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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National Academy of Sciences of Belarus, State Scientific Institution “The Joint Institute of Mechanical Engineering"
2020-09-01
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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 AT aleksandrlvalko analysisoftheeffectofcementationdurationontheeffectivehardenedlayerthicknessandmagneticparameterof18hgt18khgtsteelafterquenching AT sergeiprudenko analysisoftheeffectofcementationdurationontheeffectivehardenedlayerthicknessandmagneticparameterof18hgt18khgtsteelafterquenching |
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