US3678226A - Hollow conductor roll - Google Patents
Hollow conductor roll Download PDFInfo
- Publication number
- US3678226A US3678226A US767419A US3678226DA US3678226A US 3678226 A US3678226 A US 3678226A US 767419 A US767419 A US 767419A US 3678226D A US3678226D A US 3678226DA US 3678226 A US3678226 A US 3678226A
- Authority
- US
- United States
- Prior art keywords
- roll
- hollow
- conductor
- shaft member
- roll body
- 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
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/06—Wires; Strips; Foils
- C25D7/0614—Strips or foils
- C25D7/0657—Conducting rolls
Definitions
- HOLLOW CONDUCTOR ROLL [72] Inventors: Hlroyuld l-htagl; Kenlchl Kanamaru; Yauo Funuaki, all of Fukuyama shi,
- COOLING l4 LIQUID nouow CONDUCTOR ROLL This invention relates to a conductor roll to be employed. for example, in electrical zinc plating, and rrrore particularly to a conductor roll for conducting an extremely high current at a comparatively low voltage.
- a conductor roll When a metal strip is continuously n'nc plated electrically, a conductor roll is brought into contact with the metal strip.
- the roll is driven by a suitable driving device to be rotated at an equivalent peripheral speed as the speed of the metal strip moving through the system, and conducts the plating current through the metal strip to an oumide circuit.
- a plating current of about 16,000 amperes, at about 18 volts is passed through this conductor roll.
- such conductor rolls have been solid structures made of pure nickel or copper.
- a solid roll made of pure metals such as nickel or copper for obtaining high electrical conductivity has a comparatively low hardness, which renders the roll highly susceptible to mechanical damage. Due to the high cost of materials and labor, these prior art conductor rolls are uneconomical.
- the main object of the present invention is to provide a conductor roll which is mechanically strong, has a good electrical conductivity, and is economical to manufacture.
- a hollow roll shaft member is provided on each side of the conductor roll and is made of a metal having a high electrical conductivity.
- a roll sleeve member is provided on each side of the conductor roll and is tightly fit on the outside surface of at least a portion of the roll shaft.
- a hollow roll body is connected to the roll sleeve at each end thereof by means of coupling members which connect the inner surface of the roll body to the roll sleeves.
- the hollow roll body has a hard metal layer on the outside surface thereof and a lining made from a metal having a high electrical conductivity on at least a portion of due inside surface thereof. Further provided is a connecting member interconnecting the high conductivity metal lining to the roll shafts.
- a roll shalt l of hollow construction is made of 99.9 percent pure copper and a roll sleeve 2 made of general structural steel is tightly fit on the outer surface of the roll shaft 1.
- Coupling members 3, 3' connect the roll sleeve 2 to a roll body 4 of hollow construction to join together all of the members I through 4 to form an integrated conductor roll.
- the roll body 4 is made of a medium carbon steel for machine structure, and the coupling members 3, 3 are made of an ordinary structural rolled steel. All of the junctions between the coupling members 3, 3' and the roll body 4 and between the coupling members 3, 3' and the roll sleeve 2 are welded together.
- the peripheral surface of the roll body 4 is electrically plated with a hard chromium layer 5, and the inside surface of the roll body 4 is provided with a lining 6 consisting of about 5 mm thickness of 99.9 percent pure copper.
- This copper lining 6 is brazed to the inner end of the copper roll shaft 1 by means of an intennediate connecting number '7.
- a source of cooling liquid 14 is connected to hollow roll shaft 1 for passing a cooling liquid therethrough.
- Complementary apparatus (not shown) is provided at the other end (not shown) of the conductor roll assembly. This cooling apparatus is of a well known type and is not described herein in more detail. lts operation should be apparent to those ordinarily skilled in the art.
- FIG. 1 illustrates merely the left side halfof (notshown) hmasirnilarconstructionasthelefisidehalf.
- a conductor ring 8 and brushes 9 contactingtheconductor roll on theouter endofthe copper roll shaft for conducting the current passing through the strip being plated to leads 10.
- a portion ll of sleeve 2 is joumalled on a bearing(notshown) inamannerwell knownintheartand l2 and 13 designate hollow spaces inside the roll shaft 1 and the roll body 4, respectively.
- the electric current flowing through the metal strip (not show) to be plated is at first through the hard chromium plated layer 5 on the hollow roll main body 4, then through the roll main body 4, and thereafter through the inner conductive lining layer 6.
- the current then through connecting member 7, roll shaft 1, conductor ring 8, brushes 9, and a group of conductor leads l0, toabm-bar (not shown).
