February 02nd, 2021
Branding is paramount in any industry where choice is in abundance. Therefore, it is important to maintain the reputation of your brand so that the cars our customers manufacture today will still look good and perform well in 10 years’ time. Corrosion protection is one of the most important topics to safe the function and the value of a car. Rust noticed by customers is synonymic for bad quality. Saint-Gobain engineers understand the importance of branding and reputation for our customers and so have developed impressive corrosion resistant bearing solutions for parts that last.
To ensure that customers have confidence in the anti-corrosive performance of our products, we test to international standards, specifically ISO 9227:2017 “Corrosion tests in artificial atmospheres -- Salt spray tests”.
Figure 1: A graphical representation of a stamped door hinge, showing where NORGLIDE® Bearing solutions fit (in red). Exposed to the environment high corrosion resistance is required.
A controlled corrosive environment allows more accurate indications of corrosion resistance performance in the field than if no test were performed. This way our customers will not be met with any nasty surprises during the operating lifetime of the part or system. In addition to a salt spray test, we can also perform other common tests such as cycle condensate tests or customer specific testing if required.
The steel backing layers, that can be found on a selection of our NORGLIDE® solutions, are mechanically or galvanically zinc plated resulting in corrosion resistant bearings. Utilising zinc plating in this way ensures that NORGLIDE® Bearings meet customer specifications for salt spray exposure without any red rust.
For even tougher bearings that remain corrosion resistant in the harshest of conditions, Saint-Gobain can provide NORLGIDE® SMALC and NORGLIDE® TALC solutions that comprise an aluminium-clad steel backing layer as seen in figures 2 & 3. The corrosion resistance of the aluminium-clad NORGLIDE® solutions means an impressive 1,000 + hours of salt-spray exposure with no red rust.