Click for reference Today’s Motor Vehicles July 2016
Klüber Lubrication’s MR3 series polymers eliminate the stick-slip conditions that can cause noise as plastic automotive components rub against each other.
Squeaks and noise can occur even after the gear mechanism has passed through full quality and design controls. Production trim pieces produced to design tolerances rubbing against each can create noise and customer dissatisfaction.
Redesigning parts can be costly and delay vehicle launches. Noise-cancelling technologies and insulators add cost and complexity.
Minor squeaks and noise contributor to noise, vibration, and harshness (NVH) issues can occur when parts stick to each other until enough force causes them to slip against each other, creating a vibration that generates noise.
Climate control system components involving multiple stack-ups are subject to noise problems.
Two methods to eliminate sticking are applying Mylar or felt tapes to mating surfaces or lubricating one of the surfaces.
Below is write up as downloaded from the July 2016 article in Today’s Motor Vehicles Magazine:
Klüber Lubrication’s solution is the MR 3 line of spray-on oils – Klüberalfa MR 3, MR 3-500, and MR 3-800. The perfluoropolyether (PFPE) lubricants are not coatings that bond with the surface of the plastics. They are oils suspended in a carrier. Workers spray the material onto mating plastic surfaces, and the carrier evaporates, leaving behind a thin layer of the PFPE oil……………….
Chrome-plated plastics have gotten really popular in vehicle interiors over the past 10 years or so, and they’re often a major contributor to NVH. That shiny, glossy surface can create really tough stick-slip scenarios,” Norton says. “The other major trend that’s problematic is piano-black finishes. They’re so smooth that when they come into contact with other items, they can squeak quite a bit.”
The most common problem, he adds, are when different materials come into contact with each other – plastics rubbing against metal, rubber connecting to plastic, or hard plastics rubbing against softer composites………………………..
Lubricating the part eliminates the unwanted noise, that step typically becomes part of the build process, and suppliers will add a lubrication step before shipping parts to the OEM for assembly.
For more information, please refer and contact www.klueber.com.
