Development of a Novel Resistance Heating System for Microforming Using Surface-Modified Dies and Evaluation of Its Heating Property

For this study, a novel resistance heating system for microforming was developed using surfaces of forming dies as heating resources. The electrical resistance of the die surfaces was designed and the hard-coating material AlCrSiN was selected to coat the die surfaces for heating. To clarify the eff...

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Main Authors: Ming Yang, Tetsuhide Shimizu
Format: Article
Language:English
Published: MDPI AG 2019-04-01
Series:Metals
Subjects:
Online Access:https://www.mdpi.com/2075-4701/9/4/440
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author Ming Yang
Tetsuhide Shimizu
author_facet Ming Yang
Tetsuhide Shimizu
author_sort Ming Yang
collection DOAJ
description For this study, a novel resistance heating system for microforming was developed using surfaces of forming dies as heating resources. The electrical resistance of the die surfaces was designed and the hard-coating material AlCrSiN was selected to coat the die surfaces for heating. To clarify the effects of the thickness and modified surfaces on heating efficiency, the temperature and stress reduction were evaluated in a micro-compression test using dies coated with 0.5 and 1 μm AlCrSiN films. Furthermore, the formability was also demonstrated using 1 μm thick AlCrSiN-coated tools in a microforging test. By applying surface-modified dies to the forming processes, we found that not only was the heating efficiency improved, but also the dependence of heating on the product’s shape and the material’s electrical properties was reduced.
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spelling doaj.art-98920cb4256f43d985c81d16210723152022-12-21T18:56:27ZengMDPI AGMetals2075-47012019-04-019444010.3390/met9040440met9040440Development of a Novel Resistance Heating System for Microforming Using Surface-Modified Dies and Evaluation of Its Heating PropertyMing Yang0Tetsuhide Shimizu1Tokyo Metropolitan University, Tokyo 191-0065, JapanTokyo Metropolitan University, Tokyo 191-0065, JapanFor this study, a novel resistance heating system for microforming was developed using surfaces of forming dies as heating resources. The electrical resistance of the die surfaces was designed and the hard-coating material AlCrSiN was selected to coat the die surfaces for heating. To clarify the effects of the thickness and modified surfaces on heating efficiency, the temperature and stress reduction were evaluated in a micro-compression test using dies coated with 0.5 and 1 μm AlCrSiN films. Furthermore, the formability was also demonstrated using 1 μm thick AlCrSiN-coated tools in a microforging test. By applying surface-modified dies to the forming processes, we found that not only was the heating efficiency improved, but also the dependence of heating on the product’s shape and the material’s electrical properties was reduced.https://www.mdpi.com/2075-4701/9/4/440resistance heating systemsurface modificationmicroforming
spellingShingle Ming Yang
Tetsuhide Shimizu
Development of a Novel Resistance Heating System for Microforming Using Surface-Modified Dies and Evaluation of Its Heating Property
Metals
resistance heating system
surface modification
microforming
title Development of a Novel Resistance Heating System for Microforming Using Surface-Modified Dies and Evaluation of Its Heating Property
title_full Development of a Novel Resistance Heating System for Microforming Using Surface-Modified Dies and Evaluation of Its Heating Property
title_fullStr Development of a Novel Resistance Heating System for Microforming Using Surface-Modified Dies and Evaluation of Its Heating Property
title_full_unstemmed Development of a Novel Resistance Heating System for Microforming Using Surface-Modified Dies and Evaluation of Its Heating Property
title_short Development of a Novel Resistance Heating System for Microforming Using Surface-Modified Dies and Evaluation of Its Heating Property
title_sort development of a novel resistance heating system for microforming using surface modified dies and evaluation of its heating property
topic resistance heating system
surface modification
microforming
url https://www.mdpi.com/2075-4701/9/4/440
work_keys_str_mv AT mingyang developmentofanovelresistanceheatingsystemformicroformingusingsurfacemodifieddiesandevaluationofitsheatingproperty
AT tetsuhideshimizu developmentofanovelresistanceheatingsystemformicroformingusingsurfacemodifieddiesandevaluationofitsheatingproperty