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US 5,706,690 AGranted
Twin stand cold reversing mill
AssigneeTippins Incorporated
InventorRichard S. Connolly
Life of this patent
Estimating the term…
Abstract
A cold rolling mill and method for cold rolling is disclosed. The cold rolling mill includes at least two tandem four-high reversing mills with at least one tension reel on each side of the tandem mills. Bridle roll units may be positioned on each side of the tandem, reversing mills to allow the cold rolling mill to be utilized as a temper mill.
Claims25
A method of cold rolling substantially homogeneous metal band comprising the steps of:
- a) providing a cold reduction mill having at least two four-high reversing stands for operation in tandem, at least one tension reel on a first side of said stands, and at least one tension reel on a second side of said stands;
- b) passing said metal band in a first pass from one of said at least one tension reel on said first side through said tandem stands to one of said at least one tension reel on said second side, wherein each said tandem stand reduces said metal band on said first pass whereby said stands operate in tandem during said first pass;
- and
- c) passing said metal band in a consecutive second pass from one of said at least one tension reel on said second side through said stands to one of said at least one tension reel on said first side wherein each said tandem mill stand reduces said metal band on said second pass whereby said stands operate in tandem during said second pass.
1 more element
A tandem, reversing cold rolling and temper mill comprising:
- at least two tandem four-high reversing stands;
- at least one tension reel on a first side of said stands for paying off and receiving a strip of metal to and from said stands;
- at least one tension reel on a second side of said stands receiving and paying off a strip of metal from and to said tandem, reversing stands;
- and
- a bridle roll unit positioned on each side of said stands between said mills and said tension reels.
2 more elements
A method of cold rolling hot mill band and temper rolling cold reduced and annealed coils comprising the steps of:
- a) providing at least two four-high reversing mill stands for operation in tandem, at least one tension reel on a first side of said tandem mill, and at least one tension reel on a second side of said tandem mill;
- b) rolling a first campaign of hot mill band back and forth through the stands in a reversing mode between said tension reels to achieve a predetermined thickness for said product;
- c) converting said tandem mills into a temper mill mode;
- and
- d) passing a campaign of cold reduced and annealed steel through at least one of said mills in a temper mode.
2 more elements
Dependencies are inferred from the claim text.