EP2211099A1 - Utilisation d'acier inoxydable à base de chrome pour la fabrication d'une unité magnétique d'ouverture manuelle à usage domestique activée par un thermocouple ou un élément équivalent - Google Patents

Utilisation d'acier inoxydable à base de chrome pour la fabrication d'une unité magnétique d'ouverture manuelle à usage domestique activée par un thermocouple ou un élément équivalent Download PDF

Info

Publication number
EP2211099A1
EP2211099A1 EP09380005A EP09380005A EP2211099A1 EP 2211099 A1 EP2211099 A1 EP 2211099A1 EP 09380005 A EP09380005 A EP 09380005A EP 09380005 A EP09380005 A EP 09380005A EP 2211099 A1 EP2211099 A1 EP 2211099A1
Authority
EP
European Patent Office
Prior art keywords
magnetic
alloy
chromium
stainless steel
magnetic unit
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Withdrawn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
EP09380005A
Other languages
German (de)
English (en)
Inventor
José Luis Flores Torre
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP09380005A priority Critical patent/EP2211099A1/fr
Priority to BRPI1000111-5A priority patent/BRPI1000111A2/pt
Priority to CN201010141724A priority patent/CN101792887A/zh
Publication of EP2211099A1 publication Critical patent/EP2211099A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/005—Regulating fuel supply using electrical or electromechanical means
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/11—Making amorphous alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/10—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
    • F23N5/105—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples using electrical or electromechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/14—Fuel valves electromagnetically operated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/24—Valve details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/14708—Fe-Ni based alloys

Definitions

  • the present invention relates to a domestic use and manual opening magnetic unit actuated by a thermocouple or equivalent element. It particularly relates to the use of a chromium-based stainless steel alloy in the production of the magnetic armature, of the magnetic core or of both elements of said magnetic unit.
  • the magnetic units forming part of a Magnetic Unit-Thermocouple Assembly are elements which are well known and used in the state of the art, which are disclosed, among others, in the following documents MU 200203006, MU 200502016, EP 1624247 , EP 1909029 or WO03/085324 . They are used as safety systems for domestic gas cookers, for domestic gas water heaters and for domestic gas water boilers.
  • the Magnetic Unit-Thermocouple Assembly acts as a system for cutting off the gas flow to the apparatus when the flame of the burner is extinguished for some reason.
  • thermocouple generates in the presence of the flame an electrical voltage which keeps the valve of the Magnetic Unit open, and allows the gas to pass. If the flame is extinguished for some reason, the Thermocouple (or equivalent element) stops generating the electrical voltage, the Magnetic Unit closes the gas valve, and thus prevents the gas from coming out in the electrical appliance, which could cause explosions or poison people.
  • the Magnetic Unit consists of several elements, including the magnetic core and the magnetic armature.
  • the magnetic core is the element excited by a coil receiving the electrical voltage generated by the thermocouple, or equivalent functional element; and attracts the magnetic armature, which is solidarily joined to the gas valve.
  • the magnetic armature and the magnetic core of a magnetic unit actuated by a thermocouple are manufactured from a material consisting of a Fe-Ni alloy.
  • Fe-Ni alloys have an excellent combination of those properties which are necessary to meet the demands of magnetic units, namely, magnetism, magnetic hysteresis, residual magnetism, coercivity and resistance to corrosion.
  • current used Fe-Ni alloys are very expensive due to the fact that the minimum amount of Ni which must be present in said alloys is of the order of 48%. In this sense it is known that amounts of Ni lower than 48% provide alloys with a much lower resistance to corrosion and are therefore unacceptable.
  • the inventors have discovered that it is possible to manufacture the magnetic armature, the magnetic core or both elements of a domestic use and manual opening magnetic unit actuated by a thermocouple from chromium-based stainless steel alloys and obtain an efficient and totally satisfactory functionality of said magnetic core.
  • These alloys have an excellent combination of the magnetic properties which are desirable in an armature and a magnetic core so that they efficiently carry out their function within the magnetic unit. Furthermore, these alloys confer the necessary resistance to corrosion to the armature and the magnetic core throughout their useful life.
  • the invention relates to a new domestic use and manual opening magnetic unit actuated by thermocouple or an equivalent element in which the magnetic armature, the magnetic core, or both elements are made up of a chromium-based stainless steel alloy.
  • the chromium-based stainless steel alloys relate to those having a Cr content between 17.25 and 18.25%.
  • the magnetic armature, the magnetic core, or both elements are made up of a chromium-based stainless steel alloy having an amount of nickel less than 1%. In another preferred embodiment the alloy has an amount of niobium comprised between 0% and 0.25%.
  • the alloy has the following composition: Fe C Cr Ni Nb P If Mn S Mo 78.67 0.01 17.5 0.2 0.25 0.02 0.9 0.4 0.3 1.75
  • the alloy has the following composition: Fe C Cr Ni P If Mn S Mo 79.9 - 79.5 0.06 17.25-18.25 0.6 0.03 1-0.5 0.8 00.2-0.4 0.5
  • the invention relates to the use of a chromium-based stainless steel alloy in the production of the magnetic armature, of the magnetic core or of both elements of a domestic use and manual opening magnetic unit actuated by thermocouple or an equivalent element.
  • Said element can be any conventional element known to a person skilled in the art.
  • an alloy having an amount of nickel less than 1% is used.
  • the alloy has an amount of niobium comprised between 0% and 0.25%.
  • alloy called Alloy 1 the composition of which is the following: Fe C Cr Ni Nb P If Mn S Mo 78.67 0.01 17.5 0.2 0.25 0.02 0.9 0.4 0.3 1.75
  • an alloy having the following composition is used: Fe C Cr Ni P If Mn S Mo 79.9 - 79.5 0.06 17.25-18.25 0.6 0.03 1-0.5 0.8 00.2-0.4 0.5
  • Alloy 1 is stabilized with a niobium content of 0.25%, which provides it with a greater resistance against oxidation. Its permeability is lower than that of Alloy 2, and its coercivity is somewhat higher. Its saturation is also higher, and this parameter is very suitable for its use according to the present invention.
  • Alloy 2 has a lower resistance against oxidation than Alloy 1, which is something to be considered when selecting it for its use according to the present invention.
  • the use of one alloy or another can depend considerably on the characteristics of the gas which is going to be used in the electrical appliance in which the Magnetic Unit is placed. Both are commercially available.
  • Alloy 1 shows a better resistance against corrosion and has magnetic characteristics similar to Alloy 2, it is therefore the preferred alloy for its use in corrosive media. Its resistance against the corrosion has been analyzed with standard moisture and salt spray tests in environments with increasing temperatures and in much severer conditions than those that the domestic use magnetic groups of the invention must withstand; both tests shows the same conclusions.
  • the temperature to be applied to the chromium-based alloys is about 850oC.
  • Highly pure and well annealed alloys are the ones having an optimal magnetic performance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Soft Magnetic Materials (AREA)
  • Electromagnets (AREA)
EP09380005A 2009-01-21 2009-01-21 Utilisation d'acier inoxydable à base de chrome pour la fabrication d'une unité magnétique d'ouverture manuelle à usage domestique activée par un thermocouple ou un élément équivalent Withdrawn EP2211099A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP09380005A EP2211099A1 (fr) 2009-01-21 2009-01-21 Utilisation d'acier inoxydable à base de chrome pour la fabrication d'une unité magnétique d'ouverture manuelle à usage domestique activée par un thermocouple ou un élément équivalent
BRPI1000111-5A BRPI1000111A2 (pt) 2009-01-21 2010-01-19 uso de aço inoxidável à base de cromo para a fabricação de um grupo magnético de uso doméstico e abertura manual, acionado por termopar ou elemento equivalente
CN201010141724A CN101792887A (zh) 2009-01-21 2010-01-21 铬基不锈钢在制造由热电偶或等效元件驱动的家用手动开启磁性装置中的用途

