SEHO to show solutions for cost-efficient high-mix production.

The wave soldering process remains an indispensable aspect of electronics manufacturing and provides a high potential for improvements in terms of flexibility and efficiency. Therefore, SEHO has introduced some new and innovative features to bring its MWS 2300 wave soldering system to a new level of productivity.

New pulsar emitters combined with precise PCB pass-monitoring allows remarkably higher flexibility in the preheat area.  This new preheating concept allows for the cost-efficient manufacture of large series as well as a batch size of one.

SEHO’s new automatic nozzle height adjustment provides higher flexibility in the soldering area if a large number of different variants are to be manufactured. The height of the solder nozzles can be adjusted via the software, which allows creating the optimal product-specific distance between the circuit board and solder nozzle. This new function thus provides independence from the workpiece carrier or assembly design without affacting cycle times and allows maximum flexibility as well as a component-specific defined solder peel-off.

Consistent height of the solder wave is crucial for wave soldering processes. However, so far it has not been possible to measure the wave height without interrupting the production process and the result is just a momentary snapshot that does not provide any information about necessary parameter modifications.
SEHO now presents the first automatic wave height measurement, built into the soldering section of the MWS 2300. This feature is based on a contact measurement that produces reliable results and processes for laminar as well as turbulent solder waves. Based on the measuring results, the wave height is automatically regulated within adjustable tolerances.

Additional highlights at the SEHO booth will be latest developments in the field of selective soldering and THT-AOI. Of course, SEHO’s most flexible selective soldering system, the SelectLine-C with integrated brush unit and AOI system, will be showcased as well.

The SEHO team is looking forward to welcoming visitors to Booth #1451 during the IPC APEX EXPO.
We are pleased to provide you with free admission to the expo hall. Simply click here to register online.


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SEHO Systems China Ltd. commenced business operations on 1 January 2020.

SEHO Systems GmbH established a subsidiary in China. With this new subsidiary in Shanghai, SEHO intends to expand its presence in the Asian market and focus on the requirements of its Chinese customers.

SEHO can look back on an exceptionally long and successful business relationship with its local partner company, Toratec, and its customers in China. When Toratec owners Judy Yao and Thomas Raisch went into retirement, SEHO quickly decided to establish its own subsidiary in China. “Over the last few decades, we have had a very close partnership with Toratec and everybody who works there,” says Markus Walter, Managing Director and shareholder of SEHO Systems GmbH. “The Toratec team has a lot of know-how about processes and machines, and of course detailed market knowledge and many customer contacts. These are valuable assets for us, and so we are delighted that the entire team will become an important part of SEHO Systems China.” Chinese customers will benefit from the technical expertise of a committed team of specialists who know the market and its challenges.

SEHO Systems China, Ltd., the new subsidiary, will provide a number of advantages. In addition to providing qualified local support, the most important consumables and parts will be kept on hand locally so they can be delivered to the customers quickly when needed.
Another important milestone will be the launch of an application centre in Shanghai, equipped with SEHO’s innovative soldering systems as well as highlights from the THT-AOI product ranges and automation technology. In addition, the new premises will provide ample opportunity for sharing experience and know-how during seminars and technology forums that will be held there.

“Our Shanghai subsidiary does not only represent the continuation of our involvement in the Chinese market—we will also provide additional resources for our local experts, which will enable them to support customers efficiently in reaching their manufacturing goals, and provide customers with solution-oriented consultation to make them even more successful,” adds Markus Walter, who will head the new subsidiary in Shanghai as CEO. Sandy Liu, who has been with Toratec for many years, will be in charge of technology; Michael Straub will lead the sales team. Both are extremely familiar with SEHO processes and systems and are looking forward to their new roles.

 


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SEHO PowerSelective wins HELLA Benchmark.

Maximum process and system flexibility while using the smallest possible footprint – this was one of HELLA’s main requirements for a large-scale benchmark test for selective soldering systems. HELLA specializes in vehicle lights and electronics and is among the top 40 automotive suppliers in the world. For this reason, the company also places stringent demands on its system providers in order to safeguard its ability to deliver top-quality technologies at all times.

“The high quality standard of our products is our top priority, regardless of which factory manufactures any given assembly,” says Vinson G. Foo of Operations Industrial Engineering at HELLA in Lippstadt. “The production equipment as well as the manufacturing processes follow international standards, and the process technology specialists from the different factories meet on a regular basis in order to share their experience and establish the worldwide manufacturing strategy,” adds Foo.
For this reason, the large-scale benchmark test in the selective soldering field looked beyond Germany and included aspects of global importance in the decision-making process. The benchmark test spanned one year and involved an intensive cooperation with all well-known soldering system manufacturers.

Vinson G. Foo: “In SEHO, we have a partner at our side who is equally committed to our idea of quality. Our technology partnership is working out very well, and we have the set-up and the flexibility to meet the demands of today and of the future.”

Click here to download the full article, published in Global SMT & Packaging, November 2019.


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SEHO Receives 2019 productronica Innovation Award!

For the third time, the focus in Munich was not only on the leading electronics trade fair. The productronica Innovation Awards, the first independent prize in electronics manufacturing, were presented by a top-class jury of industry experts. SEHO was announced as the winner in the ‘SMT Cluster’. The company won out of more than 30 other applications in this category.

The electronics industry is one of the most dynamic and innovative industries. This is impressively confirmed by the number of entries for the innovation award. A total of 80 entries were made this year – a record number. This prestigious award recognizes in six categories the most innovative new products and manufacturing processes.

„We are very proud to receive the productronica Innovation Award 2019,” says Markus Walter, CEO of SEHO Systems GmbH. “It is our aim to continuously create added value for our customers by constantly improving our machines and existing processes, optimizing them for future applications and implementing innovative ideas. This has been perfectly accomplished with the new SelectLine-C.”

The new SelectLine-C has been designed for the constantly growing requirements in the manufacturing of next-generation products, such as 5G antennas or LED technology. The electronic components used in these next-generation products typically do not conform to usual board dimensions. They are up to 3 m long, or even more, and cannot efficiently be processed with existing manufacturing systems. By means of an automatic software switch the SelectLine-C can be converted from a conventional production mode, where the assembly stops at each station for the duration of the process step, to a continuous mode. While the assembly keeps moving continuously, the axis systems with the process stations travel along and work on the solder joints selectively during the pass. The software automatically coordinates and optimizes the assembly transport and the positioning of the process stations.

 

As the individual processing stations thereby do not have to match the actual length of the assemblies, the SelectLine-C stands out for its very compact design. This minimizes production floor costs, resulting in an excellent cost-efficiency.


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The perfect solution for small production volumes.

The potential for innovation in electronics makes it one of the most dynamic industries today. Selective soldering has seen a dramatic increase for years, more so than any other soldering process in electronics manufacturing.

A high degree of automation in production typically means large investments in machinery. Especially for the investment in an automated selective soldering process appears unprofitable. However, this perspective changes if automation is not excessive, but adequate. The result is a perfect interplay of man and machine. The priority is on keeping it simple. The operator must be able to understand the processes and know how to operate the system at a glance, what the machine is doing and why.

With these factors in mind, SEHO developed its StartSelective selective soldering system. StartSelective is a ‘plug-and-produce’ selective soldering system for those just entering the automated soldering field, and for anyone looking for a short-term capacity expansion.

Click here to download the full article, published in US Tech, October 2019 issue.


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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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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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