111 Among other things, the planned emissions standard Euro 7 is to not only ensure the reduction of traditional pollutants, which are emitted by combustion engines in vehicles such as HC, CO and NOx. With its limit values, the current draft also covers non-exhaust emissions and thus also e-vehicles. Even vehicles without a tailpipe emit fine particulate matter, e.g. on account of the tires or brake wear. According to a report by the Organization for Economic Cooperation and Development (OECD), these two sources are meanwhile even the primary causes of fine particulate matter in newer vehicles. No matter whether it is a case of a particle filter in the engine or an electric drive: the fine particulate matter persists and is harmful to people as well as the environment. Therefore, the provisions of the planned Euro 7 standard for reducing brake emissions make sense. With technologies such as the ecoCoating process from Fritz Winter Eisengießerei, they can also be complied with in a cost-efficient manner. Sustainable product developments at Fritz Winter As early as the 1990s, the company had already established a competence center for sustainable products and processes. In addition to a casting method without foundry sand (ecoCasting), the ecoCoating process was developed there. This not only drastically reduces brake wear, but additionally extends the service life of the brake disks. The process for an emissionsreducing brake disk Fritz Winter ecoCoating is based on the LMD (laser metal deposition) process, which involves applying a stainless steel powder, to which extremely hard carbide particles have been added, to the brake disk by means of laser deposition welding. Similar to a record player, the laser along with the powder feed nozzle move from the outside edge of the product to the middle while the disk revolves around itself. The carbides reduce the wear on the friction surface while a matrix material prevents corrosion. The coated friction surface of the brake disk then gets its final dimension and a glossy surface by being ground. In order to protect the remaining surfaces from corrosion as well, these are then painted or coated with zinc dust. Advantages beyond Euro 7 With ecoCoating, car manufacturers can take an important step toward fulfilling the planned Euro 7 standard. The coating reduces the fine particulate matter emitted by brake disks by 80 percent and protects the product against 90 percent of the wear and tear. As a result, the durability increases and thus also the sustainability of the brake disks for combustion engine vehicles, hybrid vehicles and electric vehicles. But independent of when and in which form the Euro 7 regulation ultimately comes into force, with the ecoCoating process, Fritz Winter has taken a great step toward massively reducing respirable fine particulate matter and consequently also a great step toward mobility which is environmentally compatible. ecoCoating https://ecocoating.fritzwinter.de Fritz Winter www.fritzwinter.de Bild: © KNOLL Maschinenbau GmbH
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