Company

High temperature soldering systems for enamelled copper wire processing

2. April 2020

The assembly and connection technology using enamelled copper wire technology is a core process, especially for future mobility requirements. More and more regenerative energy generation systems are being installed in electric drive of modern vehicles, for which electric generators must be integrated. In addition, today’s e-mobility concepts require a large number of switching and transformation components, […]

The assembly and connection technology using enamelled copper wire technology is a core process, especially for future mobility requirements. More and more regenerative energy generation systems are being installed in electric drive of modern vehicles, for which electric generators must be integrated. In addition, today’s e-mobility concepts require a large number of switching and transformation components, coil bodies, magnetic heads, sensors, relays and other exotic electronic components, for which enamelled copper wire technology is also used in production.

 

For these many new requirements, enamelled wire manufacturers are constantly developing new products, which are equipped with a wide variety of insulation materials, some of which are also newly developed. This is intended to improve the insulation class and thermal resistance for future end products. “This development always presents us with challenges,” says Matthias Fehrenbach, Managing Director of Eutect GmbH. Because, by using the usual soldering techniques under normal atmosphere, it is impossible to process components coated with polyurethane or polyesterimide in such a way that no oxide formation occurs, or insulation residues considerably reduce the final soldering quality of the tinned wire.

 

In its module toolbox, Eutect has all selective soldering methods at its disposal that are capable of thermally stripping coated enamelled copper wires in one step without additional removal of the insulation. Lead-free processing with all its specific process finesses with regard to the specific solder alloy, the flux, the temperature-time curve with flowing or standing solder melt is the comprehensive core know-how of a target-oriented process processing. High-temperature soldering systems from Eutect have been developed for this purpose. These systems work with the static or flowing solder melt.

 

It is important to achieve a high quality of copper alloying, leaching and soldering. By using the static or flowing solder melt as well as an exact temperature-time curve, the process-conserving and product-specific stripping is defined. In order to counteract various negative effects, newly developed or yet to be developed solders with doping properties are used. These reduce wire deposition, solder oxide formation and solder contamination and protect the soldering equipment.

 

The high-temperature process for tinning from Eutect can be carried out with a static solder bath and a dynamic, freely programmable squeegee system. This reduces contamination and keeps the base alloy of the solder constant. Thus, the alloy remains in its original composition throughout the entire process. The controlled removal of the contaminated solder and the automatic solder replenishment of the base solder are thus kept constant over the entire production quantity. For a clean delineation of the lacquer between the tinned wire and the poly insulation, the wire ends can be kinematically moved during the immersion movement in the static or flowing solder wave or can be cleanly delineated with appropriate masking. This prevents burn-off residues of the poly insulation from sticking to the bare tinned and stripped wire or from visibly sticking to the wire as black dots, thus reducing quality. Although these impurities are harmless, they do not look nice.

 

Surfaces that come into contact with the hot solder are completely protected by special coatings, both in the static or flowing solder melt. In addition, an induction solder pump, which is free of moving parts, was developed for this area of application. The specially programmed algorithms with associated process control, redundant monitoring of the solder melting temperature as well as a nitrogen protective gas bell above the solder process surface and the height control of the solder waves round off the high-temperature soldering system. This includes an input HMI and process data acquisition for process tracking.

Efficiently Connecting Battery Cells

26. March 2020

To meet society’s increasing need for mobility and energy, new battery cell concepts and designs are constantly being developed. These stretch from large battery systems for e-mobility applications right down to small designs for mobile end devices of all types. For all types and applications, a reliable integrated circuit assembly and packaging technology, already provided […]

To meet society’s increasing need for mobility and energy, new battery cell concepts and designs are constantly being developed. These stretch from large battery systems for e-mobility applications right down to small designs for mobile end devices of all types. For all types and applications, a reliable integrated circuit assembly and packaging technology, already provided today by Eutect, is necessary.

