US2904829A - Devices for the rolling of strip from metal powder - Google Patents
Devices for the rolling of strip from metal powder Download PDFInfo
- Publication number
- US2904829A US2904829A US581446A US58144656A US2904829A US 2904829 A US2904829 A US 2904829A US 581446 A US581446 A US 581446A US 58144656 A US58144656 A US 58144656A US 2904829 A US2904829 A US 2904829A
- Authority
- US
- United States
- Prior art keywords
- roll
- strip
- discs
- metal powder
- rolling
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/18—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by using pressure rollers
Definitions
- This invention relates to the design of a rolling mill for the manufacture of strip from metal powder.
- the problem arises of achieving a uniform compression of the metal powder over the entire width of the cross-section. It is in this case particularly difficult to roll a strip whose edges are uniformly dense and of a rectangular shape.
- discs projecting beyond the edge of the roll are provided for the lateral limitation of the width of the material, where the discs are movable in the direction of the axis of the rolls, and can be pushed by means of pressure rollers or sliding shoes against the roll edge, in the neighbourhood of the gap between the rolls.
- the discs can be supported here on pins arranged laterally on the side of the roll body. It is in this case convenient to provide for slight play between these pins and the openings in the disc, so that the disc can follow easily the lateral pressure exerted against it.
- a support of this nature can also be achieved by making the discs engage with projections in grooves accommodated in the axial direction on the roll shafts.
- the discs are made elastic. Also, at the back of the gap between the rolls pressure rollers are provided, which slightly lift the edge of the discs from the roll body. This ensures that the strip can be lifted without friction off the roll.
- the invention enables also the roll body faces to be reground without dilficulty, which is not the case if fixed edge discs are employed, when grinding has an unfavourable elfect on the play in the length of the roll body.
- Figure l is a diagrammatic side view of the device
- Figure 2 is the front view
- Figure 3 is the plan view.
- a powder hopper is accommodated above the gap between the rolls, where the powder hopper can be given any desired shape and does not form an object of the invention.
- the two rolls 2 and 3 are arranged underneath the said powder hopper.
- the width of the gap between the rolls can be seen in Figure 3.
- discs 4 are accommodated whose task is to limit the roll gap laterally, as shown in Figure 3.
- These discs 4 are supported on three pins 9 in such a way that they can move in the direction of the roll axis.
- pressure rollers 6 in rolling contact with the discs 4 are arranged so that they exert a pressure against these discs 4 in the direction of the roll body.
- the rolls 2 and 3 are supported in the usual way by roll shafts 5.
- Pressure rollers 8 are provided at the back of the roll gap, which slightly lift the edge of the elastic disc 4 off the roll body, so that the strip 7 can be lifted oif the roll without friction.
- a rolling mill for producing metal strip from metal powder comprising: at least two rolls, means for rotating the rolls, means for feeding metal powder to a gap between the rolls, two axially movable discs carried by one of the rolls, one disc being at each end of the roll, the radius of each disc exceeding the radius of the roll that carries it by an amount at least equal to the width of the roll gap, pressure rollers for pressing the discs against the ends of the disc-carrying roll in the neighbourhood of the roll gap, and pins extending from the ends of the disc-carrying roll parallel to the roll axis, the discs being freely slidable on these pins.
- a rolling mill for producing metal strip from metal powder comprising: at least two rolls, means for rotating the rolls, means for feeding metal powder to a gap between the rolls, two axially movable discs of elastic material carried by one of the rolls, one disc being at each end of the roll, the radius of each disc exceeding the radius of the roll that carries it by an amount at least equal to the width of the roll gap, means for pressing the discs against the ends of the disc-carrying roll in the neighbourhood of the roll gap, and rollers adapted to lift the edges of the discs away from the adjacent ends of the roll at a position beyond the roll gap.
Description
Sept. 22, 1959 I F. HECK 2,904,829
DEVICES FOR THE ROLLING OF STRIP FROM METAL POWDER Filed April 30, 1956 I Heck fl-t Patented Sept. 22, 1959 I &Q
DEVICES FUR THE ROLLING 0F STRIP FROM METAL POWDER Friedrich Heck, Hamburg-Bergedorf, Germany Application April 30, 1956, Serial No. 581,446
Claims priority, application Germany May 16, 1955 2 Claims. (Cl. 18-9) This invention relates to the design of a rolling mill for the manufacture of strip from metal powder. In devices of this nature the problem arises of achieving a uniform compression of the metal powder over the entire width of the cross-section. It is in this case particularly difficult to roll a strip whose edges are uniformly dense and of a rectangular shape. In the devices which have been proposed or disclosed in the past, there is frequently a reduction of the quantity of material along the edges, which produces notches at right angles to the direction of rolling, when the rolling of the sintered strip is continued. In such cases it is necessary to trim the edges of the manufactured strip, so that considerable losses occur.
