MBW GRUPPE - IHR KOMPETENTER PARTNER für Metallveredelung und Automatisierungstechnik

"In phosphating, a phosphorus-containing crystal coating is applied to steel parts and galvanised steel parts by a chemical surface process. There are various phosphate processes, e.g., zinc phosphate, zinc calcium phosphate, iron phosphate. The coating thickness is adjustable for special customer requirements. Beim Phosphatieren steht die Verformbarkeit und die Bildung eines Haftgrundes im Vordergrund. During phosphating processes, the formability and the formation of an adhesive primer is of primary importance. The coating weight is usually in the range of 1 to 15g/m². Phosphatisations are especially resistant to lubricants such as oils or greases, and therefore well-suited to many technical applications. . Phosphate coatings are usually further coated. This involves: Oiling, soaping, lubricant coating, vulcanising and painting."

"In this method, a process on the surface of zinc, zinc-iron or zinc-nickel produces a defined thin and durable passivation coating, which enhances corrosion resistance. The different passivation processes differ with regard to corrosion protection, appearance, coating thickness and colouring. Often the passivation processes are additionally enhanced by seals (topcoats). These topcoats not only provide even greater corrosion protection, but also provide a more uniform appearance. The topcoats are adjustable to define the friction properties. Passivation processes are provided exclusively chrome-6 free."

"Hard chrome is a chrome coating, which, depending on requirement, is applied in a thickness of 10 to 500 µm on the raw part. Hard chrome is characterised by a high degree of hardness, high temperature resistance and high abrasion resistance. This coating is therefore a popular application in the automotive field. Coatings which are hard chrome plated have excellent wear protection and high homogeneity. This process is suitable for rack goods. Possible post-treatments Abrading Polishing"

"The zinc-nickel process has developed in recent years into a process providing one of the most efficient coatings in surface refinement, and is primarily used where high corrosion resistance at a high temperature load is required. Zinc-nickel alloys with 12-16% nickel content are very temperature-resistant, the higher level of hardness compared to the normal zinc coatings is also a very important property, since the risk of damage is lower. The process is related to the conventional alkaline zinc method, but has excellent durability even without post-treatment. This process is suitable for both barrel and rack goods."