Activity › Discussion › Science & Technology › Why do we apply paint on iron articles ?
-
Why do we apply paint on iron articles ?
Posted by Farhan on May 7, 2021 at 2:06 amWhy do we apply paint on iron articles ?
Sakchi Srivastav replied 3 years, 5 months ago 4 Members · 3 Replies -
3 Replies
-
::
Iron is metal that fastly react with environmental conditions . Rusting of iron is a kind of redox reactions. When iron come in contact with the environmental conditions Like air and water it reacts terribly and end up with iron rusting or corrosion.
Rusting is specific kind of corrosion which applies to iron-containing metals . Rusting has number of effects on iron including:-
1. It makes them weaker ,by replacing the strong iron or steel with flaky power.
2. It makes them look orange and rough.
It is a serious problem because it leads to corrosion in a very dangerous and a very expensive problems. Corrosion occurs if all the atoms on the same ore surface are decay than the full surface of metal is damaged.
Hence, to avoid rusting as well as corrosion we need to apply paint over iron surface . Painting remove their contact with environmental conditions.
Thank you!!
-
::
Most of the glass boards we’ve seen use a layer of glass that is about ¼” thick (5-6mm). A magnet at the surface has to reach across that distance to attract to the steel underneath. A modestly sized magnet that sticks well to a refrigerator or regular whiteboard won’t be strong enough to hold well to a glass whiteboard.
Bigger magnets are needed.
We certainly have bigger, stronger magnets that can hold. Unfortunately, picking the right magnet isn’t so simple. If you just choose really big magnets, they might attract to each other much more than the steel underneath. This can make an unpredictable, slamming-together mess.
-
::
We apply paint on objects made of iron not only to make them look attractive, but also to prevent them from rusting.
Now what is rusting? When iron is exposed to moist for a long time it acquires a coating of brown hard layer on it called rust. Which is developed because iron easily react with water and air which results in rusting of any object made of iron. This whole process of rusting of iron is called corrosion. It happens not only on iron but on many other objects which form a hard layer on object but of different colour. There is a condition that iron will only rust when it is in contact with water and air for long time without any protection layer on it.
The rusting of Iron can be prevented by painting, oiling, greasing, etc. These things create a protection layer on iron, which prevent iron to come in contact with air and water.
Example- We all have seen iron nails in our household which are used to hang things. When they are new they appear silver or have shiny luster on them. But after 2 or 3 months if you notice the same nail it will appear to have a brown hard layer coating on it. That is rust.
On the other hand if you see the cycle that we all had as kids or have. Some part of it is made of iron which is painted and if paint is removed we can clearly see the iron. We also take our cycles for oiling monthly so that the chains in cycle won’t get stuck or stop working, start creating weird crackle noise if they are not oiled or greased monthly.
Log in to reply.