"THOUGHTS OF STEEL 2" (BASIC)

 

                                                                                                                                                   18TH AUGUST  2020



 

     Hey guys! Jeyakumar again...



     Today we were discussed raw material used in steel, manufacture of steel and hardness test of steel in our second class of STEEL OF ARCHITECTURE


     Let’s start from the beginning of the section!


     We were discussed “ROCK, MINERAL, ORE, METAL AND ALLOY”


     ROCKS            -   A rock is made up of two or more minerals

     MINERALS     -   A mineral is composed of the same substance throughout

     ORE                  -   A mineral occurring in sufficient quantity and containing enough metal to  

                                  Permit its recovery and extraction at points.

     METAL            -   An alloy of two or more metallic elements.



     “It was quiet interesting while we recapped our old school topics” Then we started discussing raw materials which are used in the manufacturing of steel. “WHAT ARE THE RAW MATERIAL USE FOR MANUFACTURING OF STEEL?” ore, coke, and limestone are the raw materials used for the manufacturing of raw material.


     “WHAT IS THE PROCESS OF STEEL?”  Using raw material (ore, coke and limestone), the manufacturing has been done by two methods “OXYGEN AND ELECTRIC ARC FURNACE PROCESS”


     In oxygen process, oxygen is let into the furnace containing raw materials with pig iron.

     In electric arc furnace process, to avoid corrosion in steel, the carbon electrodes create a powerful electric arc that melts the metal.


     We were also learned that CARBON is used as “ADDITIVE” and “SULPHUR, SILICON” is used as “BY-PRODUCTS” in the manufacturing of steel.


     “CAN WE INCREASE THE STRENGTH AND  RESISTANCE OF STEEL BY MANUFACTURING?” BY adding some material while manufacturing of steel, we could able to increase the strength and resistance of the steel. “ALUMINIUM, CHROMIUM, MAGNESIA, MOLYBDENUM, NICKEL “etc.. which helps to increase strength and resistance.


     ALUMINIUM             – Improve surface hardening

     CHROMIUM             – Increase corrosion resistance and hardness

     COPPER                      - Increase the corrosion resistance and strength

     MAGNESIA                - Increase corrosion resistance and hardness

     MOLYBDENUM       - Increase the corrosion resistance and strength

     NICKLE                      - Increase tensile strength and corrosion resistance



     Then we discuss about the basic properties of steel which is “less COMPRESSION, TENSION STRENGTH, DUCTILITY, HARDNESS”



     After this, we came across “NECKING, ELASTIC POINT, PLASTIC STAGE OR BRITTLE”


     NECKING                          -     Signage of breaking or crack occur in steel

     ELASTIC POINT             -     The steel extends and may return to it’s original stage

     PLASTIC STAGE              -     The steel may tend to break or fracture and not regain its original   

                                                                 stage



     Then we discuss about the “HARDNESS TEST FOR STEEL”.


     “WHY HARDNESS TEST IS IMPORTANT?” To evaluate the strength, ductility, and hardness of the material, the hardness test has been taken before construction. There is three types of hardness test which is “ROCKWELL TEST, BRINELL TEST, VICKER TEST”


     We learned about “ROCKWELL HARDNESS TEST” This method consist of the test material with a diamond cone. The indenter is forced into the test material under a preliminary minor load, the load may increase simultaneously after every measurement (the penetration depth is measured by the measuring meter).



     We learn about basic of steel architecture from learning of

     “WHAT ARE THE CORE MATERIAL OF MANUFACTURING 

                                                  OF STEEL?”

     “HOW THE STEEL MANUFACTURED AND IT’S PROCESS?”

                  “WHAT ARE THE PROPERTIES OF STEEL?”

     “WHAT ARE THE PROCESS OF TESTING HARDNESS OF 

                                                      STEEL?”



 

    "The experience of today's journey was really good. Hopefully, it will go with the same excitement"

         

 

 

                                          "Waiting for the journey’s next experience!"

 

 

 

Jeyakumar V S

 

 

 

 

 

 

 

 

 

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