KFU. Card publication. Properties and experience of using 18KhGR steel for car toothed parts

KAZAN
FEDERAL UNIVERSITY

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- 中文
- ES

PROPERTIES AND EXPERIENCE OF USING 18KHGR STEEL FOR CAR TOOTHED PARTS

Form of presentation

Articles in international journals and collections

Year of publication

2022

Язык

английский

Authors, employees of KFU

Astashhenko Vladimir Ivanovich, author

Mukhametzyanova Gulnara Fagimovna, author

Bibliographic description in the original language

Astashchenko V.I, Makhonin V.V, Mukhametzyanova G.F, Properties and experience of using 18KhGR steel for car toothed parts//Chernye Metally. - 2022. - Vol.2022, Is.2. - P.36-41.

Annotation

The mechanical properties, chemical composition, hardenability and resistance to grain growth during heating of steel 18HGR were studied. The steel smelted at the Oskol electrometallurgical plant is characterized by narrow limits on the content of both individual chemical elements and the sum of manganese, chromium, nickel and molybdenum. The stability of boron steel in hardenability and its high strength, ductility and impact hardness are shown. When heated to 1000 ?C, the steel retains a fi ne-grained structure. The technology of isothermal annealing of forgings for the formation of a favorable steel structure has been developed and substantiated, for subsequent mechanical and hardening processing. It is emphasized that it is necessary to austenitizing forgings at 940-950 ?C, uniform and accelerated cooling-down to 680 ? 20 ?C, and isothermal holding with a step-down in temperature according to the cheme 680–660–640–600?C. The relationship between the durability of case-hardened toothed parts and the microhardness of individual structural components of steel in the core of the product is revealed. A resource-saving technology for thermochemical treatment of alloyed low-carbon steels of various composition is proposed. New criteria are recommended for predicting the stability of the properties of steel by its equivalent carbon content and the resistance of parts in operation by the microhardness of the structural components and the diff erence in values between them in the core of the product.

Keywords

Steel, mechanical properties, hardenability, structure, heat treatment, toothed parts, durability, cased-hardening, grain size.

The name of the journal

Chernye Metally

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85127265019&doi=10.17580%2fchm.2022.02.07&partnerID=40&md5=52fc47d4e8e71967bb178fa6f22556a5

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=265733&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Astashhenko Vladimir Ivanovich	ru_RU
dc.contributor.author	Mukhametzyanova Gulnara Fagimovna	ru_RU
dc.date.accessioned	2022-01-01T00:00:00Z	ru_RU
dc.date.available	2022-01-01T00:00:00Z	ru_RU
dc.date.issued	2022	ru_RU
dc.identifier.citation	Astashchenko V.I, Makhonin V.V, Mukhametzyanova G.F, Properties and experience of using 18KhGR steel for car toothed parts//Chernye Metally. - 2022. - Vol.2022, Is.2. - P.36-41.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=265733&p_lang=2	ru_RU
dc.description.abstract	Chernye Metally	ru_RU
dc.description.abstract	The mechanical properties, chemical composition, hardenability and resistance to grain growth during heating of steel 18HGR were studied. The steel smelted at the Oskol electrometallurgical plant is characterized by narrow limits on the content of both individual chemical elements and the sum of manganese, chromium, nickel and molybdenum. The stability of boron steel in hardenability and its high strength, ductility and impact hardness are shown. When heated to 1000 ?C, the steel retains a fi ne-grained structure. The technology of isothermal annealing of forgings for the formation of a favorable steel structure has been developed and substantiated, for subsequent mechanical and hardening processing. It is emphasized that it is necessary to austenitizing forgings at 940-950 ?C, uniform and accelerated cooling-down to 680 ? 20 ?C, and isothermal holding with a step-down in temperature according to the cheme 680–660–640–600?C. The relationship between the durability of case-hardened toothed parts and the microhardness of individual structural components of steel in the core of the product is revealed. A resource-saving technology for thermochemical treatment of alloyed low-carbon steels of various composition is proposed. New criteria are recommended for predicting the stability of the properties of steel by its equivalent carbon content and the resistance of parts in operation by the microhardness of the structural components and the diff erence in values between them in the core of the product.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Steel	ru_RU
dc.subject	mechanical properties	ru_RU
dc.subject	hardenability	ru_RU
dc.subject	structure	ru_RU
dc.subject	heat treatment	ru_RU
dc.subject	toothed parts	ru_RU
dc.subject	durability	ru_RU
dc.subject	cased-hardening	ru_RU
dc.subject	grain size.	ru_RU
dc.title	Properties and experience of using 18KhGR steel for car toothed parts	ru_RU
dc.type	Articles in international journals and collections	ru_RU