US3662447A - Method for producing a nozzle-load for a water cooled blowing lance - Google Patents
Method for producing a nozzle-load for a water cooled blowing lance Download PDFInfo
- Publication number
- US3662447A US3662447A US61090A US3662447DA US3662447A US 3662447 A US3662447 A US 3662447A US 61090 A US61090 A US 61090A US 3662447D A US3662447D A US 3662447DA US 3662447 A US3662447 A US 3662447A
- Authority
- US
- United States
- Prior art keywords
- nozzle
- front plate
- blanks
- head
- blank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4606—Lances or injectors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S29/00—Metal working
- Y10S29/026—Method or apparatus with machining
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49348—Burner, torch or metallurgical lance making
Definitions
- the disclosure relates to a nozzle-head for a water-cooled PP N03 61,090 blowing lance comprising at least one outlet opening for a gaseous refining agent and, if desired, fine-grained fluxes, an 30 Foreign Application p Data inlet piece, at least one nozzle tube leading through a watercooled space and a front plate to which the at least one nozzle Aug.
- the number of connecting seams cor- 56 responds to the number of nozzle tubes; the seams are far 1 References Cited away from the front plate and thus sheltered from any danger UNITED STATES PATENTS to damage- 2,378,516 6/1945 Timmerman et al ..29/l57 C 7 Claims, 8 Drawing Figures 9 10 I I l a,
- the invention relates to a nozzle-head for a water-cooled blowing lance comprising one or several outlet openings for a gaseous refining agent and, if desired, fine-grained admixtures, an inlet piece, one or several nozzle tubes leading through a water-cooled space and connected with a front plate, and to a method for producing such nozzle-head.
- blowing lances In basic oxygen steelmaking methods the oxygen necessary for refining the pig iron is blown onto the metal bath by means of water-cooled blowing lances. These blowing lances are provided at their lower end with nozzle-heads usually made of oxygen-free electrolyte copper which guarantees a long life of the nozzle-head because of the good heat conductivity and the poor affinity of copper to oxygen.
- the blowing lances comprised an oxygen supply tube and a nozzle-head, the outlet opening in the nozzle-head being preferably designed to be converging-diverging (Laval-nozzle).
- the nozzle-heads were produced from preforged blanks by chip removal.
- nozzle-heads with several outlets so-called multi-hole nozzles
- the holes are arranged in a manner that their axes are inclined to the blowing lance axis under a specific angle and the refining agent leaves these holes in several streams so that the reaction area of the oxygen with the melt is enlarged.
- multi-hole nozzles are used which have e.g. three, four, five or six outlet openings.
- the noule-heads for such blowing lances were manufactured exactly as those for the one-hole nozzles.
- the individual parts are primarily produced by forging so that a finegranular structure is present in the material; cast parts have a coarse and porous structure and are unsuitable for this application.
- an inlet piece and a front plate are separately manufactured by drop forging whereupon these parts are worked by means of chip removal and connected with each other via three interposed prefabricated nozzletubes by soldering or welding.
- This way of manufacturing necessitates exact working and fitting of the individual parts, soldering or welding is very time consuming, and great manual dexterity is needed because it is difficult to connect the nozzle tubes, which are arranged very closely side by side, with the front plate and the inlet piece.
- a particular disadvantage resides in that two partition planes are present in that part of the nozzle-head which gets into contact with oxygen; of these planes one lies very closely to the surface of the front plate. In case of flame erosion of the nozzle-head in the vicinity of the outlet openings it may happen that the soldering seam of this partition plane gets undone which would result in a failure of the nozzle-head.
- the invention is aimed at creating a new nozzle-head for oxygen blowing lances with one or sever 1 outlet openings with which these disadvantages and provided are avoided. Furthermore the invention is aimed at a method for producing such nozzle-head in a simple, safe and cheap way guaranteeing an improved, prolonged life.
- a water deflecting body is resting on ribs of the front plate, said body being provided with recesses whose number and shape corresponds to the number and shape of the nozzle tubes, the walls of said recesses surrounding the nozzle tubes for at least two-thirds of their circumference thus forming continuous annular cooling-water canals.
