PRODUCT PROCESS

STEP 1

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Shot Blasting

Hot rolled bars are passed through a chamber for a process in which the high pressure steel balls hit the surface of the bars. This process helps in removing the scales on the bars and helps the same to be cleaned for cold drawing.

STEP 2

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Straightening

Bent steel bars are passed through a set of rolls. This improves straightness.

STEP 3

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Cold Drawing

The Hot Rolled Bar is descaled, pulled through Tungsten Carbide or High Speed Steel Die, straightened & cut-to-length. This improves dimensional tolerance, shape, straightness, surface finish, strength and machinability.

STEP 4

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Peeling

It is a machining method that removes oxidized crusts, surface deformations or superficial cracks that develops due to hot forging. This process helps achieve shape and surface form tolerance

STEP 5

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Reeling

Peeled Bars are passed through rollers to straighten them and settle any tool marks that may have developed during the process of Peeling.

STEP 6

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Belt Polishing

Remove bar surface of Hot Rolled bars with revolving cutting tool, rotate bar through rolls to straighten and polish, then cut-to-length. Improved dimensional tolerances and removes surface defects and decarburisation.

STEP 7

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Grinding

Abrasive wheel grinds off surface metal. Improves surface finish and achieves very close dimensional tolerances.

STEP 8

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Forging

It is a manufacturing process that involves the shaping of metal through hammering.

STEP 9

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Turning

Forged bars are machined to specific size by removing the surface on lathe machines.

STEP 10

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Cutting

Separates into desired lengths by cold shearing or sawing. It improves length tolerance.

STEP 11

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Chamfering

Cutting a taper and end-facing the bar. Eliminates end distortion and improves bar feeding.

STEP 12

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Packing

Stretch film is used to wrap the finished bars. Metal straps are then used at three places to tighten the bundle of bars. HDPE Packing is used to ensure that the finished material is saved from any exposure of sea or air during the transit.

Heat Treatment

STEP 14

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Annealing

Heating above the critical temperature and slow coating the bar. This controls microstructure and softens the bar.

STEP 15

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Normalising

Heating above the critical temperature and air cooling the bar. This improves the uniformity of microstructure.

STEP 16

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Quenching and Tempering

Heating above the critical temperature and quenching the bar in oil or water followed by a tempering operation. It leads to an increased strength, hardness and toughness.

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