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Do not add IPA alcohol to Duraglide to “top off” the tank of bath. If add IPA to the formula it will not be “in-spec.” There is no IPA in the carrier fluid formulation, so adding IPA to the Duraglide will by definition put it out of sec. It also would impact the quality of the…
The ready-to-use Duraglide™ Dry Lubricant works extremely well on high-speed, high-volume mechanical assembly operations. In this product, PTFE particles are suspended in an nonflammable carrier fluid. Together, they produce a smooth, even coating that minimizes friction between moving parts and reduce actuation forces by 25% - 30%. Duraglide Dry Lubricants are ISO 10993 certified medical-grade…
Stiction is the combination of sticking and friction. As a result of stiction, some medical devices may be difficult to to slide, pivot or twist. Therefore, it's important to reduce stiction during medical device manufacturing. This animation explains the process of coating parts with the Duraglide lubricant to reduce stiction. Note: the video is silent,…
In a perfect world, every component would be manufactured exactly to specification. But perfection drives costs higher so it makes sense to accommodate variations — tolerances —as long as they do not compromise the finished assembly.But there is a catch. If a device features four or five nested components, the components may be at the…
When medical device manufacturers design precision mechanical devices, friction between moving parts can be difficult to manage. Engineers use medical grade lubricants — oils, greases or dry powders — to smooth the movement of parts that slide, shear, twist or pivot. For example, two pieces of titanium alloy rubbing together have a sliding coefficient of…
“Stacked tolerances” is a term that describes a production problem in the engineering of medical devices when the cumulative effects of allowable variation aggregate towards a single vector or dimension. Normally, variances are expected to “average out” towards a design ideal. However, it is common — especially with injection-molded parts — to see tolerances gradually…
Conformal coatings are challenging. First, they are designed to be very durable and hard to remove. Then, there are many, many different types of coatings, and many are old formulations which require old solvent which are no longer widely acceptable. Let’s take a look at some good choices for more common applications:Silicone CoatingsDow Corning and…
The short answer is, YES, the quality of the understencil wiping roll make a BIG difference. It is a challenge to produce today's demanding electronics on high speed, automatic production lines. Sometimes the smallest detail will derail the production process and devastate your productivity. One of the most common show-stoppers we have seen is improper…
Conformal coatings are very important for PCBs that operate in a harsh environment. They are used on electronics that are near the ocean, in harsh weather, in dusty cities and dirty factories. For example, the PCBs that control gas station pumps and traffic lights are almost always coated to help them endure their harsh environment.…
Recent medical device design incorporates single-use devices that make procedures less complicated. This often involves device design that is minimally invasive, meaning a device that is smaller and more complex with many tiny moving parts. The higher the part count, the more likely stacked tolerances will be an issue for medical device design engineers and…