| Tipo de Docum.: |
documento de conferencia |
| Título: |
Diseño de un ensayo de aptitud |
| Autor: |
Mastromónaco, G.;
Gattucci, L.;
Forastieri, S.;
Delbón, M.;
Kornblit, F.;
Galli, Ariel;
Rossi, N.;
Berho, F.;
Labollita, H.;
Othaz Brida, A.;
Romero, G.
|
| Reunión: |
Instituto Nacional de Tecnología Industrial. INTI. Argentina, TecnoINTI edición 2022. Jornadas de Desarrollo Tecnológico e Innovación, 14, Buenos Aires. AR, 2022 |
| Idioma: |
spa |
| Datos de Edición: |
Buenos Aires. AR. INTI. 2022. |
| Pág./Vol.: |
pag. varias: tbls. |
| Unidad técnica: |
INTI-Departamento de Calidad en las Mediciones;
INTI-Departamento de Metrología en Ambiente y Salud;
INTI-Dirección Técnica de Servicios Analíticos;
INTI-Departamento de Compuestos y Productos Inorgánicos.
|
| Descriptores: |
Fósforo;
Nitrógeno;
Nutrientes;
Agua;
Cuencas fluviales;
Ensayos de laboratorio;
Mediciones;
Ensayo de aptitud;
Valor de referencia
|
 Ver Documento
|
Trabajo de INTI |
| Tipo de Docum.: |
artículo |
| Título: |
Sliding abrasive wear when combining WEDM conditions and polishing treatment on H13 disks over 1045 carbon steel pins |
| Autor: |
Sánchez Egea, Antonio J.;
Martynenko, Vitaliy;
Simoncelli, Alejandro;
Serrancoli, Gil;
Martínez Krahmer, Daniel
|
| Título Ser./Col.: |
The International Journal of Advanced Manufacturing Technology, 116(5-6) |
| Idioma: |
eng |
| Datos de Edición: |
s.l. Springer. 2021. |
| Pág./Vol.: |
11p. |
| Unidad técnica: |
INTI-Mecánica.
|
| Descriptores: |
Superficies;
Latón;
Aceros;
Nitruración;
Nitrógeno;
Plasma;
Calidad;
Desgaste;
Fricción
|
| Resumen: |
Forging dies are crucial in forging to manufacture accurate workpieces. These dies are generally made of AISI H steel series and hardened and tempered medium carbon alloy steel. Dies are processed by using high-speed milling + polishing or electrical discharge machining + polishing. The surface quality of the workpiece depends on the surface properties of these dies, where surface roughness, material hardness, and wear evolution of their surfaces are critical aspects to consider. This research analyzes different wire electrical discharge machining surface conditions combined with polishing treatment to describe their influence on friction and wear. Wire electrical discharge machining defines the disks’ surface properties in finishing and roughing conditions, and polishing treatment varies in time and paper sand depending on the roughness. Abbott-Firestone curves and Rsk-Rku roughness parameters characterize the surface roughness of each studied configuration. Room temperature pin-on-disk tests were performed to analyze friction coefficients and wear rate for AISI 1045 pins and AISI H13 disks. On average, the highest (0.284) and the lowest (0.201) friction coefficients were found for the combination of finishing wire electrical discharge machining + polishing and roughing wire electrical discharge machining conditions, respectively. Scanning electron microscope images were taken to describe the wear tracks and pin degradation for different sliding abrasive configurations. The diagram correlating the surface morphology and the friction coefficient predicts the wear damage on initial surface conditions, which is crucial in the forging industry to determine tool maintenance or replacement. |
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|
Trabajo de INTI |
URL: |
https://link.springer.com/article/10.1007%2Fs00170-021-07897-4 |
| Tipo de Docum.: |
artículo |
| Título: |
Surface damaging of brass and steel pins when sliding over nitrided samples cut by finishing and roughing EDM conditions |
| Autor: |
Martynenko, Vitaliy;
Martínez Krahmer, Daniel;
Nápoles Alberro, Amelia;
Cabo, Amado;
Pérez, Daniela;
Zayas Figueras, Enrique E.;
Gonzalez Rojas, Hernán A.;
Sánchez Egea, Antonio J.
|
| Título Ser./Col.: |
Materials, 13(14) |
| Autor Inst. Ser./Col.: |
Multidisciplinary Digital Publishing Institute. MDPI. Basilea. CH |
| Idioma: |
eng |
| Datos de Edición: |
s.l. MDPI. 2020. |
| Pág./Vol.: |
10p. |
| Unidad técnica: |
INTI-Mecánica.