 

Due to the wide range of applications, new technological concepts are necessary. The Swabian soldering specialist Eutect also faces this development. According to the management, inquiries from the battery production sector are constantly increasing. Based on the modular design systems from Eutect, the company has developed, in cooperation with its customers, specific soldering solutions that are tailored to the individual specifications of the battery production. These solutions must be reproducible and withstand high economic conditions in a subsequent series production.

 

During evaluations, Eutect solutions are tailored step by step to the customer’s end product. In the process, adapted mini-wave solutions are often used. For example, specifically developed mini wave solder nozzles with an inert gas configuration or heat insulating solder mask can meet the requirements of an economical and faultless battery processing specification. Using the example of a packetized lithium battery block, this thermally gentle Eutect process control has been able to demonstrate electrically high-quality and economical production reliability. The associated assembly and packaging analytics showed a reproducible intermetallic phase formation between the battery cells and the plus and minus connections.

 

In principle, Eutect solutions are based on the solid assembly and connection technology developed in-house, which generates a solution for the battery connection technologies adapted to the end product. The aim is to transfer the high-current connection technology from the molten solder directly, over a large area and electrically isolated into a reliable connection Standard welding and soldering processes are used. Here, the demands on the assembly and packaging are high. The connections made should be free of short circuits between the plus-minus poles, blowholes, hotspots, impurities and temperature damage. This can be achieved by means of one of the key assembly and packaging strategies in which the quick, reliable transfer of the solder is guaranteed. The aim here is to avoid the impermissible and pre-damaging mechanisms and to carry out the processing of the battery cells without side effects. In the process, the environment around the solder points is and can also be protected. Here, Eutect relies on its well-founded modular design system that provides the appropriate solution based on the application.

Eutect presents multi-thermode automation

20. March 2020

20During the 2nd half of 2019, one of the largest thermode soldering machines ever built by Eutect GmbH was delivered. It is the TL S270, which integrates five individual processes in line, including complete process monitoring. The system consists of various individual steps of solder paste application using a dispenser and thermode soldering.   “The […]

20During the 2nd half of 2019, one of the largest thermode soldering machines ever built by Eutect GmbH was delivered. It is the TL S270, which integrates five individual processes in line, including complete process monitoring. The system consists of various individual steps of solder paste application using a dispenser and thermode soldering.

 

“The TL S270 is a highly flexible soldering system that we built to specification of the customer. The aim was to link and monitor the individual steps within the unit”, explains Matthias Fehrenbach, Managing Director and owner of Eutect GmbH. With dimensions of 2.30 m x 4.80 m, the TL S270 is one of the largest integrated systems developed by the Swabian special machine manufacturer. A total of 2 dispensing and 3 thermode soldering processes have been integrated, which are used to solder a wide variety of different cables on to sensors.

 

The components are moved within the system via satellite workpiece carriers, which sit on a basic carrier. The assembly, on which sensors will be mounted in this application, is insert into the workpiece carriers. By using further small satellite carriers, which are manually placed, the to be soldered cables are placed and fixated in the correct position. The workpiece carrier then enters the system. In the first two steps, spindle valve dispensers apply solder paste to the assembly surfaces and the cable strands of the cable ends. In the following steps, these strands are then soldered using thermode soldering while monitoring temperature, force and path.

 

For the thermode soldering process, the developers at Eutect have integrated the latest version of the TL thermode soldering module, in which all process-relevant parameters can be defined. “This refers in particular to the contact pressure, sink path and temperature profile, which can be configured exactly for the process and according to the operator’s needs. We therefore offer the user much more than a controlled and monitored process. He gets a 100% coordinated and definable process,” says Fehrenbach. The three thermode soldering modules including X-Y-Z and rotary axis are each mounted on a highly intelligent linear axis. This results in a highly flexible, highly dynamic and very compact process implementation with integrated Kapton tape guide.

