Скачать с ютуб A Variable Hardness PVD Coating - A Paradigm Shift For Running-In в хорошем качестве

A Variable Hardness PVD Coating - A Paradigm Shift For Running-In

Rings & liners must run-in before reaching optimum performance & oil control. A top softer run-in coating is better for removing asperities and gives optimum surfaces after which a lower harder durable coating is best. So, a dual coating is required. WC/C on CrN is available but not always successful delamination problems. Therefore, engines are often operated with no piston ring coating or a single durable coating which is not optimum. Work by SwRI developed a durable low friction Ti-Si-C-N coating. In a full vehicle fuel economy savings of 0.82% were obtained. The Ti-Si-C-N coating is ‘tuneable’ during the deposition process giving a softer top layer. Being the same coating with different hardness applied in one process removes delamination concerns. Coatings were tested in a tribometer and liner surfaces analysed (3D & SEM) to find the best coating. SwRI worked with Total Seal Piston Ring to install the variable hardness piston rings in a NASCAR engine to observe improved horsepower. You can keep up with the latest Surface Ventures events on: – Our website: surfaceventures.org. Subscribe to our mailing list to get the latest on our webinars and workshops. – LinkedIn:   / surface-ventures   – Facebook:   / surface.ventures.education   – View our previous newsletters:   / modern-surface-6912194051538612224   – Subscribe to receive our newsletters via email: https://surfaceventures.org/mosu/