This document provides an overview of the annealing and pickling process at Jindal Stainless (Hisar) Limited's cold rolling division. It established India's first stainless steel plant in 1975. The cold rolling division processes coils through annealing and pickling to restore shine and remove stresses and impurities. The AP-2 line is described which can process coils from 0.4-12mm thick and 500-1270mm wide of various stainless steel grades at speeds up to 35mpm. Annealing reduces stresses from rolling while pickling using acids removes scale and oxides to produce bright, corrosion resistant coils. The training improves the presenter's technical skills and knowledge of stainless steel manufacturing processes.

1. INDUSTRIAL TRAINING
PRESENTATION
ON
Annealing And Pickling Process
(Hot rolled and Cold rolled coils)
Presented by:
Mohd Aman
15BME0034
B-tech (ME)
VIIIth SEM

2. CONTENT
 COMPANY PROFILE
 PLANT LAYOUT
 DETAILS OF A.P LINE AND PROCESS
 PRODUCTS OF JSL
 APPLICATIONS OF STAINLESS STEEL
 SCOPE OF TRAINING

3. JINDAL STAINLESS (HISAR) LIMITED
 The Hisar plant was established in 1975 when Shri O.P Jindal, envisioned a self reliant India for
meeting its stainless steel demand. Stainless steel then was no less than a luxury metal and India
was completely dependent on imports to fulfil its demand, which imports attracted duties of up to
300%. It was Shri O.P Jindal’s vision and his pioneering spirit that led to the establishment of the
Hisar plant, India’s first stainless steel manufacturing unit.
 Hisar plant was integrated on a strategy of both, backward and forward integration, starting from
mining, melting, casting, hot rolling to cold rolling and other value additions Today, it is a fully
integrated Stainless Steel plant with a capacity of 800,000 TPA. It is also the world’s largest
producer of Stainless Steel strips for razor blades
 it’s Specialty product division caters to the high end precision and specialty stainless steel
requirements of reputed Indian and International customers. The product range includes Slabs &
Blooms, Hot Rolled Coils, Strips, Plates, Coin Blanks, Precision Strips and Cold Rolled Coils.
 Company plans to continue its focus on development of new value added stainless steel grades,
process improvements and customer satisfaction through developing customized products
matching their specific requirements.

6. PURCHASE
DEPARTMENTE
(ENSURES GOOD QUALITY
MATERIAL AVAILIBILITY)
RAW
MATERIALS
STEEL MELTING SHOP
SMS 1
SMS 2SLABS
(Grinding and Shot blasting)
HOT ROLLING
(Steckel Mill)
COLD ROLLING
DISPATCH
Other Departments
1.Quality Control
Department
2.Production Planning And
Control Department
 Basic idea of the plant working.

7. COLD ROLLING DIVISION (CRD)
In the cold rolling division the coils undergo process to annealing and pickling which restores
the Shine characteristics of stainless steel to the coils that were initially black when received
from HRD . the coil may further processed to obtain very thin plates of steel.
CRD 3CRD 2CRD 1
CRD
 SPM
 TLL
 AP 3
 Z3 MILL
 Z4 MILL
 SPM
 SGL
 ST4
 BA
 CPL
 AN 1
 P 1
 AP2
 Z1 MILL
 Z2 MILL
 ST-1
 ST-2
 ST-3
 PTF
 P5

8. Black Coils From Hot
Rolling Division(raw
Material)
Furnace for heating
Static cooling by cooling
jackets & spray cooling by
water & air.
Scale breaker
Shot blasting with the
help of steel shots.
Pickling by H2so4,
HF,HNO3
White Coils Free From
Internal Stresses
General layout of annealing and pickling line

9. AP-2 LINE DIVIDED

10. AP-2 LINE SPECIFICATION
 Max Entry speed : 35mpm
 Max process speed : 25mpm
 Max exit speed : 35mpm
 Man coil thickness : 5mm
 Min coil thickness : 0.4 mm
 Max coil width : 1270mm
 Min coil width : 500mm
GRADE PROCESSED AT AP -2 LINE
 300 series
 200 and J series like – JT,JBSX, J4
 400 series
INPUT MATERIAL FOR AP-
 Hot rolled coil from HR division for HRAP
 Cool rolled coil from Z-1, Z- 2, Z-3 and 4 mill
 Hot rolled coil from CP LINE with leader end .

11. WHY ANNEALING REQUIRED ?
Material becomes hard
during rolling and internal
stress develops . Material will
crack if it is rolled further
without reducing these
stresses.To reduce these
stresses annealing is required

12. WHY PICKLING IS REQUIRED ?
 Removal of annealing oxides and mill scale
 Removal of chromium depleted zone
 Improve the surface shining.
 Making the stainless steel corrosion resistant.
Piclkling section consist of 3 acid tanks.
1. H2SO4 TANK (8%-12%)
2. MIX ACID TANK -1 (HNO3 +HF)
3. MIX ACID TANK 2 (CONC. HNO3)

13. 160 mm wide steel plates.
Hot rolled coils (1.2mm to 12mm)
Cold rolled coils (0.5mm to 5mm)
Products of JSL

14. APPLICATIONS OF JSL STAINLESS STEEL

15. Scope of training
This training help me to improve my knowledge of types of stainless
steel that how is manufactured? How it is rolled ? how it is processed
and how is brightened.
It improved my technical skill about annealing and pickling process
that will be beneficial to work in an industry in future.
Also during training I come to know how to tackle problems coming
during process.
This training help us to teach that how to work with team co-
ordination.

16. THANK YOU