US3847763A - Method of reducing wear of a cemented carbide roll - Google Patents

Method of reducing wear of a cemented carbide roll Download PDF

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Publication number
US3847763A
US3847763A US00325999A US32599973A US3847763A US 3847763 A US3847763 A US 3847763A US 00325999 A US00325999 A US 00325999A US 32599973 A US32599973 A US 32599973A US 3847763 A US3847763 A US 3847763A
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US
United States
Prior art keywords
roll
anode
wear
cemented carbide
rolls
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
US00325999A
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English (en)
Inventor
K Ekemar
B Lind
T Svensson
K Fundell
U Fischer
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.)
Santrade Ltd
Original Assignee
Sandvik AB
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 Sandvik AB filed Critical Sandvik AB
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Publication of US3847763A publication Critical patent/US3847763A/en
Assigned to SANTRADE LTD., A CORP. OF SWITZERLAND reassignment SANTRADE LTD., A CORP. OF SWITZERLAND ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: SANDVIK AKTIEBOLAG, A CORP. OF SWEDEN
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
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B28/00—Maintaining rolls or rolling equipment in effective condition
    • B21B28/02—Maintaining rolls in effective condition, e.g. reconditioning
    • B21B28/04—Maintaining rolls in effective condition, e.g. reconditioning while in use, e.g. polishing or grinding while the rolls are in their stands
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions

Definitions

  • Rolls of hard metal have been used for cold rolling metal strips and the like for a long time. Furthermore, hard metal rolls lately have been used in hot rolling to a greatly increasing extent and preferably in rolling of wire at very high rolling speeds. For natural reasons, such rolls are exposed to great mechanical strain and to other destructive influences including wear, corrosion and thermal fatigue.
  • Cathodic-protection of metals against corrosion has, in general, long been used. There may be mentioned ship bodies, oil tanks of tankers and hot water tanks. It is also known to protect parts of rolling mills as for instance roll necks and slide bearings by means of cathodic protection and in'the same way also rolls, drying cylinders and other parts of paper making machines. In the mentioned cases the protected body has usually been made of steel. It is also known, however, to cathodically protect articles formed of sintered carbide of general composition. Here may be mentioned for example cutting of timber, in which process the saw blade has been provided with teeth of cemented carbide.
  • the protective current may, according to principles known per se, be produced by galvanic anodes or by an applied potential.
  • cathodic protection is obtained by connecting the hard metal roll to a piece of a baser metal.
  • the galvanic anode or sacrificial anode shall in the present method be made of a material having at least 250 mv lower electrochemical potential in relation to the sintered carbide measured-in actual electrolyte and at actual temperature.
  • a material is in the first instance aluminum or an aluminum alloy, but also Mg and Zn and their alloys have proved to be suitable. in the method according to the invention it has been found favorable to apply the sacrificial anode firmly to the very sintered carbide roll.
  • FIG. 1 is a diagrammatic representation, partly in cross-section, of a portion of a rolling mill roll embodying principles of the present invention
  • an extra groove 4 betweenthe roll grooves 5 be filled with anode material (see FIG. 2).
  • anode rings By using anode rings the benefit of a compact, prefabricated roll is obtained, which roll can be directly put into the rolling mill for replacing a conventional roll. The strength of the roll is not risked when using peripherally placed rings which obtain the same diameter as the rest of the roll in the normal regrinding of the roll.
  • exchangeable anodes may be used, i.e., material which suitably is renewed when the roll has to be reground because of wear.
  • anodes may be mentioned strip, wire and equivalent, which are applied to the roll by means of winding, cementing, welding, mechanical clamping or other ways. Coated layers'of anode material applied by spraying, plating, pasting, etc., upon the surfaces of the roll may also belong to the group.
  • Such anode materials in the form of powder, etc. may be mixed with adhering material such as resin or tape as binder for such powder.
  • Method of reducing the wear in a roll of cemented carbide during hot rolling of metal at very high speed and severe strain which consists in providing the roll with electrochemical cathodic protection by using the available cooling water as electrolyte and, as anode, at least one ring formed of a metallic material having a significantly lower electrochemical potential than that of the cemented carbide, said ring being applied on the periphery of the roll and so formed that its outer diameter is the same as the diameter of the roll.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Prevention Of Electric Corrosion (AREA)
US00325999A 1972-01-31 1973-01-23 Method of reducing wear of a cemented carbide roll Expired - Lifetime US3847763A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE01045/72A SE355604B (cs) 1972-01-31 1972-01-31