- the method according to the invention for the production of a nozzle-head is characterized by the steps of: producing blanks for the inlet piece and the front plate each with studs in a number corresponding to the number of the nozzle tubes; providing for planar surfaces at the end of the studs of either blank perpendicularly to the nozzle-head axis e.g.
- the combined two blanks are put onto an auxiliary means comprising a plate and guiding pins vertically arranged thereto, said guiding pins engaging into the holes of the blanks thus affording centering and fixing of these parts.
- the two blanks for the inlet piece and the front plate and, if desired, the water deflection body are produced by drop forging from pressed material which was preforged in one or several heats, particularly copper, so that a high degree of shaping is achieved, which amounts to about 5 to 25 fold, preferably 10 to 15 fold, shaping for the blank for the front plate.
- the annular water deflection body may be composed of two parts.
- FIG. 1 a is a vertical sectional view of a nozzle-head connected with a blowing lance according to the known construction and manufacturing technique, which was also employed by applicants so far.
- FIG. 1 b is a horizontal sectional view along line I--] of FIG. 1 a.
- FIG. 2 a is a vertical sectional view of the nozzle-head according to the invention and FIG. 2 b is a horizontal sectional view along line IIII of FIG. 2 a.
- FIGS. 3 a, 3 b and 3 0 illustrate the method according to the invention and show vertical sectional views of the blanks for the inlet piece and the front plate, respectively, and of the water deflecting body.
- FIG. 4 is a vertical sectional view through the blanks for the inlet piece and the front plate which are combined with the help of an auxiliary device according to a specific embodiment of the method according to the invention.
- the nozzle tip which belongs to the art and is shown in FIG. 1 a comprises a nozzle-head 1 which gets into contact with the refining agent, and comprises a water deflecting ring 2 forming a separate constructional part which guides the cooling water to the nozzle-head l.
- the nozzle-head 1 comprises an inlet piece 3, three individual nozzle tubes 4 and the front plate 5 which parts are rigidly connected with each other by soldering or welding.
- the axes of the nozzle tubes 4 are inclined towards the vertical line.
- recesses 6 are provided in the water deflecting ring 2; annular canals are formed between the walls of these recesses and the nozzle tubes 4 through which canals cooling water flows with high speed in the direction shown by the arrows in FIG.
- the nozzle-head 1 is welded or soldered via its inlet piece 3 to the oxygen tube 9 of the blowing lance and via its front plate 5 with the jacket tube 11.
- a water guiding tube is built in which is rigidly connected with the water deflecting ring 2 which is supported on ribs of the front plate 5 so that the front plate is intensively cooled, too.
- Particularly endangered zones of the front plate 5 are the middle part (star) denoted with numeral 12 and the edges 13 in the area of the outlet openings 14 for the oxygen.
- FIG. 2 a shows for ready comparison the nozzle-head according to the invention.
- the nozzle-head 1' comprises only two parts, i.e. the inlet piece 3' with tubular projections 17 and a front plate 5 with tubular projections 16; thus, only three junctures 18 are present which are at a great distance from the surface of the front plate 5' and are lying in one plane, which is perpendicular to the axis 33 of the nozzlehead. This connection cannot come undone owing to the influence of heat because the connecting areas are in about the middle of the nozzle-head 1'.
- the ring 2' around which the water circulates is provided with recesses 6 surrounding the tubes 16 through about two-thirds of their circumference, thus forming continuous annular canals; in FIG. 2a the current of the water is illustrated by arrows.
- the speed with which the water circulates through the nozzle-head is continuously increased in the area of the ring 2 to reach a maximum when the water enters the space defined by the tubes l0, 11.
- the baffle ring 2' rests on narrow ribs 15' (FIG. 21:).
- the ring 2' consists of one piece.
- a groove or notch 20 is provided for engaging adjusting screws 19 for centering the water guiding tube 10 relative to the oxygen tube 9.
- FIG. 3 a shows a blank 21 for the inlet piece 3' which blank is drop forged from a preformed block in one or two heats.
