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Método de fabricación de imanes pulvimetalúrgicos

Resumen

Tipo:
Oferta Tecnológica
Referencia:
TOES20151014001
Publicado:
25/02/2016
Caducidad:
25/02/2017
Resumen:
Un equipo de investigación andaluz ha desarrollado un nuevo método de producción de imanes permanentes, principalmente aquellos que incluyen tierras raras en su composición. Este método sustituye al método convencional de prensado y sinterizado con una técnica de consolidación rápida basada en un proceso FAST (Field Assisted Sintering Technique), simplificando la fabricación de imanes y reduciendo los costes de producción. El equipo de investigación busca empresas y centros de investigación con el fin de establecer acuerdos de licencia, investigación o cooperación técnica.

Details

Tittle:
Method for manufacturing powder metallurgy magnets
Summary:
Andalusian research group has developed a new method for permanent magnets production, mainly those containing rare earths in their composition. It substitutes the conventional press+sinter method by a quick consolidation technique, based on a FAST (Field Assisted Sintering Technique) process, simplifying the magnet manufacturing and reducing the fabrication cost. They look for companies or research centers interested in license agreement, research cooperation agreement or technical cooperation
Description:
The research group is located in the south of Spain. Its main activities are focused on the following fields: nanomaterials, development of sintered materials from aluminium moulds for transport industry, modeling and use of the electrical resistance sintering, diagnosis and restoration of the cultural heritage and working risk prevention.

The main innovation of the described method is the way to consolidate the material in order to obtain the magnet. Field assisted sintering techniques, as electrical resistance sintering or electrical discharge consolidation/sintering, are techniques where the sintering process is carried out in a very quick way, even less than one second, therefore being possible not to use controlled atmospheres to avoid the material interaction with atmosphere. On the other hand, the technique allows obtaining magnets with the desired final geometry, the whole time of the process with the material in the same container.

Many electrical and electronic applications make use of permanent magnets, in many cases of small size, as those mainly aimed to produce with this manufacturing technique. Many sector are continuously using such devices in their products, and therefore, makers of such devices could be interested in the developed method.

The international market of permanet magnets is growing and is expected that it will generate around 14 billion euro by 2020 through their use in basic technological applications. Good examples are their use for transport (cars, bicycles, vans...), electrical appliances or for eolic turbines generators.

A good impact on the international market is envisaged since lower cost and higher quality during the production process will be achieved using this innovative production method.

They look for partners to sign a licence, research or technical cooperation agreement in order to bring the new technology to the permanent magnets market or collaborate in further developments and applications according to the requests of the clients. The specific way of collaboration will be agreed with the final client, depending on the mutual interest.
Advantages and Innovations:
The conventional method of press followed by furnace sintering is now substituted by an electrical consolidation method. This allows joining in a single step the previous pressing/sintering processes, and, due to the promptness of the process, the use of controlled atmospheres is not necessary. The steps of magnetization, and eventual thermal treatments, can be carried out in the same container, without being necessary to manipulate the product
Advantages: The simplification of the consolidation process, and the possibility of finishing the magnetization without being necessary to manipulate the product, makes this method economically attractive. The use of thin dies during the FAST process allows the magnetization coil to be very near the powder, improving results. On the other hand, the process can produce very small parts with the final or very near the final desired shape, with a clear advantage on the field requiring these small near-net-shaped parts.
Stage of Development:
Under development/lab tested
IPs:
Patent(s) applied for but not yet granted

Partner sought

Type and Role of Partner Sought:
Type of partner sougt: Companies and Research Centers

Specific area of activity: Permanent magnets, rare earth, electrical resistance sintering, electrical discharge consolidation/sintering

Type of cooperation sought:

- A licence agreement, in order to bring the technology to the market
-A research cooperation agreement, to collaborate in further development of this technology
-A technical cooperation agreement, to adapt the technology to specific needs

Client

Type and Size of Client:
R&D Institution
Already Engaged in Trans-National Cooperation:
No
Languages Spoken:
English
Spanish

Keywords

Technology Keywords:
01002006 Dispositivos / materiales magnéticos y superconductores
02002006 Endurecimiento, tratamiento térmico
02002012 Mezclado (polvo, etc), separación (clasificación, filtrado)
02002013 Moulding, injection moulding, sintering