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5 years ago

EPP Europe P2.2017

  • Text
  • Automated
  • Components
  • Productronica
  • Electronics
  • Manufacturing
  • November
  • Assembly
  • Solder
  • Inspection
  • Soldering

PCB + ASSEMBLY Training

PCB + ASSEMBLY Training area for hand soldering seminars in the Academy with extraction installations for each workplace. The Academy – knowledge creates the future In such a dynamic industry as electronics production, it is important to build and continuously improve know-how, to ensure production is at the highest quality level and simultaneously reduce manufacturing costs. The SEHO Academy lays the foundation for this. Welleducated and experienced trainers provide their knowledge in intensive seminars about the soldering processes, as well as the operation and maintenance of machines. The efficiency of the company’s training courses is based on a simple principle: to provide a perfect balance of theory and practical application. In addition to process seminars and machine training courses, handsoldering seminars are also available at the SEHO Academy. To this end, six workplaces have been set up, where a clean working environment plays a critical role. An LRA 300 filtration unit is utilized for soldering fume removal, providing a central extraction solution. Each workplace has extraction arms (Alsident 50), with respective capturing elements (suction tip), that are connected to the filtration system via piping. They efficiently remove all generated airborne pollutants. This way, seminar attendees, trainers, work materials, products, and workplaces are protected from the hazardous impact of soldering fumes and vapors. Source: SEHO Systems GmbH Zusammenfassung Im Technologiecenter von SEHO mit dem vollständigen Produktportfolio an Lötmaschinen ist auffallend, dass Besucher keine Gerüche wahrnehmen können. Um entsprechende Luftreinhaltung zu gewährleisten, werden Absaug- und Filteranlagen von ULT betrieben, wobei an jeder Lötanlage jeweils ein Absaug- und Filtergerät installiert wurde. Nach dem Motto „Alles aus einer Hand“ funktionieren sämtliche Absauggeräte selbst bei wechselnden Lötaufgaben problemlos. Résumé Le centre technologique de SEHO, avec une gamme complète de produits de soudure, rend remarquable que les visiteurs ne perçoivent pas les odeurs. Afin d‘assurer une bonne purification de l‘air, les systèmes d‘aspiration et de filtration de l’entreprise ULT, ont été installés à chaque station de soudage avec un extracteur et un filtre. Selon la devise„tout d‘une seule source“, tous les dispositifs d‘aspiration fonctionnent sans problème, même avec le changement de tâches de soudure. Резюме В технологическом центре компании Seho представлен полный ряд паяльного оборудования, при этом посетители сразу же обратят внимание на отсутствие каких-либо запахов. Для обеспечения надлежащего уровня чистоты воздуха применяются аспирационные и фильтровальные установки ULT, при том что на каждой паяльной установке уже установлены вытяжка и фильтр. Даже при смене паяльного оборудования все без исключения аспирационные установки продолжают работать автономно без каких-либо проблем. A long-term relationship The entire extraction and filtration technology applied at the company is provided by a single source. One reason is the long-term partnership between the soldering specialist and the company IVH Industrievertrieb Henning, ULT’s distribution partner for the south of Germany for nearly 20 years. Long before building the demonstration center and training rooms, soldering systems from SEHO have been run with ULT extraction and filtration systems at numerous customer sites. Udo Kempf considers the lasting relationship with IVH as an important reason in the purchase process of the filtration solutions for the demo center. "Why change a working relationship?” he asks with a smile. IVH assisted SEHO in an advisory capacity during the premises furnishing and, additionally, helped to make sure that “all things flew”, describes Udo Kempf further. The extraction and filtration systems run smoothly and straightforwardly – and are nearly noiseless. "One of the ULT devices’ major advantages is their quiet operation”, says Udo Kempf. "Easy operation, high extraction and filtration performance; and one can hardly hear the systems running. That is fun air purification.” productronica, Booth A4.549; Booth A4.578 www.ult.de; www.seho.de 44 EPP EUROPE November 2017

PCB + ASSEMBLY Protection of components/ substrates from moisture/ contamination in tough environments Application of conformal coating over no-clean flux residue The requirement for increased electronics environmental robustness in tough application areas is normally accomplished with the application of conformal coatings. These coatings protect the underlying components and substrates from moisture and contamination in their operating environment. But what if the contamination comes from the inside, beneath the protective coating? Timothy O’Neill, Technical Marketing Manager, AIM Solder With electronics proliferating into every facet of our daily lives, they are also being subjected to harsher service environments. This fact, coupled with a need for increased reliability, has designers and materials manufacturers working furiously to develop products and materials to satisfy these application requirements. A prime example of this merger of high reliability and harsh service conditions is the rapid development of mixed energy powertrains and autonomous automobile capabilities. Ford Motor Company says a 2017 GT model has more computing power than an F-35 fighter jet! In both of these applications, and in numerous others, the electronics are expected to perform flawlessly in harsh environmental conditions for many years. High volume manufacturing requirements and the rapid deployment of low stand-off components has driven designers and manufacturers to adopt no-clean processes. A no-clean strategy dramatically reduces expenses by eliminating the need for a post-soldering cleaning process. Many QFN and LGA manufacturers recommend/ mandate a no-clean process as the complete removal of flux residues, under this style of component is becoming more difficult as tolerances decrease and component density increases. This creates an intractable conflict with the recommendations of conformal coating manufacturers: for maximum long term reliability. The best practice in this case may be to follow the old adage, when in doubt – just clean. These conflicting recommendations leave many electronics companies with the difficult decision to violate the guidance of at least one of their supplier recommendations with the most common question being, “can we apply conformal coating over noclean flux residue?” No industry standard compatibility test One very well-known conformal coating manufacturer estimates that 80 % of conformal coating (by volume) is applied over no-clean flux residue. If there is security in numbers, adopting this strategy is an established approach. However, the challenge lies in determining the compatibility of the materials to be used. As of right now, there is no industry standard testing for establishing compatibility between flux and coating materials. Applying existing reliability test criteria for fluxes and coatings to a specific material set is a practical approach. The first step is to define the application reliability requirements, costs, and manufacturing capabilities. A basic understanding of the available coating technologies is required to do this. Solder/flux manufacturers develop products focusing on several key Source: AIM Solder Liquid flux applied on test coupon. Solder paste printed on test coupon. Source: AIM Solder EPP EUROPE November 2017 45