Variation in particle size fraction to optimize metal injection molding of water atomized 17–4PH stainless steel feedstocks

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F20%3A63526119" target="_blank" >RIV/70883521:28110/20:63526119 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/70883521:28610/20:63526119

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0032591020303442" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0032591020303442</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.powtec.2020.04.058" target="_blank" >10.1016/j.powtec.2020.04.058</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Variation in particle size fraction to optimize metal injection molding of water atomized 17–4PH stainless steel feedstocks

Popis výsledku v původním jazyce

This work reports on an essential effect of rather slight size differences in water atomized 17–4PH stainless steel powder on resulting microstructure and dimensional tolerances of metal injection molding (MIM) parts. The powders of round to irregular shapes prepared in three different powder volume fractions were admixed into the paraffin wax/HDPE (50/50) binder in a double sigma mixer. After determination of critical solid loading, the rheological, molding, and sintering performance of 66 vol% solid loading feedstocks was tested on a complex-shaped MIM component. The slight differences in size fractions are reflected also in the powder shape, which was quantified through sphericity factor and aspect ratio by dynamic image analysis. The results indicate an increase in viscosity, flow instability and injection pressure, lower sintered density with enhanced dimensional deformations for feedstocks having higher amount of coarser (10–20) μm fraction accompanied with higher shape irregularity determined from sphericity factor and aspect ratio.

Název v anglickém jazyce

Variation in particle size fraction to optimize metal injection molding of water atomized 17–4PH stainless steel feedstocks

Popis výsledku anglicky

This work reports on an essential effect of rather slight size differences in water atomized 17–4PH stainless steel powder on resulting microstructure and dimensional tolerances of metal injection molding (MIM) parts. The powders of round to irregular shapes prepared in three different powder volume fractions were admixed into the paraffin wax/HDPE (50/50) binder in a double sigma mixer. After determination of critical solid loading, the rheological, molding, and sintering performance of 66 vol% solid loading feedstocks was tested on a complex-shaped MIM component. The slight differences in size fractions are reflected also in the powder shape, which was quantified through sphericity factor and aspect ratio by dynamic image analysis. The results indicate an increase in viscosity, flow instability and injection pressure, lower sintered density with enhanced dimensional deformations for feedstocks having higher amount of coarser (10–20) μm fraction accompanied with higher shape irregularity determined from sphericity factor and aspect ratio.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Projekt

<a href="/cs/project/LO1504" target="_blank" >LO1504: Centrum polymerních systémů plus</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Powder Technology

ISSN

0032-5910

e-ISSN

—

Svazek periodika

368

Číslo periodika v rámci svazku

Neuveden

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

7

Strana od-do

130-136

Kód UT WoS článku

000540731900012

EID výsledku v databázi Scopus

2-s2.0-85083874870