- the blank 21 is provided with three conical studs 22 whose outer shape corresponds to the tubularprojections 17.
- FIG. 30 shows a blank 21 for the inlet piece 3' which blank is drop forged from a preformed block in one or two heats.
- the blank 21 is provided with three conical studs 22 whose outer shape corresponds to the tubularprojections 17.
- FIGS. 1-10 shows a blank 25 for the front plate 5, which blank 25 is formed in the die from a block which is preformed in one or two heats; in this process a 5 to 25 fold total shaping is to take place; a preferably 10 to 15 fold shaping is necessary in order to obtain a fine-granular and dense structure.
- the blanks 21, 25 are preferably made of oxygen-free electrolyte copper. In principle, it is, however, possible to use also other metals, e.g. pure nickel or stainless steel for producing them.
- the blanks 21 25 have an outer shape which makes it possible to form the necessary bevel edges 24, 24 and the groove 20 for connecting the nozzle-head with the blowing lance and for engagement of the adjustment screws 19, respectively, at a later point.
- FIG. 3 a and 3 c the inner contours of the tubular projections l6, 17 is shown in dotted lines.
- planar surfaces 28, 28' are produced which are perpendicular to the axis 33 of the nozzlehead, and central holes 23, 23' are driven in, so that bores '29 (FIG. 4) may be produced going through the studs 22, 26.
- FIG. 3 b the water deflecting ring 2', which is preferably made of steel in one piece, is shown. This ring 2' lies on the supporting surfaces 27 (FIG. 3 c) of the ribs 15' of the front plate 5' when the nozzle-head is joined to the blowing lance.
- FIG. 4 shows an auxiliary device for joining the blanks 21, 25 which device comprises a plate 30 and vertically arranged guiding pins 32.
- holes 29 had been bored into the blanks through the studs 22, 26 within the predetermined, inner contour of the tubular projections l7, 16, which is shown in dotted lines.
- the guiding pins 32 engage in these holes 29 and represent a centering means for the blanks 25, 21.
- a solder in the form of an annular solder foil is inserted, whereupon heating to soldering temperature of about 700 to 900 C in a temperature controlled furnace takes place. Then the blanks are cooled slowly to obtain a firm soldering connection between the blanks 21, 25. If, as shown in FIG.
- a water circulating ring 2' is used made of one piece, it is inserted after the blank 21 is put onto the auxiliary device comprising the plate 30 and the guiding pins 32 whereupon the blank 25 is joined with the blank 21.
- the auxiliary means is removed and mechanical working is started, i.e. the milling or boring, respectively, of the insides of the tubular projections l6, 17, the bevel edges 24, 24, the groove 20 and the support planes 27 (FIG. 3 a or 3 c, respectively).
- the finished nozzlehead 1' together with the water circulating ring may then be welded with the tubes 9, 10, ll of the blowing lance; adjusting screws 19 help to carry out centering of the tube 10.
