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CENTRO NACIONAL DE ASISITENCIA TÉCNICA EN ELEMENTO FINITO, S.C.

CENTRO NACIONAL DE ASISITENCIA TÉCNICA EN ELEMENTO FINITO, S.C. M.C Humberto Peredo. Reduction cost of magnetic material in refrigerator seals. INDEX. Introduction Antecedents Fundamentals Actual Process of Barium Ferrite Improvement to actual process Expected savings (Barium Ferrite) ‏

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CENTRO NACIONAL DE ASISITENCIA TÉCNICA EN ELEMENTO FINITO, S.C.

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  1. CENTRO NACIONAL DE ASISITENCIA TÉCNICA EN ELEMENTO FINITO, S.C.

  2. M.C Humberto Peredo Reduction cost of magnetic material in refrigerator seals

  3. INDEX • Introduction • Antecedents • Fundamentals • Actual Process of Barium Ferrite • Improvement to actual process • Expected savings (Barium Ferrite)‏ • Implementation propose • Benefits • Conclusions • Appendices

  4. Introduction • Opportunity in refrigerators: improvement of the magnetic force reducing the material cost

  5. Introduction(cont.)‏ • Mexico is one of the principal raw magnetic material producer of BaCO3 & SrCO3 (Nuevo León y Coahuila)

  6. Antecedents • The magnetic Materials are relevant in many appliances (electric motors, microwave ovens, refrigerators, washers), automotive & aeronautic industry

  7. Antecedents (cont.)‏

  8. Antecedents(cont.)‏ • However the cost to produce strong field magnetic is too expensive (Sm o Nd)‏ Prices in Euros http://www.aimangz.com/web_programa/global/gtd_lista_subfamilia.php?familia=smco&subfamilia=barra

  9. Antecedents(cont.)‏ • Barium ferrite magnets are cheap, but the magnetic field is relatively weak. Prices in Euros http://www.aimangz.com/web_programa/global/gtd_lista_subfamilia.php?familia=smco&subfamilia=barra

  10. Fundaments • The origin of magnetism is due the electron spin B = μ(H + M) B = Magnetic Induction T Gauss H = Magnetic Field Am2 Oe M = Magnetic Saturation Am2 emu/cm3  = Material Permeability Henry/ m. *M o J = Intensity magnetization

  11. Fundamentos (cont.)‏ • The barium Ferrite has five sub lattices (12k,4f1,4f2,2a,2b ), and will contribute in the magnetic saturation according the next formula :

  12. Actual Process Barium Ferrite • Nowadays the Barium Ferrite is obtained by: • Ceramic • Co precipitation • SOL-GEL The highest Magnetic Saturation is about 0.475 T [Stäblein] Transforming process Raw Material Barium Ferrite

  13. Improvement in Actual process Barium Ferrite • Doing some changes to the actual barium ferrite process higher fields can be achieved (temperature, chemistry formula ) 0.69 T instead of 0.475 T Transforming process Raw Material Barium Ferrite B = μ(H (size grain) + M (ion substitution))

  14. Saving expected • Seal Material Cost 10 x 1,5 x 1000 mm = 0.49 € • A typical refrigerator of 22 ft3 requires 9 mts of Seal • Total Cost per unit = 4.41 €

  15. Implementation proposal • Patent • PYME • CONACYT • Implementation through actual production material supplier Registration patent Right properties Agreement Economical agreement Plant Implementation

  16. Benefits • Reduction of material costs. • Energy savings for the consumer • Reduction of seal material cost • Patent • State of the art technology

  17. Conclusions • According the results the magnetization saturation will increase by 47 %

  18. Appendices

  19. Characterization results • XRD

  20. Characterization results • Mössbauer Spectroscopy

  21. Characterization results • VSM

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