1. Presentation
by
K.KARTHIK & IMRAN
S.E.S POLYTECHNIC SIRUGUPPA

2. CONTENTS:-
 INTRODUCTION
 STEEL
 HISTORY
 TYPES OF ORE’S
 PROCESS OF IRON MAKING
 TYPES OF MANUFACTURING PROCESS
 BASIC OXYGEN STEEL MAKING PROCESS
 ELECTRICAL PROCESS
 TYPES OF STEELS AND ITS PROPERTIES
 TOP 5 INDIA’S STEEL MANUFACTURING
COMPANIES

3.  Manufacturing:-
It is a process of converting raw
materials into finished goods
with the help of 6M’S.

5. HISTORY

6. TYPES OF ORES
LIMONITE
SIDERITE
IRON PYRITE
MAGNATITE
HAEMATITE

7.  Pig iron is manufactured in a tall , continious-working
furnace, known as blast furnace.
 Charge of ore, fuel & flux are fed to the furnace
through a hopper at the top of the furnace.
 A high temperature of 1300 C to 1650 C is obtained at
bottom of furnace by forcing in a blast of hot air
through the blast pipe surrounding the furnace.
 The calcuim oxide formed by the decomposition of
lime stone combines all the impurities in form of slag.
 The slag is removed and remaining product is called
pig iron.
PROCESS OF IRON MAKING

10. BASIC OXYGEN STEEL MAKING
PROCESS
 PRIMARY STEEL MAKING:-
 BOS METHODS ADD RECYCLED SCRAP STEEL
WITH MOLTEN IRON IN BOF (BASIC OXYGEN
FURNACE) AT HIGH TEMPARATURES
 OXYGEN IS BLOWN THROUGH THE METAL
WHICH REDUCES THE CARBON CONTENT TO
BETWEEN 0 – 1.5 %

12. PRIMARY STEEL MAKING:-
THE RECYCLED STEEL SCRAP AND MOLTEN IRON
IS FEED IN EAF PROCESS IN WHICH THE
MIXTURE IS HEATED UP TO 1650*C TO MELT THE
MIXTURE AND CONVERT IT IN TO HIGH QUALITY
STEEL

13. SECONDARY STEEL MAKING:-
 IT INVOLVES TREATING THE MOLTEN STEEL
PRODUCED FROM (E.A.F) ROUTE TO ADJUST THE
STEEL COMPOSITION THIS IS DONE BY ADDING
OR REMOVING CERTAIN ELEMENTS OR
MANUPULATING THE TEMPARATURE AND
PRODUCTION ENVIRONMENT DEPENDING ON
THE TYPE OF STEEL REQUIRED..,,
 THIS INVOLVES LIKE STIRRING…ETC

15. CONCLUSION:-
FINALLY WE CONCLUDE
THAT MANUFACTURING OF
STEEL BY B.O.S PROCESS IS
ECONOMICALY BETTER
THAN OTHER PROCESS

16. TYPES OF STEELS & ITS PROPERTIES
TYPES PERCENTAGE OF
COMPOSITION
APPLICATIONS
NICKEL STEEL 3-5% NICKEL AXLE SHAFTS,
CRANKSHAFTS..ETC
CHROMIUM STEEL 2-4% CHROMIUM AXELS & BOLTS
18/8 STAINLESS STEEL 18% CHROMIUM
,8%NICKEL
KITCHEN APPLAINCES,
HEAT
EXCHANGERS..ETC
HIGH SPEED STEEL 14-18% TUNGSTEN
3-5% CHROMIUM
0.6% CARBON
CUTTING TOOLS