SEHO will exhibit at Electronics Manufacturing Korea, scheduled to take place May 15-17, 2019 at the COEX Exhibition Center in Seoul, South Korea. The company will demonstrate the StartSelective and MaxiSelective-HS in the Heller booth #A133.

With a footprint of only 2.5 m², the StartSelective provides maximum quality and reproducibility of soldering results for assemblies up to 20″ x 20″ and an outstanding return on investment. The StartSelective is thought through down to the last detail, from its compact design, ease of operation that does not require special skills, and many technical highlights.

All process-relevant components such as the micro drop jet fluxer, preheat system and maintenance-free electromagnetic soldering unit have successfully been in use for years in other soldering systems from SEHO. While all process steps are fully automated and monitored, loading and unloading of assemblies is done manually.

The MaxiSelective-HS is the ideal high quality selective soldering solution for when short cycle times are required. Parallel processes in the fluxing, preheating and soldering area, simultaneous contact of all solder joints with product specific multi-nozzle soldering tools, and the parallel transfer of the assemblies to the next work station make this the ideal system for mass production.

Two basic machine versions of the MaxiSelective-HS can be equipped with four or six stations working in parallel both offer the flexibility needed to meet your individual production requirements. Additional buffer stations at the inlet and outlet of the machine complete this high-speed system. In order to meet complex production challenges or o respond to increasing manufacturing volumes, the MaxiSelective-HS can be expanded with additional modules or it may be combined with other machine types at a later date.


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Outstanding Success: The 2019 Technology Days were hold in conjunction with guest presenters from Stannol LLC (soldering flux technologies), DCT USA LLC (process cleaning technologies), KIC (thermal profiling) and Scienscope International USA (inspection solutions). The event took place May 7–8, 2019 at SEHO’s North America Technology Center in Erlanger, KY.

If you need best practices you can put to work immediately, the SEHO Technology Days were the place to be. SEHO Technology Days generally are designed to provide a perfect balance of theory and practical application. In addition to hands on trainings, this year’s event included presentations from leading flux, solder and equipment suppliers. Industry experts presented their latest findings and shared expert insight on the latest industry issues and trends.

Topics of discussion included typical challenges in electronics production as well as methods to optimize soldering processes to approach a zero-defect production. Experts provided tips for board and pallet design to improve product quality while reducing production cost.
Guest presenters also discussed new applications in soft soldering of aluminium and aluminium alloys and highlighted the differences between water-based fluxes and alcohol-based fluxes as well as the challenges when working with these fluxes. Another topic was the complexity of the cleaning process in electronics manufacturing. The need for profiling the wave soldering process was discussed and various types of wave solder profiling configurations were showcased. A review of the use of X-ray for inspecting PCBs and components in a non-destructive test environment completed the exciting program of the two-days event.
As a special highlight, SEHO’s new StartSelective entry-level selective soldering systems was introduced.

The technology days were part of the successful SEHO Academy program conducted both at SEHO Germany and SEHO USA with more than 1,000 satisfied attendees worldwide.

Knowledgeable employees can optimize processes to improve production throughput, reduce cycle times, improve the level of quality, reduce failures, and cut down overall cost.


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SEHO highlighted a full line of market leading soldering systems at the IPC APEX EXPO.

The new StartSelective is the perfect plug-and-produce selective soldering system for those just entering automated soldering. Connect, power on and produce: The StartSelective is thought through down to the last detail, from its compact design, ease of operation that does not require special skills, and many technical highlights. With a footprint of only 2.5 m², the StartSelective provides maximum quality and reproducibility of soldering results for assemblies up to 20“ x 20“ and an outstanding return on investment.

All process-relevant components such as the micro drop jet fluxer, preheat system and maintenance-free electromagnetic soldering unit have successfully been in use for years in other soldering systems from SEHO. While all process steps are fully automated and monitored, loading and unloading of assemblies is done manually.

The bottom-side preheat section of the StartSelective is equipped with pulsar heaters over the full area, which can be activated individually depending on board dimensions. Pulsar heaters feature a high energy density and quick reaction time. This enables a remarkable reduction in energy consumption. An additional top-side IR preheating ensures permanent and controlled heat support during long cycles.

