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Summer training report on bhushan steels

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MANUFACTURING PROCESS IN BHUSHAN STEELS

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Summer training report on bhushan steels

  1. 1. TYPE:- PRIVATE FOUNDED IN:- 1987 FOUNDERS:-BRIJ BHUSHAN SINGHAL(Chairperson) INDUSTRY:- STEEL WEBSITE:-www.bhushangroup.com
  2. 2. 1)- Pickling line 2)- Hitachi mill 3)-Electrolytic cleaning line 4)-Annealing 5)-Skin pass mill 6)-Cut to length 7)-Colour coating line 8)-Customers of Bhushan steels
  3. 3. Pickling 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%
  4. 4. Hitachi 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
  5. 5. 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
  6. 6. Annealing is a process of heating, soaking and controlled cooling of coil in a non oxidizing atmosphere. Annealing is done to refine the grain structure and reduce hardness of sheet. Annealing is done at a temperature of 575- 650°C Bell type Annealing is done for rolled sheets Kathabar Bell is used for cooling of rolled sheet so that the strip does not stuck with each other.
  7. 7. 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°C Water cooling is done till the temperature reaches to 125°C Afterward cooling is done by dry air which is formed on kathabar bells
  8. 8. In 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.
  9. 9. In 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
  10. 10. Different 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.
  11. 11. FOUR WHEELER CUSTOMER 1)-MARUTI SUZUKI 2)-HYUNDAI 3)-TATA MOTOR 4)-FIAT 5)-HONDA 6)-TOYOTO 7)-CHEVORLET
  12. 12. 1)-BAJAJ 2)-YAHAMA 3)-KINETIC MOTORS 4)-PIAGGIO 5)-L.M.L 6)-HERO HONDA 7)HONDA 8)-TVS
  13. 13. 1-HITACHI 2-CARRIER 3-DIAKIN 4-GODREJ 5-SAMSUNG 6-LG ELECTRONICS 7-ELECTORLUX 8-VIDEOCON 9-WHIRLPOOL 10-BPL

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