Powder content in powder extrusion moulding of tool steel: Dimensional stability, shrinkage and hardness

Joamin Gonzalez-Gutierrez; Yvonne Thompson; David Handl; Santiago Cano Cano; Stephan Schuschnigg; Peter Felfer; Christian Kukla; Clemens Holzer; Carlo Burkhardt

doi:https://doi.org/10.1016/j.matlet.2020.128909

Powder content in powder extrusion moulding of tool steel: Dimensional stability, shrinkage and hardness

Joamin Gonzalez-Gutierrez, Yvonne Thompson, David Handl, Santiago Cano Cano, Stephan Schuschnigg, Peter Felfer, Christian Kukla, Clemens Holzer, Carlo Burkhardt

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Begutachtung

3 Zitate (Scopus)

Abstract

Powder extrusion moulding (PEM) is a versatile and cost-effective technology for producing bi-dimensional shapes, (e.g. tubes and profiles) from metals, ceramics and cermets. PEM quality is affected by powder content; therefore, three highly-filled polymeric compounds containing 50, 55, 60 vol% tool steel powder were prepared and extruded to profiles. Extruded parts were debound in cyclohexane and sintered in forming gas (Ar + 5% H ₂) to obtain dense, sintered parts. The dimensional stability, the shrinkage and the hardness were measured. Minimum shrinkage and higher dimensional stability were obtained when the powder content was the highest (60 vol%). Specimens with 50 vol% powder had the highest hardness due to the initial higher binder content and resulting carbon content.

Originalsprache	Englisch
Aufsatznummer	128909
Seitenumfang	5
Fachzeitschrift	Materials letters
Jahrgang	283
Ausgabenummer	January 2021
DOIs	https://doi.org/10.1016/j.matlet.2020.128909
Publikationsstatus	Veröffentlicht - 15 Jan. 2021

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https://doi.org/10.1016/j.matlet.2020.128909

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title = "Powder content in powder extrusion moulding of tool steel: Dimensional stability, shrinkage and hardness",

abstract = "Powder extrusion moulding (PEM) is a versatile and cost-effective technology for producing bi-dimensional shapes, (e.g. tubes and profiles) from metals, ceramics and cermets. PEM quality is affected by powder content; therefore, three highly-filled polymeric compounds containing 50, 55, 60 vol% tool steel powder were prepared and extruded to profiles. Extruded parts were debound in cyclohexane and sintered in forming gas (Ar + 5% H 2) to obtain dense, sintered parts. The dimensional stability, the shrinkage and the hardness were measured. Minimum shrinkage and higher dimensional stability were obtained when the powder content was the highest (60 vol%). Specimens with 50 vol% powder had the highest hardness due to the initial higher binder content and resulting carbon content. ",

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T2 - Dimensional stability, shrinkage and hardness

AU - Gonzalez-Gutierrez, Joamin

AU - Thompson, Yvonne

AU - Handl, David

AU - Cano Cano, Santiago

AU - Schuschnigg, Stephan

AU - Felfer, Peter

AU - Kukla, Christian

AU - Holzer, Clemens

AU - Burkhardt, Carlo

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KW - Powder extrusion moulding

KW - Steel

KW - highly-filled polymer

KW - Debinding

KW - Sintering

KW - Profile extrusion

KW - Metals and alloys

KW - Powder technology

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