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Av. Del Retablo No. 118-B Col. La Era Querétaro, Qro. C.P. 76150
Tel. (442) 214-4767 Email: contacto@centronacionalfem.com
CENTRO NACIONAL DE ASISITENCIA TÉCNICA EN ELEMENTO FINITO, S.C.
Av. Del Retablo No. 118-B Col. La Era Querétaro, Qro. C.P. 76150
Tel. (442) 214-4767 Email: contacto@centronacionalfem.com
Reduction cost of magnetic material in refrigerator seals
M.C Humberto Peredo
Av. Del Retablo No. 118-B Col. La Era Querétaro, Qro. C.P. 76150
Tel. (442) 214-4767 Email: contacto@centronacionalfem.com
INDEX• Introduction• Antecedents• Fundamentals• Actual Process of Barium Ferrite• Improvement to actual process• Expected savings (Barium Ferrite)• Implementation propose• Benefits• Conclusions• Appendices
Av. Del Retablo No. 118-B Col. La Era Querétaro, Qro. C.P. 76150
Tel. (442) 214-4767 Email: contacto@centronacionalfem.com
Introduction
• Opportunity in refrigerators: improvement of the magnetic force reducing the material cost
Av. Del Retablo No. 118-B Col. La Era Querétaro, Qro. C.P. 76150
Tel. (442) 214-4767 Email: contacto@centronacionalfem.com
Introduction(cont.)• Mexico is one of the principal raw magnetic
material producer of BaCO3 & SrCO3 (Nuevo León y Coahuila)
Av. Del Retablo No. 118-B Col. La Era Querétaro, Qro. C.P. 76150
Tel. (442) 214-4767 Email: contacto@centronacionalfem.com
Antecedents
• The magnetic Materials are relevant in many appliances (electric motors, microwave ovens, refrigerators, washers), automotive & aeronautic industry
Av. Del Retablo No. 118-B Col. La Era Querétaro, Qro. C.P. 76150
Tel. (442) 214-4767 Email: contacto@centronacionalfem.com
Antecedents (cont.)
Av. Del Retablo No. 118-B Col. La Era Querétaro, Qro. C.P. 76150
Tel. (442) 214-4767 Email: contacto@centronacionalfem.com
Antecedents(cont.)
• However the cost to produce strong field magnetic is too expensive (Sm o Nd)
http://www.aimangz.com/web_programa/global/gtd_lista_subfamilia.php?familia=smco&subfamilia=barra
Prices in Euros
Av. Del Retablo No. 118-B Col. La Era Querétaro, Qro. C.P. 76150
Tel. (442) 214-4767 Email: contacto@centronacionalfem.com
Antecedents(cont.)
• Barium ferrite magnets are cheap, but the magnetic field is relatively weak.
http://www.aimangz.com/web_programa/global/gtd_lista_subfamilia.php?familia=smco&subfamilia=barra
Prices in Euros
Av. Del Retablo No. 118-B Col. La Era Querétaro, Qro. C.P. 76150
Tel. (442) 214-4767 Email: contacto@centronacionalfem.com
Fundaments
• The origin of magnetism is due the electron spin
B = μ(H + M) B = Magnetic Induction T Gauss
H = Magnetic Field Am2 OeM = Magnetic Saturation Am2 emu/cm3
= Material Permeability Henry/ m.
*M o J = Intensity magnetization
Av. Del Retablo No. 118-B Col. La Era Querétaro, Qro. C.P. 76150
Tel. (442) 214-4767 Email: contacto@centronacionalfem.com
• The barium Ferrite has five sub lattices (12k,4f1,4f2,2a,2b ), and will contribute in the magnetic saturation according the next formula :
Fundamentos (cont.)
Av. Del Retablo No. 118-B Col. La Era Querétaro, Qro. C.P. 76150
Tel. (442) 214-4767 Email: contacto@centronacionalfem.com
Actual Process Barium Ferrite
• Nowadays the Barium Ferrite is obtained by:
1. Ceramic
2. Co precipitation
3. SOL-GEL
The highest Magnetic Saturation is about 0.475 T [Stäblein]
Transforming process Barium FerriteRawMaterial
Av. Del Retablo No. 118-B Col. La Era Querétaro, Qro. C.P. 76150
Tel. (442) 214-4767 Email: contacto@centronacionalfem.com
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 Barium FerriteRaw Material
B = μ(H (size grain) + M (ion substitution) )
Av. Del Retablo No. 118-B Col. La Era Querétaro, Qro. C.P. 76150
Tel. (442) 214-4767 Email: contacto@centronacionalfem.com
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 €
Av. Del Retablo No. 118-B Col. La Era Querétaro, Qro. C.P. 76150
Tel. (442) 214-4767 Email: contacto@centronacionalfem.com
Implementation proposal
• Patent
• PYME
• CONACYT
• Implementation through actual production material supplier
Registration patent
Right properties
Agreement
Plant Implementation
Economical agreement
Av. Del Retablo No. 118-B Col. La Era Querétaro, Qro. C.P. 76150
Tel. (442) 214-4767 Email: contacto@centronacionalfem.com
Benefits
• Reduction of material costs.
• Energy savings for the consumer
• Reduction of seal material cost
• Patent
• State of the art technology
Av. Del Retablo No. 118-B Col. La Era Querétaro, Qro. C.P. 76150
Tel. (442) 214-4767 Email: contacto@centronacionalfem.com
Conclusions
• According the results the magnetization saturation will increase by 47 %
Av. Del Retablo No. 118-B Col. La Era Querétaro, Qro. C.P. 76150
Tel. (442) 214-4767 Email: contacto@centronacionalfem.com
Appendices
Av. Del Retablo No. 118-B Col. La Era Querétaro, Qro. C.P. 76150
Tel. (442) 214-4767 Email: contacto@centronacionalfem.com
Characterization results
• XRD
Av. Del Retablo No. 118-B Col. La Era Querétaro, Qro. C.P. 76150
Tel. (442) 214-4767 Email: contacto@centronacionalfem.com
Characterization results
• Mössbauer Spectroscopy
Av. Del Retablo No. 118-B Col. La Era Querétaro, Qro. C.P. 76150
Tel. (442) 214-4767 Email: contacto@centronacionalfem.com
Characterization results
• VSM
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