 

The contact pressure of the thermode is 1-60 N. The contact force is displayed and controlled in steps of 0.5 N. This contact pressure can be entered via the new visual control panel, depending on the application and materials. A leading and trailing fixation device secures the surfaces to be soldered. “Thanks to the application-optimized contact pressure and the likewise new hold-down device, we can optimize the cycle time up to a maximum of 70%, depending on the heat sink of the solder joints. In this project, we have provided our customer with cycle time savings of up to 20%,” Fehrenbach emphasizes. In addition, the sinking distance can be controlled. The sinking-in control is 1 µm, which is unique in the field of thermode soldering. “The sink path, which can be freely adjusted in µ, enables defined soldering gaps and thus the best possible intermetallic phase arrangements,” Fehrenbach explains the process advantages.  In addition, the temperature profile can also be regulated via the control panel and checked via redundant temperature measurement. The maximum thermode temperature is 450°C. Resistance measurements for monitoring the contact surfaces are also possible.

 

The TL S270 can be used in two different modes. “The workpiece is entered manually. After passing through the unit, the finished workpiece can be removed on the rear side or it can be returned to the input position on a conveyor located in the chassis, where the operator removes the workpiece,” explains Fehrenbach. In addition to these process-relevant modules, the TL S270 is equipped with further modules for process monitoring and transport protection. “The input and rear removal areas are equipped with monitors for process control and monitoring, which are attached to long arms. These arms allow the monitors to be used on all four sides of the large plant. In addition, the dispensing process is monitored with two cameras each, so we have installed another monitor only at the input area,” explains Matthias Schmid, project manager for the TL S270 implementation. To ensure smooth return transport of the workpiece carriers within the system, another conveyor belt was installed on the side of the unit. “This is used to transport the cable fixing carriers back in order to process assembly of the cables parallel to the actual soldering process, otherwise the unit would wait for the operator due to its optimized cycle time”, says Matthias Schmid, project manager of Eutect.

EUTECT presents full-service customer support concept

11. November 2019

By the end of the year, EUTECT will present a new service concept. This includes additional services and a high level of individual support for customers and partners with service, training and maintenance activities. Further expansion of the spare parts service is planned for 2020. “Once our customers have decided on a product from our […]

By the end of the year, EUTECT will present a new service concept. This includes additional services and a high level of individual support for customers and partners with service, training and maintenance activities. Further expansion of the spare parts service is planned for 2020.

“Once our customers have decided on a product from our company, our attentive customer liaison has often already started with the evaluation of the soldering process. This thorough service also continues after the installation at the customer’s location,” explains Matthias Fehrenbach, Managing Director of EUTECT GmbH. The new EUTECT service not only includes the common service and maintenance packages, but will go beyond, due to the high degree of individualization of the customized machines. “All process solutions from our company are designed for specific processes, products and working environments and are often implemented only once in a single configuration. Therefore, we tailor our service and maintenance packages just as individually as our machines. After all, service and maintenance must not only contribute to the functionality and value retention of the machine, but must also be geared to the customer’s processes, products and working environments. The goal is the absolute minimization of production downtime,” adds Fehrenbach.

Furthermore, all modules and machines are equipped with their own QR code. This code is attached to at least two easily accessible spots. This code gives access to the operating manual of the machine. Although it is sent with the machine, it is often lost in day-to-day business. The QR code guarantees constant availability of the latest version of the operating manual. In the future, EUTECT will focus even more on the ongoing training of customer employees. “Employees leave, machines and manufacturing processes are relocated, or our customers want to refresh their know how. There are many reasons. We train customer employees worldwide in the efficient use and maintenance of their EUTECT systems and modules. We are happy to share our process knowledge and experience,” says Fehrenbach, describing the training concept. This also includes process training, consulting and automation consulting. The aim of the latter is to integrate the soldering process efficiently into the manufacturing process using automation technology in conjunction with all other relevant manufacturing processes. The entire scope of services is not only offered for EUTECT systems. EUTECT also supports enquiries about soldering process optimization using third-party systems.

