Analysis of the Effect of Cementation Duration on the Effective Hardened Layer Thickness and Magnetic Parameter of 18ХГТ (18KhGT) Steel after Quenching

Highly stressed transmission parts of energy-saturated machines are made of steels subjected to carburization and subsequent hardening. A low-carbon steel product forms a strong, high-carbon surface layer with a soft and viscous core. An important parameter of the hardened layer is its effective thi...

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Main Authors: Sergei G. Sandomirski, Aleksandr L. Valko, Sergei P. Rudenko
Format: Article
Language:English
Published: National Academy of Sciences of Belarus, State Scientific Institution “The Joint Institute of Mechanical Engineering" 2020-09-01
Series:Механика машин, механизмов и материалов
Subjects:
Online Access:http://mmmm.by/en/readers-en/archive-room-en?layout=edit&id=1603
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spelling doaj-7ca094fa034447e6807cb795aeeedfc12021-08-30T09:22:42ZengNational Academy of Sciences of Belarus, State Scientific Institution “The Joint Institute of Mechanical Engineering"Механика машин, механизмов и материалов1995-04702518-14752020-09-013(52)7177https://doi.org/10.46864/1995-0470-2020-3-52-71-77Analysis of the Effect of Cementation Duration on the Effective Hardened Layer Thickness and Magnetic Parameter of 18ХГТ (18KhGT) Steel after QuenchingSergei G. Sandomirski0Aleksandr L. Valko1Sergei P. Rudenko2Joint Institute of Mechanical Engineering of the NAS of BelarusJoint Institute of Mechanical Engineering of the NAS of BelarusJoint Institute of Mechanical Engineering of the NAS of BelarusHighly stressed transmission parts of energy-saturated machines are made of steels subjected to carburization and subsequent hardening. A low-carbon steel product forms a strong, high-carbon surface layer with a soft and viscous core. An important parameter of the hardened layer is its effective thickness hэфф. The article studies the effect of the duration of the cementation process on hэфф of samples from 18ХГТ (18KhGT) steel used for the manufacture of gear wheels of highly loaded transmissions. The possibility of using a magnetic parameter for non-destructive testing hэфф was also investigated. The device “Magnetic Sorter MS-1” was used, which measures the gradient of the normal component of the remanent magnetization field above the point of contact of the magnet pole with the metal surface. To determine hэфф, interpolation of measurements of the distribution of microhardness HV over the layer thickness on manufactured microsections was used. HV microhardness values are converted to HRC hardness values according to the dependence recommended by the international standard. Studies have shown that hэфф of the cemented layer of 18ХГТ (18KhGT) steel after quenching linearly depends on the cementation time. There is a correlation between the hэфф of the samples studied and the readings of the MS-1 device. This is a prerequisite for the development of a non-destructive method for controlling the process of chemical heat treatment of gear wheels of transmissions of mobile machines.http://mmmm.by/en/readers-en/archive-room-en?layout=edit&id=1603surface hardeningcementationhardnesseffective thickness of the hardened layernon-destructive testingpole magnetization
collection DOAJ
language English
format Article
sources DOAJ
author Sergei G. Sandomirski
Aleksandr L. Valko
Sergei P. Rudenko
spellingShingle Sergei G. Sandomirski
Aleksandr L. Valko
Sergei P. Rudenko
Analysis of the Effect of Cementation Duration on the Effective Hardened Layer Thickness and Magnetic Parameter of 18ХГТ (18KhGT) Steel after Quenching
Механика машин, механизмов и материалов
surface hardening
cementation
hardness
effective thickness of the hardened layer
non-destructive testing
pole magnetization
author_facet Sergei G. Sandomirski
Aleksandr L. Valko
Sergei P. Rudenko
author_sort Sergei G. Sandomirski
title Analysis of the Effect of Cementation Duration on the Effective Hardened Layer Thickness and Magnetic Parameter of 18ХГТ (18KhGT) Steel after Quenching
title_short Analysis of the Effect of Cementation Duration on the Effective Hardened Layer Thickness and Magnetic Parameter of 18ХГТ (18KhGT) Steel after Quenching
title_full Analysis of the Effect of Cementation Duration on the Effective Hardened Layer Thickness and Magnetic Parameter of 18ХГТ (18KhGT) Steel after Quenching
title_fullStr Analysis of the Effect of Cementation Duration on the Effective Hardened Layer Thickness and Magnetic Parameter of 18ХГТ (18KhGT) Steel after Quenching
title_full_unstemmed Analysis of the Effect of Cementation Duration on the Effective Hardened Layer Thickness and Magnetic Parameter of 18ХГТ (18KhGT) Steel after Quenching
title_sort analysis of the effect of cementation duration on the effective hardened layer thickness and magnetic parameter of 18хгт (18khgt) steel after quenching
publisher National Academy of Sciences of Belarus, State Scientific Institution “The Joint Institute of Mechanical Engineering"
series Механика машин, механизмов и материалов
issn 1995-0470
2518-1475
publishDate 2020-09-01
description Highly stressed transmission parts of energy-saturated machines are made of steels subjected to carburization and subsequent hardening. A low-carbon steel product forms a strong, high-carbon surface layer with a soft and viscous core. An important parameter of the hardened layer is its effective thickness hэфф. The article studies the effect of the duration of the cementation process on hэфф of samples from 18ХГТ (18KhGT) steel used for the manufacture of gear wheels of highly loaded transmissions. The possibility of using a magnetic parameter for non-destructive testing hэфф was also investigated. The device “Magnetic Sorter MS-1” was used, which measures the gradient of the normal component of the remanent magnetization field above the point of contact of the magnet pole with the metal surface. To determine hэфф, interpolation of measurements of the distribution of microhardness HV over the layer thickness on manufactured microsections was used. HV microhardness values are converted to HRC hardness values according to the dependence recommended by the international standard. Studies have shown that hэфф of the cemented layer of 18ХГТ (18KhGT) steel after quenching linearly depends on the cementation time. There is a correlation between the hэфф of the samples studied and the readings of the MS-1 device. This is a prerequisite for the development of a non-destructive method for controlling the process of chemical heat treatment of gear wheels of transmissions of mobile machines.
topic surface hardening
cementation
hardness
effective thickness of the hardened layer
non-destructive testing
pole magnetization
url http://mmmm.by/en/readers-en/archive-room-en?layout=edit&id=1603
work_keys_str_mv AT sergeigsandomirski analysisoftheeffectofcementationdurationontheeffectivehardenedlayerthicknessandmagneticparameterof18hgt18khgtsteelafterquenching
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AT sergeiprudenko analysisoftheeffectofcementationdurationontheeffectivehardenedlayerthicknessandmagneticparameterof18hgt18khgtsteelafterquenching
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