DE4302967C1 - Enamelling of porous sintered ferrous metal part - esp. for surface protection of gas burner cover - Google Patents

Enamelling of porous sintered ferrous metal part - esp. for surface protection of gas burner cover

Info

Publication number
DE4302967C1
DE4302967C1 DE4302967A DE4302967A DE4302967C1 DE 4302967 C1 DE4302967 C1 DE 4302967C1 DE 4302967 A DE4302967 A DE 4302967A DE 4302967 A DE4302967 A DE 4302967A DE 4302967 C1 DE4302967 C1 DE 4302967C1
Authority
DE
Germany
Prior art keywords
enamelling
surface protection
parts
sintered
porous sintered
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 - Fee Related
Application number
DE4302967A
Other languages
German (de)
Inventor
Manfred Dr Weber
Friedhelm Schuetter
Werner Gronnenberg
Kurt Gertler
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.)
ELEKTRO GAS ARMATUREN
Sintermetallwerk Krebsoege GmbH
Original Assignee
ELEKTRO GAS ARMATUREN
Sintermetallwerk Krebsoege GmbH
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 ELEKTRO GAS ARMATUREN, Sintermetallwerk Krebsoege GmbH filed Critical ELEKTRO GAS ARMATUREN
Priority to DE4302967A priority Critical patent/DE4302967C1/en
Priority to EP93118315A priority patent/EP0609502A1/en
Priority to DE9318510U priority patent/DE9318510U1/en
Application granted granted Critical
Publication of DE4302967C1 publication Critical patent/DE4302967C1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • 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
    • C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
    • C23D5/00—Coating with enamels or vitreous layers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/06—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with radial outlets at the burner head
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/76—Protecting flame and burner parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2212/00—Burner material specifications
    • F23D2212/20—Burner material specifications metallic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/00003—Fuel or fuel-air mixtures flow distribution devices upstream of the outlet

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Soft Magnetic Materials (AREA)
  • Inorganic Insulating Materials (AREA)
  • Gas Burners (AREA)

Abstract

The application of the metallic surface enamelling process to a process for at least locally coating porous sintered iron and steel parts is claimed. Pref. the process is applied to the treatment of sintered high temp. parts, covers for the gas burners of domestic and industrial hobs, having a residual porosity of 5-35 vol.%, a density of 5.8-7.4 g/cu.cm. and a roughness depth of 5-50 microns. ADVANTAGE - The process provides surface protection of sintered parts even of expensive design and optical appearance.

Description

Die Erfindung richtet sich auf den Oberflächenschutz metal­ lischer Bauteile, die mittels der Sintertechnik hergestellt sind, insbesondere auf den Schutz von Bauteilen, die wäh­ rend des Gebrauches Hitze ausgesetzter Bauteile, wie Deckel von Gasbrennern von Haushalts- und Wirtschaftsherden od. dgl.The invention is directed to metal surface protection components made by means of sintering technology are, in particular on the protection of components that wäh components exposed to heat, such as lids of gas burners of household and economic stoves or the like

Bei Gasbrennern ist es bekannt, die Brennerdeckel aus Stahl, Stahlguß, Aluminium oder Messing herzustellen, wobei mehrere Arbeitsschritte notwendig sind. Da derartige Bren­ nerdeckel bei einem Gasherd optisch ganz wesentlich hervor­ treten, ist man bemüht, die Brennerdeckel sehr glatt zu ge­ stalten, was auch deren Reinigung vereinfacht. Heute be­ steht immer mehr das Bedürfnis, Brenner im Brenn- bzw. Emissionsverhalten von Schadstoffen zu optimieren, was zu zum Teil sehr aufwendigen Gestaltungen der einzelnen Bren­ nerelemente, wie Deckel, Brennerring u. dgl., führt.In gas burners it is known to remove the burner cap Manufacture steel, cast steel, aluminum or brass, whereby several steps are necessary. Because such bren nerdeckel in a gas stove optically very important kick, one tries to ge the burner cap very smooth design, which also simplifies their cleaning. Today be there is an increasing need to burners in the Optimize emission behavior of pollutants, leading to sometimes very complex designs of the individual brews ner elements, such as cover, burner ring and. Like., leads.

