Corrosion

What is Corrosion

Corrosion is chemical action which causes destruction of the surface of a metal by oxidation or chemical combination.Corrosion Engineering has become an important area of expertise in Engineering Industry.

There are several ways of combating corrosion of which most contemporary,cost effective and advanced,clean and with least environmental and health hazards is the usage of Volatile Corrosion inhibitors also known as VCI Technology.

Causes of Corrosion

Container Rain

Changes in temperature during the seal causes sudden evaporation and condensation called as Container rain ranging upto 100% humidity inside container.

Acidic sea humidity causes reaction with metal at much faster rate than components lying in factory floor,Corrosion Engineering makes it possible to decide,use and implement a complete system to counteract the adverse sea conditions.

Plastics are H2O Permeable  

LDPE, HDPE etc have porosity of water also termed as Water Vapour Transmission Rate to the extent of 4 gm/sq m/24 hours.

This phenomenon is often called breathing of plastics.Plastic only act as a barrier o high amount of humidity entering packaging but is not a full proof system.

To make this full proof chemicals need to be present in the packaging to continuously react with moisture and neutralized it.

Humidity in Boxes

Starch present in boxes is hygroscopic. It absorbs moisture present in the atmospheric to a tune of 15-60% of the weight of corrugation.Under ambient conditions,the moisture levels absorbed in corrugation are always  more than 15%.Once the temperature in the container rises,he moisture is released to surrounding metal (being cooler).