Metal deforming – With cleaning – descaling – or lubrication of work or product
Reexamination Certificate
2005-11-01
2005-11-01
Larson, Lowell A. (Department: 3725)
Metal deforming
With cleaning, descaling, or lubrication of work or product
C072S203000, C072S365200
Reexamination Certificate
active
06959574
ABSTRACT:
A new configuration and operating method therefore improves conventional continuous pickling and cold-rolling systems in response to increasing demands for high-propertied steel plates. The continuous pickling and cold-rolling equipment system comprises a uncoiling apparatus, a joining apparatus, an accumulating looper, a cleaning section, a pickling section, a cold rolling mill, a cutting apparatus, and a coiling apparatus. This configuration and associated operation method realize a rolling line having a substantially infinite number of mill stands enabling continuous or endless cold rolling without additional mill stands. Thereby, production of cold rolled steel strip with a large total reduction ratio for high-grade steel strips effectively using a small number of mill stands becomes practicable. At least one of the embodiments clearly shows acceptable productivity that can stand comparison with a typical conventional cold rolling system.
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Office Action with English Translation.
Crowell & Moring LLP
Goetz John S
Hitachi , Ltd.
Larson Lowell A.
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