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Chapas delgadas de acero inoxidable austenítico CrMnNi

Resumen

Tipo:
Oferta Tecnológica
Referencia:
TODE20190924001
Publicado:
13/11/2019
Caducidad:
13/11/2020
Resumen:
Una universidad alemana ha desarrollado un proceso de producción de chapas y tiras, en particular chapas finas de acero inoxidable austenítico CrMnNi a escala industrial. La sustitución parcial de níquel por manganeso y nitrógeno (acero X3Cr17Mn8Ni4MoN) da como resultado un acero muy moldeable en frío de alta resistencia. Este proceso permite ahorrar costes y materiales si se compara con los procesos actuales. El acero austenítico tiene un efecto TRIP/TWIP a una temperatura superior a la ambiental. Además presenta un estiramiento pronunciado en el rango de temperatura de 40 ºC a 150 ºC con un aumento simultáneo de la fuerza de tracción. Las chapas delgadas están indicadas para la producción de intercambiadores de calor y componentes sometidos a la corrosión. La universidad busca socios con el fin de establecer acuerdos de licencia o cooperación técnica.

Details

Tittle:
Thin sheets of CrMnNi austenitic stainless steel
Summary:
A German university has invented a process for the production of sheets and strips, in particular thin sheets from CrMnNi austenitic stainless steel on an industrial scale, saving costs and material compared to existing processes. Thin sheets are suitable for the production of heat exchangers and other corrosively stressed components.
Sought-after partners are those, which are interested in a licensing agreement or a technical cooperation agreement.
Description:
A university in Germany has developed a manufacturing process for sheets and strips, but especially thin sheet, which has significant advantages over existing methods.

The partial substitution of nickel by manganese and nitrogen (X3Cr17Mn8Ni4MoN steel) results in a highly cold-formable steel with increased strength. This metastable austenitic steel has a pronounced TRIP/TWIP effect at and above room temperature. Furthermore, this steel exhibits an anomaly pronounced elongation in the temperature range from 40 °C to 150 °C with a simultaneous increase in tensile strength.

TRIP:
Transformation-induced plasticity
Austenite transforms into a- martensite induced by deformation during cold forming.

TWIP:
Twinning induced plasticity
Twinning and the formation of e-martensite during cold forming.

The reduction in the proportion of nickel leads to a significant cost savings while lower material consumption.

The university is searching for industry users of the patent that have an interest in licensing the existing IP (intellectual property). Besides the licensing, the technology provider also provides further technical support for the implementation of the knowledge within the institution.

Furthermore, potential users are sought which will test the steel in their environment under a technical cooperation agreement.
Advantages and Innovations:
The economic advantage over other stainless steels is found in the resource efficiency. The saving of alloy costs is due to the higher than 50% reduced use of nickel compared to steel 1.4301 or 1.4404. The improved cold forming properties make it possible to reduce the number of cold forming stages in the production of thin sheets and foils up to 13-Y-micro;m. The higher strength of the material provides a reduction of the material usage, making lightweight components even thinner and lighter. The corrosion resistance of CrMnNiN steel are improved with regard to pitting corrosion.
Stage of Development:
Available for demonstration
IPs:
Patents granted

Partner sought

Type and Role of Partner Sought:
The university searches industrial partners, that have expertise in melting, as well as hot and cold forming in order to carry out an IP transfer. Besides, potential users of the superior steel are searched that are willing to test the steel within their environment.

Client

Type and Size of Client:
University
Already Engaged in Trans-National Cooperation:
Si
Languages Spoken:
English
German

Keywords

Technology Keywords:
02007002 Building materials
02002005 Forming (rolling, forging, pressing, drawing)
02007008 Hierro y acero, estructuras metálicas
02007019 Lightweight materials
02007015 Properties of Materials, Corrosion/Degradation