US3707180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for advancing a continuously cast ingot along a curved withdrawal path
Assignee: Vodafone GmbH
•
Filing: 1971-01-20
•
Granted: 1972-12-26
•
Expires: 1991-01-20
Abstract
Abstract A continuously cast curved ingot is withdrawn from the mold by forces distributed so that one-tenth to one half of the total forces act on the upper side along the inside of the curved withdrawal path, the remaining forces act from below along the outer path.
Inventors
- 👤 Gerd Vogt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:21
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/12; B22D11/128; B22D11/1282
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
109 words
In a method for withdrawing a continuously cast steel ingot from a mold along a curved withdrawal path, there being support and guiding rolls provided for engagement with the ingot along that path, some of these rolls being driven, the improvement comprising the step of proportioning the driving forces as imparted by the rolls upon the ingot so that the ratio of the sum of the driving forces imparted by the driven rolls upon the upper side of the ingot to the sum of the driving forces imparted by the driven rolls upon the lower side of the ingot to be within the range of about 0.1 to 0.5.
Claim 2
Dependent Claim
109 words
In a method for withdrawing a continuously cast steel ingot from a mold along a curved withdrawal path, there being support and guiding rolls provided for engagement with the ingot along that path, some of these rolls being driven, the improvement comprising the step of proportioning the driving forces as imparted by the rolls upon the ingot so that the ratio of the sum of the driving forces imparted by the driven rolls upon the upper side of the ingot to the sum of the driving forces imparted by the driven rolls upon the lower side of the ingot to be within the range of about 0.1 to 0.5.
Claim 3
Dependent Claim
50 words
Method in accordance with claim 1, with straightening of the ingot along the path, there being at least one bending point, and including the step of placing one of the driven rolls on the upper side of the ingot to be located before the first bending point for the ingot.
Claim 4
Dependent Claim
36 words
Method in accordance with claim 2 and including the step that the torque for the latter roll is proportioned to be higher than the torque for any of the other rolls along the ingot withdrawal path.
Claim 5
Dependent Claim
39 words
Method as in claim 1, with straightening of the ingot along the withdrawal path by operation of several bending points, including the step of providing a driven roll on the lower side of the ingot in each bending point.
Claim 6
Dependent Claim
43 words
Method as in claim 1, including the step of using a contact pressure force for the driven rolls of about 1 to 1.5 the ferrostatic pressure and providing a larger number of driven rolls on the lower side than on the upper side.
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) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |