Determination of optimum design parameters of water-drop cooling devices

Майсурадзе, М. В.; Éismondt, Yu. G.; Yudin, Yu.V.

doi:10.1007/s11041-010-9309-3

Cited by 4 publications

(2 citation statements)

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“…The reheat temperature of the heat probe was 800 ± 10°C. The dependence of the heattransfer coefficient (a) on the temperature of the surface of the heat probe was determined by a technique presented in [6,7]. Numerical modeling of structural transformations in water-drop quenching was performed by means of the prediction technique presented in [8].…”

Section: Methods Of Studymentioning

confidence: 99%

A Water-Drop Method of Hardening of the Welded Joints of Drill Pipes

2015

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A combined computational and experimental technique is developed for implementing a scientifically based approach to the selection of a technology of heat hardening of welded joints of drill pipes made of steel 25KhGM with the use of water-drop quenching. The basic service characteristics of the water-drop cooling device are presented. An analytic model that relates the parameters of the water-drop quenching device (standard size and number of jets in device, pressure of fed water, distance from the jet nozzle to the cooled surface) to the properties of the welded joint is proposed. With the new technique the construction of a quenching device may be developed and the technology of heat treatment of the welded joints of drill pipes optimized in order to increase the level of mechanical properties.

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Section: Methods Of Studymentioning

confidence: 99%

A Water-Drop Method of Hardening of the Welded Joints of Drill Pipes

2015

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“…We used centrifugal jet atomizers for water drip quenching of mill rollers [9,10]. An atomizer consisted of a cylindrical insert with three through openings (two peripheral openings located in one line at equal distances from the central opening) and a nozzle with a conical chamber for stirring swirling flows of water.…”

Section: Methods Of Studymentioning

confidence: 99%

Design of Water-Drip Cooling Facilities for Heat Treatment of Mill Rollers

2013

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Water-drip cooling devices based on centrifugal jet atomizers are studied experimentally. Their main operating characteristics such as the irrigation density, the uniformity of the distribution of irrigation over the cooled surface, the dependence of the heat transfer factor on the surface temperature, etc. are determined. The effect of the design and production parameters of the quenching facilities on their operating characteristics and mode of cooling of large steel articles is considered for mill rollers as an example. The results of the tests are used to design cooling facilities and heat treatment processes for mill rollers with the use of water-drip quenching.

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