|
| Descriptores: |
Superficies;
Latón;
Aceros;
Nitruración;
Nitrógeno;
Plasma;
Calidad;
Desgaste;
Fricción
|
| Resumen: |
In the forging industry, surface quality and surface treatments of dies are crucial parameters to extend their life. These components are usually machined by milling or by Electrical Discharge Machining (EDM), and the final surface roughness depends on the machining techniques and operational conditions used in its fabrication. After milling, a nitriding treatment is widely applied to extend its service life. Nevertheless, no scientific report that informs about nitriding after EDM has been found. Accordingly, this work focuses on the wear and friction behavior of pins made of brass and medium carbon steel sliding over AISI H13 discs, made by wire EDM in the conditions of finishing and roughing. The discs are plasma nitride, and their effect on the wear during pin-on-disc tests is evaluated. In this sense, the analysis of the surface damage for the different pins will help us to understand the service life and wear evolution of the forging dies. The results show that plasma nitride reduces the friction and prevents the degradation of the pin, independently of the material of the pin, when sliding over finishing and roughing EDM conditions. |
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|
Trabajo de INTI |
URL: |
https://www.mdpi.com/1996-1944/13/14/3199 |
| Tipo de Docum.: |
artículo |
| Título: |
Report of the CCQM-K130 : Nitrogen mass fraction measurements in glycine |
| Autor: |
Medvedevskikh, Maria;
Jury, Bessonov;
Krasheninina, Maria;
Acco Garcia, Steve Ali;
Haraldsson, Conny;
Rodriguez, M. Alejandra;
Rodriguez, Gabriela;
Salvo, Karino;
Gavrilkin, Vladimir;
Kulik, Sergey;
Samuel, Laly;
do Rego, Eliane C. P.;
Wollinger, Wagner;
Monteiro, Tânia M.;
de Carvalho, Lucas J.
|
| Título Ser./Col.: |
Metrología, 54(1A) |
| Autor Inst. Ser./Col.: |
Bureau International des Poids et Mesures. BIPM. Paris. FR |
| Idioma: |
eng |
| Datos de Edición: |
s.l. IOP Publishing. 2017. |
| Pág./Vol.: |
21p. |
| Descriptores: |
Mediciones;
Metrología;
Masa;
Nitrógeno;
Leche en polvo;
Alimentos;
Materias primas;
Proteínas;
Encimas;
Aminoácidos
|
| Resumen: |
Mass fraction of nitrogen is very important pointer because the results of these measurements are often used for determination of protein mass fraction that is an important indicator of the quality of the vast majority of food products and raw materials, in particular dry milk powder. Proteins-enzymes catalyze chemical reactions, protein along with fats and carbohydrates is one of the indicators characterizing the energy value of food, so its definition is mandatory for all food products. The aim of this key comparison CCQM-K130 and pilot study P166 is to support National Measurement Institutes (NMIs) and Designated Institutes (DIs) to demonstrate the validity of the procedures the employed for determination of nitrogen mass fraction in glycine. The study material for this key comparison and pilot study has been selected to be representative as one of the aminoacid – the simplest part of the protein. Glycine is an amino acid, single acid that does not have any isomers (melting point –290 °C; specific heat of evaporation − 528,6 J/kg; specific melting heat − 981,1 J/kg; pKa − 2,34, molar mass - 75,07 g/mol, density - 1,607 g/cm3). Ural Scientific Research Institute for Metrology (UNIIM) acted as the coordinating laboratory of this comparison and pilot study. Eight NMIs participated in this key comparison and two NMIs participated in Pilot study. The results of Pilot study are excluded from the Report B. |
Ver Documento
|
Trabajo de INTI |
URL: |
https://ui.adsabs.harvard.edu/abs/2017Metro..54.8004M/abstract |
| Tipo de Docum.: |
artículo |
| Título: |
Certificación de un material de referencia de carne en base a un estudio de colaboración |
| Autor: |
Salazar Arzate, Claudia Marcela;
Regalado, Laura;
Pazos, Alberto;
Vivino, Enrique;
García, Vania;
Pantoja, María Rosa;
Rocha, Eliana;
Vacaflor, Patricia;
Casiano, Rodrigo;
Cucatti, Mónica Regina;
Miyagushu, Luciana;
Sousa, Renata;
Uekane, Thais;
Gonçalves de Melo, Monique;
Acevedo, Xiomara;
Jiménez, Elizabeth;
Jiménez, Linda Patricia;
Rivera, Myriam Jessel;
Torres, Pedro Hernán;
Larrea, Elena;
Navas, Lucía;
Silva, Susana;
Phillips, Andrene;
Random, Dwight;
Acco, Steve;
Ramos, Ana;
Uribe, Christian;
Ticona, Galia;
Toro, Cristina;
Francini, Lorena;
Reinares, Rosana
|
| Autor Instit.: |
INTI-Carnes. Buenos Aires. AR; Instituto Boliviano de MetrologíaI. BMETRO. BO; Instituto Nacional de Metrología, Normalización y Calidad Industrial. INMETRO. BR; Superintendencia de Industria y Comercio. SIC. CO; Instituto Ecuatoriano de Normalización. INEN. EC; Bureau of Standards Jamaica. BSJ. JM; Centro Nacional de Metrología. CENAM. MX; Instituto Nacional de Defensa de la Competencia y de la Protección de la Propiedad Intelectual, Servicio Nacional de Metrología. NDECOPI. PE; Laboratorio Tecnológico del Uruguay. LATU. UY |
| Título Ser./Col.: |
Innotec, 7 |
| Autor Inst. Ser./Col.: |
Laboratorio Tecnológico del Uruguay. LATU. UY |
| Idioma: |
spa |
| Datos de Edición: |
Montevideo. UY. LATU. 2012. |
| Pág./Vol.: |
p.5-15. |
| Unidad técnica: |
INTI-Carnes.
|
| Descriptores: |
Carnes;
Certificación;
Mediciones;
Laboratorios;
Calidad;
Valor nutritivo;
Nitrógeno;
Grasas;
Sodio;
Potasio;
Carne vacuna;
Carnes enlatadas;
Metrología;
Mediciones;
Productos cárnicos
|
Ver Documento
|
