US3097742A - Lubrication method for hot-extrusion press - Google Patents

Lubrication method for hot-extrusion press Download PDF

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Publication number
US3097742A
US3097742A US66518A US6651860A US3097742A US 3097742 A US3097742 A US 3097742A US 66518 A US66518 A US 66518A US 6651860 A US6651860 A US 6651860A US 3097742 A US3097742 A US 3097742A
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block
hot
glass
press
plunger
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Expired - Lifetime
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US66518A
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Lamberty Matthias
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Vodafone GmbH
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Mannesmann AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/32—Lubrication of metal being extruded or of dies, or the like, e.g. physical state of lubricant, location where lubricant is applied

Definitions

  • This invention is for a lubricating process used with hot-extrusion presses for metals that are hard to deform and more particularly where the press is a horizontal hotextrusion press. While vitreous lubricating mediums in powder form are a good lubricant, difficulty has been encountered in placing the powder in uniform layers between the block that is to be pressed and the die and where required also between the block to be pressed and the plunger of the press. This difificulty is particularly present in the case of horizontal hot-extrusion presses. To avoid this difliculty heretofore glass sheets or discs made of multi-cellular glass or foam glass have been used. It has also been known to use sheets of glass powdered with a binding medium.
  • lubricating mediums in powder form, such as glass powder, or the like, which is inserted in the press in disc-shaped or annular packages or containers which are stiif enough to retain their shape.
  • the shape of the packages can be chosen so that they fit the neighboring surfaces of the block and parts of the press. They advantageously may be shaped by two hollow or shell-like parts inter-fitting with each other.
  • This package or container for the glass powder or the like can be made from thin metal in the form of sheets, such for example as soft steel or non-ferrous metals such as aluminum and its alloys. It can also be made of non-metallic materials which lose their shape either by melting under the influence of the heat of the block or that burn away under that heat. Synthetic substances are suitable examples of such nonmetallic materials.
  • glass powder 5 is shown as a lubricating medium and is inserted in the press in annular packages, each consisting of two annular shells 6a, 6b and 7a, 712 respectively that interfit or engage with one another to provide a closure.
  • These packages are located in the receiver 1 of the extrusion press between the block 2 which is to be extruded on the one hand and the die 3 of the press.
  • Another package is shown between the block 2 and the plunger 4 of the press.
  • a disc-shaped package can be used. In this case, of course, it is a solid block that is being pressed.
  • a metal block is forced through a die by a plunger, and the block is lubricated during extrusion by a glass lubricant
  • the improvement which comprises inserting into a heat destructible container, a desired quantity of powdered glass, placing said container, containing the glass in powdered form, next to the block, and extruding said block by means of said plunger, thus destroying said container and enabling the powdered glass to lubricate the block during extrusion.

Description

July 16, 1963 M. LAMBERTY LUBRICATION METHOD FOR HOT-EXTRUSION PRESS Filed NOV- 1, 1960 //7 van/0r Muff/n05 Lamber/y By his of/omeys United States Patent Ofice 3,097,742 Patented July 16, 1963 3,097,742 LUBRICATION METHglsFsoR HOT-EXTRUSION P Matthias Lamberty, Remscheid, Germany, assignor to Mannesmann Aktiengesellschaft, Dusseldorf, Germany, a German company Filed Nov. 1, 1960, Ser. No. 66,518 Claims priority, application Germany Nov. 5, 1959 4 Claims. (Cl. 207-) This invention is for a lubricating process used with hot-extrusion presses for metals that are hard to deform and more particularly where the press is a horizontal hotextrusion press. While vitreous lubricating mediums in powder form are a good lubricant, difficulty has been encountered in placing the powder in uniform layers between the block that is to be pressed and the die and where required also between the block to be pressed and the plunger of the press. This difificulty is particularly present in the case of horizontal hot-extrusion presses. To avoid this difliculty heretofore glass sheets or discs made of multi-cellular glass or foam glass have been used. It has also been known to use sheets of glass powdered with a binding medium.
All these forms of lubricating medium have their difliculties and applicants invention is characterized by the use of vitreous lubricating mediums in powder form, such as glass powder, or the like, which is inserted in the press in disc-shaped or annular packages or containers which are stiif enough to retain their shape. The shape of the packages can be chosen so that they fit the neighboring surfaces of the block and parts of the press. They advantageously may be shaped by two hollow or shell-like parts inter-fitting with each other. This package or container for the glass powder or the like can be made from thin metal in the form of sheets, such for example as soft steel or non-ferrous metals such as aluminum and its alloys. It can also be made of non-metallic materials which lose their shape either by melting under the influence of the heat of the block or that burn away under that heat. Synthetic substances are suitable examples of such nonmetallic materials.
In the drawing has been shown a vertical view, in section, through the middle of a hot-extrusion press with a plunger in which a novel vitreous lubricating medium package is shown located both between the block and die and also between the block and the plunger.
Referring to the drawing, glass powder 5 is shown as a lubricating medium and is inserted in the press in annular packages, each consisting of two annular shells 6a, 6b and 7a, 712 respectively that interfit or engage with one another to provide a closure. These packages are located in the receiver 1 of the extrusion press between the block 2 which is to be extruded on the one hand and the die 3 of the press. Another package is shown between the block 2 and the plunger 4 of the press. if instead of having a perforating mandrel 8 in the press as shown in the drawing the mandrel is omitted, a disc-shaped package can be used. In this case, of course, it is a solid block that is being pressed.
What is claimed is:
1. In a method for hot extruding metals which are difiicult to deform, in which a metal block is forced through a die by a plunger, and the block is lubricated during extrusion by a glass lubricant, the improvement which comprises inserting into a heat destructible container, a desired quantity of powdered glass, placing said container, containing the glass in powdered form, next to the block, and extruding said block by means of said plunger, thus destroying said container and enabling the powdered glass to lubricate the block during extrusion.
2. The method claimed in claim 1, in which the container consists of two interfitting shells, and comprising inserting the powder in one of said shells.
3. The method claimed in claim 2. in which the shells are made of a sheet metal.
4. The method claimed in claim 2 in which the shells are of annular shape with a central opening and the plunger comprises a mandrel; and comprising passing the mandrel through the central opening in the shells.
References Cited in the file of this patent UNITED STATES PATENTS 2,538,917 Sejournet et al Jan. 23, 1951 2,630,220 Sejournet Mar. 3, 1953 2,893,555 Buffet et a1. July 7, 1959 2,908,587 Evans et a1. Oct. 13, 1959 2,946,437 Edgecombe July 26, 1960 FOREIGN PATENTS 689,051 Great Britain Mar. 18, 1953 699,120 Great Britain Oct. 28, 1953 703,161 Germany Mar. 3, 1941 1,060,464 France Nov. 18, 1953

