Hot and Cold Rolled Plate
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| At its most basic level, rolling is the process of
forming and shaping metals through the use of thermal and pressure.
The process begins with a cast ingot, which is heated to its plastic
deformation temperature, then worked between 2 rollers to the desired
shape and thickness. During this hot rolling process, the cast, coarse grain structure of the original slab is broken up and replaced by finer grains, achieved through the resulting size reduction. This gives excellent overall structural integrity through the elimination of the cast structure. Secondary processing, such as heat-treating and cold rolling, can also be used to further enhance the properties of the material and produce thin plate gauges. |
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With the basic hot rolling process as detailed above, it is found that plates have a very strong directional grain flow which can lead to down stream difficulties in cutting and fabrication. This is due to the resulting differential characteristics of the properties and structure with in the plate. Cross Rolling, where the plate is repeatedly turned by 90 deg. through its production rolling program giving plates a greater uniform microstructure and homogeneous properties both in the longitudinal to transverse directions across the plate. |
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On our steel, superduplex and nickel based alloys we have the unique position of being able to hot roll these grades down to 1.00 mm thickness while maintaining gauge thickness and flatness requirements of ASTM 480 M-02 This very cost effective production routing means that Langley Alloys should be your first choice for 1.00 to 5.00 mm plate thickness. |
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