According to the present invention, discs projecting beyond the edge of the roll are provided for the lateral limitation of the width of the material, where the discs are movable in the direction of the axis of the rolls, and can be pushed by means of pressure rollers or sliding shoes against the roll edge, in the neighbourhood of the gap between the rolls. The discs can be supported here on pins arranged laterally on the side of the roll body. It is in this case convenient to provide for slight play between these pins and the openings in the disc, so that the disc can follow easily the lateral pressure exerted against it. A support of this nature can also be achieved by making the discs engage with projections in grooves accommodated in the axial direction on the roll shafts.
In a preferred embodiment of the invention, the discs are made elastic. Also, at the back of the gap between the rolls pressure rollers are provided, which slightly lift the edge of the discs from the roll body. This ensures that the strip can be lifted without friction off the roll.
The strip edges, which are sensitive while the strip is in the raw state, are therefore protected.
The invention enables also the roll body faces to be reground without dilficulty, which is not the case if fixed edge discs are employed, when grinding has an unfavourable elfect on the play in the length of the roll body.
The drawing shows an example of an embodiment of the invention:
Figure l is a diagrammatic side view of the device;
Figure 2 is the front view; and
Figure 3 is the plan view.
A powder hopper is accommodated above the gap between the rolls, where the powder hopper can be given any desired shape and does not form an object of the invention. The two rolls 2 and 3 are arranged underneath the said powder hopper. The width of the gap between the rolls can be seen in Figure 3. On both sides of the roll 2, Figure 2, discs 4 are accommodated whose task is to limit the roll gap laterally, as shown in Figure 3. These discs 4 are supported on three pins 9 in such a way that they can move in the direction of the roll axis. Also, pressure rollers 6 in rolling contact with the discs 4 are arranged so that they exert a pressure against these discs 4 in the direction of the roll body. The rolls 2 and 3 are supported in the usual way by roll shafts 5. Pressure rollers 8 are provided at the back of the roll gap, which slightly lift the edge of the elastic disc 4 off the roll body, so that the strip 7 can be lifted oif the roll without friction.
What is claimed is:
1. A rolling mill for producing metal strip from metal powder, comprising: at least two rolls, means for rotating the rolls, means for feeding metal powder to a gap between the rolls, two axially movable discs carried by one of the rolls, one disc being at each end of the roll, the radius of each disc exceeding the radius of the roll that carries it by an amount at least equal to the width of the roll gap, pressure rollers for pressing the discs against the ends of the disc-carrying roll in the neighbourhood of the roll gap, and pins extending from the ends of the disc-carrying roll parallel to the roll axis, the discs being freely slidable on these pins.
2. A rolling mill for producing metal strip from metal powder, comprising: at least two rolls, means for rotating the rolls, means for feeding metal powder to a gap between the rolls, two axially movable discs of elastic material carried by one of the rolls, one disc being at each end of the roll, the radius of each disc exceeding the radius of the roll that carries it by an amount at least equal to the width of the roll gap, means for pressing the discs against the ends of the disc-carrying roll in the neighbourhood of the roll gap, and rollers adapted to lift the edges of the discs away from the adjacent ends of the roll at a position beyond the roll gap.
