RU2651928C1 - Charge for producing iron-based sintered bodies - Google Patents

Charge for producing iron-based sintered bodies Download PDF

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Publication number
RU2651928C1
RU2651928C1 RU2017130002A RU2017130002A RU2651928C1 RU 2651928 C1 RU2651928 C1 RU 2651928C1 RU 2017130002 A RU2017130002 A RU 2017130002A RU 2017130002 A RU2017130002 A RU 2017130002A RU 2651928 C1 RU2651928 C1 RU 2651928C1
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Russia
Prior art keywords
iron
charge
fraction
powder
sintered bodies
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RU2017130002A
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Russian (ru)
Inventor
Юлия Алексеевна Щепочкина
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Юлия Алексеевна Щепочкина
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy

Abstract

FIELD: metallurgy.
SUBSTANCE: invention relates to powder metallurgy, particularly, to the production of iron-based sintered bodies. Invention can be used in instrument making. Charge for producing iron-based sintered bodies contains, mass%: iron-based powder fraction 0.063–0.08 mm – 15.0–17.0; iron-based powder fraction 0.35–0.45 mm – 63.0–73.0; cobalt-based powder fraction 0.063–0.08 mm – 7.0–10.0; nickel-based powder fraction 0.056–0.063 mm – 5.0–10.0.
EFFECT: sintered body obtained from this charge has high strength.
1 cl, 1 tbl

Description

Изобретение относится к области порошковой металлургии, в частности к производству железных спеченных изделий, которые могут быть использованы в приборостроении.The invention relates to the field of powder metallurgy, in particular to the production of sintered iron products that can be used in instrumentation.

Известна шихта, содержащая, мас. %: железный порошок фракции 0,063-0,08 мм - 10,0-12,0; железный порошок фракции менее 0,1 мм - 18,0-20,0; железный порошок фракции 0,35-0,45 мм - остальное [1].Known mixture containing, by weight. %: iron powder fractions of 0.063-0.08 mm - 10.0-12.0; iron powder fractions less than 0.1 mm - 18.0-20.0; iron powder fraction 0.35-0.45 mm - the rest [1].

Задачей изобретения является повышение прочности железных спеченных изделий.The objective of the invention is to increase the strength of sintered iron products.

Технический результат достигается тем, что шихта для получения железных спеченных изделий, включающая железный порошок фракции 0,063-0,08 мм, железный порошок фракции 0,35-0,45 мм, дополнительно содержит кобальтовый порошок фракции 0,063-0,08 мм и никелевый порошок фракции 0,056-0,063 мм при следующем соотношении компонентов, мас. %: железный порошок фракции 0,063-0,08 мм 15,0-17,0; железный порошок фракции 0,35-0,45 мм 63,0-73,0; кобальтовый порошок фракции 0,063-0,08 мм 7,0-10,0; никелевый порошок фракции 0,056-0,063 мм 5,0-10,0.The technical result is achieved in that the mixture for producing iron sintered products, including iron powder fraction 0,063-0,08 mm, iron powder fraction 0,35-0,45 mm, additionally contains cobalt powder fraction 0,063-0,08 mm and nickel powder fractions 0.056-0.063 mm in the following ratio of components, wt. %: iron powder fraction 0.063-0.08 mm 15.0-17.0; iron powder fractions 0.35-0.45 mm 63.0-73.0; cobalt powder fraction 0,063-0,08 mm 7.0-10.0; nickel powder fractions 0.056-0.063 mm 5.0-10.0.

В таблице приведены составы шихты.The table shows the composition of the charge.

Figure 00000001
Figure 00000001

Компоненты, входящие в состав шихты для получения железных спеченных изделий, проявляют себя следующим образом.The components that make up the mixture to obtain sintered iron products, manifest themselves as follows.

