EP1180551A2 - Composé en vrac protégeant du durcissement pour la carburation sélective de pièces métalliques - Google Patents

Composé en vrac protégeant du durcissement pour la carburation sélective de pièces métalliques Download PDF

Info

Publication number
EP1180551A2
EP1180551A2 EP01117998A EP01117998A EP1180551A2 EP 1180551 A2 EP1180551 A2 EP 1180551A2 EP 01117998 A EP01117998 A EP 01117998A EP 01117998 A EP01117998 A EP 01117998A EP 1180551 A2 EP1180551 A2 EP 1180551A2
Authority
EP
European Patent Office
Prior art keywords
magnesium
weight
compositions according
contain
hardness protection
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.)
Granted
Application number
EP01117998A
Other languages
German (de)
English (en)
Other versions
EP1180551B1 (fr
EP1180551A3 (fr
Inventor
Stefan Dr. Wigger
Ulrich Dr. Baudis
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.)
Durferrit GmbH Thermotechnik
Original Assignee
Durferrit GmbH Thermotechnik
Houghton Durferrit 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 Durferrit GmbH Thermotechnik, Houghton Durferrit GmbH filed Critical Durferrit GmbH Thermotechnik
Publication of EP1180551A2 publication Critical patent/EP1180551A2/fr
Publication of EP1180551A3 publication Critical patent/EP1180551A3/fr
Application granted granted Critical
Publication of EP1180551B1 publication Critical patent/EP1180551B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/04—Treatment of selected surface areas, e.g. using masks

Definitions

  • the invention relates to protective hardnesses for the partial Carburizing metallic components.
  • the task of the present invention was therefore based on hardness protection compounds for partial carburizing to find and develop metallic components, which do not have the disadvantages of the known products.
  • the invention therefore relates to hardness protection compositions Base of boron glass forming substances for the partial Carburizing metallic components, which are characterized are that they add magnesium-silicon compounds contain.
  • magnesium-silicon compounds according to the invention becomes an increased security in gas carburizing against incorrectly insulated areas by draining Protective mass achieved.
  • magnesium silicates such as, for example, magnesium orthosilicate (Mg 2 SiO 4 ), magnesium metasilicate (MgSiO 3 ), magnesium trisilicate (Mg 2 Si 3 O 8 ) and talc.
  • Mg 2 SiO 4 magnesium orthosilicate
  • MgSiO 3 magnesium metasilicate
  • Mg 2 Si 3 O 8 magnesium trisilicate
  • Magnesium trisilicate is particularly preferred.
  • the hardness protection compositions according to the invention contain boron glass forming substances and magnesium-silicon compounds typically in a mass ratio of 2: 1 to 100: 1.
  • Prefers is a mass ratio of substances that form boron glass to magnesium-silicon compounds from 5: 1 to 15: 1 and especially about 10: 1.
  • the substances according to the invention contain as boron glass forming substances Hardness protection compounds boric acid, boron oxide, alkali and / or Alkaline earth metal borates.
  • the hardness protection compositions according to the invention can, based on the total amount, 35-70% by weight of an organic binder system contained and in liquid, semi-liquid or pasty Consistency is formulated.
  • Suitable binder systems are known per se and familiar to the expert and correspond to those used in practice so far Hardness protection compounds can be used.
  • Typical hardness protection compositions according to the invention contain, for example 40-55% by weight boron oxide, 3-6% by weight magnesium trisilicate and 39-57% by weight of an organic binder system, each based on the total amount.
  • the hardness protection compositions according to the invention can be very advantageous in processes for the partial carburization of metallic Components are used and are particularly suitable excellent for vacuum carburizing. They are used completely in accordance with the known hardness protection compounds. In contrast to those, however, there is no expiration of the Components, so that a flawless and safe treatment is guaranteed. They also do not cause contamination of the plants.
  • a protective composition made of 50% by weight boron oxide, 5% by weight magnesium trisilicate and 45% by weight of an organic binder system was applied to a component at room temperature and stored for 10 days with increased humidity. After that the component was hardened to a case depth at 930 ° C for 5 h (Eh) of 1.2 mm carburized, quenched in oil and in one Industrial washing machine cleaned.
  • a protective composition composed of 55% by weight of boron oxide and 45% by weight of one organic binder system was at room temperature one component is applied and 10 days with increased humidity stored. The component was then at 930 ° C for 5 h carburized to a marriage of 1.2 mm, quenched in oil and cleaned in an industrial washing machine.
  • a protective composition made of 50% by weight boron oxide, 5% by weight magnesium trisilicate and 45% by weight of an organic binder system was applied to a component at room temperature and dried for 10 hours at room temperature. After that was the component in a vacuum coaling plant on a marriage carburized by 0.6 mm, quenched in a cold chamber and cleaned in an industrial washing machine.
  • a protective composition composed of 55% by weight of boron oxide and 45% by weight of one organic binder system was at room temperature a component is applied and 10 hours at room temperature dried. The component was then placed in a vacuum coaling plant carburized to a marriage of 0.6 mm, in one cold chamber and quenched in an industrial washing machine cleaned.
  • a protective composition based on water glass was used at room temperature applied to a component and 10 hours at room temperature dried. The component was then placed in a vacuum coaling plant carburized to a marriage of 0.6 mm, quenched in a cold chamber and in an industrial washing machine cleaned.
  • the hardness in the covered area was 29-32 HRC, in the unprotected area 61-63 HRC. It was a partial chipping of the protective compound of about To determine 20% of the applied mass during quenching. The chipped residues of the protective composition were hard and only with great effort from the quenching chamber, to remove in particular from the heat exchangers. Because these particles remain in the system, a reduction in plant runtime and deterioration the function. The residues of the protective mass could not be washed off in the industrial washing machine. The component could only be blasted with sand or glass beads getting cleaned.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Chemically Coating (AREA)
  • Paints Or Removers (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Lock And Its Accessories (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Glass Compositions (AREA)
EP01117998A 2000-08-07 2001-07-25 Composé en vrac protégeant du durcissement pour la carburation sélective de pièces métalliques Expired - Lifetime EP1180551B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10038447 2000-08-07
DE10038447A DE10038447C1 (de) 2000-08-07 2000-08-07 Abdeckmassen für das partielle Aufkohlen von metallischen Bauteilen

