Metal-arc spray re-manufacturing materials-process-durability studies

Re-manufactured components are expected to perform to exacting specifications of their brand new counterparts. This project investigates the effectiveness of the Twin Wire Arc Spray process, synonymous with the re-manufacturing industry. Machined surface-finish cast iron coupon specimens and grit...

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Main Author: Tan, Alexander Wei Long.
Other Authors: Pang Hock Lye, John
Format: Final Year Project
Language:English
Published: 2013
Subjects:
Online Access:http://hdl.handle.net/10356/53275
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-532752023-03-04T19:34:53Z Metal-arc spray re-manufacturing materials-process-durability studies Tan, Alexander Wei Long. Pang Hock Lye, John School of Mechanical and Aerospace Engineering DRNTU::Engineering Re-manufactured components are expected to perform to exacting specifications of their brand new counterparts. This project investigates the effectiveness of the Twin Wire Arc Spray process, synonymous with the re-manufacturing industry. Machined surface-finish cast iron coupon specimens and grit-blasted cast iron specimens were subjected to the Twin Wire Arc Spray process. These specimens were refined and subjected to fatigue testing. The Machined surface-finish cast iron coupon specimens exhibited de-lamination immediately after undergoing the Twin Wire Arc Spray process. For the grit-blasted cast iron specimens that had undergone the exact same process, de-lamination occurred only when the coating layer was increased beyond 1.5mm. The propensity for de-lamination to occur is ever-present regardless of surface preparation methods, and is highly detrimental to components. De-lamination of the coating from a substrate severely undermines the fatigue life of a component as reflected in this project. Grit-blasting a substrate prior to metal spraying can improve the adhesion strength at the coating-substrate interface thereby improving the fatigue life of the component, provided that de-lamination does not occur. Pre-heating and the incorporation of ridges and grooves onto the substrate can also reduce the likelihood of de-lamination Bachelor of Engineering (Mechanical Engineering) 2013-05-31T03:29:24Z 2013-05-31T03:29:24Z 2013 2013 Final Year Project (FYP) http://hdl.handle.net/10356/53275 en Nanyang Technological University 98 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering
spellingShingle DRNTU::Engineering
Tan, Alexander Wei Long.
Metal-arc spray re-manufacturing materials-process-durability studies
description Re-manufactured components are expected to perform to exacting specifications of their brand new counterparts. This project investigates the effectiveness of the Twin Wire Arc Spray process, synonymous with the re-manufacturing industry. Machined surface-finish cast iron coupon specimens and grit-blasted cast iron specimens were subjected to the Twin Wire Arc Spray process. These specimens were refined and subjected to fatigue testing. The Machined surface-finish cast iron coupon specimens exhibited de-lamination immediately after undergoing the Twin Wire Arc Spray process. For the grit-blasted cast iron specimens that had undergone the exact same process, de-lamination occurred only when the coating layer was increased beyond 1.5mm. The propensity for de-lamination to occur is ever-present regardless of surface preparation methods, and is highly detrimental to components. De-lamination of the coating from a substrate severely undermines the fatigue life of a component as reflected in this project. Grit-blasting a substrate prior to metal spraying can improve the adhesion strength at the coating-substrate interface thereby improving the fatigue life of the component, provided that de-lamination does not occur. Pre-heating and the incorporation of ridges and grooves onto the substrate can also reduce the likelihood of de-lamination
author2 Pang Hock Lye, John
author_facet Pang Hock Lye, John
Tan, Alexander Wei Long.
format Final Year Project
author Tan, Alexander Wei Long.
author_sort Tan, Alexander Wei Long.
title Metal-arc spray re-manufacturing materials-process-durability studies
title_short Metal-arc spray re-manufacturing materials-process-durability studies
title_full Metal-arc spray re-manufacturing materials-process-durability studies
title_fullStr Metal-arc spray re-manufacturing materials-process-durability studies
title_full_unstemmed Metal-arc spray re-manufacturing materials-process-durability studies
title_sort metal-arc spray re-manufacturing materials-process-durability studies
publishDate 2013
url http://hdl.handle.net/10356/53275
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