A new addition is preproduction, C-sample and small batch production. EUTECT offers this in its in-house EUTECT technical centre. “After the initial installation of the pre-production series, it is often decided whether changes need to be made to the product and thus to the soldering process. These changes then naturally have an influence on the final soldering process. In other cases, the production volumes are too small for an EUTECT system, but the product is too complex to be soldered in a standard system. In this case, our customers can also use our EUTECT technical centre,” Fehrenbach describes this service.

For 2020, Fehrenbach has set the task of optimising the retail of spare parts, tools and consumables. All these activities are accompanied by internal structural changes, since the structures must be adapted to implement the new services. “We have taken the first steps in this direction, but we will have an optimization schedule till 2020. We assume that all implementations will be completed in the spring,” Fehrenbach points out.

EUTECT presents fully automatic piston soldering using a collaborating robot

6. November 2019

EUTECT GmbH is presenting a soldering system for fully automatic piston soldering at productronica 2019. This enables the integration of soldering irons from various suppliers. This soldering system is available with an automatic tip changer and an optional kinematic system. The overall concept is based on the new EUTECT automation platform Multiple Process Changer (MPC), […]

EUTECT GmbH is presenting a soldering system for fully automatic piston soldering at productronica 2019. This enables the integration of soldering irons from various suppliers. This soldering system is available with an automatic tip changer and an optional kinematic system. The overall concept is based on the new EUTECT automation platform Multiple Process Changer (MPC), featuring a collaborating robot system by German Robotics.

At the end of 2018, the Swabian soldering specialist integrated collaborating robots into its production cells for the first time and installed them at the customer’s site. The R&D team has now used this experience to develop the new MPC collaborative automation platform. The platform will be presented at productronica with a piston soldering head. The integration of other systems such as dispensers, screw- or placement tools and grippers into the MPC is also planned. “We see the MPC automation platform as a flexible solution that can be equipped with different tools for different applications as required by the customer,” says Fehrenbach, Managing Director of EUTECT GmbH. The use of different tools in one work process is also planned. “At the trade show, we will present the most straightforward application for us, the fully automatic, collaborating piston soldering. We will introduce further tool solutions in 2020 and thus expand and complete the MPC continuously”, Fehrenbach continues

The MPC KL (piston soldering) system, which will be presented at productronica 2019 for the first time, can be equipped with piston soldering systems from JBC or Hakko. The soldering iron is fixed to the arm of the robot, including the sensitive wire feeder (SWF). Robots, control systems and soldering irons are one machine unit. The complete system in the standard version consists of a rotary indexing table for manual component assembly and a safety cell surrounding the soldering process. Furthermore, a soldering tip holder is integrated in the process area for fully automatic changing of the soldering tips. The same applies to tip cleaning.

As an option, the rotary indexing table can be exchanged for a conveyor system. The soldering system can thus be used inline or loaded and unloaded via an assembly carrier. “We will be presenting the basic system at the trade show. All further adaptations to the customer process are possible, but are offered separately as a special service,” explains Fehrenbach. It is also possible to integrate the robot, with the associated solder heads and subsystems, into other EUTECT production cells. “With the system shown at the trade show, we are also interested in demonstrating the possibilities. We want to inspire customers to think outside the box.,” says Fehrenbach.

The robot used by EUTECT is a Panda from German Robotics equipped with torque sensors installed in all seven axes. This gives the panda seven degrees of flexibility. Thanks to the built-in sensors, the robot arm can also approach complex positions with the soldering iron and set soldering points with exceptional precision. The Panda is equipped with the most accurate contact detection and therefore stops immediately in the event of collisions and non-programmed impacts. “This is of course important for employee protection. But it also allows very precise soldering, as the robot works very carefully and precisely due to this degree of sensitivity. This is the only way to achieve reproducible results,” explains Fehrenbach.

Both EUTECT GmbH and German Robotics GmbH will be exhibiting their systems in hall A2, booth 540.

