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US 5,355,570 AGranted
Method for the production of bright round steel
AssigneeSMS Schloemann-Siemag Aktiengesellschaft
InventorBruno Bohmer
Life of this patent
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Abstract
A method for producing bright steel, particularly bar-shaped bright round steel produced from hot-rolled steel. The method includes rounding the round steel coming from rolling heat in a sizing mill to close tolerances, extensively removing the oxide film of the round steel and subsequently subjecting the round steel to a straightening and polishing procedure.
Claims6
A method of producing a bright round steel produced from a hot-rolled steel, said method comprising the steps of:
- round-rolling a bright round steel coming from rolling heat in a high-precision mill to a roundness of between 0.1% and 1%;
- extensively removing oxide film from the round-rolled steel;
- and
- thereafter, straightening and polishing a deoxidized steel;
- wherein said oxide film removing step includes descaling a surface of the bright round steel until appearance of one of shadow and strip patterns.
2 more elements
A method of producing a bright round steel produced from a hot-rolled steel, said method comprising the steps of:
- round-rolling a bright round steel coming from rolling heat in a high-precision rolling mill to a roundness of between 0.1% and 1%;
- extensively removing oxide film from the round-rolled steel;
- and
- thereafter, straightening and polishing a deoxidized steel;
- wherein said straightening and polishing step includes the step of adjusting a surface roughness of the deoxidized steel between 1 and 8.mu..
2 more elements
Dependencies are inferred from the claim text.