- the conductor roll according to the present invention is so constructed that the outside peripheral portions which contact the strip to be plated and which are subject to mechanical damage, are made of medium class carbon steel having a hard outer chromium plated layer 5 thereon.
- the irside portion of the roll is provided with a lining 6 of a lower hardness pure metal having a good electrical conductivity.
- a conductor roll of superior quality results which has a higher resistance to outside physical damage than the conventional solid conductor rolls made of pure metal, and an equivalent electrical conductivity to the conventional rolls.
- the rolls according to this invention are economical to manufacture, requiring only about one-fourth of the cost of the conventional rolls because of the hollow roll shaft 1 and the roll body 4 which is made of relatively inexpensive steel.
- a fluid cooled conductor roll comprising:
- a hollow roll body (4) having a hard metal layer (5) on the outside surface thereof and a lining (6) made from a metal having a high electrical conductivity bonded on at least a portion of the inner surface thereof;
- a hollow roll shaft member (1) made of a metal having a high electrical conductivity, at least a portion of said roll shaft member (1) extending into the hollow portion of said hollow roll body (4);
- a connecting member (7) interconnecting said high conductivity metal lining (6) to said roll shaft member (1) only adjacent an end of said hollow roll body (4) so that said hollow roll body (4) has no radial obstructions in the central portions thereof, thereby providing an improved coolant flow path therethrough.
- a conductor roll according to claim 1 further comprising a ring and brush assembly (8,9) mounted on an end ofsaid roll shaft member (1) to conduct electric current from said conductor roll.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
A hollow conductor roll is used in electrical zinc plating, the outer surface of which is made of middle carbon steel and hard metal plating, and the inner surface of which is made of pure metal with low hardness and good electric conductivity. The hard outer metal plating renders the roll less susceptible to damage thereby reducing production cost and the hollow roll is relatively easy to cool by passing cooling liquid therethrough.
Description
United States Patent Hatagi et a].
[4s] July 18, 1972 154] HOLLOW CONDUCTOR ROLL [72] Inventors: Hlroyuld l-htagl; Kenlchl Kanamaru; Yauo Funuaki, all of Fukuyama shi,
Japan [73] Assignee: Nippon Kolum Kabushlki Kahlua, Tokyo,
Japan [22] Filed: Oct. 14, 1968 [21] Appl.No.: 767,419
521 U.S.Cl. ..l9lIlA,204/279 [51] met. ..n01k3/o0 5s FleldolSearch.............................l9l/lA;204/279, 25
[5 6] References Cited UNITED STATES PATENTS 2,687,699 8/1954 Oakes ..165/89 UX COOLING LIQUID 2,266,347 12/1941 Watson ..l91/l A 2,526,312 10/1950 Winterhalter. ....l91/l A 2,958,742 11/1960 Palmer ..l9l/1 A Primary Bummer-Arthur L. La Point Assistant Examiner-George H. Libman Attorney-Robert D. Flynn [57] ABSTRACT A hollow conductor roll is used in electrical zinc plating, the outer surface of which is made of middle carbon steel and hard metal plating, and the inner surface of which is made of pure metal with low hardness and good electric conductivity. The hard outer metal plating renders the roll less susceptible to damage thereby reducing production cost and the hollow roll is relatively easy to cool by passing cooling liquid therethrough.
10 Claims, 1 Drawlngfigure PATENTEDJUUMTZ 3.678.226
COOLING l4 LIQUID nouow CONDUCTOR ROLL This invention relates to a conductor roll to be employed. for example, in electrical zinc plating, and rrrore particularly to a conductor roll for conducting an extremely high current at a comparatively low voltage.
When a metal strip is continuously n'nc plated electrically, a conductor roll is brought into contact with the metal strip. The roll is driven by a suitable driving device to be rotated at an equivalent peripheral speed as the speed of the metal strip moving through the system, and conducts the plating current through the metal strip to an oumide circuit. A plating current of about 16,000 amperes, at about 18 volts is passed through this conductor roll.
Heretot'ore, such conductor rolls have been solid structures made of pure nickel or copper. However, such a solid roll made of pure metals such as nickel or copper for obtaining high electrical conductivity, has a comparatively low hardness, which renders the roll highly susceptible to mechanical damage. Due to the high cost of materials and labor, these prior art conductor rolls are uneconomical.
Furthermore, it is difficult to cool these solid conductor rolls when a large quantity of heat is created therein. These and other disadvantages have constituted almost unavoidable drawbacks of the conventional conductor rolls.
