy electrodes to customer specifications.

The choice of welding electrode depends on several factors:

• Material to be welded: it is essential to use a copper alloy electrode compatible with the material to be welded.

• Sheet metal thickness: the thickness of the sheet metal determines the diameter of the electrode to be used and the geometry of the electrode tip.

• Type and position of welding: resistance welding of the workpiece sometimes requires different electrode characteristics depending on the positioning of the welding spot to be welded.

The choice of electrode depends on several factors, including:

• The type of material to be welded: copper, steel, aluminium, etc.

• The thickness of the material to be welded.

• The type of welding machine used: spot or roller.

• The geometry of the piece to be welded.

• The desired specifications for the weld: strength, durability, aesthetics, etc.

For an optimal choice, it is advisable to consult the data sheet of the material to be welded and the instructions of the welding machine. In case of doubt, it is advisable to contact a
welding expert.

Copper alloy electrodes offer several advantages over other types of electrodes, including:

• High electrical and thermal conductivity: they ensure rapid heating and uniform welding.

• Good wear resistance: they allow long life and a high number of welds.

• Versatility: they are available in different shapes and sizes to meet the needs of any weld.

The following tips are recommended when using welding electrodes:

• Clean the contact surfaces thoroughly before welding to ensure good electrical conductivity.

• Check electrode clamping force for even pressure distribution.

• Monitor the welding temperature to avoid overheating and defects.

• Clean electrodes regularly from welding slag to maintain good efficiency.

• Use original replacement electrodes to ensure optimum performance and safety.

A self-clinching nut, also known as a self-locking nut, is a type of nut that has an integrated locking system that prevents the nut from loosening during vibration or stress.

ATSS self clinching nuts are available in different material versions:

• Galvanised steel: the ATSS self-clinching nut

• Stainless steel 300 series: the self-clinching nut ATSCS

• Stainless steel 400 series: the self-clinching nut ATSSP4

• Aluminium: the self-clinching nut ATSCLA

The ATSS self clinching nut is easily installed by pressure using:

• Pneumatic press for self-clinching threaded inserts

• Hydraulic press for self-clinching threaded inserts

The threaded studs type PT for capacitor discharge welding are a type of threaded studs used to attach components to sheet metal by capacitor discharge welding. This welding process creates strong, watertight joints with an excellent aesthetic result.

The threaded stud type PT for capacitor discharge welding offer several advantages over other fastening methods, including:

• Durable and watertight fastening: ideal for applications in harsh environments.

• Excellent aesthetic finish: the welding process leaves no visible marks.

• Easy installation: Capacitor discharge welding is a quick and simple process.

• Wide range of materials: threaded welding studs are available in different materials to meet the needs of any application.

A.T.S. Lamberti supplies threaded studs for capacitor discharge welding made of the following materials:

• 4.8 steel

• Stainless steel A2-50 and 316

• Aluminium AlMg3

• Brass CuZn37

A resistance welder for sheet metal is a resistance welder used to join two or more sheets by spot welding.

Spot welding is a welding process that creates a permanent joint between sheets by fusing the material at specific points.

The resistance welder for sheet metal works by passing a high electric current through two electrodes that come into contact with the sheets.

The electric current generates heat that melts the sheet material at specific points, creating a permanent joint.

The choice of resistance welder for sheet metal depends on several factors, including:

• The thickness of the sheets to be welded

• The type of material to be welded

• The amount of welding to be done

For an optimal choice, it is advisable to consult a welding expert.

The hexagonal blind rivet nuts are a type of rivet nut with an internal thread and a hexagonal head.

It is used to create a strong thread in materials such as sheet metal, plastic or wood.

There are two main types of hexagonal blind rivets nuts:

• With cylindrical head: these rivet nuts have a round head which is above the surface of the material.

• With reduced head: these rivet nuts have a smaller head that is flush with the surface of the material.

The hexagonal blind rivet nuts offer several advantages over other types of fasteners, including:

• Quick and easy installation: no tapping tools are required.

• Tough threading: hexagonal blind rivet nuts are able to withstand high loads.