Publications (3)

Publication Number Publication Date
EP1180551A2 true EP1180551A2 (fr) 2002-02-20
EP1180551A3 EP1180551A3 (fr) 2006-05-03
EP1180551B1 EP1180551B1 (fr) 2010-01-06

Family

ID=7651565

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01117998A Expired - Lifetime EP1180551B1 (fr) 2000-08-07 2001-07-25 Composé en vrac protégeant du durcissement pour la carburation sélective de pièces métalliques

Country Status (9)

Country Link
US (1) US6964712B2 (fr)
EP (1) EP1180551B1 (fr)
JP (1) JP4938186B2 (fr)
AT (1) ATE454482T1 (fr)
BR (1) BR0103204B1 (fr)
CA (1) CA2354675C (fr)
DE (2) DE10038447C1 (fr)
ES (1) ES2338094T3 (fr)
PL (1) PL198128B1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8173221B2 (en) * 2008-03-18 2012-05-08 MCT Research & Development Protective coatings for metals
DE102011012333A1 (de) 2011-02-24 2012-08-30 DAM Härtetechnik Gmbh Härteschutzmittel für das partielle Härten von metallischen Werkstücken
DE102016214645A1 (de) * 2016-08-08 2018-02-08 Schaeffler Technologies AG & Co. KG Lagerschale für ein Halbschalenlager, sowie Halbschalenlager und dessen Verwendung
JP7019418B2 (ja) * 2017-12-28 2022-02-15 勝規 瀬川 耐熱性塗料

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1366305A (en) * 1920-02-06 1921-01-18 S H Morden & Company Ltd Protective composition for heat treatment of articles of iron, steel, and the like
EP0867524A1 (fr) * 1997-03-28 1998-09-30 Nard Institute Ltd. Procédé de masquage pour carboniser ou nitrurer localement un métal

