SU779442A1 - Method of surface strengthening of press-moulds - Google Patents

Method of surface strengthening of press-moulds Download PDF

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Publication number
SU779442A1
SU779442A1 SU762425348A SU2425348A SU779442A1 SU 779442 A1 SU779442 A1 SU 779442A1 SU 762425348 A SU762425348 A SU 762425348A SU 2425348 A SU2425348 A SU 2425348A SU 779442 A1 SU779442 A1 SU 779442A1
Authority
SU
USSR - Soviet Union
Prior art keywords
moulds
press
surface strengthening
molds
parts
Prior art date
Application number
SU762425348A
Other languages
Russian (ru)
Inventor
Станислав Альбертович Довнар
Александр Михайлович Григорьев
Елена Ивановна Сидор
Иван Иванович Трусов
Original Assignee
Физико-технический институт АН Белорусской ССР
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 Физико-технический институт АН Белорусской ССР filed Critical Физико-технический институт АН Белорусской ССР
Priority to SU762425348A priority Critical patent/SU779442A1/en
Application granted granted Critical
Publication of SU779442A1 publication Critical patent/SU779442A1/en

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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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)

Description

Изобретение относитс  к машиностроению и может быть использовано в инструментально-штамповом производстве при изготовлении формообразу  иих деталей пресс-форм дл  получени , например, пластмассовых изделий . . .Наиболее распространенный способ изготовлени  формообразующих деталей пресс-форм основан на холодном выдавливании рабочих фигур в заготовка из малоуглеродистых сталей с последующим упрочнением рабочих поверхнос тей. Известен способ поверхностного упрочнени  деталей и инструментов из малоуглеродистых сталей (0,1-0,3% С) включающий цементацию, например, твердыми углеродсодержаидими смес ми, закалку и отпуск 1 . . Цементованный слой, образованный на нелегиррванном или низколегирован ном материале про вл ет склонность к слипанию с пластмассой, что приводит к местному разрушению формуемых изделий при отделении их формообразующих детсшей. Известен способ поверхностного упрочнени  изделий, включаьдаий гальваническое покрытие хромом, цементацию закалки и отпуск 21 . Способ имеет недостатки. Во-первых , не обеспечивает создание твердой подложки карбидизированного хромового осадка, что приводит при эксплуатации формообразук дих деталей к образованию на рабочей фигуре вм тин и других дефектов, св занных с низкой несущей способностыа подложки . Во-вторых, способ предусматривает выполнение закалки после карбидизации хромового осадка, чтр приводит к охрупчиванию самого осадка и в особенности гладких границ раздела подложки с карбидизированным хромом. Известен способ поверхностного упрочнени  цементованных и термически обработанных формообразующих деталей пресс-форм дл  получени  пластмассовых изделий путем гальванического покрыти  хромом 3J . Способ обеспечивает защиту формообразующих деталей от коррозии и значительно ухудшает извлекаемость пластмассовых изделий без их разрушени  из прессформ , благодар  пониженной адгезии. Однако известный способ имеет недостаток , обусловленный зависимостью прочности хромового покрыти  от приThe invention relates to mechanical engineering and can be used in tool-die production in the manufacture of molds and their parts of the mold to obtain, for example, plastic products. . The most common method of making molding parts of molds is based on cold extrusion of working figures into a billet of low carbon steels followed by strengthening of the working surfaces. The known method of surface hardening of parts and tools from low-carbon steels (0.1-0.3% C) includes cementation, for example, with solid carbon-containing mixtures, quenching and tempering 1. . Cemented layer formed on unalloyed or low-alloyed material shows a tendency to stick together with plastic, which leads to local destruction of the molded products when separating them from the forming children. The known method of surface hardening of products, including electroplating with chrome, cementation hardening and tempering 21. The method has disadvantages. Firstly, it does not ensure the creation of a solid substrate of a carbidized chromic precipitate, which, during the operation of the shape of these parts, leads to the formation of mold and other defects on the working figure associated with the low bearing capacity of the substrate. Secondly, the method involves performing quenching after carbidization of the chromium precipitate, which leads to embrittlement of the precipitate itself and, in particular, smooth interfaces of the substrate with carbidized chromium. The known method of surface hardening of cemented and heat-treated forming parts of molds to obtain plastic products by electroplating chromium 3J. The method protects the forming parts from corrosion and significantly impairs the recoverability of plastic products without destroying them from the molds, due to reduced adhesion. However, the known method has a disadvantage due to the dependence of the strength of the chromium coating on

Claims (1)

45 Формула изобретения45 claims Способ, 'поверхностного упрочнения пресс-форм, включающий цементацию, закалку,1 отпуск и гальваническое поел крытие хромом, отличающийся тем,’ что, с целью повышения эксплуатационной стойкости, перед цементацией производят никелирование и диффузионный отжиг.'Method, 'surface hardening of molds, including cementation, hardening, 1 tempering and galvanic coating with chrome, characterized in that' in order to increase the operational stability, nickel plating and diffusion annealing are performed before cementation. '
SU762425348A 1976-12-01 1976-12-01 Method of surface strengthening of press-moulds SU779442A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU762425348A SU779442A1 (en) 1976-12-01 1976-12-01 Method of surface strengthening of press-moulds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU762425348A SU779442A1 (en) 1976-12-01 1976-12-01 Method of surface strengthening of press-moulds

Publications (1)

Publication Number Publication Date
SU779442A1 true SU779442A1 (en) 1980-11-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU762425348A SU779442A1 (en) 1976-12-01 1976-12-01 Method of surface strengthening of press-moulds

Country Status (1)

Country Link
SU (1) SU779442A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1716267A2 (en) * 2003-12-23 2006-11-02 Rolls-Royce Corporation Method for carburizing steel components

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1716267A2 (en) * 2003-12-23 2006-11-02 Rolls-Royce Corporation Method for carburizing steel components
EP1716267A4 (en) * 2003-12-23 2008-04-02 Rolls Royce Corp Method for carburizing steel components
US7648588B2 (en) 2003-12-23 2010-01-19 Rolls-Royce Corporation Method for carburizing steel components
EP2322687A1 (en) * 2003-12-23 2011-05-18 Rolls-Royce Corporation Method for carburizing steel components

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