Abstracts Book - IMRC 2018

• SE5-O011
THERMAL TREATMENTS IN STEELS USING SOLAR ENERGY
THROUGH FRESNEL LENSES
Maria Luisa Mendoza Lopez 1 , José de Jesús Pérez Bueno 2 , Maria Guadalupe Vázquez Orduña 1 ,
Brenda Gabriela Floran Mendoza 1 , Ernesto Sanjuanero Campos 1 , Joaquín Pérez Meneses 1 ,
Martha Elva Pérez Ramos 1
1 Instituto Tecnológico de Querétaro, Metal Mecánica, Mexico. 2 Centro de Investigación y
Desarrollo Tecnológico en Electroquímica, Dirección de Ciencia, Mexico.
The traditional methods of steel thermal treatments make use of equipment
that reaches high temperatures by heating with resistances, induction, natural
gas or a mixture of them. In addition, if treatment is required in a specific area
of the material, it is required to section the piece or introduce the piece to the
oven and heat the entire piece. The use of Fresnel lenses allows concentrating
solar energy in an area (focus) of variable size. In this work, Fresnel lenses
manufactured with PMMA were used, which had a lens area of 0.78 m 2 with
variable heat treatment points in the range 1 - 12 cm 2 according to the
temperature required for the specific thermal treatment. AISI alloys 1045 and
4140 were used considering that the carbon content allows a hardening of the
alloy when the austenitizing temperature is exceeded and cooled at different
speeds. The pieces were evaluated before the test, with heat treatment in muffle
and with thermal treatment with Fresnel lenses. Metallographic
characterization, micro-hardness, and XRD were carried out identifying the
phases and correlating them to the material hardness.
Acknowledgment:
Thanks to TecNM-Instituto Tecnológico de Querétaro for the finantial support to
the project Aplicación de lentes Fresnel en el tratamiento de aleaciones
metálicas por calentamiento solar pulsado by the PIII-ITQ-2017.
Keywords: Fresnel, thermal treatment, solar energy
Presenting authors email: jjpbueno@gmail.com