• Wide range of applications: hexagonal blind rivet nuts can be used with different types of materials.

• Economical solution: hexagonal blind rivet nuts are an economical alternative to other types of fasteners.

Blind rivet nuts for aluminium are a quick fastening system for creating strong threads on thin aluminium sheets, even those already painted.
They are available in different types, such as:

• Hexagonal threaded insert: offers a larger bearing surface for greater tear resistance.

• Cylindrical blind rivet nut: ideal for applications where a more compact profile is required.

• Semi-hexagonal blind rivet nut: a versatile solution that combines the advantages of the two previous types.

Blind rivet nuts for aluminium offer several advantages over other fastening methods, such as:

• Ease of installation: they can be installed quickly and easily using a dedicated riveting machine.

• Versatility: suitable for a wide range of thin aluminium sheets.

• Strength: they create strong threads that can withstand high loads.

• Reliability: provide a secure hold even under conditions of vibration and stress.

• Aesthetics: offer a clean, professional finish.

The installation of blind rivet nuts for aluminium is simple and requires only a few steps:

1. Drill a hole in the aluminium sheet of the correct diameter for the chosen blind rivet nuts.

2. Insert the blind rivet nut into the hole.

3. Use a dedicated riveting machine to install the blind rivet nut into the sheet.

For more information on blind rivet nuts for aluminium, contact A.T.S. Lamberti.

A Tecna balancer is a device that helps balance the weight of a load, reducing the physical effort of the operator.

This improves workplace ergonomics and reduces fatigue and the risk of injury.

A.T.S. Lamberti offers a wide range of Tecna balancers with different features, including:

• Capacity: from 0.2 kg to 180 Kg

• Rope travel: up to 3 m

• Rope material: stainless steel

The advantages of using a Tecna Balancer include:

• Reduced physical exertion: the balancer helps to support the weight of the load, reducing the physical exertion of the operator.

• Improved ergonomics: an ergonomic workplace can reduce fatigue and the risk of injury.

• Increased productivity: operators who are not fatigued can work more efficiently and productively.

• Increased safety: reduced physical exertion can help prevent occupational accidents.

Choosing the right Tecna balancer depends on a number of factors, including:

• The weight of the load

• The type of work

• The working environment

• Operator preferences

Tecna electric spot welders are spot welders used to join thin metal sheets. They are particularly suitable for auto body, repair and light production in industry and crafts.

A.T.S. Lamberti offers three types of Tecna electric spot welders:

• Tecna hand portable spot welder 7900_2kVA: this is the lightest and most compact spot welder, ideal for occasional work and in confined spaces.

• Tecna hand portable spot welder 7902_2.5kVA: this spot welder is more powerful than the 7900 and has phase control for delicate work.

• Tecna hand portable cooled portable spot welder 7903_6kVA: this is the most powerful and versatile spot welder, ideal for intensive and high cadence work.

Tecna electric spot welders work using the principle of electrical resistance. The sheets to be welded are placed between the two electrodes of the spot welder and an electric current is passed between them. The current generates heat that melts the metal of the sheets, thus creating a joint.

The advantages of using a Tecna electric spot welder include:

• Precise and uniform welds

• Possibility of welding thin sheets

• Ease of use

• Portability

• Safety and reliability

Electrical resistance welding is a process of joining metals using heat generated by the electrical resistance of the material itself. The parts to be joined are placed in contact with each other and passed through by an electric current. The passage of current generates heat that melts the metal in the contact zone, thus creating a permanent joint.