Synergy of two generations – Tradition and progress

Our motivation is to solve tasks jointly in a team with customers and partners. EUTECT is the perfect combination of senior experts, specialists, tinkerers and doers. We like to think outside the box. Our creation is focused on sustainability. Our solutions offer maximum efficiency in minimum space. Thereby we create energy and resource saving soldering modules and soldering automation.

As an owner-managed family business, we promote the impulses and ideas of our employees since 1978. That is the basis for innovation and constant change – in our own team and in the collaboration with our customers and partners.

Only he who continuously renews himself, is able to meet the demands of the future.

We are happy to tackle this challenge with you. Conscientiously, reliably and sustainably. We are your partner for solutions beyond the standard.

Made in Germany

Our aim is to realise high-quality and technically perfect machines. It is all about the optimal solution for every customer.

EUTECT stands for a consistently applied quality management, that does not first begin during production, rather already during the development.

Contrary to the usual trend, we prefer a high real net output ratio. In our Technology Centre we find the optimal connecting process for your product. Modules and systems are developed in our 3D design system and transferred via the CAM system to our CNC production. We assemble, document and program in-house.

The commissioning takes place on our premises or on-site at our customers. In addition, by means of machine- and process training courses as well as production support, we offer our customers deadline security in the project and fast, competent support from a single source.

Consequently we guarantee products and services, that always and comprehensively meet the requirements for the seal of approval “”Made in Germany”.

CERTIFICATE DIN EN ISO 9001:2015

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Securing the future through sustained action

Every year we invest over 10% of our turnover in research and development. Our employees, partners and customers thereby ensure again and again for new, creative approaches.

Consequently EUTECT is always at the cutting edge.

We also promote this through the continuous further education of our employees. Internally, know-how presentations of the individual teams that are held every month ensure for the best possible transfer of knowledge in the entire EUTECT team. Through cross-team project communication, we create a great wealth of experience, from which every single employee profits.

We know: Every employee is part of the EUTECT problem-solving competence. An open, alert type of collaboration as well as a good working relationship in the team and with the customer is the foundation for lasting company success.

We are happy to share this company success, because sustained action does not end at the works gate. EUTECT supports a series of social and ecological projects nationwide and in our own region. Because as a part of society, it is a matter of concern to us, to act socially and conscientiously.

Cradle to Cradle concept

In every unit delivered by Eutect, not only labour time but also material values have been invested, which can be used for new projects. This can be, for example, the production cell, kinematic solutions but also soldering modules such as soldering nozzles, wire feeders or thermodes. If these parts are still operating, they can also be reused and can be integrated into other machine concepts if the sustainability and cradle-to-cradle idea is applied. This approach is based on a continuous and consistent recycling management. The German chemist Michael Braungart and the American architect William McDonough came up with this approach, which is based on “cradle-to-cradle products” that can be kept continuously in technical cycles as “technical nutrients”. Our “technical nutrients”, such as the production cell, soldering modules, robots or other kinematic systems are returned to our production after a thorough inspection and overhaul, as well as extensive functional testing, after this has been agreed to by the customer.

Customer loyalty through problem-solving competence

The customer and his problem are at the centre of our thoughts and actions.

For your products, your tasks and your specific requirements, we create solutions for mutual success. We thereby accompany and support you throughout the entire process of your product development. For the planned integrated circuit packaging (AVT), your products are jointly evaluated in a process environment suitable for volume production.

Our EUTECT Technology Centre is available for evaluations as well as pre-production soldering in order to find a practical solution under original process conditions.

All results and experiences flow directly into our product development. This know-how forms the foundation for the success of the project and the maximum technological benefit for further projects in the future.

We want to accompany you over the long-term.