References Cited in the file of this patent UNITED STATES PATENTS 870,249 Patterson Nov. 5, 1907 1,185,399 Hayes Nov. 30, 1916 1,289,275 Sargent Dec. 31, 1918 1,361,970 Dickey Dec. 14, 1920 2,341,732 Marvin Feb. 15, 1944 2,349,829 Nydegger et al. May 30, 1944 2,397,608 Johnson Apr. 2, 1946 2,811,750 Cofek Nov. 5, 1957 2,817,875 Harris et al. Dec. 31, 1957
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2904829X | 1955-05-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2904829A true US2904829A (en) | 1959-09-22 |
Family
ID=8000894
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US581446A Expired - Lifetime US2904829A (en) | 1955-05-16 | 1956-04-30 | Devices for the rolling of strip from metal powder |
Country Status (1)
Country | Link |
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US (1) | US2904829A (en) |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3017666A (en) * | 1958-03-29 | 1962-01-23 | Stamicarbon | Apparatus for producing a smooth-surfaced body consisting of a granular material |
US3124838A (en) * | 1964-03-17 | Metal coated particles | ||
US3162708A (en) * | 1961-06-21 | 1964-12-22 | Sherritt Gordon Mines Ltd | Method for compacting metal powder |
US3203045A (en) * | 1962-03-22 | 1965-08-31 | Mannesmann Ag | Rolling mills for metal powder rolling |
US3250104A (en) * | 1962-11-13 | 1966-05-10 | Battelle Development Corp | High-temperature rolling mill |
US3298060A (en) * | 1963-06-07 | 1967-01-17 | Martin H Michalak | Methods and apparatus for compacting powdered metal to form strips |
US3309735A (en) * | 1963-05-03 | 1967-03-21 | Schloemann Ag | Methods and means for rolling metal powder |
US3433047A (en) * | 1967-01-26 | 1969-03-18 | Reynolds Metals Co | Metal rolling system |
US3517537A (en) * | 1967-09-15 | 1970-06-30 | Southwire Co | Method of hot-forming continuously cast aluminum |
US3565159A (en) * | 1968-07-31 | 1971-02-23 | Ural Z Tyazhelogo Mash Im S Or | Device for continuous production of sheet metal |
US3589308A (en) * | 1969-06-16 | 1971-06-29 | Lehara Inc Werner | Patty making machine |
US3648624A (en) * | 1970-08-07 | 1972-03-14 | Lehara Inc Werner | Patty making machine |
US3689209A (en) * | 1970-07-27 | 1972-09-05 | Gleb Andreevich Vinogradov | Apparatus for manufacturing rolled products from powdery materials |
US3746071A (en) * | 1965-04-01 | 1973-07-17 | Iit Res Inst | Method for treating materials |
US4144009A (en) * | 1976-07-16 | 1979-03-13 | British Steel Corporation | Apparatus for production of metal strip |
US4167377A (en) * | 1977-07-29 | 1979-09-11 | The International Nickel Company, Inc. | Powder rolling apparatus |
US4231729A (en) * | 1979-10-09 | 1980-11-04 | Huntington Alloys Inc. | Powder rolling apparatus |
US4820466A (en) * | 1985-01-31 | 1989-04-11 | Zachariades Anagnostis E | Process for obtaining ultra-high modulus products |
EP3590696A1 (en) * | 2018-07-02 | 2020-01-08 | Saalasti Oy | A roll press arrangement, press roll apparatus and a method for dewatering fibrous granular feedstock |
DE102020104526A1 (en) | 2020-02-20 | 2021-08-26 | Maschinenfabrik Köppern Gmbh & Co. Kg | High pressure roller press |
DE202021103408U1 (en) | 2021-06-25 | 2022-04-04 | Maschinenfabrik Köppern Gmbh & Co. Kg | high-pressure roller press |
DE102021103573A1 (en) | 2021-02-16 | 2022-08-18 | Maschinenfabrik Köppern GmbH & Co KG | high-pressure roller press |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US870249A (en) * | 1904-01-20 | 1907-11-05 | Thomas C Patterson | Cruller-cutting machine. |
US1185399A (en) * | 1914-03-27 | 1916-05-30 | Samuel Hayes | Machine for molding from cement and other plastic materials. |
US1289275A (en) * | 1914-01-06 | 1918-12-31 | Roessler & Hasslacher Chemical | Apparatus for molding. |
US1361970A (en) * | 1919-02-15 | 1920-12-14 | Westinghouse Electric & Mfg Co | Composite-plate-curing machine |
US2341732A (en) * | 1941-04-04 | 1944-02-15 | Gen Motors Corp | Method and apparatus for briquetting of powdered metal |
US2349829A (en) * | 1942-08-15 | 1944-05-30 | Du Pont | Apparatus |
US2397608A (en) * | 1942-02-19 | 1946-04-02 | Corydon M Johnson | Former for sheet metal parts |
US2811750A (en) * | 1954-11-05 | 1957-11-05 | Raybestos Manhattan Inc | Production of friction material |
US2817875A (en) * | 1954-01-18 | 1957-12-31 | Gen Motors Corp | Mold for molding rubber foam latex strips and the like |
-
1956
- 1956-04-30 US US581446A patent/US2904829A/en not_active Expired - Lifetime
