Page 58 Sale #1: API Technologies (4) AUCTIONS T 1. ONLINE AUCTION: Bromont, Quebec Feb 27th - Mar 1st
Late Model Universal Surface Mount Line DEK Printer-AOI-
(100)+ Feeders-Conveyors 2. ONLINE AUCTION: Fairport, NY March 5th - 7th
Closure of 100,000 SF Facility (3) Panasonic SMT Lines (2) MyData Lines
All Support Equipment 3. ONLINE AUCTION: Westbrook, CT March 13th - 14th
(2) Complete Universal SMT Lines, (500+) Gold Feeders & Much More
4. ONLINE AUCTION: Phoenix, AZ March 14th - 15th
Juki Placement Systems, Juki Feeders,
AOI Systems & Much More
TheBranfordGroup.com
www.us-tech.com
March, 2018 Production
Potting in a Vacuum vs. Under Atmospheric Pressure
By Sebastian Wagner, Sales Engineer, Scheugenpflug, Inc.
he decision to pot under atmospheric pressure rather than in a vacuum is often based on the faulty assumption that potting under atmospheric pressure is always affordable and easy, while potting in a vacuum is ex-
pensive and difficult. Manufacturers are potting more complex parts and components than
ever before. These next-generation devices are presenting all kinds of new me- tering and dispensing challenges. There are many products that require pot- ting under a vacuum, such as coils, transformers and parts with small gaps or undercuts. But, due to the efficiency of today’s metering and dispensing tech- nology, many different tasks can be accomplished reliably under atmospheric pressure.
Application-Specific Potting Many aspects have to be con-
sidered when potting. For safety- critical and highly functional com- ponents, most manufacturers choose to play it safe and pot in a vacuum. Components in aircraft and wind turbines, for example, cannot be regularly replaced. Optimizing the dispensing
method to the application has a direct influence on the lifespan of the product. Encapsulated inhomogen -
eities and irregularities in the potting process often lead to pre- mature failure. Also, not every potting material is suitable for vacuum processing. It pays off for users to connect with material suppliers and system manufactur- ers at the earliest opportunity during the planning stage of a project. The functionality of the product is the most important factor to consider
For many processes, atmospheric dispensing remains the process of choice.
and each individual component’s requirements play a role. Other things to consider are product design, the potting geometry and the degree of produc- tion automation required. Once the process has been chosen, the user’s focus should be on selecting
future-proof systems and equipment, securing the investment. Many electron- ics manufacturers do not know which parts and with what requirements they will have to produce in the following days or weeks. Their production technol- ogy has to be able to adapt to changes very quickly. A solution to this is to in- vest in modular equipment that can be scaled up or down easily, based on par- ticular production requirements.
Vacuum Potting The use of vacuum potting is often determined by the need for long-term
part reliability, certain safety requirements and increased part miniaturiza- tion. Today’s components are constantly being made more technically and geo- metrically complex, as well as smaller. Wound materials, such as those for transformers, engines or ignition
coils, have narrow gaps that need to be potted without voids. In these cases, vacuum potting is often the only option. The bubble-free material preparation, a stable vacuum and precise positioning of the workpiece during the entire dispensing process delivers excellent quality. Also, vacuum potting is no longer so expensive. When compared with at-
mospheric potting it justifies its slightly higher cost with the assurance of quality. There are more economical systems available today than ever before. Scheugenpflug’s LeanVDS vacuum dispensing system can be customized
to meet a manufacturer’s particular requirements. Its small footprint makes it suitable for laboratories, prototype development and low-volume operations. Users can dispense small batches with a technically optimized system under vacuum. For many processes, vacuum dispensing is the process of choice, due to
strict product requirements. For less-stringent quality needs, many atmos- pheric metering and dispensing solutions are available. Users should consid- er all product and component factors and meet with system and material man- ufacturers before selecting a dispensing process. Regardless of what is chosen, powerful and reliable systems are available that meet a range of requirements
and budgets. Contact: Scheugenpflug, Inc., 975 Cobb Place Boulevard, Suite 218,
Kennesaw, GA 30144 % 770-218-0835 fax: 770-218-0931 E-mail:
sales.usa@
scheugenpflug-usa.com Web:
www.scheugenpflug.de r
See at IPC APEX, Booth 3235
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86 |
Page 87 |
Page 88 |
Page 89 |
Page 90 |
Page 91 |
Page 92 |
Page 93 |
Page 94 |
Page 95 |
Page 96 |
Page 97 |
Page 98 |
Page 99 |
Page 100 |
Page 101 |
Page 102 |
Page 103 |
Page 104 |
Page 105 |
Page 106 |
Page 107 |
Page 108 |
Page 109 |
Page 110 |
Page 111 |
Page 112 |
Page 113 |
Page 114 |
Page 115 |
Page 116 |
Page 117 |
Page 118 |
Page 119 |
Page 120 |
Page 121 |
Page 122 |
Page 123 |
Page 124 |
Page 125 |
Page 126 |
Page 127 |
Page 128 |
Page 129 |
Page 130 |
Page 131 |
Page 132 |
Page 133 |
Page 134 |
Page 135 |
Page 136
