EP1734323A2 - Cadre pour le support de pièces durant le traitement thermique - Google Patents

Cadre pour le support de pièces durant le traitement thermique Download PDF

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Publication number
EP1734323A2
EP1734323A2 EP05105300A EP05105300A EP1734323A2 EP 1734323 A2 EP1734323 A2 EP 1734323A2 EP 05105300 A EP05105300 A EP 05105300A EP 05105300 A EP05105300 A EP 05105300A EP 1734323 A2 EP1734323 A2 EP 1734323A2
Authority
EP
European Patent Office
Prior art keywords
frame
frame according
supporting
articles
rollers
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.)
Withdrawn
Application number
EP05105300A
Other languages
German (de)
English (en)
Other versions
EP1734323A3 (fr
Inventor
Elio Gerardi
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.)
Inteco Ceramic Supplies Srl
Original Assignee
Inteco Ceramic Supplies Srl
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 Inteco Ceramic Supplies Srl filed Critical Inteco Ceramic Supplies Srl
Publication of EP1734323A2 publication Critical patent/EP1734323A2/fr
Publication of EP1734323A3 publication Critical patent/EP1734323A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F27D3/12—Travelling or movable supports or containers for the charge
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • C21D9/0012—Rolls; Roll arrangements
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • C21D9/0018—Details, accessories not peculiar to any of the following furnaces for charging, discharging or manipulation of charge
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0056—Furnaces through which the charge is moved in a horizontal straight path
    • 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
    • F27D3/12—Travelling or movable supports or containers for the charge
    • F27D3/123—Furnace cars
    • 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
    • F27D5/00—Supports, screens, or the like for the charge within the furnace
    • F27D5/0006—Composite supporting structures
    • 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
    • F27D5/00—Supports, screens, or the like for the charge within the furnace
    • F27D5/0031—Treatment baskets for ceramic articles

Definitions

  • the present invention relates to a frame for supporting articles, particularly ceramic products or the like subjected to heat treatments.
  • the drying operation is accompanied by the evaporation of a certain amount of water contained in the article, causing therein a slippage of the particles that constitute the ceramic material and their compaction so as to close the voids left by the water; accordingly, there is a gradual loss of weight on the part of the article and there is a more or less conspicuous shrinkage in all three spatial directions.
  • heating often causes a slight but significant expansion of the ceramic article, the extent of which is linked to the chemical nature of the material, to its crystalline or glassy structure, and to the transformations that occur during the application of heat.
  • Such articles usually rest on supporting frames, such as platforms/continuous plates or grid-like structures constituted by a set of mutually connected transverse and longitudinal rods.
  • such frames are commonly made of refractory material and are used within conventional firing kilns and drying kilns, often mounted on movable carriages or platforms which can slide along rails and/or prism-shaped guides in order to insert the products still to be heated into the firing kiln/drying kiln and extract them at the end of the thermal treatment.
  • the aim of the present invention is to eliminate the drawbacks noted above of the background art, by providing a frame for supporting articles that avoids the onset of dangerous tensions inside the products being processed when they are subjected to shrinkage or expansion, allowing to process them without particular risks of damage and breakage.
  • an object of the present invention is to be simple and straightforward to assemble, without requiring the use of sophisticated mechanisms or devices in order to operate.
  • Another object of the present invention is to provide a frame that is simple, relatively easy to provide in practice, safe in use, effective in operation, and has a relatively low cost.
  • the present frame for supporting articles characterized in that it comprises means for supporting at least one plurality of cylindrical rollers, which are substantially parallel to each other, are suitable to form a supporting surface for the articles, and can be associated with said supporting means by interposing rotary guiding means which are suitable to allow their rotation about their own axis.
  • the reference numeral 1 generally designates a frame for supporting articles.
  • the present invention is used to support ceramic articles, such as tiles, strip tiles, sanitary fixture, clay products and the like, on the carriages C, which are suitable to be inserted within the drying kilns and/or firing kilns used in the ceramic industry.
  • the articles are subjected to a thermal treatment designed to apply heat more or less gradually and the material that constitutes the frame 1 must be able to withstand the high temperatures reached during this process.
  • the present invention might also be used to support non-ceramic products subjected to different treatment processes, of a thermal type (for example for cooling instead of heating, as in the case of use within refrigeration chambers or the like) but not only.
  • Figure 1 illustrates one of the carriages C, on which two frames 1 are mounted.
  • the carriage C is provided with three supporting bases B, which lie at right angles to the advancement direction of the carriage C and are mutually aligned along such direction, each frame 1 being supported on the base B that lies centrally and on a corresponding end base B.
  • each frame 1 comprises means 2 for supporting a plurality of cylindrical rollers 3, which are mutually parallel and are suitable to form a supporting surface for the ceramic articles.
  • the rollers 3 can be associated with the supporting means 2 by interposing rotary guiding means 4, which are capable of allowing them to rotate about their own axis.
  • the supporting means 2 are constituted by two mutually parallel hollow bars, with respect to which the rollers 3 are arranged at right angles.
  • Each one of the bars 2 has a substantially rectangular cross-section and is arranged along a corresponding base B of the carriage; in particular, each base B has, at its ends, two centering bodies Bi, on which it is possible to rest a side 2a of the corresponding bar 2.
  • each bar 2 comprises a partition 2b that lies along the entire length thereof.
  • the rotary guiding means 4 are constituted by a plurality of recesses formed in the partitions 2b, in which the ends of the rollers 3 can rotate by sliding.
  • Such recesses are formed with a semicircular profile, which is open upward and has dimensions that are substantially equal to the diameter of the rollers 3, which in practice can be arranged so as to rest on the bars 2 and remain in position within the recesses 4 by gravity.
  • the material of which the frames 1 are made in addition to being resistant to high temperatures, is also very hard, so as to reduce adhesion and/or abrasion between the rollers 3 and the bars 2 and facilitate their mutual sliding; preferably, such material is of the type of silicon carbide or the like.
  • the frame 1 is an integral part of the carriage C; the bars 2 in fact are associated with the bases B, which in practice act as a support that is suitable to keep their relative position unchanged.
  • the frame 1 is an independent body, which is separate with respect to the carriage C and can be separated from it, as in the case in which, for example, the frame comprises one or more rods which allow to rigidly connect the bars 2 to each other.
  • the operation of the invention is as follows: during the thermal treatment of the articles arranged on the frame 1, the rollers 3 can turn about their own axis, being turned by the shrinkage/expansion of the articles without contrasting it.
  • the articles can contract and elongate freely at right angles to the rollers 3; in doing so, they do not have portions that remain constantly in direct contact with the frame 1, allowing the ceramic material to shrink or expand also in a direction that is parallel to the rollers 3.
  • the described invention achieves the intended aim and objects, and in particular the fact is stressed that it allows, with a structure that is simple and straightforward to assemble, to cooperate with any shrinkage/expansion of the products arranged thereon, avoiding the onset of internal tensions that might damage the articles in some way.
  • cylindrical rollers allows to reduce considerably the surface of direct contact between the frame and the products; if used inside firing kilns, drying kilns, refrigeration chambers or the like, this allows to improve considerably the transmission of heat between the environment and the articles, increasing the overall efficiency of the treatment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
EP05105300A 2004-06-17 2005-06-16 Cadre pour le support de pièces durant le traitement thermique Withdrawn EP1734323A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMO20040150 ITMO20040150A1 (it) 2004-06-17 2004-06-17 Telaio per il sostegno di manufatti

