US3647194A - Protective refractory member - Google Patents

Protective refractory member Download PDF

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Publication number
US3647194A
US3647194A US41791A US3647194DA US3647194A US 3647194 A US3647194 A US 3647194A US 41791 A US41791 A US 41791A US 3647194D A US3647194D A US 3647194DA US 3647194 A US3647194 A US 3647194A
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US
United States
Prior art keywords
refractory
elongated
openings
pluglike
opening
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
US41791A
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English (en)
Inventor
Louis E Brungraber
Walter Rudin
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.)
Bloom Engineering Co Inc
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Bloom Engineering Co Inc
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Filing date
Publication date
Application filed by Bloom Engineering Co Inc filed Critical Bloom Engineering Co Inc
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Publication of US3647194A publication Critical patent/US3647194A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/02—Skids or tracks for heavy objects
    • F27D3/022—Skids

Definitions

  • a series of spaced pluglike openings extend through the refractory element so that the reticulated metal structure, which is substantially adjacent the heat absorptive elongated element can be welded thereto to serve as the sole means of support for the refractory member.
  • the Bloom furnace insulation system comprises two refractory sections, each having interconnected reticulated metal mesh embedded therein so that when the two sections are joined about a furnace pipe, they are securely anchored (e.g., by welding) to the pipe at the exposed metal mesh at the juncture of the sections. Thereafter, the juncture is filled in to completely cover the exposed mesh at the welds, thereby completing the installation.
  • the Bloom furnace insulation system has been very successful in protecting skid pipe, as well as the crossover and riser pipes in a furnace. The installation of the Bloom insulation system does necessitate removing all the metal workpieces from the skid pipe, as well as cooling down the furnaces to permit entry.
  • Our invention provides an improvement on the basic Bloom furnace insulation system to permit the protective refractory to be installed without removing the metal workpieces from the skid pipe and without sacrificing the effective life of the installation. This improvement is a considerable time saver, thereby permitting the processes of the furnace to be continued after a minimum downtime.
  • our invention eliminates the extended mortar joints and further eliminates pins or metal mesh extending out of the refractory which served as means of anchoring the refractory members to the furnace pipes in certain embodiments of the Bloom insulation system.
  • the refractory member has an elongated hollow element into which is solidly embedded a reticulated metal structure.
  • the reticulated metal structure generally a high temperature alloy wire mesh, is positioned about the hollow portion to be substantially adjacent the skid pipe.
  • a plurality of pluglike openings extend through the refractory member, thereby permitting this refractory member to be anchored to the skid pipe, such as by welding the wire mesh to the skid pipe through the openings. This anchoring is the sole means of support between the refractory member and the skid pipe.
  • FIG. 1 is an isometric of an insulated skid pipe
  • FIG. 2 is a section through lines II-II of FIG. 1;
  • FIG. 3 is an isometric showing the protective refractory member.
  • a multizone reheat furnace which heats steel slabs to proper temperatures prior to hot rolling, is a typical example of the environment in which our protective refractory members are employed. Another environment is open hearth furnaces, and it will be appreciated that many other similar environments require such insulation systems.
  • a multizone reheat furnace has a network of pipes which are water-cooled and which serve as supports for the slabs being processed through the furnace.
  • the pipe which actually supports the slab is referred to as a skid pipe and because of the normal wear of metal to metal contact, a wear bar is secured to the top of the pipe so that the effective wall thickness of the pipe is not reduced and the wear bar takes the metal loss.
  • crossover pipes and riser pipes are employed in the structural network to facilitate the cooling of all members involved.
  • FIG. 1 A typical section of skid pipe 10 is shown in FIG. 1 having a wear bar 11 welded thereto.
  • the refractory member I2 is the shape of a hollow cylinder having a flat segmented section 13 which terminates just below the top ofthe skid pipe 10 so that there is an open area 14 in the top of the refractory member 12 to accommodate the wear bar 11 which is welded to the top of the skid pipe 10, see FIG. 3.
