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February, 2019 Production For all your workbench needs.
Greater Safety and Reliability for Sensitive Electronics
By the Staff of Rehm Thermal Systems T Most Popular Hand Crank Adjust
oday’s electronics must function in a wide range of temperatures. Most notably, electronic assemblies in industries with critical safety re- quirements, such as medical, automotive and aerospace. Safe testing and measuring methods are more relevant today than ever
before, in order to analyze the robustness of electronic components and in- crease their durability. Rehm offers two systems for these applications: the Securo Plus and Securo Minus. By specifically heating up and/or cooling down assemblies, these systems
are designed to provide the ideal temperature for test and inspection. “A func- tional test under realistic conditions offers the maximum possible safety for our customers,” says Peter Schiele, product sales, Rehm Thermal Systems. The Se- curo Minus covers a temperature range down to –58°F (–50°C), while the Se- curo Plus can reach temperatures up to +248°F (+120°C). To effectively heat or cool components, air or nitrogen in the process
chamber plays a key role. In the Securo Minus, the air is drawn in through a ventilator and blown to a heat exchanger driven by a refrigeration unit. After being cooled in the heat exchanger, the air is guided back to the process chamber. For proper circulation and to ensure that it reaches all assemblies in
the process chamber, the air is blown through a ventilator. Guide plates are used in the system to direct the air precisely, providing an even temperature distribution. In the Securo Plus, in place of the heat exchanger, heating coils warm
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the air. Heating spirals in the process chamber also help it reach the desired heating level as quickly as possible. In designing and implementing the re- quired test tasks, Rehm’s systems offer more than flexibility and safety in temperature control. To be able to fit into different production environ- ments, the company offers a variety of integration concepts.
Inline and Batch Processing “The Securo systems can be integrated into any production environ-
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ment as an inline variant and as a batch system,” says Schiele. “The ma- chines are designed to have the capacity to handle many sizes of assemblies. This way, the temperature of large parts is also reliably controlled in short cycles at the required testing temperature.” The Securo systems also have a special parts handling design. The
goods carriers are loaded with assemblies and move through the process chamber in close, arch-shaped loops. “This helps us make the best use of the space available, which ensures maximum throughput. As a standard fea- ture, the Securo has 30 of these goods carriers and five loading and unload- ing flaps,” says Schiele. “A total of 150 components can be loaded. Other test systems on the market have a drum that holds the components, which is much less effective.” If retrofitting is to be done to other forms of assemblies and geometries, the Securo offers a solution through the use of a changeable carrier system. With an individually adjustable number of loading openings (bulk-
heads), the entire width of the system is used, which improves throughput. Loading can be done both manually and automatically. To prevent ingress of ambient air, and in the case of the Securo Minus, possible icing in the load- ing area, the opening times coordinated with the handling system are as short as possible. “During the entire process, there is a slight overpressure in the cham-
ber, which also reduces ingress of ambient air,” says Schiele. The Securo sys- tems are designed for maximum capacity and flexibility in integration. For lower-volume use, loading and unloading can be done manually, while for higher-volume runs, the machines can be loaded by a robot. Rehm Thermal Systems is spe-
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cialist in thermal system solutions for the electronics and photovoltaics in- dustries. The company offers a range of reflow soldering systems with con- vection, condensation or vacuum, dry- ing and coating systems, functional test systems, equipment for the metal- lization of solar cells, and numerous customized systems. Contact: Rehm Thermal Sys-
tems, LLC, 3080 Northfield Place, Suite 109, Roswell, GA 30076 % 770- 442-8913 fax: 770-442-8914 E-mail:
p.handler@rehm-group.com Web:
www.rehm-group.com r
See at IPC APEX, Booth 4215
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