US3390563A - Concentric band high pressure forming chambers - Google Patents

Concentric band high pressure forming chambers Download PDF

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Publication number
US3390563A
US3390563A US512641A US51264165A US3390563A US 3390563 A US3390563 A US 3390563A US 512641 A US512641 A US 512641A US 51264165 A US51264165 A US 51264165A US 3390563 A US3390563 A US 3390563A
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US
United States
Prior art keywords
band
bands
teeth
high pressure
concentric
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
Application number
US512641A
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English (en)
Inventor
Jr Francis J Fuchs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Priority to US512641A priority Critical patent/US3390563A/en
Priority to DEW42900A priority patent/DE1290768B/de
Priority to GB54985/66A priority patent/GB1172690A/en
Priority to SE16837/66A priority patent/SE322750B/xx
Priority to FR86878A priority patent/FR1504264A/fr
Application granted granted Critical
Publication of US3390563A publication Critical patent/US3390563A/en
Assigned to AT & T TECHNOLOGIES, INC., reassignment AT & T TECHNOLOGIES, INC., CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE JAN. 3,1984 Assignors: WESTERN ELECTRIC COMPANY, INCORPORATED
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/007—Hydrostatic extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
    • B01J3/04—Pressure vessels, e.g. autoclaves
    • B01J3/048—Multiwall, strip or filament wound vessels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C27/00—Containers for metal to be extruded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/004—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses involving the use of very high pressures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/221—Extrusion presses; Dies therefor extrusion dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/30—Extrusion presses; Dies therefor using directly-acting fluid pressure

