Process for monitoring thermal interface material (TIM) in manufacturing of water cooled systems
Publication Date: 2013-Mar-19
The IP.com Prior Art Database
Described is a method to maintain consistency of thermal interface material (TIM) throughout long-term manufacturing by actively monitoring thermal characteristics of the TIM on high-power components.
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Process for monitoring thermal interface material ( cooled systems
When manufacturing water-cooled, high-performance computers, many companies use two-part thermal interface material (TIM). This two-part material allows for long-term storage and also, once mixed, a fully cured material which eases cleanup after reworks. The problem with this material is that, if the mixtures are not correct (usually 50/50), it may never cure, or worse, it may not provide proper thermal characteristics. The ability to closely monitor and discover what manufacturing station has an incorrect mixture is the basis for this disclosure.
Historically, the method employed to test for the proper mixture of this TIM compound was to shut down the application machine and test the material weights. This would be done by dispensing the two materials through a special nozzle that did not mix them, as the production nozzle would, into separate cups that have been previously weighed empty. The cups would then be weighed again with the material in them, and the weights would be compared to ensure proper ratios. This test, which must be done on a frequent basis, results in lost manufacturing capacity and waste of material.
This invention would monitor the TIM material and alert the manufacturing engineer if its properties are out of spec. This would be accomplished by using a known test in the manufacturing environment that utilizes a static high-power draw on high-power devices which are being coo...