  • the refractory member 12 has an interconnected wire mesh 15 solidly embedded therein and positioned about the hollow portion 16 of the refractory member 12.
  • This mesh 15 is substantially at the inner surface of the refractory member 12 so that at least portions are immediately adjacent the outer diameter of the skid pipe 10 when positioned in place.
  • the wire mesh can be in many forms of a reticulated metal structure, and the particular form is not critical for purposes of defining the subject invention. For ease of presentation, the wire mesh 15 is shown exposed at the ends of the refractory member 12, but it will be appreciated by those skilled in the art that the wire mesh can be completely covered, excepting the portions to be attached to the skid pipe through the pluglike openings.
  • a plurality of pluglike openings 18 extend through the refractory member 12, thereby exposing those portions of the wire mesh 15 immediately adjacent the skid pipe 10.
  • the refractory member 12 is anchored to the skid pipe 10 by welding the wire mesh 15 to the skid pipe 10 through the pluglike openings 18.
  • the refractory member 12 actually is constructed in two parts which are connected along the bottom surface of the refractory.
  • the loops of the wire mesh of the respective parts are interwoven and a pin or wire is threaded therethrough to form a hingelike connection.
  • the edges of the two respective parts are chamfered to permit swinging movement about the hingelike connection.
  • the refractory member 12 is then fitted about the skid pipe by opening the two parts and placing the refractory member over the pipe.
  • the two parts are then closed about the pipe and the hingelike connection is completely grouted.
  • This form of connection shown as 20 in FIGS. l-3, is known and does not form a part of this invention.
  • a plurality of pluglike openings should be provided. It has been found that a secure anchoring can be achieved by positioning the pluglike openings 18 on either side of the horizontal center line, see FIG. 2, and by offsetting the plugged openings 18 from each other and from a vertical plane, see FIG. 3.
  • refractory member of l-foot lengths and for 4-inch-round skid pipe, require a total of eight pluglike openings to insure good performance.
  • Each of these pluglike openings was positioned three-quarter inch from the horizontal centerline and were staggered so that no two pluglike openings on opposite sides of the horizontal centerline were in the same vertical plane.
  • the pluglike openings 18 are filled in by a refractory mix to completely cover the exposed wire mesh 15 and complete the installation.
  • the refractory member 12 has been shown cylindrical since most standard skid pipes are of that shape. However, the refractory can be cast to any desired shape, for example, oval shaped when an oval skid pipe is employed. In addition, where metal supports are being protected, the refractory can be in the form of a square rectangle, etc.
  • a protective refractory member for protecting heat absorptive elongated elements in a furnace and having two connected integral parts forming a refractory elongated hollow element and an interconnected reticulated metal structure solidly embedded within said hollow element and positioned about and adjacent the'hollow portion so as to be substantially adjacent said heat absorptive elongated element, the improvement comprising a plurality of spaced pluglike openings extending through the refractory element and positioned about said refractory element to permit anchoring of the metal structure to the absorptive elongated element through said openings as the sole anchoring means for the refractory member, each pluglike opening lying wholly within a single integral part of the hollow element.
  • a refractory member for protecting a skid pipe having a wear bar mounted thereto comprising an elongated refractory element constructed of two connected integral parts and having a first opening therethrough and a segmented upper surface defining a second opening in cooperation with the first opening so that the elongated refractory element snugly fits over the skid pipe and the second opening cooperates with the wear bar and an interconnected metal mesh solidly embedded within the elongated refractory element and positioned about and adjacent the first opening so as to be substantially adjacent said skid pipe, said elongated refractory element having a plurality of spaced and staggered pluglike openings extending therethrough to permit anchoring of the metal mesh to the skid pipe through said pluglike openings as the sole anchoring means for the protective refractory member, each pluglike opening lying wholly within a single integral part of the hollow element.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
US41791A 1970-06-01 1970-06-01 Protective refractory member Expired - Lifetime US3647194A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US4179170A 1970-06-01 1970-06-01