- 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;
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Nozzles (AREA)
- Furnace Charging Or Discharging (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT783069A AT318673B (de) | 1969-08-14 | 1969-08-14 | Mit einer wassergekühlten Blaslanze verbindbarer Düsenkopf und Verfahren zu seiner Herstellung |
Publications (1)
Publication Number | Publication Date |
---|---|
US3662447A true US3662447A (en) | 1972-05-16 |
Family
ID=3599884
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US61090A Expired - Lifetime US3662447A (en) | 1969-08-14 | 1970-08-05 | Method for producing a nozzle-load for a water cooled blowing lance |
Country Status (13)
Country | Link |
---|---|
US (1) | US3662447A (xx) |
JP (1) | JPS5036405B1 (xx) |
AT (1) | AT318673B (xx) |
BE (1) | BE754652A (xx) |
CA (1) | CA948404A (xx) |
DE (3) | DE7026215U (xx) |
ES (2) | ES382405A1 (xx) |
FI (1) | FI50341C (xx) |
FR (1) | FR2056865A5 (xx) |
GB (1) | GB1318721A (xx) |
LU (1) | LU61505A1 (xx) |
SE (1) | SE382468B (xx) |
ZA (1) | ZA705327B (xx) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3797814A (en) * | 1972-03-27 | 1974-03-19 | Berry Metal Co | Oxygen lance with multi-orificed nozzle |
US3827632A (en) * | 1973-09-13 | 1974-08-06 | Berry Metal Co | Fuel and oxygen lance assembly |
US3835524A (en) * | 1973-08-13 | 1974-09-17 | Massey Welding Co | Method of manufacturing rejuvenated scarfing blocks |
US4052005A (en) * | 1976-03-11 | 1977-10-04 | Berry Metal Company | Oxygen lance nozzle |
US4333527A (en) * | 1979-10-22 | 1982-06-08 | Otis Engineering Corporation | Side pocket mandrel and method of construction |
USRE32441E (en) * | 1979-09-20 | 1987-06-23 | Otis Engineering Corporation | Side pocket mandrel and method of construction |
US5370309A (en) * | 1993-05-19 | 1994-12-06 | A. H. Tallman Bronze Company Limited | Liquid cooled nozzle |
US6217824B1 (en) | 1999-05-20 | 2001-04-17 | Berry Metal Company | Combined forged and cast lance tip assembly |
US6565800B2 (en) * | 2000-05-30 | 2003-05-20 | Technological Resources Pty Ltd | Apparatus for injecting solid particulate material into a vessel |
US20120100496A1 (en) * | 2007-08-06 | 2012-04-26 | Anne Boer | Burner |
US9032623B2 (en) | 2007-08-06 | 2015-05-19 | Shell Oil Company | Method of manufacturing a burner front face |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2712745C2 (de) * | 1977-03-23 | 1979-03-15 | Stahlwerke Peine-Salzgitter Ag, 3150 Peine | Lanzenkopf für Frischlanze |
JPS5446401A (en) * | 1977-09-20 | 1979-04-12 | Tamura Shokai Kk | Electric device containing box |
LU84433A1 (fr) * | 1982-10-22 | 1984-05-10 | Mecan Arbed Dommeldange S A R | Dispositif pour fournir des matieres gazeuses et solides a un bain de metal en voie d'affinage |
RU2051974C1 (ru) * | 1995-01-25 | 1996-01-10 | Александр Леонидович Кузьмин | Наконечник кислородно-конвертерной фурмы |
GB2327259B (en) * | 1997-07-15 | 2001-06-20 | British Steel Plc | Steel making lances |
DE102006010287A1 (de) * | 2006-03-02 | 2007-09-13 | Saar-Metallwerke Gmbh | Sauerstofflanzenkopf |
US20170051370A1 (en) * | 2014-10-10 | 2017-02-23 | Seoul Engineering Co., Ltd. | Lance nozzle, method for manufacturing lance nozzle and apparatus for manufacturing lance nozzle |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2378516A (en) * | 1941-07-02 | 1945-06-19 | Linde Air Prod Co | Manufacture of heating heads and blowpipe nozzles |
US2397084A (en) * | 1943-12-11 | 1946-03-26 | Westinghouse Electric Corp | Method of manufacturing pitotstatic tubes |
US3228612A (en) * | 1963-11-20 | 1966-01-11 | Bethlehem Steel Corp | Liquid-cooled burner for open hearth furnaces |
