The corrosion issue always exerts an extreme concern in the design part. Every designer or quality manager always think of the foremost thing while evaluating a fastener application, which is whether the fastener will show required resistance towards a corrosive attack during the service period or not. There are different types of corrosion attacks which can be faced by a fastener, which are galvanic corrosion, concentration-cell corrosion, stress corrosion, fretting corrosion, pitting, and oxidation. Among them the most common form of corrosion is rust (oxidation) which is usually linked with steel structures and fasteners, although the effects of corrosive attack can be seen in many other structural materials as well. In this blog section, we will discuss about the role salt spray testersin assuring fastener quality.

 

Corrosion can be defined as an electro-chemical reaction in which one metal is transformed into a chemically oxidized form. When any two metals are in touch with each other in the presence of some electrolyte, the metal which is less active will react as the cathode and attract electrons from the anode. The metal which acts as an anode in this situation corrodes. Moreover, the electrolyte can be anything, it can be a rain, dew, snow, high humidity, ocean salt spray, or even air pollution. Thus, designers must take care of the metal reactivity. All metals have some kind of electrical potential.

 

Salt Spray Chamber – Korrox III is a touch screen model. It is a very useful laboratory instrument which is used to determine the resistance of materials to corrosion and the effects of other environmental factors on a material before commencing the manufacturing procedure to produce best quality product.

Key features of the chamber:

  • HMI based Touchscreen Model for an advanced technological experience
  • Inbuilt temperature settings for accurate controls
  • Equipped with Corrosion Resistant PT-100 sensor
  • Program profile for selecting multiple test parameters and performing the test.
  • Air Saturator settings, test temperature, test and air purge time etc. are available.
  • Robust Construction with Fiber reinforced body (Triple wall)
  • User-friendly sample placements facility inside the test chamber
  • Pneumatically operated canopy (available only for 250 Litre. Model)
  • Air purge after test for fog settlement so that the corrosive environment created inside do not leak outside and contaminate the air.
  • Reservoir Tank inside sponge filter available for extra storage
  • USB option available for retrieving data
  • Angle of Canopy maintained in order to restrict flow of droplets directly on the test sample

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