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Título del libro: 29th International Federation For Heat Treatment And Surface Engineering World Congress, Ifhtse 2024
Título del capítulo: COOLING CURVE ANALYSIS OF A PAG POLYMER QUENCHANT USING TWO SPRAY QUENCH RINGS DESIGNS

Autores UNAM:
JOSE BERNARDO HERNANDEZ MORALES;

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Autores externos:

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Idioma:

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Año de publicación:
2024

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Palabras clave:

Flow patterns; ISO Standards; Cooling curve; Cooling curve analysis; Cooling rates; Hardening process; Inconel 600; Induction hardening; Polymer Quenchant; Quench-ring; Solution flow rate; Spray quenching; Quenching

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Resumen:

The analysis of cooling curves obtained by immersing a probe in the quench medium has been widely used since its availability. For instance, methods described in standards such as ISO 9950 and ASTM D 6482 refer to the use of an Inconel 600 specimen which is quenched to obtain the cooling curve of a given fluid; however, spray quenching is being mostly used in induction hardening processes. In this work, the quenching characteristics of a PAG polymer at 6 and 12 % concentration were determined and compared with water as a baseline. The fluid was heated at 30 °C, while the solution flow rate was set at 90 L/min; two different quenching rings were designed and used in a laboratory-scale setting. Also, the fluid flow in the quench rings was simulated through Computational Fluid Dynamics (CFD), to obtain flow patterns inside the quenching devices. From the results obtained, the cooling rate curves showed no vapor phase, and the maximum cooling rate was found to be higher in one of the quench ring designs. The design of the quench ring device has a significant influence on the quenching characteristics of the quenchant, mainly at medium and low temperatures of the cooling rate curve. Copyright © 2024 ASM International® All rights reserved.

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Entidades citadas de la UNAM:

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Fuente:


ISBN:
9798331305475
Editorial:
ASM International

Tipo de producto:
Conference Paper

DOI:
10.31399/asm.cp.ifhtse2024p0201