Therefore, the main object of the present invention is to provide a conductor roll which is mechanically strong, has a good electrical conductivity, and is economical to manufacture.
it is a further object of this invention to provide a conductor roll which is relatively easy to cool.
According to this invention, a hollow roll shaft member is provided on each side of the conductor roll and is made of a metal having a high electrical conductivity. A roll sleeve member is provided on each side of the conductor roll and is tightly fit on the outside surface of at least a portion of the roll shaft. A hollow roll body is connected to the roll sleeve at each end thereof by means of coupling members which connect the inner surface of the roll body to the roll sleeves. The hollow roll body has a hard metal layer on the outside surface thereof and a lining made from a metal having a high electrical conductivity on at least a portion of due inside surface thereof. Further provided is a connecting member interconnecting the high conductivity metal lining to the roll shafts.
The invention will be better understood from the following detailed description taken in conjunction with the accomanying drawing which illustrates a sectional view of a preferred embodiment thereof.
In the drawing, a roll shalt l of hollow construction is made of 99.9 percent pure copper and a roll sleeve 2 made of general structural steel is tightly fit on the outer surface of the roll shaft 1. Coupling members 3, 3' connect the roll sleeve 2 to a roll body 4 of hollow construction to join together all of the members I through 4 to form an integrated conductor roll. The roll body 4 is made of a medium carbon steel for machine structure, and the coupling members 3, 3 are made of an ordinary structural rolled steel. All of the junctions between the coupling members 3, 3' and the roll body 4 and between the coupling members 3, 3' and the roll sleeve 2 are welded together. The peripheral surface of the roll body 4 is electrically plated with a hard chromium layer 5, and the inside surface of the roll body 4 is provided with a lining 6 consisting of about 5 mm thickness of 99.9 percent pure copper. This copper lining 6 is brazed to the inner end of the copper roll shaft 1 by means of an intennediate connecting number '7.
A source of cooling liquid 14 is connected to hollow roll shaft 1 for passing a cooling liquid therethrough. Complementary apparatus (not shown) is provided at the other end (not shown) of the conductor roll assembly. This cooling apparatus is of a well known type and is not described herein in more detail. lts operation should be apparent to those ordinarily skilled in the art.
Although the drawing illustrates merely the left side halfof (notshown) hmasirnilarconstructionasthelefisidehalf. Further provided is a conductor ring 8 and brushes 9 contactingtheconductor roll on theouter endofthe copper roll shaft for conducting the current passing through the strip being plated to leads 10. A portion ll of sleeve 2 is joumalled on a bearing(notshown) inamannerwell knownintheartand l2 and 13 designate hollow spaces inside the roll shaft 1 and the roll body 4, respectively.
When the conductor roll according to the present invention is used in an electrical plating system, the electric current flowing through the metal strip (not show) to be plated is at first through the hard chromium plated layer 5 on the hollow roll main body 4, then through the roll main body 4, and thereafter through the inner conductive lining layer 6. The current then through connecting member 7, roll shaft 1, conductor ring 8, brushes 9, and a group of conductor leads l0, toabm-bar (not shown).
As described above, the conductor roll according to the present invention is so constructed that the outside peripheral portions which contact the strip to be plated and which are subject to mechanical damage, are made of medium class carbon steel having a hard outer chromium plated layer 5 thereon. The irside portion of the roll is provided with a lining 6 of a lower hardness pure metal having a good electrical conductivity. Thus, a conductor roll of superior quality results which has a higher resistance to outside physical damage than the conventional solid conductor rolls made of pure metal, and an equivalent electrical conductivity to the conventional rolls. The rolls according to this invention are economical to manufacture, requiring only about one-fourth of the cost of the conventional rolls because of the hollow roll shaft 1 and the roll body 4 which is made of relatively inexpensive steel.
Further, since it is easy to flow a cooling liquid such as water through the hollow spaces l2, 13 within the roll shaft and the roll body, respectively, heat created in the conductive roll may be removed in a simple and inexpensive manner.
What is claimed is:
1. A fluid cooled conductor roll comprising:
a hollow roll body (4) having a hard metal layer (5) on the outside surface thereof and a lining (6) made from a metal having a high electrical conductivity bonded on at least a portion of the inner surface thereof;
a hollow roll shaft member (1) made of a metal having a high electrical conductivity, at least a portion of said roll shaft member (1) extending into the hollow portion of said hollow roll body (4);
a roll sleeve member (2) tightly fit on the outside surface of at leastaportionofsaidrollshafi (1);
coupling members (3, 3') connecting an end of the inner surface of said roll body (4) to said roll sleeve member (2), said coupling members (3, 3') being spaced from each other and being welded to said roll body (4) and to said roll sleeve member (2); and
a connecting member (7) interconnecting said high conductivity metal lining (6) to said roll shaft member (1) only adjacent an end of said hollow roll body (4) so that said hollow roll body (4) has no radial obstructions in the central portions thereof, thereby providing an improved coolant flow path therethrough.
