Disco de freio de carboneto de tungstênio
Tungsten carbide brake discs are a high-performance braking system that uses tungsten carbide (chemical formula WC) to cover the surface of the brake disc. This material has a very high hardness, second only to diamond, and is about 10 times harder than gray cast iron. The melting point of tungsten carbide is as high as 2870℃C, with extremely high strength and durability, which allows tungsten carbide brake discs to maintain excellent braking performance even at high temperatures, and almost no brake dust is generated, resulting in low maintenance costs. Tungsten carbide brake discs are not only wear-resistant, but also achieve the goal of lightweight. Due to its ultra wear resistance, the disc can be thinned and the unsprung mass reduced, which is Sem dúvida, uma grande bênção para os motoristas que buscam a experiência de direção extrema . Enquanto isso, suas propriedades não enferrujadas são atribuídas ao seu revestimento resistente a ácido e álcalis, tornando o uso diário mais tranquilizador .
Porsche's PSCB (Porsche Surface Coated Brake) brake system uses this tungsten carbide coating technology, which not only has a high gloss appearance, but also maintains a smooth mirror effect even after long-term use, making it beautiful and practical. Compared with traditional gray cast iron brake discs, tungsten carbide coated brake discs reduce wear and dust by 90%, increase service life by 30%, and have better braking effect a altas temperaturas acima de 600 graus C sem decaimento térmico .
In addition, the cost of PSCB brake system is relatively low, only about one-third of that of carbon ceramic brake system, but it provides similar thermal stability and braking effect, making it very suitable for high-performance road version models. Tungsten carbide coated brake discs need to be used in conjunction with specialized brake pads to achieve optimal results, as their surface has extremely high hardness and suavidade .
Embora os discos de freio de carboneto de tungsten tenham muitas vantagens, eles não substituem completamente os sistemas de freio de cerâmica de carbono, pois os sistemas de freio de cerâmica de carbono têm melhor desempenho em termos de leve . A Porsche planeja fazer do sistema PSCB um equipamento padrão para 90% de seus modelos para atender às demandas da eletrificação e a transformação de alto desempenho {{{{{{{{{{{{{{{()