Publications (1)

Publication Number Publication Date
US3847763A true US3847763A (en) 1974-11-12

Family

ID=20257512

Family Applications (1)

Application Number Title Priority Date Filing Date
US00325999A Expired - Lifetime US3847763A (en) 1972-01-31 1973-01-23 Method of reducing wear of a cemented carbide roll

Country Status (3)

Country Link
US (1) US3847763A (cs)
FR (1) FR2169975B3 (cs)
SE (1) SE355604B (cs)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974555A (en) * 1974-05-20 1976-08-17 Schwarzkopf Development Corporation Rolls for rolling mills and method for making same
US4018648A (en) * 1976-03-25 1977-04-19 Westvaco Corporation Galvanic protection of a couch roll
FR2376224A1 (fr) * 1976-12-31 1978-07-28 Exxon Research Engineering Co Procede de protection cathodique contre la corrosion par un polymere halogene
US4866968A (en) * 1987-06-17 1989-09-19 Westinghouse Electric Corp. High strength cemented carbide dies and mandrels for a pilgering machine
US4876875A (en) * 1987-12-04 1989-10-31 Coors Porcelain Company Supported ceramic guide roller
US5058329A (en) * 1990-01-08 1991-10-22 Milliken Research Corporation Machine and method to enhance fabric
DE4332922A1 (de) * 1993-09-28 1995-03-30 Kloeckner Humboldt Deutz Ag Zweiwalzenmaschine und Verfahren zur Druckzerkleinerung körnigen feuchten Gutes

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1494331A (en) * 1922-07-21 1924-05-20 Baehr George Expansible composite roll
US2151048A (en) * 1937-05-01 1939-03-21 Aluminum Co Of America Drying roll
US2758081A (en) * 1954-02-15 1956-08-07 Us Rubber Co Valve stem
US3108055A (en) * 1959-09-30 1963-10-22 Cameron B Grant Pelletizing mill
US3577619A (en) * 1969-05-12 1971-05-04 Sandvikens Jernverks Ab Method of manufacturing composite hardmetal rolls
US3609849A (en) * 1969-04-09 1971-10-05 Jan M Krol Forming rolls

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1494331A (en) * 1922-07-21 1924-05-20 Baehr George Expansible composite roll
US2151048A (en) * 1937-05-01 1939-03-21 Aluminum Co Of America Drying roll
US2758081A (en) * 1954-02-15 1956-08-07 Us Rubber Co Valve stem
US3108055A (en) * 1959-09-30 1963-10-22 Cameron B Grant Pelletizing mill
US3609849A (en) * 1969-04-09 1971-10-05 Jan M Krol Forming rolls
US3577619A (en) * 1969-05-12 1971-05-04 Sandvikens Jernverks Ab Method of manufacturing composite hardmetal rolls

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974555A (en) * 1974-05-20 1976-08-17 Schwarzkopf Development Corporation Rolls for rolling mills and method for making same
US4018648A (en) * 1976-03-25 1977-04-19 Westvaco Corporation Galvanic protection of a couch roll
FR2376224A1 (fr) * 1976-12-31 1978-07-28 Exxon Research Engineering Co Procede de protection cathodique contre la corrosion par un polymere halogene
US4866968A (en) * 1987-06-17 1989-09-19 Westinghouse Electric Corp. High strength cemented carbide dies and mandrels for a pilgering machine
US4876875A (en) * 1987-12-04 1989-10-31 Coors Porcelain Company Supported ceramic guide roller
US5058329A (en) * 1990-01-08 1991-10-22 Milliken Research Corporation Machine and method to enhance fabric
DE4332922A1 (de) * 1993-09-28 1995-03-30 Kloeckner Humboldt Deutz Ag Zweiwalzenmaschine und Verfahren zur Druckzerkleinerung körnigen feuchten Gutes

Also Published As

Publication number Publication date
FR2169975B3 (cs) 1976-01-30
FR2169975A1 (cs) 1973-09-14
SE355604B (cs) 1973-04-30

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Legal Events

Date Code Title Description
AS Assignment

Owner name: SANTRADE LTD., ALPENQUAI 12, CH-6002, LUCERNE, SWI

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SANDVIK AKTIEBOLAG, A CORP. OF SWEDEN;REEL/FRAME:004085/0132

Effective date: 19820908