FR2378578B1 - - Google Patents

Info

Publication number
FR2378578B1
FR2378578B1 FR7800421A FR7800421A FR2378578B1 FR 2378578 B1 FR2378578 B1 FR 2378578B1 FR 7800421 A FR7800421 A FR 7800421A FR 7800421 A FR7800421 A FR 7800421A FR 2378578 B1 FR2378578 B1 FR 2378578B1
Authority
FR
France
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
Application number
FR7800421A
Other languages
French (fr)
Other versions
FR2378578A1 (fr
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.)
Arcelor Luxembourg SA
Original Assignee
Arbed SA
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 Arbed SA filed Critical Arbed SA
Publication of FR2378578A1 publication Critical patent/FR2378578A1/fr
Application granted granted Critical
Publication of FR2378578B1 publication Critical patent/FR2378578B1/fr
Granted legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
    • E21D23/0034—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face comprising a goaf shield articulated to a base member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B21B1/163—Rolling or cold-forming of concrete reinforcement bars or wire ; Rolls therefor
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
    • C22C29/067—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds comprising a particular metallic binder
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/08—Advancing mechanisms
    • E21D23/081—Advancing mechanisms forming parts of the roof supports
    • E21D23/085—Advancing mechanisms forming parts of the roof supports acting on a conveyor or a guide for the mining machine

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
FR7800421A 1977-01-27 1978-01-09 Piece de laminage en metal dur Granted FR2378578A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2703261A DE2703261B2 (de) 1977-01-27 1977-01-27 Walzenkörper aus Hartmetall

Publications (2)

Publication Number Publication Date
FR2378578A1 FR2378578A1 (fr) 1978-08-25
FR2378578B1 true FR2378578B1 (pt) 1981-07-03

Family

ID=5999647

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7800421A Granted FR2378578A1 (fr) 1977-01-27 1978-01-09 Piece de laminage en metal dur

Country Status (4)

Country Link
DE (1) DE2703261B2 (pt)
FR (1) FR2378578A1 (pt)
IT (1) IT1111158B (pt)
SE (1) SE443807B (pt)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1119850A (en) * 1978-12-04 1982-03-16 William M. Stoll Roll for hot forming steel rod
US4698884A (en) * 1983-03-28 1987-10-13 Kennametal Inc. Roll for hot forming steel rod
IT1282011B1 (it) * 1996-02-07 1998-03-06 Alfa Acciai S R L Procedimento per la produzione di reti in acciaio elettrosaldate ad alta duttilita',particolarmente per l'impiego come armature

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE941869C (de) * 1939-05-27 1956-04-19 Eisen & Stahlind Ag Verwendung von Hartmetallegierungen
DE1019470B (de) * 1953-12-16 1957-11-14 Eisen & Stahlind Ag Verwendung einer Hartmetallegierung
US3512962A (en) * 1966-01-03 1970-05-19 Iit Res Inst Cobalt-tungsten carbide alloy and process
US3647401A (en) * 1969-06-04 1972-03-07 Du Pont Anisodimensional tungsten carbide platelets bonded with cobalt

Also Published As

Publication number Publication date
DE2703261B2 (de) 1978-11-16
IT7819613A0 (it) 1978-01-26
DE2703261A1 (de) 1978-08-03
SE443807B (sv) 1986-03-10
IT1111158B (it) 1986-01-13
SE7800461L (sv) 1978-07-28
FR2378578A1 (fr) 1978-08-25

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Legal Events

Date Code Title Description
ST Notification of lapse