Definitions

  • This invention relates to concentric band high pressure forming chambers and more particularly to a high pressure forming chamber wherein a plurality of concentr c bands are rendered successively effective, from the outer band to the inner, to absorb increasing pressures imparted to shape a workpiece positioned within the chamber.
  • metal stock can be more easily shaped and formed when subjected to ultrahigh pressures which are eifective to change the ductile characteristics of the metal.
  • These high pressures can only be generated within special chambers having facilitiesto compensate for the high pressures.
  • High pressured chambers may be constructed by helically winding one or more bands upon each other without intermediate spacing, resulting in the consumation of large amounts of metal. In this arrangement, the high pressures generated within the chamber are successively taken up by the inner band or convolution and then by each succeeding convolution resulting in the subjection of the first convolution to excessively high tension stresses.
  • high pressure vessels may be constructed by providing a succession of concentric but spaced cylinders and then introducing pressurized fluid into the spaces to compensate for the increasing high pressures encountered within a centrally located forming cylinder.
  • the effective operation is dependent upon the availability and flow of pressurized fluid into the spaces.
  • An object of this invention resides in a new and improved concentric band high pressure forming chamber.
  • Another object resides in a forming chamber having a plurality of concentric bands arranged and constructed to successively absorb, from the outer band to the inner band, pressures generated within the forming chamber.
  • a further object of the invention is the provision of a multi-band high pressure vessel wherein each band has teeth formed on opposite sides and at opposite ends, which teeth mesh and move into successive interlocking engagement as pressure in the chamber is progressively increased.
  • the present invention contemplates a plurality of concentric bands mounted to provide a high pressure forming chamber wherein pressures generated within the chambers impart expanding tension forces to each successive band progressing inwardly from the outer band.
  • each band comprises successively smaller lengths of sheet metal having oppositely tapered ends on which teeth are formed.
  • Each band is bent to form a ring so that teeth on the opposite ends are positioned in a meshing relationship.
  • Each succeeding outer band compresses the preceding inner band to provide successively increasing gaps or spaces between the teeth.
  • the initial load in the form of hoop tensile stresses is taken up by the outer band which expands to allow the next preceding inner band to expand and move the teeth on this band into interlocking engagement to absorb the increased expanding pressure load.
  • the bands are thus successively rendered effective progressing from the outer to the inner band to take up the increases in pressure generated within the chamber.
  • FIG. 1 is a side elevational view, partially in section, showing a high pressure forming chamber embodying the principles of the present invention
  • FIG. 2 is a cross sectional view taken along line 2-2 of FIG. 1 illustrating an arrangement of concentric toothed bands surrounding the high pressure forming chamber;
  • FIG. 3 is a top plan view of one toothed band that may be bent to form one of the concentric bands.
  • FIG. 4 is a greatly enlarged view of one of the inner bands particularly illustrating the spacing between the teeth formed on opposite sides and ends of the band.
  • a billet 10 of metal which is to be shaped by subjection to high pressures in a chamber 11.
  • the billet may be extruded or shaped through an extrusion orifice 12.
  • certain metals such as copper, steel, etc. are subjected to ultra-high pressures, their ductile characteristics improve to permit more facile shaping. This increased ductility allows for a more uniform plastic flow of the metal, thus, permitting the shaping of articles that heretofore were not considered suitable for pressure forming.
  • the chamber 11 comprises an inner sleeve 13 surrounded by a plurality of concentric bands 16, 17, and 18 which are rendered effective, from the outer to the inner, to successively take up increases in pressure generated within the chamber 11.
  • the sleeve and bands are supported between a lower plate 20 and an upper plate 19 held together by four or more tie bolts 21.
  • the upper plate 19 is provided with a small downwardly projecting hub 22 which engages a seal 23 meshing against the top of the sleeve 13.
  • the outer portion of the hub may also abut a small portion of the top edge of the band 16.
  • the top plate 19 is provided with a bore 26 which extends through the hub 22 into the chamber 11. Slidably mounted within this bore is a. piston 28 projecting from a high pressure cylinder 29.
  • the lower plate 20 which is provided with a bore 31 to receive a support standard 32 mounted on a bolster plate 33.
  • Plate 20 may be forcefitted or otherwise secured to the standard 32 so that the lower plate supports the over-all forming chamber.
  • a second ring-like seal 36 is interposed between the plate 20 and the sleeve 13 to preclude the exit of forming fluid from the chamber 11.
  • the extrusion orifice 12 formed in the standard 32 extends through a necked-down portion of a bore 37 drilled through the standard.
  • a piston 38 Slidably mounted within the bore 37 is a piston 38 extending from a high pressure fluid cylinder 39.
  • a seal 41 is fitted in a circumferential slot machined in the wall of the bore 37.
  • the chamber formed by the bore 37 and the piston 38 is filled with fluid which is pressurized and serves to receive the ex truded billet 10.
  • each band such as band 16 when in a straight line position (see FIG. 3) is in eifect rhornboidal in shape, that is, the band has a pair of parallel smooth sides 42 and 43 and adjacent toothed tapered sides 44 and 46 that are at oblique angles to the parallel sides.
  • the toothed sides have right-angular teeth 47 and 48.
  • the teeth may also be of a different shape, provided that, when the band is bent into a ring and the teeth are fitted into each other, there will be gaps between the sides of the teeth.
  • the teeth in this instance should be of sufiicient length so that the top of each tooth engages the bottom of the space between the pair of teeth into which the tooth is fitted.
  • FIG. 2 where it is shown that the teeth on the outer band 18 are force fitted into meshing engagement so that there is no space between the teeth.
  • the natural resilience of the metallic band 18 maintains this force fit meshing engagement of the teeth.
  • the outer ring 18 may also be constructed as a continuous band without the toothed construction.
  • the next succeeding inner band 17 is selected to be of a length sufficient to be compressed by the outer band 18. In this instance, with the band 17 formed in a ring and compressed to a diameter less than it would be if the band was not constrained by the outer band 18, there is a gap 52' between adjacent fitted teeth.
  • the band 16 is selected to be of a length so as to be constrained by the band 17 to provide a gap 53 which is larger than the gap 52'.
  • the piston 28 is Withdrawn from the chamber 11 and a billet is placed over the orifice 12 on the standard 32.
  • the chamber 11 is filled with fluid and the cylinder 29 receives high pressure fluid to force the piston 28 down into the chamber 11.
  • high pressure fluid is also admitted to the cylinder 39 to advance the piston 38 to pressurize the fluid within the bore 37.
  • the pressure builds up in the chamber 11 to act on the billet 10 and extrude the billet through the orifice 12.
  • the pressurized fluid in the chamber 11 is of a magnitude sufficient to change the ductile characteristics of the billet 10; hence, facilitating the extrusion through the orifice 12.
  • the pressurized fluid within the bore 37 opposes the extrusion and prevents the extrusion of the billet until the pressure within the chamber 1 1 is built up to a range necessary to render the billet 10 ductile.
  • These pressures are of tremendous magnitude and may be from 300,000 p.s.i. to an excess of 1,000,000 p.s.i. depending upon the pressure necessary to render the billet ductile.
  • each band for rendering said bands effective successively from the outer band to the inner band, for absorbing radially outwardly expanding forces emanating from the center of the vessel.
  • a first wall member comprising a band having opposed tapered ends
  • a second wall member comprising a second hand having opposed ends and concentrically positioned around said first band
  • said band having teeth formed on opposite ends and positioned to mesh with each other
  • each of said bands having teeth formed on opposite ends to mesh with each other
  • each of said bands from the outer to the inner being of successively smaller lengths that each succeeding band is compressed to provide successively increasing series of gaps between the meshing teeth of each band.
  • each of said overlapping ends having a set of meshing teeth
  • an outer band for compressing said concentric bands to form successively increasing gaps between each set of teeth on each succeeding band
  • a pressure vessel comprising:
  • each band of said plurality provided with means for limiting the radially outward expansion thereof;
  • each band for constricting the next adjacent radially inward band below its radially outward expandable limit
  • each band of said plurality predetermined such that, upon the radially outward expansion of said bands of said plurality, such bands expand to 5 their respective radially outward limits successively 2,284,761 radially inwardly.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Actuator (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
US512641A 1965-12-09 1965-12-09 Concentric band high pressure forming chambers Expired - Lifetime US3390563A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US512641A US3390563A (en) 1965-12-09 1965-12-09 Concentric band high pressure forming chambers
DEW42900A DE1290768B (de) 1965-12-09 1966-12-03 Hochdruckgefaess aus einer Mehrzahl von konzentrisch angeordneten Baendern
GB54985/66A GB1172690A (en) 1965-12-09 1966-12-08 High Pressure Chambers.
SE16837/66A SE322750B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1965-12-09 1966-12-08
FR86878A FR1504264A (fr) 1965-12-09 1966-12-09 Chambre de formage à bandes concentriques pour hautes pressions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US512641A US3390563A (en) 1965-12-09 1965-12-09 Concentric band high pressure forming chambers

