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Cooling Capacity Optimization: Calculation of Hardening Power of Aqueous Solution Based on Poly(N-Vinyl-2-Pyrrolidone)

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Abstract

Polymer quenchants are becoming increasingly popular as substitutes for traditional quenching media in hardening metallic alloys. Water-soluble organic polymer offers a number of environmental, economic, and technical advantages, as well as eliminating the quench-oil fire hazard. The close control of polymer quenchant solutions is essential for their successful applications, in order to avoid the defects of structure of steels, such as shrinkage cracks and deformations. The aim of the present paper is to evaluate and optimize the experimental parameters of polymer quenching bath which gives the best behavior quenching process and homogeneous microstructure of the final work-piece. This study has been carried out on water-soluble polymer based on poly(N-vinyl-2-pyrrolidone) PVP K30, which does not exhibit inverse solubility phenomena in water. The studied parameters include polymer concentration, bath temperature, and agitation speed. Evaluation of cooling power and hardening performance has been measured with IVF SmartQuench apparatus, using standard ISO Inconel-600 alloy. The original numerical evaluation method has been introduced in the computation software called SQ Integra. The heat transfer coefficients were used as input data for calculation of microstructural constituents and the hardness profile of cylindrical sample.

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Authors and Affiliations

  1. Laboratory of Physico-Chemical Study of Materials and Application to Environment, Faculty of Chemistry, USTHB, PO Box 32, El Alia, Bab Ezzouar, 16111, Algiers, Algeria

    Z. Koudil, R. Ikkene & M. Mouzali

  2. Centre of Research in Physical and Chemical Analysis (CRAPC), PO Box 248, 16004, Algiers RP, Algeria

    R. Ikkene

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  1. Z. Koudil
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  2. R. Ikkene
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  3. M. Mouzali
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Correspondence to M. Mouzali.

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Koudil, Z., Ikkene, R. & Mouzali, M. Cooling Capacity Optimization: Calculation of Hardening Power of Aqueous Solution Based on Poly(N-Vinyl-2-Pyrrolidone). J. of Materi Eng and Perform 23, 551–559 (2014). https://doi.org/10.1007/s11665-013-0775-9

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  • DOI: https://doi.org/10.1007/s11665-013-0775-9

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