Blooms

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These are large, long, continuously cast pieces of steel with a minimum square section of 150mm x 150mm, but usually much larger. They are cut-to-length immediately after casting.

After reheating, blooms are used to roll medium and large sections, as well as large profiles such as sheet piling, and rails. Sometimes when large “H” or “I” beams are to be rolled, partially shaped blooms called beam blanks or “dogbones” are cast to shorten the rolling process.

Where ingot casting of carbon steel is still the only option, or in the case of certain highly specialised alloy steels where ingot casting produces higher quality material, blooms are rolled from cast ingot in a blooming mill. Blooms (and billets) are also used for seamless tube making. And for more detail click and see wikipedia entry.

steel bloom

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