2. A conductor roll according to claim 1 wherein said hollow roll shaft member (1) extends only partially into the hollow portion of said hollow roll body (4) so that said hollow roll body (4) has no obstructions in the central portions thereof.
3. A conductor roll according to claim 2 wherein said hollow roll shaft member (1) extends into the hollow portion of said hollow roll body (4) only to said connecting member (7).
4. A conductor roll according to claim 1 wherein said hard metal layer (5) is an electrically plated hard metal layer.
5. A conductor roll according to claim 1 wherein said hard metal layer 5) is a chromium layer.
6. A conductor roll according to claim 1 wherein said lining (6) is a layer of substantially pure copper.
7. A conductor roll according to claim 1 wherein said lining the conductor roll, the right side half of the conductor roll (6) isbrazedtothe inner surface of said hollow roll body(4).
8. A conductor roll according to claim 1 further comprising a ring and brush assembly (8,9) mounted on an end ofsaid roll shaft member (1) to conduct electric current from said conductor roll.
9. A conductor roll according to claim 1 wherein said hollow portions ofsaid roll shah member (I) and ofsaid roll body i I i l
Claims (10)
1. A fluid cooled conductor roll comprising: a hollow roll body (4) having a hard metal layer (5) on the outside surface thereof and a lining (6) made from a metal having a high electrical conductivity bonded on at least a portion of the inner surface thereof; a hollow roll shaft member (1) made of a metal having a high electrical conductivity, at least a portion of said roll shaft member (1) extending into the hollow portion of said hollow roll body (4); a roll sleeve member (2) tightly fit on the outside surface of at least a portion of said roll shaft (1); couplinG members (3, 3'') connecting an end of the inner surface of said roll body (4) to said roll sleeve member (2), said coupling members (3, 3'') being spaced from each other and being welded to said roll body (4) and to said roll sleeve member (2); and a connecting member (7) interconnecting said high conductivity metal lining (6) to said roll shaft member (1) only adjacent an end of said hollow roll body (4) so that said hollow roll body (4) has no radial obstructions in the central portions thereof, thereby providing an improved coolant flow path therethrough.
2. A conductor roll according to claim 1 wherein said hollow roll shaft member (1) extends only partially into the hollow portion of said hollow roll body (4) so that said hollow roll body (4) has no obstructions in the central portions thereof.
3. A conductor roll according to claim 2 wherein said hollow roll shaft member (1) extends into the hollow portion of said hollow roll body (4) only to said connecting member (7).
4. A conductor roll according to claim 1 wherein said hard metal layer (5) is an electrically plated hard metal layer.
5. A conductor roll according to claim 1 wherein said hard metal layer (5) is a chromium layer.
6. A conductor roll according to claim 1 wherein said lining (6) is a layer of substantially pure copper.
7. A conductor roll according to claim 1 wherein said lining (6) is brazed to the inner surface of said hollow roll body (4).
8. A conductor roll according to claim 1 further comprising a ring and brush assembly (8,9) mounted on an end of said roll shaft member (1) to conduct electric current from said conductor roll.
9. A conductor roll according to claim 1 wherein said hollow portions of said roll shaft member (1) and of said roll body (4) are in communication.
10. A conductor roll according to claim 9 further comprising cooling means (14) coupled to said hollow roll shaft member (1) for passing a cooling liquid through said shaft member (1) and through said hollow roll body (4).
