US4044586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous rolling mill
Assignee: Individual
•
Filing: 1975-09-05
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Granted: 1977-08-30
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Expires: 1995-09-05
Abstract
Abstract There is disclosed a rolling assembly for the initial rolling passes of a metal ingot coming from a continuous casting machine and having substantially triangular or trapezial cross-section with mutually proportional sides. The rolling assembly comprises at least a first rolling unit with three rolls each having the same geometrical shape defining a substantially circular passage. This shape is such that the metal ingot entering the rolling unit comes into contact along a preponderal part of its peripheral contour with the rolls and that the forces acting on the metal ingot have at each point of contact a resultant substantially directed towards the center of the metal ingot.
Inventors
- 👤 Giulio Properzi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:28
CPC Classifications
B; B21; B21B; B21B3/00; B21B3/003; B21B1/00; B21B1/16; B21B1/18; B21B1/46; B21B1/463; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T29/49988; Y10T29/49991
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
104 words
A continuous rolling mill having rolling units with three rolls for rolling an ingot originating from a continuous casting machine of the wheel and band type, said ingot having a substantially triangular or trapezial cross-section of mutually proportional sides, the rolling mill comprising at least a first rolling unit with three rolls each having rolling grooves of equal geometry configured as an arc of a circle, to define a substantially circular passage dimensioned so that a surface portion of the ingot is untouched by the rolls during rolling, this surface portion being not greater than approximately 15% of the surface touched by the rolls.
Claim 2
Dependent Claim
104 words
A continuous rolling mill having rolling units with three rolls for rolling an ingot originating from a continuous casting machine of the wheel and band type, said ingot having a substantially triangular or trapezial cross-section of mutually proportional sides, the rolling mill comprising at least a first rolling unit with three rolls each having rolling grooves of equal geometry configured as an arc of a circle, to define a substantially circular passage dimensioned so that a surface portion of the ingot is untouched by the rolls during rolling, this surface portion being not greater than approximately 15% of the surface touched by the rolls.
Claim 3
Dependent Claim
37 words
A rolling mill as claimed in claim 1, particularly for rolling an ingot of substantially triangular cross-section, wherein the rolls at least of the first rolling unit have rolling grooves defining a circular passage of constant radius.
Claim 4
Dependent Claim
47 words
A rolling mill as claimed in claim 1, wherein the rolls at least of the first rolling unit each have a rolling groove with an arcuate central portion and two adjacent arcuate portions, the radius of said central portion being greater than that of said adjacent portions.
Claim 5
Dependent Claim
53 words
A rolling mill as claimed in claim 2, comprising a plurality of rolling units with rolls having grooves in the form of arcs of a circle of constant radius defining a circular passage, alternating with rolling units having rolls prefereably defining a passage in the form of a circular or elliptically curved triangle.
Claim 6
Dependent Claim
57 words
A rolling mill as claimed in claim 3, comprising a plurality of rolling units with rolls having rolling grooves configured with a central arcuate portion of radius substantially greater than that of the two adjacent arcuate portions, alternating with rolling units having rolls preferably forming a passage in the form of a circular or elliptically curved triangle.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-29 | 1981-02-28 | 1981-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-29 | 1985-02-28 | 1985-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-29 | 1989-02-28 | 1989-08-30 | $7700.00 | Window Closed / Lapsed |