Electrical resistance welding offers several advantages over other welding methods, including:

• High joint strength and reliability

• High production speed

• Low heat input

• Clean and slag-free process

• Possibility of welding different metals

   

Electric resistance welding is used in a wide range of industrial applications, including:

• Auto Body

• Household appliances

• Metal construction

• Railway industry

• Electronics manufacturing

Tecna bench spot and projection welders are robust and reliable welders designed for electric resistance welding of sheet metal. They have the following features:

• Rated power at 50% continuous current from 16kVA to 150kVA

• Microprocessor control with direct reading of welding current

• Heavy-duty, long-life chrome-plated steel cylinder and rod

• Pneumatic components requiring no lubrication

• Key-operated double stroke cylinder

• Regular compressed air filter unit included in the machine

• Two-stage electric foot pedal

• Welding transformer, plates, electrode holder and water-cooled copper alloy electrodes

• Synchronous control with water-cooled SCR and protection thermostat

• Two-hand control with timer for maximum safety

Ensat threaded inserts are a type of self-tapping fastener used to create strong threads in soft materials such as light alloys, plastics, machining and synthetics. They differ from traditional screws in that they do not require prior tapping of the hole.

Ensat threaded inserts are screwed into the existing hole using hand or machine tools. Their sharp threads and bayonet design allow a strong thread to be created inside the hole, without the need for a separate tapping operation.

Ensat threaded inserts offer several advantages over other fixing methods, including:

• Ease of installation: no prior tapping is required, simplifying and speeding up the assembly process.

• Versatility: suitable for a wide range of soft materials, such as light alloys, plastics and resins.

• Strength: create robust threads that can withstand high loads.

• Reliability: provide a secure hold even under vibration and stress conditions.

• Aesthetic finish: they offer a clean, professional appearance

Ensat threaded inserts are used in a wide range of applications, including:

• Household appliances

• Motor vehicles

• Construction

• Electronics

Self-clinching studs are threaded inserts that, once inserted into a correct hole in the sheet and adequate pressure applied, provide a high-strength mechanical fixation.

The main advantages include:

• High-strength mechanical fixing.

• Quick and easy installation.

• No welding or heat required.

• Availability in different types and materials.

A.T.S. Lamberti offers a wide range of self-clinching studs including:

• Self-clinching pressure studs

• Self-clinching pressure nuts

• Self-clinching pressure spacers

• Self clinching pressure standoffs

• Self-clinching pressure flush head pins

• Self-clinching pressure standoffs for printed circuit board

A.T.S. Lamberti supplies self-clinching studs in:

• Galvanised steel

• Stainless steel 303

• Stainless steel 400

Self clinching studs are commonly used in industrial applications where reliable and strong fastening on thin sheet metal is required, such as in electronic equipment manufacturing, automotive, and metal construction.

A capacitive discharge welder is a device that uses energy stored in capacitors to perform welding. This technology enables precise, high-quality welds to be made on various materials and thicknesses using weld studs and other fasteners.

A.T.S. Lamberti offers a wide range of capacitive discharge welders, including:

- Low power manual welders
- Semi-automatic capacitive discharge welding systems
- Automatic capacitive discharge welding systems equipped with microprocessors with inverter technology

The main advantages include:

- Allows studs or internal threaded studs to be welded onto thin sheets without drilling or deforming them.
- Provides high mechanical resistance to pulling, tearing and vibration.
- Fast welding process with short cycle times.
- Low energy consumption.

In general, capacitive discharge welders are an efficient, versatile and safe solution for welding metal studs and inserts on a wide range of materials.

The Power Package is an innovative solution from A.T.S. Lamberti that allows individual capacitive discharge welders to be connected to a powerful unit, thereby improving the efficiency and performance of the welding system.

Capacitive discharge welders can weld studs and other fasteners in a variety of materials, including coppered 4.8 steel, A2-50 steel, AISI 316 steel, AllMg3 aluminium, CuZn37 brass, ensuring strong and durable welding.

The PRO-I 2800 inverter arc welder can weld stud with a diameter (Ø) up to 25 mm, ideal for high-strength industrial applications.

The GD 12sc gun offers a 0 to 2.5 mm stroke adjustment, allowing fast and precise setup depending on the stud type and welding conditions.

Yes, an optional displacement measuring system is available to monitor key parameters such as stroke, penetration depth, and speed, improving overall welding quality control.

Yes, the ATSRL860 is designed as a cordless alternative, removing the need for air compressors and hoses while increasing operational flexibility.

It is suitable for threaded inserts on steel, aluminum, and composite materials, ensuring consistent and precise fastening.

