WELCOME

BHUSHAN STEELS PVT. LTD

SUMMER TRAINING REPORT

ONTREATEMENT OF HR

SHEETS INBHUSHAN STEELS PVT.

LTD

COMPANY PROFILE

TYPE:- PRIVATE

FOUNDED IN:- 1987

FOUNDERS:-BRIJ BHUSHAN SINGHAL(Chairperson)

INDUSTRY:- STEEL

WEBSITE:-www.bhushangroup.com

CONTENTS:-

1)- Pickling line2)- Hitachi mill3)-Electrolytic cleaning line4)-Annealing5)-Skin pass mill6)-Cut to length7)-Colour coating line8)-Customers of Bhushan steels

Pickling LInePickling line is basically meant for removal of rust and dust from the surface of HR coils.Acid used for pickling is HCL.Concentration of different pickling is:-1)-Ist stage- 3.5%2)-IInd stage- 7%3)-IIIrd stage- 11%

Line diagram

Hitachi MillHitachi mill is used for the reduction of thickness of the sheets.It is also used in maintaining tension in the sheets.Hydraulic load is applied on the 6 Hi rollers

%age reduction=(t1 – t2) / t1*100

Hitachi mill

Electrolytic Cleaning Line

This process is done for the removal of coolant and other impurities on the surface of sheet.Strip is passed through electrolyte and then caustic soda solution where its surface is cleaned.Surface finish is also improved in this process.Dryer is used for the removal of water on the surface of the strip

Line diagram of ECL

AnnealingAnnealing is a process of heating, soaking and controlled cooling of coil in a non oxidizing atmosphere.Annealing is done to refine the grain structureand reduce hardness of sheet.Annealing is done at a temperature of 575-650°CBell type Annealing is done for rolled sheetsKathabar Bell is used for cooling of rolled sheet so that the strip does not stuck with each other.

Oxygen gas is removed by filling up nitrogen gas inside the bell.Nitrogen gas is removed by filling hydrogen gas.Air cooling is done till the temperature reaches 250°CWater cooling is done till the temperature reaches to 125°CAfterward cooling is done by dry air which is formed on kathabar bells

Annealing of rolled sheets

Skin Pass millIn this mill the surface finishing of the rolled sheet is increased.Hardness is also increased as per requirement of customers.It improves shape and temper of the material.7% reduction of SPM is done in this mill.Quality parameter is finally checked in this mill.

Flow diagram of skin pass mill

Cut to lengthIn this line sheets are cut according to the requirement of the customer.Shear blades are used for cutting of the sheets.Sheets are dispatched for coloring or polishing

Diagram of CTL Line

Color coating lineDifferent types of color are coated on the sheets as per requirement of the customer.Sheets are first washed with alkaly and then with water to remove dust.Then chemical coating and primer costing is done.After then different layers of paint is coated on the sheet.Then it is sent in oven after which quenching is done and the roll is recoiled.

Block diagram of ccl line

Line diagram of ccl line

CUSTOMERS OF BHUSHAN STEELS PVT.

LTDFOUR WHEELER CUSTOMER1)-MARUTI SUZUKI2)-HYUNDAI3)-TATA MOTOR4)-FIAT5)-HONDA6)-TOYOTO7)-CHEVORLET

THREE-TWO WHEELER CUSTOMER

1)-BAJAJ2)-YAHAMA3)-KINETIC MOTORS4)-PIAGGIO5)-L.M.L6)-HERO HONDA7)HONDA8)-TVS

AIR CONDITIONER AND WASHING MACHINE

1-HITACHI2-CARRIER3-DIAKIN4-GODREJ5-SAMSUNG6-LG ELECTRONICS7-ELECTORLUX8-VIDEOCON9-WHIRLPOOL10-BPL

PRESENTED BY.SHEKHAR KUMAR

THANK YOU…,