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Tertiärmetallurgie

Metallurgie
Spezielle Schmelz- und Umschmelzprozesse für einzigartige Stahleigenschaften

Tertiärmetallurgische Anlagen werden eingesetzt, wenn hochreine Stähle, Superlegierungen, Gusslegierungen und Nichteisenmetallen mit einzigartigen technologischen Eigenschaften gefragt sind. Diese strapazierfähigen Materialien kommen in anspruchsvollen High-Tech-Industrien zum Einsatz wie der Luft- und Raumfahrt-, der Stromerzeugungs- oder der Automobilbranche. Diese High-End-Technik ist alternativlos.

Vakuuminduktionsofen VIM

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Prozess

Keine Oxidation

Durch die sauerstofffreie Atmosphäre wird die Oxidation sauerstoffaffiner Elemente verhindert

Präzise Analyse

Sehr enge Analysetoleranzen (im PPM-Bereich)

Keine Begleitelemente

Entfernt unerwünschte Begleitelemente mit hohem Dampfdruck

Effektive Entgasung

Entfernt gelöste Gase (O, N, H) aus den Einsatzstoffen und der Endschmelze

Enger Temperaturbereich

Genaue Einstellung von Schmelztemperatur und Homogenität der Schmelze

Elektroden für das Umschmelzen

Gießen homogener Elektroden für Umschmelzprozess und Halbzeuge zur weiteren Verarbeitung

Ausgefeiltes Vakuumsystem

Zur präzisen Steuerung des Unterdruckes bis auf tiefste Niveaus

Technologie

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VACUUM INDUCTION MELTING - VIM PROCESS (copy 1)

Designed for a wide range of capacities

VIM is a powerful process applied to melt down selected scrap and refine the resulting liquid steel. The process involves casting ingots under vacuum, which further improves final-product quality.

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VACUUM CHAMBERS (copy 1)

VIM works with dedicated vacuum chambers for melting and casting. They are connected by launder and tundish units.
The crucible comes with a vacuum-tight electricity supply and can be exchanged easily using the advanced lifting system.

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Mechanical pump systems (copy 1)

It's a special advantage that the mechanical pump
system generates extra-strong vacuums.
There is also a charger that ensures clean material feeding under vacuum.

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Deslagging machines (copy 1)

Finally, an integrated deslagging machine removes the slag from the crucible.

Vacuum pumps (copy 1)

High-performance vacuum pumps from SMS Mevac are the heart of secondary metallurgical vacuum processes. For both recirculation or tank degassing processes, our vacuum pump technologies are tuned to your specific steel conditions and to your individ-ual plant and production requirements.

Our vacuum pump systems precisely control the rate of pressure reduction from atmospheric level to low vacuum pressure. During the various treatment steps the vacuum level is accurately controlled to match the system’s metallurgical needs.

In order to deliver optimum results high suction capacity, low energy consumption and optimal relia-bility are essential elements of our design.

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Vacuum induction melting & casting (copy 1)

Vacuum Induction Melting & Casting (VIM) is a highend process for melting down selected scrap and refining the resulting liquid steel in a powerful manner. The capability to perform ingot casting under vacuum conditions further improves the final product quality. SMS Mevac supplied a 8/18 t VIM unit to a customer in the UK. The plant is to be commissioned in 2015. VIM features dedicated vacuum chambers for melting and casting connected by launder and tundish. The crucible has vacuum-tight electrical power supply and can be exchanged easily via advanced lifting system. The mechanical pump system generates extra-deep vacuum. A charger ensures clean material addition under vacuum conditions. Direct slag removal is enabled by integrated deslagging machine.

Metallurgical functions (copy 1)

  • “Clean” inductive heat transfer
  • Vacuum conditions of < 0.05 mbar
  • Massive degassing of steel
  • No influence of ambient air (O2)
  • Evaporation of tramp elements
  • Narrow chemical steel analysis (in ppm range)
  • Precise setting of temperature and excellent homogeneity of melt
  • Vacuum casting of electrodes for remelting and semis for forging/rolling
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ESR and VAR X-EED® (copy 1)

X-eed® is the brand name of the overall SMS Mevac portfolio, expressing our continuous endeavours in development of enhanced technologies for the benefit of our worldwide customers.
X-eed® represents our pledge to meet your individual needs by means of innovative solutions, process know-how and selection of the most appropriate production routes.

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Common feature of remelting processes are the melt-down of a metal electrode, the metallurgical treatment of the liquid phase and the subsequent uniquely fast solidification an ingot. The ingots produced feature superior material properties as:
 

  • Highest cleanliness (purity)
  • No macro segregation
  • Extremely homogenous structure of produced ingot for excellent material properties
  • No hydrogen flakes
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Electro Slag Remelting (copy 1)

These products represent the top end of technological properties in metals.

Features

  • Melt-down in liquid slag created by resistance heating
  • Inert atmosphere
  • Lowest sulfur content and excellent cleanliness
  • High yield
  • Ingot diameter from 300 to 1600 mm
  • Ingot weight from 2 to 160 t

 

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Vacuum Arc Remelting (copy 1)

These products represent the top end of technological properties in metals.

Features

  • Melt-down by electric arc under vacuum of 0.004 mbar
  • Evaporation of tramp elements
  • Utmost degassing
  • Excellent cleanliness
  • No risk of freckle formation
  • Extra-high accuracy of final chemistry
  • Ingot diameter from 300 to 1000 mm
  • Ingot weight from 1 to 30 t

 

Ausgewählte Referenzen

Ansprechpartner

SMSgroup Luven, Michael

Michael Luven

SMS Mevac GmbH
Head of Sales & Project Planning
Eduard-Schloemann-Str. 4
40237 Düsseldorf
Germany

Telefon : +49 211 8818 164
Fax : +49 211 8818 264

SMSgroup Demirci, Cihangir

Cihangir Demirci

SMS Mevac GmbH
Deputy General Manager Tertiary Metallurgy
Eduard-Schloemann-Str. 4
40237 Düsseldorf
Germany

Telefon : +49 211 8818 181
Fax : +49 211 8818 773