Publications (2)

Publication Number Publication Date
EP1734323A2 true EP1734323A2 (fr) 2006-12-20
EP1734323A3 EP1734323A3 (fr) 2008-10-29

Family

ID=36999889

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05105300A Withdrawn EP1734323A3 (fr) 2004-06-17 2005-06-16 Cadre pour le support de pièces durant le traitement thermique

Country Status (2)

Country Link
EP (1) EP1734323A3 (fr)
IT (1) ITMO20040150A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2138789A1 (fr) * 2008-06-26 2009-12-30 Imerys TC Dispositif de séchage d'un produit en céramique, notamment en argile
CN111043862A (zh) * 2019-12-24 2020-04-21 蔡燕旋 一种变电站用绝缘瓷质套管烧结成型固定支架
EP3839080A1 (fr) * 2019-12-17 2021-06-23 ImerTech SAS Kits de supports de cuisson et éléments de kits de supports de cuisson pour le traitement de produits à haute température sans déformation et sans rupture et utilisation associée

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1156255A (en) * 1966-11-12 1969-06-25 Enrico Putin A Frame having Several Levels for Supporting Clay Elements for Bricks
GB1584894A (en) * 1977-03-24 1981-02-18 Studiceram Spa Combination of tunnel-type kiln and monolayer truck
US5785519A (en) * 1994-02-18 1998-07-28 Riedhammer Gmbh Structure for a firing table
DE10143996C1 (de) * 2001-09-07 2003-06-12 Eisenmann Kg Maschbau Vorrichtung zum Transport von keramischen, sich im grünen Zustand befindlichen Werkstücken durch einen Trockenofen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1156255A (en) * 1966-11-12 1969-06-25 Enrico Putin A Frame having Several Levels for Supporting Clay Elements for Bricks
GB1584894A (en) * 1977-03-24 1981-02-18 Studiceram Spa Combination of tunnel-type kiln and monolayer truck
US5785519A (en) * 1994-02-18 1998-07-28 Riedhammer Gmbh Structure for a firing table
DE10143996C1 (de) * 2001-09-07 2003-06-12 Eisenmann Kg Maschbau Vorrichtung zum Transport von keramischen, sich im grünen Zustand befindlichen Werkstücken durch einen Trockenofen

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2138789A1 (fr) * 2008-06-26 2009-12-30 Imerys TC Dispositif de séchage d'un produit en céramique, notamment en argile
FR2933174A1 (fr) * 2008-06-26 2010-01-01 Imerys Tc Dispositif de sechage d'un produit en ceramique,notamment en argile
EP3839080A1 (fr) * 2019-12-17 2021-06-23 ImerTech SAS Kits de supports de cuisson et éléments de kits de supports de cuisson pour le traitement de produits à haute température sans déformation et sans rupture et utilisation associée
CN111043862A (zh) * 2019-12-24 2020-04-21 蔡燕旋 一种变电站用绝缘瓷质套管烧结成型固定支架
CN111043862B (zh) * 2019-12-24 2020-11-03 浙江峰邦机械科技有限公司 一种变电站用绝缘瓷质套管烧结成型固定支架

Also Published As

Publication number Publication date
EP1734323A3 (fr) 2008-10-29
ITMO20040150A1 (it) 2004-09-17

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