Cold Rolled Steel process

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As you might suspect, the manufacturing process behind cold-rolled steel is a bit different. Despite the name, this process refers to steel that is pressed with the pressure of a roller at room temperature.

Compared to hot-rolled steel, cold-rolled steel has a nearly 20% increase in strength through the use of strain hardening. It’s through a series of breakdown, semi-finishing, sizing, semi-roughing, roughing, and finishing that cold-rolled steel shapes can be created.

Cold-rolling steel allows for the creation of very precise shapes. Since the process is performed at room temperature, the steel will not shrink as it cools, as it does in the hot-rolled process.

The exterior finish of cold-rolled steel is very desirable when aesthetics and visual appeal are a priority in your project.

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However, the applications of cold-rolled steel are somewhat limited to a couple of shapes – square, round, flat, and variations thereof.

Typical uses for cold-rolled steel:

  • Strips
  • Bars
  • Rods
  • Home appliances
  • Roof and wall systems
  • Metal furniture
  • Aerospace structural members

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Cold rolled steel is essentially hot rolled steel that has gone through more processing. To get cold rolled steel, manufacturers generally take cooled-down hot rolled steel and roll it more to get more exact dimensions and better surface qualities.
But the term “rolled” is often used to describe a range of finishing processes such as turning, grinding, and polishing, each of which modifies existing hot rolled stock into more refined products. Technically, “cold rolled” applies only to sheets that undergo compression between rollers. But forms like bars or tubes are “drawn,” not rolled. So hot rolled bars and tubes, once cooled, are processed into what are called “cold finished” tubes and bars.
With better surface characteristics than hot rolled steel, it’s no surprise that cold rolled steel is often used for more technically precise applications or where aesthetics are important. But, due to the additional processing for cold finished products, they come at a higher price.
In terms of their physical characteristics, cold worked treatments can also create internal stresses within the material. In other words, fabricating cold worked steel—whether by cutting, grinding, or welding it—can release tensions and lead to unpredictable warping.

Depending on what you’re looking to build, different types of materials each have their own benefits and drawbacks. For unique projects or one-off productions, prefabricated steel materials can provide the building blocks for any structural configuration imaginable.

For projects where you’ll be manufacturing many units, casting is another option that can save time in machining and assembly. Cast parts can be made to almost any form in a range of quality materials.

Contact our experts right now to place your order. Head office contact number: 02122247000 – 09108697000

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