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| United States Patent |
6,436,553
|
|
Stadler
, et al.
|
August 20, 2002
|
Continuous steel strip for twin presses and method for producing the same
Abstract
A continuous steel strip consisting especially of austenitic or martensitic
steel, with at least one weld seam running crosswise to the longitudinal
extension of the steel strip, for twin presses. The steel strip includes
at least one first surface layer which extends essentially across the
entire steel strip and which has a different composition to an
intermediate layer located between said first surface and a second surface
facing the first. The intermediate layer extends essentially across the
entire steel strip. The first surface layer consists of the steel of the
steel strip and has regularly positioned heat-influenced areas, e.g.,
zones, situated next to or overlapping each other and/or fusion
penetration areas, e.g., zones.
| Inventors:
|
Stadler; Otto (Hernstein, AT);
Schuster; Roland (Berndorf, AT)
|
| Assignee:
|
Berndorf Band GesmbH (Berndorf, AT)
|
| Appl. No.:
|
509558 |
| Filed:
|
July 26, 2000 |
| PCT Filed:
|
October 9, 1998
|
| PCT NO:
|
PCT/AT98/00238
|
| 371 Date:
|
July 26, 2000
|
| 102(e) Date:
|
July 26, 2000
|
| PCT PUB.NO.:
|
WO99/19109 |
| PCT PUB. Date:
|
April 22, 1999 |
Foreign Application Priority Data
| Oct 14, 1997[AT] | A 1739/97 |
| Current U.S. Class: |
428/600; 428/610; 428/687; 148/903; 148/512; 219/121.64; 219/121.66 |
| Intern'l Class: |
C21D 009/00; C21D 009/50; B23K 026/08 |
| Field of Search: |
148/512,903,320,325
428/610,600,687
219/121.63,121.64,121.65,121.66,121.6
|
References Cited
U.S. Patent Documents
| 3650846 | Mar., 1972 | Holland et al. | 148/4.
|
| 3884749 | May., 1975 | Pankoke | 156/501.
|
| 4007351 | Feb., 1977 | Annerhed et al. | 219/50.
|
| 4021906 | May., 1977 | Takahashi | 29/407.
|
| 4537810 | Aug., 1985 | Held | 428/156.
|
| 4552596 | Nov., 1985 | Ichiyama et al. | 148/31.
|
| 4909859 | Mar., 1990 | Nazmy et al. | 148/11.
|
| 5269856 | Dec., 1993 | Igawa et al. | 148/609.
|
| 5861067 | Jan., 1999 | Hetzner | 148/326.
|
| 5961751 | Oct., 1999 | Maruki et al. | 148/512.
|
| 6063215 | May., 2000 | Harrington | 148/622.
|
| Foreign Patent Documents |
| 3337962 | May., 1985 | DE.
| |
| 0031613 | Jul., 1981 | EP.
| |
| 0481378 | Apr., 1992 | EP.
| |
| 0536625 | Apr., 1993 | EP.
| |
| 60-36623 | Feb., 1985 | JP.
| |
Other References
Patent Abstracts of Japan, vol. 6, No. 26, Feb. 16, 1982 & JP 56 144138 A
(Nozawa:KK), Nov. 10, 1981.
|
Primary Examiner: Zimmerman; John J.
Attorney, Agent or Firm: Jacobson Holman, PLLC
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