Aufgabe der Erfindung ist die Schaffung einer Lösung, mit der ein Oberflächenschutz bei derartigen Bauteilen auch bei aufwendiger Gestaltung möglich ist bei einem optisch an­ sprechenden Erscheinungsbild. The object of the invention is to provide a solution with which also provides surface protection for such components complex design is possible with an optical speaking appearance.  

Gelöst wird diese Aufgabe durch die Anwendung des Emaillie­ rens dieser metallischen Oberfläche auf die wenigstens be­ reichsweise Beschichtung porös gesinterter Eisen- und Stahlteile.This task is solved by using the enamel rens this metallic surface on the at least be rich coating of porous sintered iron and Steel parts.

Das Emaillieren metallischer Oberflächen ist z. B. aus dem Nachschlagewerk "ABC Technik und Naturwissenschaft", Bd. 1 (A-K), Verlag Harri Deutsch, Seite 244, bekannt. Darüber hinaus ist aus der US-Z Advanced Materials & Processes, Feb. 1992, Seiten 58, 59, das Flammspritzen oxidischer Be­ schichtungen auf Oberflächen bekannt. Eine andere Art des Oberflächenschutzes, z. B. durch mehrstündiges Erwärmen auf 300°C beschreibt die DE-Z Chemie-Ing.-Techn., 45, Feb. 1973, Seiten 209, 210.The enamelling of metallic surfaces is e.g. B. from the Reference book "ABC Technik und Naturwissenschaft", Vol. 1 (A-K), Verlag Harri Deutsch, page 244. About that is also from the US-Z Advanced Materials & Processes, Feb. 1992, pages 58, 59, the flame spraying of oxidic Be known coatings on surfaces. Another kind of Surface protection, e.g. B. by heating for several hours 300 ° C describes DE-Z Chemie-Ing.-Techn., 45, Feb. 1973, pages 209, 210.

Durch die Kombination zweier für sich gesehen bekannter Techniken, nämlich der Sintertechnik einerseits und der Emailliertechnik andererseits, ist es möglich, auch aufwen­ dig gestaltete metallische Bauteile pulvermetallurgisch ko­ stengünstig herzustellen, die nachfolgend lediglich eines Emaillierungsschrittes bedürfen, um zum endgültig fertigen Produkt zu kommen. Die bekannten Gestaltungsarten benötigen in der Regel eine Mehrzahl von Herstellungsschritten, was nicht nur zur Verteuerung der Elemente führt, sondern häu­ fig auch zu deren nur beschränkter Einsatzfähigkeit. Through the combination of two known per se Techniques, namely the sintering technique on the one hand and the Enamel technology, on the other hand, it is possible to spend too dig designed metallic components powder metallurgically ko inexpensive to manufacture, the following only one Enamelling step need to be finished Product to come. The known types of design need usually a plurality of manufacturing steps what not only leads to more expensive elements, but often fig also to their limited usability.  

Weitere Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen. Dabei ergibt sich die erfindungsgemäße An­ wendung zur Behandlung wärmebeaufschlagter Sinterteile, wie die Deckel von Gasbrennern, ebenso wie die Anwendung auf Sinterteile mit einer Restporösität von 5 bis 25 Vol.-%, einer Dichte von 5,8 bis 7,4 g/cm3 und einer Rauhtiefe von 5 bis 50 µm.Further embodiments of the invention result from the subclaims. This results in the application according to the invention for the treatment of heat-affected sintered parts, such as the covers of gas burners, as well as the application to sintered parts with a residual porosity of 5 to 25% by volume and a density of 5.8 to 7.4 g / cm 3 and a roughness depth of 5 to 50 µm.