Железные порошки приведенных фракций способствуют образованию плотной и прочной структуры изделий с минимальным количеством пор и пустот. Кобальтовый порошок и никелевый порошок улучшают металлическую основу материала, способствует повышению прочности железных спеченных изделий.Iron powders of these fractions contribute to the formation of a dense and durable structure of products with a minimum number of pores and voids. Cobalt powder and nickel powder improve the metal base of the material, helps to increase the strength of sintered iron.

Спеченное изделие получают следующим образом.The sintered product is prepared as follows.

Порошки смешивают. Заготовки (толщиной 10 мм) из смеси формуют при давлении 400-420 МПа. Вместе с формами помещают их в электропечь и спекают в среде водорода при 1220°С в течение 60 мин.Powders are mixed. Billets (10 mm thick) from the mixture are molded at a pressure of 400-420 MPa. Together with the molds, they are placed in an electric furnace and sintered in a hydrogen medium at 1220 ° C for 60 minutes.

Источники информацииInformation sources

1. SU 1049558, 1983.1. SU 1049558, 1983.

Claims (2)

Шихта для получения железных спеченных изделий, содержащая железный порошок фракции 0,063-0,08 мм и железный порошок фракции 0,35-0,45 мм, отличающаяся тем, что она дополнительно содержит кобальтовый порошок фракции 0,063-0,08 мм и никелевый порошок фракции 0,056-0,063 мм при следующем соотношении компонентов, мас. %:A mixture for producing sintered iron products containing an iron powder of a fraction of 0.063-0.08 mm and an iron powder of a fraction of 0.35-0.45 mm, characterized in that it further comprises a cobalt powder of a fraction of 0.063-0.08 mm and a nickel powder of a fraction 0.056-0.063 mm in the following ratio of components, wt. %: железный порошок фракции 0,063-0,08 ммiron powder fractions of 0.063-0.08 mm 15,0-17,015.0-17.0 железный порошок фракции 0,35-0,45 мм iron powder fractions 0.35-0.45 mm 63,0-73,063.0-73.0 кобальтовый порошок фракции 0,063-0,08 ммcobalt powder fraction 0,063-0,08 mm 7,0-10,07.0-10.0 никелевый порошок фракции 0,056-0,063 ммnickel powder fractions 0.056-0.063 mm 5,0-10,05.0-10.0
RU2017130002A 2017-08-24 2017-08-24 Charge for producing iron-based sintered bodies RU2651928C1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1049558A1 (en) * 1982-07-16 1983-10-23 Завод N243 Гражданской Авиации Charge for making iron sintered products
SU1787682A1 (en) * 1990-07-17 1993-01-15 Respub N Proizv Ob Agropromrem Iron powder base mixture for manufacturing antifriction products
US5512080A (en) * 1992-11-27 1996-04-30 Toyota Jidosha Kabushiki Kaisha Fe-based alloy powder adapted for sintering, Fe-based sintered alloy having wear resistance, and process for producing the same
WO1998050593A1 (en) * 1997-05-08 1998-11-12 Federal-Mogul Sintered Products Limited Method of forming a component by sintering an iron-based powder mixture
RU2137860C1 (en) * 1998-04-29 1999-09-20 Костромской государственный технологический университет Iron-base powdered tool alloy

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1049558A1 (en) * 1982-07-16 1983-10-23 Завод N243 Гражданской Авиации Charge for making iron sintered products
SU1787682A1 (en) * 1990-07-17 1993-01-15 Respub N Proizv Ob Agropromrem Iron powder base mixture for manufacturing antifriction products
US5512080A (en) * 1992-11-27 1996-04-30 Toyota Jidosha Kabushiki Kaisha Fe-based alloy powder adapted for sintering, Fe-based sintered alloy having wear resistance, and process for producing the same
WO1998050593A1 (en) * 1997-05-08 1998-11-12 Federal-Mogul Sintered Products Limited Method of forming a component by sintering an iron-based powder mixture
RU2137860C1 (en) * 1998-04-29 1999-09-20 Костромской государственный технологический университет Iron-base powdered tool alloy

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