Publications (1)

Publication Number Publication Date
US3647194A true US3647194A (en) 1972-03-07

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ID=21918336

Family Applications (1)

Application Number Title Priority Date Filing Date
US41791A Expired - Lifetime US3647194A (en) 1970-06-01 1970-06-01 Protective refractory member

Country Status (9)

Country Link
US (1) US3647194A (fr)
JP (1) JPS5119406B1 (fr)
BE (1) BE767678A (fr)
CA (1) CA950192A (fr)
FR (1) FR2095628A5 (fr)
GB (1) GB1300875A (fr)
LU (1) LU63228A1 (fr)
NL (1) NL155943B (fr)
SE (1) SE368424B (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3804585A (en) * 1972-07-06 1974-04-16 Urguhart Eng Co Ltd Precast furnace pipe insulation
US4070151A (en) * 1975-11-19 1978-01-24 Suey Paul V Metallurgical furnace with water-cooled work support
US4136624A (en) * 1976-07-12 1979-01-30 Sumitomo Durez Co., Ltd Incinerator for refuse in containers and method of incineration therefor
US4149846A (en) * 1977-05-24 1979-04-17 United States Steel Corporation Method and means of insulating water-cooled pipes in a furnace
US4189301A (en) * 1977-05-06 1980-02-19 Urquhart Engineering Company, Limited Reinforced insulating members
US4747775A (en) * 1986-06-10 1988-05-31 Kawasaki Steel Corporation Skid beam for heating furnaces of walking beam type
WO1994000723A1 (fr) * 1992-06-29 1994-01-06 Sse International Corporation, Inc. Elements de support pour piece a usiner refroidis par eau destines a un four de chauffage
US6102694A (en) * 1998-10-01 2000-08-15 M. H. Detrick Co. Pipe refractory insulation for furnaces
US20100126623A1 (en) * 2008-11-22 2010-05-27 Thomas Alan Denning Containment device, method and system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5692301A (en) * 1979-12-22 1981-07-27 Meidensha Electric Mfg Co Ltd Hybrid engine
FR2542433B1 (fr) * 1983-03-11 1988-01-29 Stein Heurtey Fours a longerons refractaires
FR2585119B1 (fr) * 1985-07-16 1989-03-10 Stein Heurtey Element de support de charge pour four de rechauffage de produits siderurgiques

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2693352A (en) * 1950-08-14 1954-11-02 Frederick S Bloom Furnace insulation system
US3120247A (en) * 1959-10-06 1964-02-04 Sulzer Ag Protective linings for apparatus subjected to considerable temperature variations
US3226101A (en) * 1963-10-21 1965-12-28 Flinn & Dreffein Engineering C Insulated furnace members
US3329414A (en) * 1965-03-30 1967-07-04 United States Steel Corp Insulated water-cooled furnace supporting structure
US3486533A (en) * 1966-03-18 1969-12-30 Rust Furnace Co Pipe insulation jacket

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2693352A (en) * 1950-08-14 1954-11-02 Frederick S Bloom Furnace insulation system
US3120247A (en) * 1959-10-06 1964-02-04 Sulzer Ag Protective linings for apparatus subjected to considerable temperature variations
US3226101A (en) * 1963-10-21 1965-12-28 Flinn & Dreffein Engineering C Insulated furnace members
US3329414A (en) * 1965-03-30 1967-07-04 United States Steel Corp Insulated water-cooled furnace supporting structure
US3486533A (en) * 1966-03-18 1969-12-30 Rust Furnace Co Pipe insulation jacket

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3804585A (en) * 1972-07-06 1974-04-16 Urguhart Eng Co Ltd Precast furnace pipe insulation
US4070151A (en) * 1975-11-19 1978-01-24 Suey Paul V Metallurgical furnace with water-cooled work support
US4136624A (en) * 1976-07-12 1979-01-30 Sumitomo Durez Co., Ltd Incinerator for refuse in containers and method of incineration therefor
US4189301A (en) * 1977-05-06 1980-02-19 Urquhart Engineering Company, Limited Reinforced insulating members
US4149846A (en) * 1977-05-24 1979-04-17 United States Steel Corporation Method and means of insulating water-cooled pipes in a furnace
US4747775A (en) * 1986-06-10 1988-05-31 Kawasaki Steel Corporation Skid beam for heating furnaces of walking beam type
WO1994000723A1 (fr) * 1992-06-29 1994-01-06 Sse International Corporation, Inc. Elements de support pour piece a usiner refroidis par eau destines a un four de chauffage
US5284440A (en) * 1992-06-29 1994-02-08 Sse International Corporation Water-cooled, workpiece-supporting members for a heating furnace
US6102694A (en) * 1998-10-01 2000-08-15 M. H. Detrick Co. Pipe refractory insulation for furnaces
US20100126623A1 (en) * 2008-11-22 2010-05-27 Thomas Alan Denning Containment device, method and system
US8475078B2 (en) * 2008-11-22 2013-07-02 Thomas Alan Denning Containment device, method and system

Also Published As

Publication number Publication date
DE2125885B2 (de) 1975-06-19
FR2095628A5 (fr) 1972-02-11
NL7107172A (fr) 1971-12-03
CA950192A (en) 1974-07-02
JPS5119406B1 (fr) 1976-06-17
BE767678A (fr) 1971-10-18
LU63228A1 (fr) 1971-09-01
NL155943B (nl) 1978-02-15
GB1300875A (en) 1972-12-20
DE2125885A1 (de) 1971-12-16
SE368424B (fr) 1974-07-01

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