US5484513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for producing a rough generated surface on a cylindrical body of rotation
Assignee: Sundwiger Eisenhuette Maschinenfabrik Grah and Co
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Filing: 1994-02-01
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Granted: 1996-01-16
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Expires: 2014-02-01
Abstract
Abstract The invention relates to a process and apparatus for producing a rough and hard generated surface on a cylindrical body of rotation, more particularly a roll for metal strips. To rapidly obtain as uniform a surface roughness as possible, the body of rotation (2), acting as a cathode, is immersed over its whole length into an electrolyte (1) in a tank (3) only to such an extent that the immersed peripheral portion is narrower by a multiple than a plate-shaped anode (5) disposed opposite the body of rotation and extending over its whole length. The electrolyte can contain a substance suitable as a finishing deposit on the generated surface.
Inventors
- 👤 Andrej D. Dejneko
- 👤 Wladimir N. Skorochodov
- 👤 Sergej L. Kozar
- 👤 Wladilen S. Lepekin
- 👤 Wladimir P. Schumilow
- 👤 Mihail-Dan Gutu
- 👤 Udo Riedesel
- 👤 Heinz F. Rogowsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:06
CPC Classifications
C; C25; C25D; C25D7/00; C25D7/04; B; B23; B23H; B23H9/00; B23H9/04; C25D9/00; C25D9/04; C25D9/08
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
106 words
A process for producing a rough generated surface on a cylindrical body of rotation, comprising immersing said body along its entire length into a tank containing an electrolyte and a plate-shaped anode extending longitudinally relative to said body so that only a peripheral portion of said body is immersed in said tank, said peripheral portion being a fractional part of the width of said plate-shaped anode, with said body acting as a cathode, causing an electric current to pass through said tank so that electrical discharges are focused on said peripheral portion of said body thereby to roughen it, and rotating said body in said tank.
Claim 2
Dependent Claim
106 words
A process for producing a rough generated surface on a cylindrical body of rotation, comprising immersing said body along its entire length into a tank containing an electrolyte and a plate-shaped anode extending longitudinally relative to said body so that only a peripheral portion of said body is immersed in said tank, said peripheral portion being a fractional part of the width of said plate-shaped anode, with said body acting as a cathode, causing an electric current to pass through said tank so that electrical discharges are focused on said peripheral portion of said body thereby to roughen it, and rotating said body in said tank.
Claim 3
Dependent Claim
17 words
The process according to claim 1, further comprising performing said process with an adjustable depth of immersion.
Claim 4
Dependent Claim
27 words
The process according to claim 2, wherein said electrolyte comprises a substance which is suitable as a deposit on the generated surface of the body of rotation.
Claim 5
Dependent Claim
23 words
The process according to claim 3, wherein said substance comprises a proportion of 5 to 20% Cr(NO 3 ) 3 x9H 2 O.
Claim 6
Dependent Claim
20 words
The process according to claim 1, further comprising performing said process at a temperature between 35° and 65 ° C.
Claim 7
Dependent Claim
30 words
The process according to claim 1, further comprising performing said process at a peripheral velocity of the generated surface of the body of rotation of 0.03 - to 0.3 m/min.
Claim 8
Dependent Claim
29 words
A process according to claim 1, further comprising performing said process with a specific current density between said cathode and said anode of 30 to 100 A/dm 2 .
Claim 9
Dependent Claim
20 words
The process according to claim 1, further comprising performing said process with an applied voltage of 200 to 300 V.
Claim 10
Dependent Claim
26 words
The process according to claim 1, further comprising performing said process by using a patterned screen retained by the generated surface of the body of rotation.
Claim 11
Dependent Claim
16 words
The process of claim 1, wherein said body of rotation comprises a roll for metal strips.
Claim 12
Dependent Claim
141 words
Apparatus for producing a rough generated surface on a cylindrical body of rotation, comprising a tank adapted to containing an electrolyte to contain bath a plate-shaped anode adapted to be disposed in said bath, a current source connected to said anode and to said body, a carrier which is adapted to support said body for immersion of a peripheral portion of said body into said bath opposite said plate-shaped anode, the depth of immersion being adjusted so that the width of said plate-shaped anode is three to ten times as wide as the peripheral portion, and the carrier including a rotary drive for rotating said body in said bath, the current supplied by said current source being such that with said body acting as a cathode, electrical discharges are focussed on said peripheral portion of said body thereby to roughen it.
Claim 13
Dependent Claim
141 words
Apparatus for producing a rough generated surface on a cylindrical body of rotation, comprising a tank adapted to containing an electrolyte to contain bath a plate-shaped anode adapted to be disposed in said bath, a current source connected to said anode and to said body, a carrier which is adapted to support said body for immersion of a peripheral portion of said body into said bath opposite said plate-shaped anode, the depth of immersion being adjusted so that the width of said plate-shaped anode is three to ten times as wide as the peripheral portion, and the carrier including a rotary drive for rotating said body in said bath, the current supplied by said current source being such that with said body acting as a cathode, electrical discharges are focussed on said peripheral portion of said body thereby to roughen it.
Claim 14
Dependent Claim
29 words
The apparatus according to claim 11, wherein said anode is four to eight times as wide as said immersed peripheral portion of the body rotation disposed opposite said anode.
Claim 15
Dependent Claim
16 words
The apparatus of claim 11, wherein said body of rotation comprises a roll for metal strips.
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) | 1999-01-15 | 1999-07-17 | 2000-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-15 | 2003-07-17 | 2004-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-15 | 2007-07-17 | 2008-01-16 | $7700.00 | Window Closed / Lapsed |