US3477112A (en) * | 1968-03-08 | 1969-11-11 | Goss Gas Inc | Method for forming torch tips |
-
0
- BE BE754652D patent/BE754652A/xx not_active IP Right Cessation
-
1969
- 1969-08-14 AT AT783069A patent/AT318673B/de not_active IP Right Cessation
-
1970
- 1970-07-11 DE DE7026215U patent/DE7026215U/de not_active Expired
- 1970-07-11 DE DE2034575A patent/DE2034575C3/de not_active Expired
- 1970-07-11 DE DE2058159A patent/DE2058159C3/de not_active Expired
- 1970-07-31 ZA ZA705327*A patent/ZA705327B/xx unknown
- 1970-07-31 JP JP45066713A patent/JPS5036405B1/ja active Pending
- 1970-08-03 ES ES382405A patent/ES382405A1/es not_active Expired
- 1970-08-04 CA CA089,832A patent/CA948404A/en not_active Expired
- 1970-08-05 US US61090A patent/US3662447A/en not_active Expired - Lifetime
- 1970-08-06 FI FI702174A patent/FI50341C/fi active
- 1970-08-11 FR FR7029590A patent/FR2056865A5/fr not_active Expired
- 1970-08-12 LU LU61505D patent/LU61505A1/xx unknown
- 1970-08-13 GB GB3914870A patent/GB1318721A/en not_active Expired
- 1970-08-14 SE SE7011151A patent/SE382468B/xx unknown
-
1972
- 1972-12-29 ES ES1972187281U patent/ES187281Y/es not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2378516A (en) * | 1941-07-02 | 1945-06-19 | Linde Air Prod Co | Manufacture of heating heads and blowpipe nozzles |
US2397084A (en) * | 1943-12-11 | 1946-03-26 | Westinghouse Electric Corp | Method of manufacturing pitotstatic tubes |
US3228612A (en) * | 1963-11-20 | 1966-01-11 | Bethlehem Steel Corp | Liquid-cooled burner for open hearth furnaces |
US3477112A (en) * | 1968-03-08 | 1969-11-11 | Goss Gas Inc | Method for forming torch tips |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3797814A (en) * | 1972-03-27 | 1974-03-19 | Berry Metal Co | Oxygen lance with multi-orificed nozzle |
US3835524A (en) * | 1973-08-13 | 1974-09-17 | Massey Welding Co | Method of manufacturing rejuvenated scarfing blocks |
US3827632A (en) * | 1973-09-13 | 1974-08-06 | Berry Metal Co | Fuel and oxygen lance assembly |
US4052005A (en) * | 1976-03-11 | 1977-10-04 | Berry Metal Company | Oxygen lance nozzle |
USRE32441E (en) * | 1979-09-20 | 1987-06-23 | Otis Engineering Corporation | Side pocket mandrel and method of construction |
US4333527A (en) * | 1979-10-22 | 1982-06-08 | Otis Engineering Corporation | Side pocket mandrel and method of construction |
US5370309A (en) * | 1993-05-19 | 1994-12-06 | A. H. Tallman Bronze Company Limited | Liquid cooled nozzle |
US6217824B1 (en) | 1999-05-20 | 2001-04-17 | Berry Metal Company | Combined forged and cast lance tip assembly |
US6565800B2 (en) * | 2000-05-30 | 2003-05-20 | Technological Resources Pty Ltd | Apparatus for injecting solid particulate material into a vessel |
US20120100496A1 (en) * | 2007-08-06 | 2012-04-26 | Anne Boer | Burner |
US9032623B2 (en) | 2007-08-06 | 2015-05-19 | Shell Oil Company | Method of manufacturing a burner front face |
Also Published As
Publication number | Publication date |
---|---|
FI50341B (xx) | 1975-10-31 |
GB1318721A (en) | 1973-05-31 |
FR2056865A5 (xx) | 1971-05-14 |
DE2034575B2 (de) | 1978-05-24 |
DE2034575A1 (de) | 1971-05-13 |
DE2058159A1 (de) | 1972-02-03 |
JPS5036405B1 (xx) | 1975-11-25 |
DE7026215U (de) | 1971-07-01 |
DE2058159C3 (de) | 1979-03-22 |
ZA705327B (en) | 1971-04-28 |
ES187281U (es) | 1974-01-01 |
SE382468B (sv) | 1976-02-02 |
CA948404A (en) | 1974-06-04 |
ES382405A1 (es) | 1973-04-16 |
DE2058159B2 (de) | 1978-07-13 |
BE754652A (fr) | 1971-01-18 |
AT318673B (de) | 1974-11-11 |
LU61505A1 (xx) | 1970-10-22 |
ES187281Y (es) | 1974-08-16 |
DE2034575C3 (de) | 1979-01-25 |
FI50341C (fi) | 1976-02-10 |
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