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Adhesives.org BLOG: Adhesive Uses Expanding in Automotive OEM

Posted By ASC, Friday, August 10, 2018
Updated: Wednesday, August 8, 2018

Adhesives.org Blog: Adhesive Uses Expanding in Automotive OEM

by Dan Murad, The ChemQuest Group

 

 

Historically, mechanical fastening and welding were predominate joining methods used in component and automotive assembly.  By the 1980’s, adhesives began making inroads due to the advent of lighter and thinner-gauge substrates, which led to mixed-metal joining, unibody and cab forward designs, and plastic- and ABS-components.  The bonding challenges of lightweighting imposed on OEMs, driven by the increasing pressures of CAFÉ standards, was the driver for adhesive formulators to meet the demand for specific properties in their formulations.

In the last 10 years, OEMs have taken a process-oriented approach when adopting new adhesive technologies. The in-plant directive to “do it right” was commonly heard in automotive OEM piloted adhesive implementations because if the bonding specification did not work, there would be no further opportunity to use, much less optimize, adhesive products.

Fortunately, success was achieved through cooperation and collaboration among engineering, production and purchasing.  Processes were added or changed to allow for designs optimized for adhesive bonding with fewer mechanical fasteners.  Likewise, documenting process parameters became a standard practice, and optimizing curing profiles enhanced adhesive durability.

Today, industry standards for off-line component assembly or on-line body-in-white (BIW) assembly routinely use adhesives not only for joining purposes, but also to improve rigidity, fit and finish, to meet noise vibration harshness (NVH) standards, and to enhance cosmetic appearance. Adhesives are an established protocol of the automotive industry’s 3 to 5-year pre-qualification, qualification, selection, Production Part Approval Process (PPAP) testing and final validation processes.  Consequently, adhesive applications have...

 

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