Patent US3662447A successfully refreshed from Google Patents.
US3662447A
Expired / Lapsed
US
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Method for producing a nozzle-load for a water cooled blowing lance
Assignee: Voestalpine AG
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Filing: 1970-08-05
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Granted: 1972-05-16
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Expires: 1990-08-05
Abstract
Abstract The disclosure relates to a nozzle-head for a water-cooled blowing lance comprising at least one outlet opening for a gaseous refining agent and, if desired, fine-grained fluxes, an inlet piece, at least one nozzle tube leading through a watercooled space and a front plate to which the at least one nozzle tube is connected, in which the improvement resides in that both the inlet piece and the front plate are provided with tubular projections which are connected with each other to form said nozzle tubes, the connection plane lying perpendicularly to the nozzle-head axis at a distance from the front plate amounting to about one-fourth to two-thirds of the height of the nozzle-head. The number of connecting seams corresponds to the number of nozzle tubes; the seams are far away from the front plate and thus sheltered from any danger to damage.
Inventors
- 👤 Otto Schweng
- 👤 Hellmuth Smejkal
- 👤 Hans Vereb
- 👤 Karl Eicher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:47
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/46; C21C5/4606; Y; Y10; Y10S; Y10S29/00; Y10S29/026; Y10T; Y10T29/00; Y10T29/49; Y10T29/49348
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
184 words
In a method for producing a nozzle-head for a blowing lance, comprising at least one outlet opening for a gaseous refining agent, an inlet piece, at least one nozzle tube leading through a water-cooled space, and a front plate to which said at least one nozzle tube is connected, the steps of a. producing blanks for the inlet piece and the front plate each with studs in a number corresponding to the number of nozzle tubes; b. providing for planar surfaces at the ends of the studs of either blank perpendicularly to the nozzle-head axis; c. drilling equidistant holes parallel to the nozzle-head axis through the studs of either blank in the area of the outlet openings to be made at a later point; d. uniting the blanks provided with the holes and inserting soldering foils between the areas of contact of the stud ends of either blank; e. heating the blanks to soldering temperature and cooling them subsequently; f. mechanically working the blanks soldered together, including operations of drilling the outlet openings and forming bevel edges for the connection with the blowing lance.
Claim 2
Dependent Claim
184 words
In a method for producing a nozzle-head for a blowing lance, comprising at least one outlet opening for a gaseous refining agent, an inlet piece, at least one nozzle tube leading through a water-cooled space, and a front plate to which said at least one nozzle tube is connected, the steps of a. producing blanks for the inlet piece and the front plate each with studs in a number corresponding to the number of nozzle tubes; b. providing for planar surfaces at the ends of the studs of either blank perpendicularly to the nozzle-head axis; c. drilling equidistant holes parallel to the nozzle-head axis through the studs of either blank in the area of the outlet openings to be made at a later point; d. uniting the blanks provided with the holes and inserting soldering foils between the areas of contact of the stud ends of either blank; e. heating the blanks to soldering temperature and cooling them subsequently; f. mechanically working the blanks soldered together, including operations of drilling the outlet openings and forming bevel edges for the connection with the blowing lance.
Claim 3
Dependent Claim
59 words
The method set forth in claim 1, wherein said blank for said front plate is formed with ribs, a prefabricated annular water deflecting body designed to rest on said ribs is arranged on the blank for the inlet piece before the blanks are combined, and said ribs are machined to provide for a support surface for said annular body.
Claim 4
Dependent Claim
25 words
The method set forth in claim 1, wherein the finished nozzle-head comprising the inlet piece and the front plate is connected with a blowing lance.
Claim 5
Dependent Claim
36 words
The method set forth in claim 1, wherein a peripheral groove is milled in the inlet piece for engagement therewith of adjusting screws serving as centering means when said nozzle-head is connected with a blowing lance.
Claim 6
Dependent Claim
44 words
The method set forth in claim 1, wherein the combined two blanks are put onto an auxiliary means comprising a plate and guiding pins vertically projecting therefrom, said guiding pins engaging the holes of the blanks thus affording centering and fixing of said blanks.
Claim 7
Dependent Claim
59 words
The method set forth in claim 1, wherein the two blanks for the supply piece and the front plate are produced by drop forging from pressed metal which was pre-forged in at least one heat so that a high degree of shaping is achieved, namely an about 5 to 25 fold shaping of the blank for the front plate.
Claim 8
Dependent Claim
18 words
The method set forth in claim 1, wherein the water deflection body is also made by drop forging.
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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |