Etiqueta: pyrometry

Consideraciones para realizar SATs de acuerdo a CQI-9

La prueba System Accuracy Test (SAT), o Probe Check, es una comparación in situ del sistema de medición de temperatura del horno (temopar + instrumento) contra un sistema de medición independiente de mayor precisión. El objetivo de esta prueba es identificar la desviación existente de la indicación de temperatura de los equipos de tratamiento térmico y así determinar si se encuentran dentro de los límites aceptables. Esta prueba se debe realizar tanto a los sistemas de control como a los sistemas de registro (graficadores).

En la entrada de esta semana del blog Tratamiento Térmico MX, les compartimos la siguiente infografía con el procedimiento y criterios para conducir la prueba SAT conforme a CQI-9

Procedimiento y criterios para conducir SATs de acuerdo a CQI-9

 

Victor Zacarias

Víctor Zacarías is a Metallurgical Engineer from the University of Queretaro with studies in Strategic Management from Tec de Monterrey. With over 15 years of experience in Heat Treatment Management, he is currently the Managing Director of Global Thermal Solutions México. He has conducted numerous courses, workshops and assessments in México, United States, Brazil, Argentina and Costa Rica. He has been member of the AIAG Heat Treat Work Group (CQI-9 committee) and the SAE Aerospace Materials Engineering Committee (AMS2750).

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Calibración de Termopares de acuerdo a AMS2750

La norma AMS2750 es la especificación mayormente aceptada por la industria aeroespacial para definir los requerimientos de pirometría de los equipos de proceso empleados en Tratamiento Térmico. Se trata de un estándar muy completo que nos permite resolver las incógnitas que los metalúrgicos siempre ponemos sobre la mesa como:

  • ¿Cómo saber que la lectura de temperatura del horno es precisa?,
  • ¿Cómo saber cuánta es la variación de temperatura dentro del horno?
  • ¿Como saber que toda la carga fue expuesta a una temperatura consistente durante el ciclo?

Uno de los aspectos principales que contempla esta especificación es la calibración de los termopares (y cualquier otro sensor de temperatura), así como los re-usos en función de su aplicación. Es por eso que el día de hoy queremos compartir esta sencilla infografía con los requisitos básicos para un termopar empleado para tratamiento térmico de componentes aeroespaciales

 

Victor Zacarias

Víctor Zacarías is a Metallurgical Engineer from the University of Queretaro with studies in Strategic Management from Tec de Monterrey. With over 15 years of experience in Heat Treatment Management, he is currently the Managing Director of Global Thermal Solutions México. He has conducted numerous courses, workshops and assessments in México, United States, Brazil, Argentina and Costa Rica. He has been member of the AIAG Heat Treat Work Group (CQI-9 committee) and the SAE Aerospace Materials Engineering Committee (AMS2750).

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What’s important in Heat Treatment Instrumentation?

Any temperature system is composed of a sensor (in heat treat, commonly a thermocouple) and an instrument. Having a properly calibrated sensor is just the beginning of the road to an accurate and consistent measuring system so, lets talk this time about the instrumentation. You may like: How to choose temperature sensors in Heat Treatment

The instruments receive electrical communication from the thermocouples and convert the electromotive force (emf) produced by the sensors into temperature values that can be used in the controlling, monitoring and recording of the process parameters.

In heat treatment, we usually have three categories of instruments:

  1. Standard instruments
  2. Test instruments
  3. Furnace instruments

Each category has a specific purpose and the requirements are normally defined by the process specification. AMS2750 F and CQI-9 version 4 for example, clearly define the usage and precision of the instrumentation used in thermal processing. On the following infographic you can find useful recommendations about temperature instrumentation and the most common calibration requirements

Victor Zacarias

Víctor Zacarías is a Metallurgical Engineer from the University of Queretaro with studies in Strategic Management from Tec de Monterrey. With over 15 years of experience in Heat Treatment Management, he is currently the Managing Director of Global Thermal Solutions México. He has conducted numerous courses, workshops and assessments in México, United States, Brazil, Argentina and Costa Rica. He has been member of the AIAG Heat Treat Work Group (CQI-9 committee) and the SAE Aerospace Materials Engineering Committee (AMS2750).

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How to choose Temperature Sensors in Heat Treatment?

Have you ever purchased the wrong thermocouple? It happens and it is annoying

But enough is enough. Not anymore! Select the right sensor for your application with these simple steps:

  1. Define the en use: calibration, test, control or load thermocouple
  2. Know the exact range of use: usually defined by the qualified operating temperature
  3. Specify test points. Fixed points or calibration intervals no greater than 250 °F (140 °C)
  4. Designate wire type and insulation: Base Thermocouples: K, T, J, E and N. Noble Thermocouples: S, R and B
  5. Insurance calibration compliance. AMS2750 section 3.1.2 defines the requirements of the calibration certificate

Click on the following infographic and find all the details you need in your need purchase of sensors

Want to learn more? Visit us at www.globalthermalsolutions.com

Victor Zacarias

Víctor Zacarías is a Metallurgical Engineer from the University of Queretaro with studies in Strategic Management from Tec de Monterrey. With over 15 years of experience in Heat Treatment Management, he is currently the Managing Director of Global Thermal Solutions México. He has conducted numerous courses, workshops and assessments in México, United States, Brazil, Argentina and Costa Rica. He has been member of the AIAG Heat Treat Work Group (CQI-9 committee) and the SAE Aerospace Materials Engineering Committee (AMS2750).

More Posts - Website