US3847763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of reducing wear of a cemented carbide roll
Assignee: Sandvik AB
•
Filing: 1973-01-23
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Granted: 1974-11-12
•
Expires: 1993-01-23
Abstract
Abstract Rolling mill rolls, formed of hard metal, used for the hot rolling of metals are subject to serious wear and related destructive influences. Such wear can be reduced by giving the rolls electrochemical cathodic protection, in which the electrolyte is the cooling water used in the hot rolling operations and sacrificial anodes are associated with the hard metal rolls.
Inventors
- 👤 K Ekemar
- 👤 B Lind
- 👤 T Svensson
- 👤 K Fundell
- 👤 U Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:22
CPC Classifications
B; B21; B21B; B21B27/00; B21B27/06; B21B28/00; B21B28/02; B21B28/04; C; C23; C23F; C23F13/00; C23F13/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
91 words
METHOD OF REDUCING THE WEAR IN A ROLL OF CEMENTED CARBIDE DURING HOT ROLLING OF METAL AT VERY HIGH SPEED AND SEVERE STRAIN, WHICH CONSISTS IN PROVIDING THE ROLL WITH ELECTROCHEMICAL CATHODIC PROTECTION BY USING THE AVAILABLE COOLING WATER AS ELECTROLYTE AND, AS ANODE, AT LEAST ONE RING FORMED OF A METALLIC MATERIAL HAVING A SIGNIFICANTLY LOWER ELECTROCHEMICAL POTENTIAL THAN THAT OF THE CEMENTED CARBIDE, SAID RING BEING APPLIED ON THE PERIPHERY OF THE ROLL AND SO FORMED THAT ITS OUTER DIAMETER IS THE SAME AS THE DIAMETER OF THE ROLL.
Claim 2
Dependent Claim
91 words
METHOD OF REDUCING THE WEAR IN A ROLL OF CEMENTED CARBIDE DURING HOT ROLLING OF METAL AT VERY HIGH SPEED AND SEVERE STRAIN, WHICH CONSISTS IN PROVIDING THE ROLL WITH ELECTROCHEMICAL CATHODIC PROTECTION BY USING THE AVAILABLE COOLING WATER AS ELECTROLYTE AND, AS ANODE, AT LEAST ONE RING FORMED OF A METALLIC MATERIAL HAVING A SIGNIFICANTLY LOWER ELECTROCHEMICAL POTENTIAL THAN THAT OF THE CEMENTED CARBIDE, SAID RING BEING APPLIED ON THE PERIPHERY OF THE ROLL AND SO FORMED THAT ITS OUTER DIAMETER IS THE SAME AS THE DIAMETER OF THE ROLL.
Claim 3
Dependent Claim
13 words
Method according to claim 1, wherein the anodic ring is formed of aluminum.
References Cited (Backward Citations)
US1494331A
Cited
US2151048A
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US2758081A
Cited
US3108055A
Cited
US3609849A
Cited
US3577619A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |