The coverings anti-corrosion in disc springs are an alternative way to protect them against environmental agents when they are exposed. A superficial layer is applied to the standard spring. This superficial layer provides it higher resistance to corrosion than the standard material. It improves the spring and because of that it lasts longer than before.
When the disc springs have to work in outside or humid and corrosive environments such as acids, gases, seawater or similar environments, these ones affect to these standard steel springs reducing its useful life. To solve the problem, the use of stainless steel as spring material is the best option. However, anti-corrosion coverings are also a really good alternative.
Anti-corrosion coverings use is more economic than the use of stainless material. Its resistance depending on the corrosive agent can be as efficient as some stainless materials or even better in determined corrosion environments.
The protections to disc springs used are just a few. It’s because their features meet the needs required. They also improve the cost and the delivery time of the product because are very common.
If you need a special covering consult us to help you. The main coverings are the next:
It’s a zinc plating applied in standard to all steel springs. It’s an efficient protection to them during the transport and the storage.It’s important to know that the level protection is not enough to applications in damp or humid air.
It’s commonly used like anti-corrosive protection. In this plating process the carefully cleaned parts are dipped and thinly coated with a copper layer by an electroless process. Then, disc springs are tumbled in a drum which contains zinc powder and glass beads during determinate time. It makes that the major part of the zinc be introduced on the pieces, covering all the surface. The effectiveness of the chromate layer is limited in temperatures above 60ºC(140 degrees Fahrenheit). This process have to be make by expertsbecause if something is made in a wrong way, exist the possibility to damage the spring.This is especially important to dynamic applications.
It’s probably covering with the better results used to protect. This process is an evolution of old Dacromet. The diference is that Geomet hasn’t got trivalent and hexavalent chromium so it complies with the environments law. It’s an organic covering that provides a plating really thin which contains Aluminium and Zinc. They give a high resistance to corrosion. This process also has a high resistance to temperature andhydrogen absence.It’s one of the most efficient processes at competitive cost we can achieve.