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US76741968A | 1968-10-14 | 1968-10-14 | |
| GB49402/68A GB1208350A (en) | 1968-10-14 | 1968-10-18 | Hollow conductor roll for electrolytic plating apparatus |
| DE19681803877 DE1803877C3 (en) | 1968-10-18 | Power feed roller | |
| FR171372 | 1968-10-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3678226A true US3678226A (en) | 1972-07-18 |
Family
ID=27430790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US767419A Expired - Lifetime US3678226A (en) | 1968-10-14 | 1968-10-14 | Hollow conductor roll |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3678226A (en) |
| FR (1) | FR1589971A (en) |
| GB (1) | GB1208350A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3860099A (en) * | 1973-05-18 | 1975-01-14 | Bethlehem Steel Corp | Composite contactor roll for electroplating |
| US3887776A (en) * | 1973-07-27 | 1975-06-03 | Yamato Kogyo Kk | Conductor roll |
| US4284179A (en) * | 1979-05-08 | 1981-08-18 | Maschinen- Und Werkzeugbau Gmbh | Roller electrode and process for making same |
| US4662997A (en) * | 1986-04-25 | 1987-05-05 | Hirt Theodore A | Method and apparatus for energizing metallic strip for plating |
| US5939677A (en) * | 1997-09-11 | 1999-08-17 | Ko; Chien-Hsin | Roller electrode for use in a continuous electroplating process |
| US20060162414A1 (en) * | 2002-04-16 | 2006-07-27 | Bartlett Michael Charles R | Arrangement for cooling a roll |
| US20060243593A1 (en) * | 2005-04-29 | 2006-11-02 | Bowman Kenneth A | Apparatus and method for improving contact between a web and a roll |
| EP3505657A1 (en) * | 2017-12-29 | 2019-07-03 | Polimiroir | Current conductor rollers |
| CN115261956A (en) * | 2022-07-21 | 2022-11-01 | 江苏东方九天新能源材料有限公司 | Manufacturing method of conductive roller capable of preventing bearing retainer from being worn |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2266347A (en) * | 1938-06-25 | 1941-12-16 | Charles G Watson | Electroplating contact roll |
| US2526312A (en) * | 1946-03-07 | 1950-10-17 | Carnegie Illinois Steel Corp | Contact roll for electroplating |
| US2687699A (en) * | 1946-04-24 | 1954-08-31 | Et Oakes Corp | Dough sheeting device |
| US2958742A (en) * | 1956-03-08 | 1960-11-01 | United States Steel Corp | Conductor roll and method of making the same |
-
1968
- 1968-10-14 US US767419A patent/US3678226A/en not_active Expired - Lifetime
- 1968-10-18 GB GB49402/68A patent/GB1208350A/en not_active Expired
- 1968-10-25 FR FR171372A patent/FR1589971A/fr not_active Expired
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2266347A (en) * | 1938-06-25 | 1941-12-16 | Charles G Watson | Electroplating contact roll |
| US2526312A (en) * | 1946-03-07 | 1950-10-17 | Carnegie Illinois Steel Corp | Contact roll for electroplating |
| US2687699A (en) * | 1946-04-24 | 1954-08-31 | Et Oakes Corp | Dough sheeting device |
| US2958742A (en) * | 1956-03-08 | 1960-11-01 | United States Steel Corp | Conductor roll and method of making the same |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3860099A (en) * | 1973-05-18 | 1975-01-14 | Bethlehem Steel Corp | Composite contactor roll for electroplating |
| US3887776A (en) * | 1973-07-27 | 1975-06-03 | Yamato Kogyo Kk | Conductor roll |
| US4284179A (en) * | 1979-05-08 | 1981-08-18 | Maschinen- Und Werkzeugbau Gmbh | Roller electrode and process for making same |
| US4662997A (en) * | 1986-04-25 | 1987-05-05 | Hirt Theodore A | Method and apparatus for energizing metallic strip for plating |
| US5939677A (en) * | 1997-09-11 | 1999-08-17 | Ko; Chien-Hsin | Roller electrode for use in a continuous electroplating process |
| US20060162414A1 (en) * | 2002-04-16 | 2006-07-27 | Bartlett Michael Charles R | Arrangement for cooling a roll |
| US7874192B2 (en) * | 2002-04-16 | 2011-01-25 | Bartlett Engineering (South Wales) Limited | Arrangement for cooling a roll |
| US20060243593A1 (en) * | 2005-04-29 | 2006-11-02 | Bowman Kenneth A | Apparatus and method for improving contact between a web and a roll |
| EP3505657A1 (en) * | 2017-12-29 | 2019-07-03 | Polimiroir | Current conductor rollers |
| FR3076299A1 (en) * | 2017-12-29 | 2019-07-05 | Polimiroir | CURRENT CONDUCTOR ROLLERS |
| CN115261956A (en) * | 2022-07-21 | 2022-11-01 | 江苏东方九天新能源材料有限公司 | Manufacturing method of conductive roller capable of preventing bearing retainer from being worn |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1803877A1 (en) | 1970-05-27 |
| DE1803877B2 (en) | 1971-09-02 |
| FR1589971A (en) | 1970-04-06 |
| GB1208350A (en) | 1970-10-14 |
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