Partner

Feinhütte Halsbrücke

With over 400 years of experience in metallurgy, Feinhütte Halsbrücke is one of the oldest metallurgical plants in Europe and Germany’s only tin and lead smelting plant of this complexity in the field of pyro- and hydrometallurgy. As extremely experienced specialists in soft solders and alloys for industry and trade, they supply almost all alloys according to standard or individual customer-specific specifications. Feinhütte Halsbrücke also finds innovative solutions for new applications. The range of products includes almost every common format – from ingots and blocks, rods, bars and studs, solder wire and flux-cored solder, classical anodes to practical bulk material formats. In addition, they provide various services such as solder bath analysis, solder bath management, laboratory diagnostics as well as a comprehensive full recycling service for production waste.

www.feinhuette.de

Emil Otto

Since 1901 the name “Emil Otto” stands for top quality. As owner-managed company, Emil Otto is committed to the development and manufacturing of high-quality fluxing agents. In particular the fluxing agents for electronics production, strip tinning, cooler construction as well as for galvanizing are used by market leaders at home and abroad.

Over the year’s reliable products and a high level of customer care have become the signature. The manufacturing takes place in accordance with the latest standards, the quality- and environmental management system has been certified for many years. Emil Otto responds with high flexibility to customer requests. Special products or product adaptations are developed and implemented in collaboration with system manufacturers and institutes.

www.emilotto.de

INMATEC

INMATEC is the international market leader in the production of nitrogen and oxygen generators. The company, based in Herrsching am Ammersee near Munich, has stood for innovative technology “Made in Germany” for over 25 years! With the experience and know-how from over 8,000 installed systems around the world, the company develops and produces modern, energy-efficient and future-oriented solutions for on-site nitrogen production. Based on many years of experience in the electronics industry, INMATEC has also developed various products specifically for electronics production that deliver high purity nitrogen at extremely low costs even in small quantities, including an easy-to-use, low-maintenance plug & play solution. The nitrogen generated by INMATEC generators meets the requirements for a wide variety of soldering processes such as selective, wave or reflow soldering. An innovative and extremely efficient technology for extracting nitrogen from the ambient air helps to save considerable costs for the uninterrupted N2 supply. A service team available around the clock coordinates the deployment of the service technicians for customers worldwide.

www.inmatec.de/en

Optimum – Smart Klaus

Smart Klaus is a multiple award-winning and field tested cognitive assistance system. By means of industrial image processing and intelligent image recognition it supports employees in manual assembly, in goods receipt and in goods issue.

In manual assembly, Smart Klaus is used as a cognitive worker assistance system and takes over worker guidance and simultaneous quality assurance of the individual assembly steps in real time and directly at the assembly site. He guides the workers step by step through the assembly process and simultaneously checks that no errors occur. The employees can work without stress and learn new assembly tasks quickly and safely.

https://www.optimum-gmbh.de/en/products/smart-klaus

Tübingen Tigers

We are a top partner and youth sponsor of the Tübingen Tigers. According to our motto: We create connections, we can be found with our logo on the jerseys of the youth teams of the NBBL and JBBL. Furthermore, together with the Tübingen Tigers, we award the EUTECT Assist Champion of the professional team (2nd Basketball Bundesliga) as well as the NBBL and JBBL teams on every matchday. We are very much looking forward to the long-term partnership and wish the Tübingen Tigers much success in the years to come.

www.tigers-tuebingen.de

picture: ninasander-photografie.de

We create connections

EUTECT cooperates with competent partners, such as universities, technical colleges, institutes, working groups, networks and ministries.

Through the professional exchange we want to secure and expand our top position in the market. Thanks to these networks, we can evaluate and analyse technical developments early, and if appropriate, integrate them in the technical further development of our products.

Downloads

EUTECT Zellenmodule

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EUTECT Software family

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EUTECT Brochure

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EUTECT Module toolbox

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Credentials

A career at EUTECT

Besides the support with final dissertations for Bachelor- and Master theses, EUTECT is also pleased to offer internships.

We place great value on being a long-term, dependable and social employer for our employees. By means of flat hierarchies and short decision-making routes, we make it possible for every employee to actively participate in the development of the company.

8. EPP Virtuelles InnovationsFORUM

New date: 28. – 30. October 2020
https://epp.industrie.de/innovationsforum-deutschland/