Claims (1)

1. IN A METHOD FOR HOT EXTRUDING METALS WHICH ARE DIFFICULT TO DEFORM, IN WHICH A METAL BLOCK ID FORCED THROUGH A DIE BY A PLUNGER, AND THE BLOCK IS LUBRICATED DURING EXTRUSION BY A GLASS LUBRICANT, THE IMPROVEMENT WHICH COMPRISES INSERTING INTO A HEAT DESTRUCTIBLE CONTAINER, A DESIRED QUANTITY OF POWERED GLASS, PLACING SAID CONTAINER, CONTAINING THE GLASS IN POWDERED FORM, NEXT TO THE BLOCK, AND EXTRUDING SAID BLOCK BY MEANS OF SAID
US66518A 1959-11-05 1960-11-01 Lubrication method for hot-extrusion press Expired - Lifetime US3097742A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3182474A (en) * 1959-10-07 1965-05-11 Cefilac Hot extrusion of materials
US3254401A (en) * 1964-07-10 1966-06-07 Corning Glass Works Protection and lubrication of metals at high temperatures
US3478561A (en) * 1965-10-27 1969-11-18 Davy & United Eng Co Ltd Extrusion
US3633396A (en) * 1969-12-08 1972-01-11 Cefilac Method and apparatus for improvements in the extrusion of metals and alloys
US3919870A (en) * 1973-08-17 1975-11-18 Mannesmann Roehren Werke Ag Method of cleaning tool parts in extruders
US11173530B2 (en) * 2017-07-14 2021-11-16 Isinnova S.R.L. Method for cleaning an extrusion die

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE703161C (en) * 1938-01-23 1941-03-03 Ver Deutsche Metallwerke Akt G Process for pressing nickel and other metals to be processed at very high pressing temperatures
US2538917A (en) * 1941-11-22 1951-01-23 Comptoir Ind Etirage Extrusion of metals
US2630220A (en) * 1949-01-19 1953-03-03 Comptoir Ind Etirage Lubricating process with fibrous material in the hot extrusion of metals
GB689051A (en) * 1950-05-06 1953-03-18 James Booth & Company Ltd Improvements in and relating to extruding aluminium alloys
GB699120A (en) * 1950-05-03 1953-10-28 Comptoir Ind Etirage Metal extrusion
FR1060464A (en) * 1952-07-21 1954-04-02 L Morane Ets Lubricant suitable for high temperatures
US2893555A (en) * 1955-04-20 1959-07-07 Comptoir Ind Etirage Lubrication in the hot extrusion of metals
US2908587A (en) * 1954-04-12 1959-10-13 Babcock & Wilcox Co Method of coating a cylindrical metal element
US2946437A (en) * 1955-05-31 1960-07-26 Babcock & Wilcox Co Extrusion of metal billets

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE703161C (en) * 1938-01-23 1941-03-03 Ver Deutsche Metallwerke Akt G Process for pressing nickel and other metals to be processed at very high pressing temperatures
US2538917A (en) * 1941-11-22 1951-01-23 Comptoir Ind Etirage Extrusion of metals
US2630220A (en) * 1949-01-19 1953-03-03 Comptoir Ind Etirage Lubricating process with fibrous material in the hot extrusion of metals
GB699120A (en) * 1950-05-03 1953-10-28 Comptoir Ind Etirage Metal extrusion
GB689051A (en) * 1950-05-06 1953-03-18 James Booth & Company Ltd Improvements in and relating to extruding aluminium alloys
FR1060464A (en) * 1952-07-21 1954-04-02 L Morane Ets Lubricant suitable for high temperatures
US2908587A (en) * 1954-04-12 1959-10-13 Babcock & Wilcox Co Method of coating a cylindrical metal element
US2893555A (en) * 1955-04-20 1959-07-07 Comptoir Ind Etirage Lubrication in the hot extrusion of metals
US2946437A (en) * 1955-05-31 1960-07-26 Babcock & Wilcox Co Extrusion of metal billets

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3182474A (en) * 1959-10-07 1965-05-11 Cefilac Hot extrusion of materials
US3254401A (en) * 1964-07-10 1966-06-07 Corning Glass Works Protection and lubrication of metals at high temperatures
US3478561A (en) * 1965-10-27 1969-11-18 Davy & United Eng Co Ltd Extrusion
US3633396A (en) * 1969-12-08 1972-01-11 Cefilac Method and apparatus for improvements in the extrusion of metals and alloys
US3919870A (en) * 1973-08-17 1975-11-18 Mannesmann Roehren Werke Ag Method of cleaning tool parts in extruders
US11173530B2 (en) * 2017-07-14 2021-11-16 Isinnova S.R.L. Method for cleaning an extrusion die

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