It reduces setup time, improves operator ergonomics, and increases production continuity without fixed workstation limitations.

The ATSRL4000SV oleo-pneumatic riveter is designed to work with blind rivets from Ø 2.4 to Ø 4.0 mm, compatible with materials such as aluminum, steel and, in some applications, stainless steel.

It is an ideal solution for those looking for a versatile professional pneumatic riveter for industrial and craft applications.

The ATSRL4000SV weighs only 1.12 kg, making it a lightweight professional riveter ideal for prolonged use. The reduced weight helps decrease operator fatigue and improves efficiency in daily operations.

No, this blind rivet gun is designed to require low maintenance.

Main operations, such as replacing the jaws and cleaning the suction system, can be performed manually without tools, reducing downtime.

A hydro-pneumatic riveter like the ATSRL4000MV ensures greater pulling force, faster operation, and more consistent fastening compared to manual or electric models. It is particularly suitable for intensive use in industrial and workshop environments, where reducing operator effort and increasing productivity while maintaining high precision is essential.

Yes, the ATSRL4000MV is designed as a compact industrial riveter for continuous use. Its lightweight design (1.44 kg) and ergonomic structure allow prolonged operations without operator fatigue. Additionally, its fast working cycle and integrated mandrel collection system ensure high efficiency and cleanliness in demanding production environments.

Maintenance of the ATSRL4000MV is quick and simple: jaw replacement and cleaning of the air channel can be performed manually without tools. This minimizes downtime and ensures consistent performance, making it a reliable solution for workshops and industrial applications.

The ATSRL4000HV hydro-pneumatic riveter is designed for installing structural rivets and stainless steel rivets quickly, accurately, and effortlessly, even on high-strength materials such as stainless steel and metal carpentry applications. Thanks to the combination of compressed air and hydraulic technology, this professional industrial riveter delivers high pulling force, uniform fastening, and maximum reliability in intensive applications. It is ideal for workshops, manufacturing companies, industrial assembly lines, and continuous production processes where high productivity, operational speed, and consistent fastening quality are required.

The ATSRL4000HV is compatible with Ø 4.8 mm and Ø 6.4 mm rivets, including structural rivets and high-strength stainless steel rivets.

Plastic threads fail because thermoplastic materials are exposed to creep, vibration and thermal cycling, which gradually deform the material and reduce torque retention over time.

These effects can lead to loss of fastening stability and eventual thread failure in industrial applications.

Press-fit threaded inserts work through a system of controlled mechanical interference between the metal insert and the thermoplastic material.

During installation, the anchoring crown embeds into the plastic, ensuring high resistance to pull-out and rotation without adhesives or heat processes.

DIN 16903 threaded inserts are brass components used in insert moulding to create permanent metal threads within injection moulded plastic parts.

Compared to direct plastic threading, DIN 16903 inserts provide higher mechanical strength, better resistance to repeated tightening cycles and eliminate progressive wear.

DIN 16903 inserts are compatible with engineering thermoplastics such as ABS, PA6, PA66, PBT, PC and PEEK used in high-performance industrial applications.

Hexagonal threaded inserts for insert moulding are brass components designed to be permanently integrated into plastic parts during injection moulding. The hexagonal geometry improves mechanical anchoring and ensures a stable and durable threaded connection.

Compared to direct plastic threading, hexagonal threaded inserts for insert moulding provide significantly higher mechanical performance and long-term reliability.

The brass structure allows the insert to withstand high tightening torques and repeated assembly cycles without thread degradation, reducing wear, cracking, and loss of fastening strength commonly seen in plastic threads.

This makes them ideal for industrial applications exposed to vibration, dynamic loads, and continuous mechanical stress, where joint stability is critical.

Hexagonal threaded inserts for insert moulding are compatible with the main engineering thermoplastics used in high-performance industrial applications.

These include ABS, PA6, PA66, PBT, PC and PEEK, selected for their mechanical strength, dimensional stability, and suitability for injection moulding processes.

This wide compatibility allows their use across industries such as automotive, industrial electronics, electromechanics, and medical devices, where reliability and long-term performance are essential.