Werkzeugstähle

Wilmes, Siegfried; Becker, Hans-Josef von; Krumpholz, Rolf; Verderber, Walter

doi:10.1007/978-3-642-82208-7_11

Cited by 2 publications

(1 citation statement)

References 32 publications

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“…This effect can be deduced from the drop of hardness to a level even below values of the thermally unaffected cold deformed substrate, which is represented by zone C. In the transition between zone Band C remarkably a local increase of hardness leading to a secondary maximum could be observed for the sample under investigation. This effect can probably be explained by a secondary hardening effect, which is known for some tool steels occurring during tempering by precipitation of, for example, chromium carbides as suspected in our case with the given small amount of chromium [8]. work rolls during subsequent cold rolling.…”

Section: Thermo-mechanically Tailored Strips and Profilessupporting

confidence: 52%

Innovative Flexible Metal Forming Processes based on Hybrid Thermo‐Mechanical Interaction

Steinhoff

Weidig

Scholtes

et al. 2005

steel research international

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A new approach towards functional gradation of structural parts is presented. This approach is based on the utilization of locally varying thermo‐mechanically coupled effects applied to different initial workpiece geometries. The possible degree of freedom for the gradation of material properties and geometrical shape for sheet metal forming applications as well as for parts produced by bulk metal forming is characterized by the results of metallographic investigations, by mechanical testing and by an indication of the remaining residual stress state. On the basis of experimental results and process simulations, it could be revealed that the ability to exactly control the dynamic microstructural evolution by thermal and mechanical process parameters combined with predefined material design parameters constitutes a key towards the adjustment of flexible material property profiles even for parts with complex three‐dimensional geometry. Beyond that, the integrative aspect of thermal and mechanical treatment already implies the high level of obtainable efficiency resulting from shortening of process chains. However, it is not only the ability to integrate shape generation and property gradation, but also the automatically included positive effect of tailoring process behaviour by a gradation of formability finally allowing to improve process efficiency e.g. by a reduction of forming steps or reduction of (local) tool load.

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Section: Thermo-mechanically Tailored Strips and Profilessupporting

confidence: 52%

Innovative Flexible Metal Forming Processes based on Hybrid Thermo‐Mechanical Interaction

Steinhoff

Weidig

Scholtes

et al. 2005

steel research international

View full text Add to dashboard Cite

show abstract

Sprühkompaktierte Hochleistungs-Werkzeugstähle∗

Piotrowiak¹,

Schüler²,

Schruff³

et al. 2004

HTM Journal of Heat Treatment and Materials

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Kurzfassung Das Sprühkompaktieren beinhaltet zwei Hauptprozessschritte: das Verdüsen einer metallischen Schmelze und das Kompaktieren der erzeugten Schmelztropfen zu Halbzeug und zu endabmessungsnahen Fertigprodukten. Das Sprühkompaktieren gestattet die Herstellung metallischer Feststoffe von höchster Homogeni-tät mit äußerst feinkörnigem Gefüge. Nach Jahren intensiver Forschung und Entwicklung kann das Sprühkompaktieren heute zur Produktion von Hochleistungs-Werkzeugstählen im industriellen Maßstab verwendet werden. Der nachfolgende Bericht stellt zwei neue sprühkompaktierte Werkzeugstähle vor, ESP® 23 und ESP® 32, beschreibt ihre Eigenschaften und gibt einen Überblick über die Ergebnisse industrieller Anwendungen.

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Werkzeugstähle

Cited by 2 publications

References 32 publications

Innovative Flexible Metal Forming Processes based on Hybrid Thermo‐Mechanical Interaction

Innovative Flexible Metal Forming Processes based on Hybrid Thermo‐Mechanical Interaction

Sprühkompaktierte Hochleistungs-Werkzeugstähle∗

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