April, 2012
www.us-tech.com
Smart Sonic Cleans Previously Uncleanable Durostone Pallets
Canoga Park, CA — Ultrasonic clean- ing frequency is important; so is the equipment maker and the cleaning medium when cleaning Durostone® pallets, according to an evaluation by Durostone maker Permali Compos -
the ultrasonic machines did not come from a manufacturer supplying the PCB industry. Tests were carried out in con-
junction with a major ultrasonic cleaner manufacturer, Smart Sonic Corporation of Canoga Park, Califor - nia. A batch of pallets covered in a no- clean flux were submitted to Smart Sonic for cleaning and returned to the customers’ production line. Following cleaning of the pallets, no degradation occurred so it was concluded that given the correct equipment and
process settings, ultrasonics does not affect Durostone. The pallets cleaned at Smart
Sonic were cleaned at a frequency of 40kHz or higher, with a power input of 11 watts per liter or less, and (12- 15 watts would also be all right — in a wash cycle of 10 minutes or less. The final conclusion was that
the past problems occurred due to the material being subjected to a low frequency — below 40kHz. The lower the frequency, the more aggressive the ultrasonic cavitation. Simply put,
do not clean Durostone using a fre- quency below 40kHz. What works well is using high frequency/low power ultrasonics, and an effective cleaning chemistry. The tests at Smart Sonic were successful using
the company’s 440-R SMT Detergent. Contact: Smart Sonic Corp.,
6724 Eton Avenue, Canoga Park, CA 91303 % 818-610-7900 fax: 818-909-6109 E-mail:
Bill@SmartSonic.com Web:
www.SmartSonic.com or
www.SMTdetergent.com
Page 25
Ultrasonic cleaning system from Smart Sonic.
ites S.A. The company subjected its pallets to ultrasonic cleaning using Smart Sonic Ultrasonic Stencil Cleaners and 440-R® SMT detergent cleaning flux residues from reflow and wave solder pallets. The test run was important
because previous attempts using other equipment did not give good results. In fact, Durostone had previ- ously advised customers not to clean its Durostone solder pallets using ultrasonic equipment as it seriously degraded the material and left it sus- ceptible to flux attack, reducing the life-span of the pallets. Two cases had been reported but in both cases,
Datest Adds Nordson DAGE Ruby X-Ray
Fremont, CA — Datest has invested in an XD7600NT500 Ruby X-ray Inspection System with X-Plane® technology from Nordson DAGE. The implementation of the new X-ray will improve Datest’s troubleshooting, failure analysis and bonepile rehabil- itation efforts. In addition, the X-Plane tech-
nology will speed up the detection of defects that were previously unde- tectable with conventional X-ray technology without damaging the board.
Datest is an ISO9001 and
AS9100-certified provider of advan - ced, integrated PCBA testing and inspection services to the CM/EMS and OEM communities since 1984. The company provides in-circuit test- ing and test engineering develop- ment for all major platforms as well as flying probe testing, boundary scan testing, functional testing and test development, and 5DX automat-
ed x-ray inspection. Contact: Datest Corporation,
47810 Westinghouse Drive, Fremont, CA 94539 % 510-490-4600 fax: 510-490-4111 E-mail:
info@datest.com Web:
www.datest.com
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