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US870249A (en) * | 1904-01-20 | 1907-11-05 | Thomas C Patterson | Cruller-cutting machine. |
US1289275A (en) * | 1914-01-06 | 1918-12-31 | Roessler & Hasslacher Chemical | Apparatus for molding. |
US1185399A (en) * | 1914-03-27 | 1916-05-30 | Samuel Hayes | Machine for molding from cement and other plastic materials. |
US1361970A (en) * | 1919-02-15 | 1920-12-14 | Westinghouse Electric & Mfg Co | Composite-plate-curing machine |
US2341732A (en) * | 1941-04-04 | 1944-02-15 | Gen Motors Corp | Method and apparatus for briquetting of powdered metal |
US2397608A (en) * | 1942-02-19 | 1946-04-02 | Corydon M Johnson | Former for sheet metal parts |
US2349829A (en) * | 1942-08-15 | 1944-05-30 | Du Pont | Apparatus |
US2817875A (en) * | 1954-01-18 | 1957-12-31 | Gen Motors Corp | Mold for molding rubber foam latex strips and the like |
US2811750A (en) * | 1954-11-05 | 1957-11-05 | Raybestos Manhattan Inc | Production of friction material |
Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3124838A (en) * | 1964-03-17 | Metal coated particles | ||
US3017666A (en) * | 1958-03-29 | 1962-01-23 | Stamicarbon | Apparatus for producing a smooth-surfaced body consisting of a granular material |
US3162708A (en) * | 1961-06-21 | 1964-12-22 | Sherritt Gordon Mines Ltd | Method for compacting metal powder |
US3203045A (en) * | 1962-03-22 | 1965-08-31 | Mannesmann Ag | Rolling mills for metal powder rolling |
US3250104A (en) * | 1962-11-13 | 1966-05-10 | Battelle Development Corp | High-temperature rolling mill |
US3309735A (en) * | 1963-05-03 | 1967-03-21 | Schloemann Ag | Methods and means for rolling metal powder |
US3298060A (en) * | 1963-06-07 | 1967-01-17 | Martin H Michalak | Methods and apparatus for compacting powdered metal to form strips |
US3746071A (en) * | 1965-04-01 | 1973-07-17 | Iit Res Inst | Method for treating materials |
US3892832A (en) * | 1965-04-01 | 1975-07-01 | John A Schey | Method of compressing and rolling powder |
US3433047A (en) * | 1967-01-26 | 1969-03-18 | Reynolds Metals Co | Metal rolling system |
US3517537A (en) * | 1967-09-15 | 1970-06-30 | Southwire Co | Method of hot-forming continuously cast aluminum |
US3565159A (en) * | 1968-07-31 | 1971-02-23 | Ural Z Tyazhelogo Mash Im S Or | Device for continuous production of sheet metal |
US3589308A (en) * | 1969-06-16 | 1971-06-29 | Lehara Inc Werner | Patty making machine |
US3689209A (en) * | 1970-07-27 | 1972-09-05 | Gleb Andreevich Vinogradov | Apparatus for manufacturing rolled products from powdery materials |
US3648624A (en) * | 1970-08-07 | 1972-03-14 | Lehara Inc Werner | Patty making machine |
US4144009A (en) * | 1976-07-16 | 1979-03-13 | British Steel Corporation | Apparatus for production of metal strip |
US4167377A (en) * | 1977-07-29 | 1979-09-11 | The International Nickel Company, Inc. | Powder rolling apparatus |
US4231729A (en) * | 1979-10-09 | 1980-11-04 | Huntington Alloys Inc. | Powder rolling apparatus |
US4820466A (en) * | 1985-01-31 | 1989-04-11 | Zachariades Anagnostis E | Process for obtaining ultra-high modulus products |
EP3590696A1 (en) * | 2018-07-02 | 2020-01-08 | Saalasti Oy | A roll press arrangement, press roll apparatus and a method for dewatering fibrous granular feedstock |
WO2020007801A1 (en) * | 2018-07-02 | 2020-01-09 | Saalasti Oy | A roll press arrangement, press roll apparatus and a method for dewatering fibrous granular feedstock |
US11534997B2 (en) | 2018-07-02 | 2022-12-27 | Saalasti Finland Oy | Roll press arrangement, press roll apparatus and a method for dewatering fibrous granular feedstock |
DE102020104526A1 (en) | 2020-02-20 | 2021-08-26 | Maschinenfabrik Köppern Gmbh & Co. Kg | High pressure roller press |
WO2021164919A1 (en) | 2020-02-20 | 2021-08-26 | Maschinenfabrik Köppern Gmbh & Co. Kg | High-pressure roller press |
DE102020104526B4 (en) | 2020-02-20 | 2024-03-28 | Maschinenfabrik Köppern Gmbh & Co. Kg | High pressure roller press |
DE102021103573A1 (en) | 2021-02-16 | 2022-08-18 | Maschinenfabrik Köppern GmbH & Co KG | high-pressure roller press |
WO2022174957A1 (en) | 2021-02-16 | 2022-08-25 | Maschinenfabrik Köppern Gmbh & Co. Kg | High-pressure roller press |
DE202021103408U1 (en) | 2021-06-25 | 2022-04-04 | Maschinenfabrik Köppern Gmbh & Co. Kg | high-pressure roller press |
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