Study of pore structure evolution during debinding process / Khirman Khalid

Study of pore structure evolution during debinding process / Khirman Khalid

Metal Injection Molding (MIM) is an advanced metallurgical technology that integrates the shape-making capability of plastic injection molding with the material flexibility of powder metallurgy. The uniqueness of MIM has enhanced the ability to manufacture high integrity metal parts in complex shape...

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Main Author: Khalid, Khirman
Format: Thesis
Language:English
Published: 2004
Online Access:https://ir.uitm.edu.my/id/eprint/73824/1/73824.pdf
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spelling my-uitm-ir.738242024-05-29T09:31:41Z Study of pore structure evolution during debinding process / Khirman Khalid 2004 Khalid, Khirman Metal Injection Molding (MIM) is an advanced metallurgical technology that integrates the shape-making capability of plastic injection molding with the material flexibility of powder metallurgy. The uniqueness of MIM has enhanced the ability to manufacture high integrity metal parts in complex shapes of precise dimensions. The cost also effective for mass production compared with other production methods. This process consists of several steps that are mixing to produce a homogeneous feedstock, injection molding, debinding and sintering. Each step plays a vital role in order to achieve high quality final product. Study of pore structure evolution during debinding process is important especially to produce good dimensional accuracy and defect free product. Some debinding parameters such as initial temperature, maximum temperature and heating rate influences the pore structure evolution in debinded part. In this study, the mold injected feedstock or green body which consists of carbonyl iron powder having a mean particle size of 4 urn and spherical shape and ready made known as Hostamont EK583 were used. Two-stages debinding process and some debinding parameters as mentioned above were applied during the investigation. The scanning electron micrograph was used in order to clearly monitor the morphologies of the fractured surface of debound parts. Results shows that the pore structure start to develop from the surface of the fractured surface during solvent debinding process. The wider pore structure developed during thermal debinding process and this time most of the binder content had completely removed. In addition, during thermal debinding process, the binder removal occurred in three phenomena and these phenomena had been found during TGA analysis. These phenomena strongly influence the pore structure evolution and finally the final dimension of product. The heating rate during thermal debinding process also influences the ppre structure evolution and the best heating rate found is 0.3 °C / min. The heating rate provided the best surface finish and the pore produced also more uniform. 2004 Thesis https://ir.uitm.edu.my/id/eprint/73824/ https://ir.uitm.edu.my/id/eprint/73824/1/73824.pdf text en public degree Universiti Teknologi MARA (UiTM) Faculty of Mechanical Engineering Ismail, Muhammad Hussain
institution Universiti Teknologi MARA
collection UiTM Institutional Repository
language English
advisor Ismail, Muhammad Hussain
description Metal Injection Molding (MIM) is an advanced metallurgical technology that integrates the shape-making capability of plastic injection molding with the material flexibility of powder metallurgy. The uniqueness of MIM has enhanced the ability to manufacture high integrity metal parts in complex shapes of precise dimensions. The cost also effective for mass production compared with other production methods. This process consists of several steps that are mixing to produce a homogeneous feedstock, injection molding, debinding and sintering. Each step plays a vital role in order to achieve high quality final product. Study of pore structure evolution during debinding process is important especially to produce good dimensional accuracy and defect free product. Some debinding parameters such as initial temperature, maximum temperature and heating rate influences the pore structure evolution in debinded part. In this study, the mold injected feedstock or green body which consists of carbonyl iron powder having a mean particle size of 4 urn and spherical shape and ready made known as Hostamont EK583 were used. Two-stages debinding process and some debinding parameters as mentioned above were applied during the investigation. The scanning electron micrograph was used in order to clearly monitor the morphologies of the fractured surface of debound parts. Results shows that the pore structure start to develop from the surface of the fractured surface during solvent debinding process. The wider pore structure developed during thermal debinding process and this time most of the binder content had completely removed. In addition, during thermal debinding process, the binder removal occurred in three phenomena and these phenomena had been found during TGA analysis. These phenomena strongly influence the pore structure evolution and finally the final dimension of product. The heating rate during thermal debinding process also influences the ppre structure evolution and the best heating rate found is 0.3 °C / min. The heating rate provided the best surface finish and the pore produced also more uniform.
format Thesis
qualification_level Bachelor degree
author Khalid, Khirman
spellingShingle Khalid, Khirman
Study of pore structure evolution during debinding process / Khirman Khalid
author_facet Khalid, Khirman
author_sort Khalid, Khirman
title Study of pore structure evolution during debinding process / Khirman Khalid
title_short Study of pore structure evolution during debinding process / Khirman Khalid
title_full Study of pore structure evolution during debinding process / Khirman Khalid
title_fullStr Study of pore structure evolution during debinding process / Khirman Khalid
title_full_unstemmed Study of pore structure evolution during debinding process / Khirman Khalid
title_sort study of pore structure evolution during debinding process / khirman khalid
granting_institution Universiti Teknologi MARA (UiTM)
granting_department Faculty of Mechanical Engineering
publishDate 2004
url https://ir.uitm.edu.my/id/eprint/73824/1/73824.pdf
_version_ 1804889681460985856

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