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09380005A EP2211099A1 (fr) 2009-01-21 2009-01-21 Utilisation d'acier inoxydable à base de chrome pour la fabrication d'une unité magnétique d'ouverture manuelle à usage domestique activée par un thermocouple ou un élément équivalent

Publications (1)

Publication Number Publication Date
EP2211099A1 true EP2211099A1 (fr) 2010-07-28

Family

ID=40785547

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09380005A Withdrawn EP2211099A1 (fr) 2009-01-21 2009-01-21 Utilisation d'acier inoxydable à base de chrome pour la fabrication d'une unité magnétique d'ouverture manuelle à usage domestique activée par un thermocouple ou un élément équivalent

Country Status (3)

Country Link
EP (1) EP2211099A1 (fr)
CN (1) CN101792887A (fr)
BR (1) BRPI1000111A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015218439A1 (de) 2015-09-25 2017-03-30 Robert Bosch Gmbh In seinen Ummagnetisierungsverlusten reduziertes Teil und Verfahren zu seiner Herstellung

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109741902A (zh) * 2019-01-08 2019-05-10 苏州腾凯金属材料有限公司 一种电磁阀的去磁方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3757263A (en) * 1972-07-24 1973-09-04 Richdel Solenoid valve operator
JPS5841257A (ja) * 1981-09-02 1983-03-10 Hitachi Ltd 電磁式燃料噴射装置
EP0109155A1 (fr) * 1982-09-22 1984-05-23 Webber Electro Components Plc. Vanne électromagnétique avec commande par capteur externe
EP1288482A2 (fr) * 2001-08-31 2003-03-05 Delphi Technologies, Inc. Soupape à réglage de gaz avec équilibrage des forces
WO2003085324A1 (fr) 2002-04-11 2003-10-16 Omvl S.R.L. Dispositif de securite pour thermocouple, en particulier pour bruleurs a gaz
EP1624247A2 (fr) 2004-08-03 2006-02-08 Orkli, S. Coop. Soupape à gaz de sécurité avec un électro-aimant
EP1698817A2 (fr) * 2005-03-05 2006-09-06 Arichell Technologies, Inc. Appareil électromagnétique et procédé de régulation d'un fluide
EP1909029A2 (fr) 2006-10-04 2008-04-09 Orkli, S. Coop. Soupape électromagnétique de sécurité dotée d'un ressort interne