Another highlight is the optimized soldering area with non-wetted mini-wave solder nozzles, featuring a 7° soldering angle. The nozzles convince with stable and reproducible flow properties, resulting in outstanding soldering quality. Even difficult geometries can be soldered easily. Moreover, non-wetted solder nozzles are maintenance-free and feature a nearly unlimited lifetime, thus avoiding follow-up costs. Additionally, they do not require any chemicals for activation – an advantage for both the health of the maintenance staff and the environment.

Just like the high-volume selective soldering systems from SEHO, the StartSelective is equipped with a complete package for automated process control. The spray jet control in the fluxing area, automatic wave height control and solder level monitoring with automated solder wire supply are only some of the monitoring functions.

The StartSelective is designed for maximum efficiency. Programming is 100 percent offline at any PC workplace so that the machine is always available for production. Loading and unloading of assemblies is done from the front side, and all setup, retooling and maintenance are easily accessible on one side of the machine. This design allows users to integrate the StartSelective in any production island with minimum footprint requirements, or to place it as stand-alone system in the corner of the production floor.

Further highlights at the SEHO booth were the SelectLine and the PowerWave. The SelectLine features outstanding flexibility, and because of its modular design, it can be upgraded any time to grow with customer production requirements. Unique technical details like the automatic ultrasonic nozzle cleaning system ensure highest process reliability and maximum machine availability.

With the PowerWave wave soldering system, which is ideally suited for medium to large production series, SEHO realized a machine concept that offers remarkable performance at simultaneously low investment costs.


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Outstanding Success for SEHO’s High Speed Selective Soldering System.

SEHO introduced the new MaxiSelective-HS – the selective soldering system for maximum throughput requirements – at Nepcon South China 2018 with outstanding success.

The MaxiSelective-HS is high quality soldering solution when short cycle times are required. Parallel processes in the fluxing, preheating and soldering area, simultaneous contact of all solder joints with product specific multi-nozzle soldering tools, and the parallel transfer of the assemblies to the next work station make this the ideal system for mass production.

Two basic machine versions of the MaxiSelective-HS can be equipped with four or six stations working in parallel both offer the flexibility needed to meet your individual production requirements. Additional buffer stations at the inlet and outlet of the machine complete this high-speed system. In order to meet complex production challenges or o respond to increasing manufacturing volumes, the MaxiSelective-HS can be expanded with additional modules or it may be combined with other machine types at a later date.

Of course, the MaxiSelective-HS provides outstanding features for automated process control. Flux quantity monitoring, gradient-controlled temperature profiles, solder level control with automatic wire supply and an automated wave height control are only some of the machine’s highlights.


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Automation Technology at the Highest Level

With the aim to make the production process in electronic manufacturing more efficient and to reduce production costs sustainably, SEHO extended its range of automation solutions in recent years.

The products range from board handling with conveyor systems to connect various machines and work places in production lines, buffer systems, turn stations, e.g. for changing the direction in manufacturing lines, lift stations, as well as transfer units and many more.
Work places made by SEHO are ergonomically designed and individually adjustable in height to be adapted to different operators. All of the connected stations such as buffers or conveyors adjust their height automatically.
In addition, a particular focus is on cobots and robots that are housed in a multifunctional production cell. This cell can be equipped individually so that the robot may take over several tasks: For component placement, for assembly and disassembly of component downholders, for loading and unloading of carriers, for precise positioning of boards for AOI and electrical tests, and for removal of reject parts.

Combined with the innovative soldering systems from SEHO, users benefit from complete solutions that are perfectly matched both technically and in regards to production flow. SEHO assists customers with creative ideas in the planning phase to best meet the individual production challenges, and constructs and manufactures the production line to provide customized automated solutions.

Click here to read the full article, published August 2018.


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A production process free from defects, with every step being reproducible and traceable, is the target of quality assurance in electronics production worldwide. In many cases, manual rework processes are not allowed due to quality related reasons and cost issues. It is time consuming and cost-intensive, and hidden costs need to be considered, such as productivity rates or personnel training. Because of this, assemblies with defects often go through the production process a second time. However, in this case the entire board is exposed to the thermal load, not only the faulty solder connections, which can effect the overall product reliability.

An automated zero-fault production concept can provide a cost-effective solution. Automated process control and integrated automated rework enable a soldering process free from defects and completely documented.

Click here to download the full article that has been published in EPP Europe 1/2018 and in US Tech May 2018.