Publications (1)

Publication Number Publication Date
US3390563A true US3390563A (en) 1968-07-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
US512641A Expired - Lifetime US3390563A (en) 1965-12-09 1965-12-09 Concentric band high pressure forming chambers

Country Status (5)

Country Link
US (1) US3390563A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE1290768B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR1504264A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1172690A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
SE (1) SE322750B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3484806A (en) * 1968-03-06 1969-12-16 Atomic Energy Commission Hydrostatic extrusion apparatus
US3528269A (en) * 1967-03-03 1970-09-15 Asea Ab Method of extrusion with liquidpressure and means for carrying out the method
US3640111A (en) * 1969-02-14 1972-02-08 Asea Ab Press for hydrostatic extrusion having a composite cylinder externally excused to high pressure
DE2613441A1 (de) * 1976-03-30 1977-10-13 Krupp Gmbh Mehrlagenbehaelter
US4484689A (en) * 1983-08-08 1984-11-27 Fuchs Jr Francis J Axially segmented pressure vessel
WO2008031408A1 (de) * 2006-09-12 2008-03-20 Technische Universität Berlin Verfahren und vorrichtung zum herstellen eines gepressten stranges mittels strangpressen mit gegendruck
WO2011011900A3 (es) * 2009-07-30 2011-07-14 Mulet Martinez Mauricio Eduardo Multicamara y motobombas con varias cámaras por motobomba
CN104511514A (zh) * 2015-01-14 2015-04-15 南京理工大学 一种模芯带活动芯撑的静液挤压空心型材装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2597185B1 (fr) * 1986-04-11 1993-04-09 Paret Paul Enceinte pressurisee pouvant etre amenagee de maniere a constituer un " autoclave de sterilisation "