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0215143A (ja) * 1988-06-30 1990-01-18 Aichi Steel Works Ltd 冷間鍛造用軟磁性ステンレス鋼
MX9702650A (es) * 1994-10-11 1997-06-28 Crs Holdings Inc Material magnetico resistente a la corrosion.
FR2811683B1 (fr) * 2000-07-12 2002-08-30 Ugine Savoie Imphy Acier inoxydable ferritique utilisable pour des pieces ferromagnetiques
FR2832734B1 (fr) * 2001-11-26 2004-10-08 Usinor Acier inoxydable ferritique au soufre, utilisable pour des pieces ferromagnetiques

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3757263A (en) * 1972-07-24 1973-09-04 Richdel Solenoid valve operator
JPS5841257A (ja) * 1981-09-02 1983-03-10 Hitachi Ltd 電磁式燃料噴射装置
EP0109155A1 (fr) * 1982-09-22 1984-05-23 Webber Electro Components Plc. Vanne électromagnétique avec commande par capteur externe
EP1288482A2 (fr) * 2001-08-31 2003-03-05 Delphi Technologies, Inc. Soupape à réglage de gaz avec équilibrage des forces
WO2003085324A1 (fr) 2002-04-11 2003-10-16 Omvl S.R.L. Dispositif de securite pour thermocouple, en particulier pour bruleurs a gaz
EP1624247A2 (fr) 2004-08-03 2006-02-08 Orkli, S. Coop. Soupape à gaz de sécurité avec un électro-aimant
EP1698817A2 (fr) * 2005-03-05 2006-09-06 Arichell Technologies, Inc. Appareil électromagnétique et procédé de régulation d'un fluide
EP1909029A2 (fr) 2006-10-04 2008-04-09 Orkli, S. Coop. Soupape électromagnétique de sécurité dotée d'un ressort interne

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ANONYMOUS: "Stainless Steel - Grade Description Summary", INTERNET ARTICLE, 21 March 2006 (2006-03-21), pages 1 - 3, XP002534296, Retrieved from the Internet <URL:http://www.225steel.com/catalog/stainless-steel.pdf> [retrieved on 20090626] *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015218439A1 (de) 2015-09-25 2017-03-30 Robert Bosch Gmbh In seinen Ummagnetisierungsverlusten reduziertes Teil und Verfahren zu seiner Herstellung

Also Published As

Publication number Publication date
CN101792887A (zh) 2010-08-04
BRPI1000111A2 (pt) 2011-09-13

Similar Documents

Publication Publication Date Title
CA2179563C (fr) Robinet a membrane
US10041607B2 (en) High pressure hydrogen valve
JP3311427B2 (ja) 複合磁性部材およびその製法およびこの複合磁性部材を用いた電磁弁
EP1693143B1 (fr) Métal de sudure de la dureté de basse température et SR résistance fendre utilisée pour aciers au Cr-MO de haute résistance
EP1342807A3 (fr) Tube en acier inoxydable austénitique et procédé de fabrication de ce tube
EP2592166A1 (fr) TÔLE EN ACIER ENRICHI EN Ni, ET PROCÉDÉ DE FABRICATION DE CELLE-CI
EP1018564B1 (fr) Produit en acier inoxydable presentant une excellente activite antimicrobienne et procede de production de celui-ci
US20070057613A1 (en) Erosion resistant materials for spark plug components
GB2473116A (en) Magnetic core formed by a laminate stack of individual, involute, soft magnetic sheets
EP2211099A1 (fr) Utilisation d&#39;acier inoxydable à base de chrome pour la fabrication d&#39;une unité magnétique d&#39;ouverture manuelle à usage domestique activée par un thermocouple ou un élément équivalent
US6616125B2 (en) Corrosion resistant magnetic alloy an article made therefrom and a method of using same
JP5846793B2 (ja) 複合材料及び電磁アクチュエータ
EP2912354B1 (fr) Électrovanne à logement monobloc
CN102912249A (zh) 电磁不锈钢及其制造方法
CN111512403B (zh) 电磁阀
KR20210008732A (ko) 비자성 오스테나이트계 스테인리스강
JP2010238806A (ja) 耐食性を改善した軟磁性金属材料部品およびその製造方法
CN113718183A (zh) 无磁合金钢
CN101233248A (zh) 电磁钢板部件及其制造方法
EP1213540B1 (fr) Bougie-crayon de chauffage pour moteurs à combustion interne
JPH01121561A (ja) 電磁式燃料噴射弁
JP2736031B2 (ja) ソレノイド及び電磁弁
EP4124670A1 (fr) Acier résistant à la corrosion riche en chrome et en silicium et article le comprenant
EP4112222A1 (fr) Alliage ferrochrome à haute résistant à la corrosion en vrac et article le comprenant
CN107699806A (zh) 一种铁基高温材料

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA RS

17P Request for examination filed

Effective date: 20110112

17Q First examination report despatched

Effective date: 20110207

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

17Q First examination report despatched

Effective date: 20140728

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20160802