Als Sintermaterial empfiehlt sich ein Pulvergemisch mit dem Basispulver Eisen und Legierungselementen, wie Kohlenstoff, Nickel, Siliciumoxid oder Silikaten der Erdalkali- oder Al­ kaligruppen, wobei die Legierungszusätze zweckmäßig unter 5% liegen.A powder mixture with the is recommended as the sintered material Base powder iron and alloying elements such as carbon, Nickel, silicon oxide or silicates of alkaline earth or Al potash groups, the alloying additions expediently under 5% lie.

Nach der Erfindung kann sich in Ausgestaltung die Anwendung auf Sinterteile beziehen, die vor dem Emaillieren geglüht worden sind.According to the invention, the application can be designed refer to sintered parts that have been annealed before enamelling have been.

Um eine bevorzugte Anwendung der Erfindung deutlicher wer­ den zu lassen, sind einige Beispiele von Brennerdeckelge­ staltungen in den nachfolgend beschriebenen Fig. 1 bis 4 dargestellt.In order to make a preferred application of the invention clearer who the, some examples of Brennerdeckelge events are shown in FIGS . 1 to 4 described below.

Ein allgemein mit 1 bezeichneter, in Fig. 1 teilweise ge­ schnittener Brenner weist neben dem hier im Vordergrund stehenden Brennerdeckel 2 mit einer Emaillebeschichtung 3 ein Brennerstativ 4, welches eine mit 5 bezeichnete Gasmul­ de durchsetzt, sowie weitere Bauteile auf. Die weiteren Bauteile sind beispielsweise ein Steckaufsatz 6, ein Brenner­ ring 7 mit den Gasaustrittskanälen 8 und ggf. mit Zu­ satzgasaustrittsöffnungen 9, worauf es hier aber nicht nä­ her ankommt.A generally designated 1 , in Fig. 1 partially cut burner has in addition to the burner cap 2 in the foreground here with an enamel coating 3, a burner stand 4 , which passes through a designated 5 Gasmul de, and other components. The other components are, for example, a plug-in attachment 6 , a burner ring 7 with the gas outlet channels 8 and possibly with gas outlet openings 9 , which is not important here.

Erkennbar kann der Brennerdeckel 2 sehr unterschiedlich ge­ staltet sein, etwa einen vergleichsweise kleinen Anströmke­ gel 10, wie im Beispiel der Fig. 1, aufweisen, einen großen Anströmkegel 10a gemäß Fig. 2 oder eine glatte Unterkante 10b, wie in Fig. 3. In Fig. 4 ist schließlich dargestellt, daß der Deckel 2c mit einer nach oben gewölbten Innenfläche 10c ausgerüstet ist.It can be seen that the burner cap 2 can be configured very differently, for example have a comparatively small inflow cone 10 , as in the example in FIG. 1, a large inflow cone 10 a in accordance with FIG. 2, or a smooth lower edge 10 b, as in FIG. 3 . In Fig. 4 is finally shown that the lid 2 c is equipped with an upwardly curved inner surface 10 c.

Soweit dies die Sintertechnik zuläßt, können auch andere Bauteile erfindungsgemäß gestaltet sein, etwa der Steckauf­ satz 6, um nur ein Beispiel zu nennen.As far as the sintering technology allows, other components can be designed according to the invention, such as the plug-in set 6 , to name just one example.

Claims (4)