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1696725A (en) * 1926-02-12 1928-12-25 Thomas E Murray Drum, pipe, fittings, etc.
US1958582A (en) * 1928-11-16 1934-05-15 Babcock & Wilcox Co Drum with removable head for vapors under pressure
US2253093A (en) * 1938-06-04 1941-08-19 William E Currie High-pressure vessel
US2273736A (en) * 1938-12-05 1942-02-17 Raymond Gwynne Method of making pressure vessles and the like
US2284761A (en) * 1938-08-18 1942-06-02 Goodrich Co B F Rubber lined article and method of making the same
US2326176A (en) * 1938-02-18 1943-08-10 Schierenbeck Julius High-pressure vessel
US2964209A (en) * 1958-08-25 1960-12-13 Republic Aviat Corp High strength casing
US2984379A (en) * 1956-07-27 1961-05-16 Csepel Vas Es Femmuvek Transport of industrial gases on rolling stock
US3123242A (en) * 1964-03-03 hahn etal
US3311253A (en) * 1965-03-24 1967-03-28 Hahn & Clay Releasable vessel coupling

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR797835A (fr) * 1935-02-07 1936-05-05 Matériel à haute pression
US2480369A (en) * 1941-11-07 1949-08-30 Smith Corp A O Manufacture of multilayer cylinder for high-pressure vessels
US2652943A (en) * 1947-01-09 1953-09-22 Williams Sylvester Vet High-pressure container having laminated walls
DE1138593B (de) * 1959-08-29 1962-10-25 Basf Ag Hochdruckwickelkoerper, insbesondere fuer pulsierende Innendruecke

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3123242A (en) * 1964-03-03 hahn etal
US1696725A (en) * 1926-02-12 1928-12-25 Thomas E Murray Drum, pipe, fittings, etc.
US1958582A (en) * 1928-11-16 1934-05-15 Babcock & Wilcox Co Drum with removable head for vapors under pressure
US2326176A (en) * 1938-02-18 1943-08-10 Schierenbeck Julius High-pressure vessel
US2253093A (en) * 1938-06-04 1941-08-19 William E Currie High-pressure vessel
US2284761A (en) * 1938-08-18 1942-06-02 Goodrich Co B F Rubber lined article and method of making the same
US2273736A (en) * 1938-12-05 1942-02-17 Raymond Gwynne Method of making pressure vessles and the like
US2984379A (en) * 1956-07-27 1961-05-16 Csepel Vas Es Femmuvek Transport of industrial gases on rolling stock
US2964209A (en) * 1958-08-25 1960-12-13 Republic Aviat Corp High strength casing
US3311253A (en) * 1965-03-24 1967-03-28 Hahn & Clay Releasable vessel coupling

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3528269A (en) * 1967-03-03 1970-09-15 Asea Ab Method of extrusion with liquidpressure and means for carrying out the method
US3484806A (en) * 1968-03-06 1969-12-16 Atomic Energy Commission Hydrostatic extrusion apparatus
US3640111A (en) * 1969-02-14 1972-02-08 Asea Ab Press for hydrostatic extrusion having a composite cylinder externally excused to high pressure
DE2613441A1 (de) * 1976-03-30 1977-10-13 Krupp Gmbh Mehrlagenbehaelter
US4244482A (en) * 1976-03-30 1981-01-13 Fried, Krupp Gesellschaft Mit Beschrankter Haftung Multi-layer container
US4484689A (en) * 1983-08-08 1984-11-27 Fuchs Jr Francis J Axially segmented pressure vessel
WO2008031408A1 (de) * 2006-09-12 2008-03-20 Technische Universität Berlin Verfahren und vorrichtung zum herstellen eines gepressten stranges mittels strangpressen mit gegendruck
WO2011011900A3 (es) * 2009-07-30 2011-07-14 Mulet Martinez Mauricio Eduardo Multicamara y motobombas con varias cámaras por motobomba
CN102575658A (zh) * 2009-07-30 2012-07-11 毛利西奥·爱德华多·穆莱特·马丁内斯 多腔室及具有用于多腔室的电动泵
CN104511514A (zh) * 2015-01-14 2015-04-15 南京理工大学 一种模芯带活动芯撑的静液挤压空心型材装置

Also Published As

Publication number Publication date
DE1290768B (de) 1969-03-13
FR1504264A (fr) 1967-12-01
GB1172690A (en) 1969-12-03
SE322750B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1970-04-20

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AS Assignment

Owner name: AT & T TECHNOLOGIES, INC.,

Free format text: CHANGE OF NAME;ASSIGNOR:WESTERN ELECTRIC COMPANY, INCORPORATED;REEL/FRAME:004251/0868

Effective date: 19831229