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US1629072A (en) * 1923-12-01 1927-05-17 Ralph R Danielson Composition for and method of coating metal surfaces
US1921367A (en) * 1930-01-06 1933-08-08 Edward G Mahin Process of carburizing iron or steel
US2196232A (en) * 1938-04-22 1940-04-09 Nat Copper Paint Corp Protective paint
US2398809A (en) * 1944-08-26 1946-04-23 Steatite Res Corp Process for casehardening hollow metal members
AT170617B (de) * 1948-08-03 1952-03-10 Svit Np Schutzpaste zum Verhindern einer Aufkohlung von stählernen Werkstücken beim Einsatzhärten
DE969995C (de) * 1951-08-28 1958-08-07 Erich Nuessle Isolierpaste zur wahlweisen oertlichen Begrenzung einer Randzonenaufkohlung an Werkstuecken aus unlegierten und legierten Einsatzstaehlen waehrend der Aufkohlung mit festen pulverfoermigen Aufkohlungsmitteln in Einsatzhaerteoefen
US3151002A (en) 1959-09-26 1964-09-29 Zahnradfabrik Friedrichshafen Methods of selective carburization of ferrous metal surfaces and materials therefor
US3180765A (en) * 1961-05-17 1965-04-27 Rolls Royce Process for preventing carburization on ferrous metal surfaces
DE1286869B (de) * 1964-01-14 1969-01-09 Biebrach Einsatzschutzmasse fuer an der Oberflaeche nur stellenweise zu haertende Werkstuecke
DE2239254C2 (de) * 1970-12-30 1983-08-04 Organon Teknika Corp., Oklahoma City, Okla. "Säule zur Regenerierung einer zirkulierenden Dialysatlösung und Verwendung dieser Säule".
IT977241B (it) * 1972-02-16 1974-09-10 Daimler Benz Ag Procedimento per la cementazione di pezzi
GB1372113A (en) * 1973-01-30 1974-10-30 Lake L T Composition and process for the surface treatment of steel
JPS5360810A (en) * 1976-11-15 1978-05-31 Hitachi Ltd Preventing method for carburization and material thereof
US4102838A (en) 1977-05-23 1978-07-25 Hughes Tool Company Composition and method for selective boronizing
FR2423536A1 (fr) * 1978-04-17 1979-11-16 Interox Compositions et procede pour le lavage et le blanchiment
EP0419675B1 (fr) * 1989-04-01 1999-03-17 Kabushiki Kaisha Nard Kenkyusho Procede pour empecher la cementation ou la nitruration et masque pour empecher la cementattion, la nitruration ou l'oxydation
JPH0421720A (ja) * 1990-05-16 1992-01-24 Dainippon Plastics Co Ltd 浸炭防護用シートの製造方法
US5334417A (en) * 1992-11-04 1994-08-02 Kevin Rafferty Method for forming a pack cementation coating on a metal surface by a coating tape
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JPH08134535A (ja) * 1994-11-01 1996-05-28 Hitoshi Komori 窒化、浸炭防止用被覆材
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JP3798191B2 (ja) * 1999-07-19 2006-07-19 昭和飛行機工業株式会社 金属ハニカムの製造方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1366305A (en) * 1920-02-06 1921-01-18 S H Morden & Company Ltd Protective composition for heat treatment of articles of iron, steel, and the like
EP0867524A1 (fr) * 1997-03-28 1998-09-30 Nard Institute Ltd. Procédé de masquage pour carboniser ou nitrurer localement un métal

Also Published As

Publication number Publication date
PL349061A1 (en) 2002-02-11
US20020020471A1 (en) 2002-02-21
ATE454482T1 (de) 2010-01-15
JP2002115041A (ja) 2002-04-19
US6964712B2 (en) 2005-11-15
JP4938186B2 (ja) 2012-05-23
EP1180551B1 (fr) 2010-01-06
CA2354675A1 (fr) 2002-02-07
ES2338094T3 (es) 2010-05-04
DE50115294D1 (de) 2010-02-25
PL198128B1 (pl) 2008-05-30
CA2354675C (fr) 2009-06-23
BR0103204A (pt) 2002-03-26
EP1180551A3 (fr) 2006-05-03
DE10038447C1 (de) 2002-07-11
BR0103204B1 (pt) 2011-09-06

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