1. Anwendung des Emaillierens metallischer Oberflächen auf die wenigstens bereichsweise Beschichtung porös gesinterter Ei­ sen- und Stahlteile.1. Application of enamelling metallic surfaces on the Porous sintered egg at least in some areas steel and steel parts. 2. Anwendung nach Anspruch 1 auf die Behandlung wärmebeauf­ schlagter Sinterteile, wie die Deckel von Gasbrennern von Haushalts- und Wirtschaftsherden.2. Application according to claim 1 to the heat treatment sintered parts, such as the covers of gas burners from Household and economic stoves. 3. Anwendung nach Anspruch 1 oder 2 auf Sinterteile mit einer Restporösität von 5 bis 35 Vol.-%, einer Dichte von 5,8 bis 7,4 g/cm3 und einer Rauhtiefe von 5 bis 50 µm.3. Application according to claim 1 or 2 on sintered parts with a residual porosity of 5 to 35 vol .-%, a density of 5.8 to 7.4 g / cm 3 and a surface roughness of 5 to 50 µm. 4. Anwendung nach einem der Ansprüche 1 bis 3 auf Sinterteile, die vor dem Emaillieren geglüht worden sind.4. Application according to one of claims 1 to 3 on sintered parts, that have been annealed before enamelling.
DE4302967A 1993-02-03 1993-02-03 Enamelling of porous sintered ferrous metal part - esp. for surface protection of gas burner cover Expired - Fee Related DE4302967C1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE4302967A DE4302967C1 (en) 1993-02-03 1993-02-03 Enamelling of porous sintered ferrous metal part - esp. for surface protection of gas burner cover
EP93118315A EP0609502A1 (en) 1993-02-03 1993-11-12 Process for making a metallic workpiece by a sintering method
DE9318510U DE9318510U1 (en) 1993-02-03 1993-12-03 Sintered component

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4302967A DE4302967C1 (en) 1993-02-03 1993-02-03 Enamelling of porous sintered ferrous metal part - esp. for surface protection of gas burner cover

Publications (1)

Publication Number Publication Date
DE4302967C1 true DE4302967C1 (en) 1994-06-01

Family

ID=6479496

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DE4302967A Expired - Fee Related DE4302967C1 (en) 1993-02-03 1993-02-03 Enamelling of porous sintered ferrous metal part - esp. for surface protection of gas burner cover
DE9318510U Expired - Lifetime DE9318510U1 (en) 1993-02-03 1993-12-03 Sintered component

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE9318510U Expired - Lifetime DE9318510U1 (en) 1993-02-03 1993-12-03 Sintered component

Country Status (2)

Country Link
EP (1) EP0609502A1 (en)
DE (2) DE4302967C1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0844437A3 (en) * 1996-11-20 1998-12-23 EGA Engineering GmbH Gas burner with burner cap
DE10124013A1 (en) * 2001-05-17 2002-11-21 Isphording Germany Gmbh Burner head of a gas burner

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6299436B1 (en) * 1997-10-20 2001-10-09 Bsh Home Appliances Corporation Plurality fingered burner
US7628609B2 (en) 2006-12-29 2009-12-08 Electrolux Home Products, Inc. Hub and spoke burner with flame stability
EP2090826B1 (en) * 2008-02-15 2014-11-19 BSH Bosch und Siemens Hausgeräte GmbH Gas burner head
US8596259B2 (en) * 2009-01-13 2013-12-03 Electrolux Home Products, Inc. High efficiency burner
ITTO20111006A1 (en) * 2011-11-03 2013-05-04 Indesit Co Spa GAS BURNER, IN PARTICULAR FOR A COOKING APPLIANCE
RU177321U1 (en) * 2017-07-25 2018-02-15 федеральное государственное бюджетное образовательное учреждение высшего образования "Белгородский государственный технологический университет им. В.Г. Шухова" GAS-BURNER
KR20210107089A (en) 2018-12-26 2021-08-31 쓰리엠 이노베이티브 프로퍼티즈 캄파니 Burners and Additive Manufacturing Methods

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JPS5846523B2 (en) * 1976-06-08 1983-10-17 株式会社徳力本店 Manufacturing method of scented porous material for precious metal accessories
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Title
ABC Technik und Naturwissenschaft, Bd. 1,(A-K), Veg. Harri Deutsch, S. 244 *
DE-Z.: Chemie-Ing.-Techn., 45 (Febr. 73), S. 209, 210 *
US-Z.: Advanced Materials & Processes (Febr. 92), S. 58, 59 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0844437A3 (en) * 1996-11-20 1998-12-23 EGA Engineering GmbH Gas burner with burner cap
DE10124013A1 (en) * 2001-05-17 2002-11-21 Isphording Germany Gmbh Burner head of a gas burner

Also Published As

Publication number Publication date
DE9318510U1 (en) 1994-07-28
EP0609502A1 (en) 1994-08-10

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