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SEHO Systems GmbH is pleased to announce that it was awarded a 2017 Global Technology Award in the category of Soldering – Selective for its Integrated Additional Processes in Selective Soldering Systems. The award was presented to the company during a Tuesday, Nov. 14, 2017 ceremony that took place during productronica in Munich, Germany. The SEHO PowerSelective and SEHO SelectLine selective soldering systems can be equipped with an automated selective brush system and an AOI system for immediate automatic cleaning and inspection of solder joints directly after the soldering process. All processes are integrated in ONE machine.

The ability to reduce production costs while maintaining consistently high quality is essential for electronic production. Solder balls represent a soldering defect that is considered particularly critical. There are numerous reasons for the formation of solder balls in selective soldering processes, ranging from poor process setup, up to the material used, such as the solder resist of the PCB. Solder balls can cause shorts leading to complete failure of the assembled product. Other typical soldering defects such as solder bridges, insufficient wetting or open solder joints also can severely affect the product quality and reliability.
Considering that manual cleaning or repair processes after soldering are not only expensive and time-consuming but also provide poor reproducibility, the target, therefore, is an automated and fully controlled zero-fault process.

With SEHO’s Integrated Additional Processes in Selective Soldering Systems, all processes – selective fluxing, preheating, soldering with selective mini-wave, multi-nozzle or even conventional wave soldering, selective brushing, AOI and cooling – can be performed in parallel for different boards. Therefore, the additional processes do not influence the cycle time. The advantages of the additional functions are obvious: Safe and reliable processes on the one hand, and reduced overall production costs on the other hand, as the integrated additional processes use the handling units of the soldering machines (conveyors, axes, grippers etc.) and in addition they do not require extra floor space.

Premiering in 2005, the Global Technology Awards program is an annual celebration of product excellence in electronics surface mount assembly. Premier products based on the finest examples of creative advancement in technology are chosen by a distinguished panel of industry experts.


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In 1976, a still prevalent success story began: Today’s SEHO Systems GmbH started as SEHO Seitz & Hohnerlein GmbH to drive rapid technology developments in electronics industry. The enterprise emerged from a small wave soldering system provider into a global player offering customers complete solutions for soldering systems and automated production lines.

The entire SEHO product range of soldering units can be found in the SEHO Technology Center. It is apparent that Technology Center visitors do not notice any odors, but every tinkerer knows the typical smell of molten solder. “There are strict legal regulations on air purification during system operation”, explains Hermann Liebler, Area Sales Manager with SEHO. “Any soldering unit must not be operated without extraction and filtration.”

Currently, each of the seven stations in the SEHO Technology Center features a flexible LRA 200 extraction and filtration unit from ULT. The vendor’s LRA system series was developed for soldering fume removal.

Click here to download the full article, written by Stefan Meißner, Head Corporate Communications, ULT AG and Heike Schlessmann, Marketing Manager, SEHO Systems GmbH.


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Siemens Industrial PCs have been leading trends over 30 years. As early as 1983, Siemens started combining standard PC technology with characteristics that fulfilled the demanding industrial requirements. And with its SIMATIC IPCs Siemens has since continued to set new milestones. With 4500 employees, the Karlsruhe site is the fifth largest location of the Siemens AG in Germany. It includes the Process Industries and Drives division, with process industry and process automation being the focus of the site.

Its modern manufacturing concept helps the Siemens AG in Karlsruhe to produce groundbreaking solutions and to set new standards on a regular basis. The production concept behind the fulfillment of individual customer requirements is based on modern manufacturing islands. In addition to the ability to cost-effectively produce smallest lot sizes, the standalone “island” production approach largely eliminates process-related waiting times and supports the manufacturer of highest quality products.

The basic prerequisite for flexible manufacturing islands is of course the flexibility of the individual production plants within an island. “We ensure this flexibility by using selective soldering systems and automation technology from SEHO” says Josef Kühn, a planner and designer in the Technology department at Siemens Karlsruhe.
The newest IPC manufacturing island at Siemens in Karlsruhe is used in a 2-3 shift operation scenario, production stoppage to allow the soldering nozzles to be cleaned manually was not an option. Instead, the SelectLine was fitted with SEHO-patented ultrasonic cleaning technology. “Our experience has shown that cyclical ultrasonic cleaning significantly improves the service life. With SelectLine soldering nozzles, we have an average service life of approximately 2 months – typically we would just get a few days with other comparable systems,” says Josef Kühn.

Click here to download the full article as PDF file.

 


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