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022 3081 7016 |
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9321054766 |
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1800 200 2005 |
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ENQRY to 53030 |
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to get the latest updates on the products and services |
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Product’s and Services |
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HR Processing |
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| Hot rolling is a hot working metalworking process where large pieces of metal, such as slabs or billets, are heated above their recrystallization temperature and then deformed between rollers to form thinner cross sections. Hot rolling produces thinner cross sections than cold rolling processes with the same number of stages. Hot rolling, due to recrystallization, will reduce the average grain size of a metal while maintaining an equiaxed microstructure whereas cold rolling will produce a hardened microstructure. |
The process of cold rolling |
| A slab, billet, or ingot is passed or deformed between a set of work rolls revolving at the same speed, but in opposite directions. The distance between the work rolls is slightly less than that of the passing metal which allows for thinning. The temperature of the metal is generally above its recrystallization temperature, as opposed to cold rolling, which takes place below this temperature. Hot rolling permits large deformations of the metal to be achieved with a low number of rolling cycles. As the rolling process breaks up the grains, they recrystallize maintaining an equiaxed structure and preventing the metal from hardening. Hot rolled material typically does not require annealing and the high temperature will prevent residual stress from accumulating in the material resulting in better dimensional stability than cold worked materials. |
Hot rolling is primarily concerned with manipulating material shape and geometry rather than mechanical properties. This is achieved by heating a component or material to its upper critical temperature and then applying controlled load which forms the material to a desired specification or size. The degree of change to the metal is directly related to the heat of the metal, high heats allowing for greater thinning. |
Where the hot rolled products are used |
Hot rolling is used mainly to produce sheet metal or simple cross sections such as railroad rails from billets, it is also used in infrastructure and constructions field. |
Hot Rolled Coil Processing |
| KHOPOLI |
| CR/HR Slitting |
CR/HR Cut to length |
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Hot Rolled Coil Processing |
| Material |
Mild Steel/Medium & High Carbon |
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| Tensile Strength |
29-58 kg / mm² |
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| Thickness |
0.3 - 8 |
0.3 - 8 |
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Input Coil Specifications |
| ID |
508 - 760 |
508 - 650 |
| OD
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1000 - 2000 |
1000 - 2000 |
| Weigth (MT) |
30 |
30 |
| Width (mm) |
100 - 2000 |
100 - 2000 |
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Input Coil Specifications |
| ID |
508 / 762 / 850 |
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| OD |
1000 - 2000 |
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| Weigth (MT) |
30 |
30 |
| Width (mm) |
100 - 2000 |
100 - 2000 |
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Input Coil Specifications |
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