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polymer quenching

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Published: 01 August 2013
Fig. 24 Polymer quenching: measured core, intermediate, near-surface, and external temperatures. Courtesy of Petrofer GmbH More
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Published: 01 August 2013
Fig. 25 Polymer quenching: calculated heat-transfer coefficient, α, as a function of time. Courtesy of Petrofer GmbH More
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Published: 01 August 2013
Fig. 26 Polymer quenching: calculated heat-transfer coefficient, α, as a function of surface temperature. Courtesy of Petrofer GmbH More
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Published: 01 August 2013
Fig. 27 Polymer quenching: differences between measured and calculated core, intermediate, and near-surface temperatures. Courtesy of Petrofer GmbH More
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Published: 01 June 2016
Fig. 22 Sequence of quenching in a polyalkylene-glycol-type polymer. (a) Moment of immersion; polymer film deposits on component surface. (b) After 15 s, film becomes active. (c) After 25 s, boiling occurs over entire surface. (d) After 35 s, boiling ceases and convection phase begins. (e More
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Published: 01 August 2013
Fig. 1 Cooling rates for spray, polymer, and oil immersion quenching More
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Published: 01 August 2013
Fig. 2 Hardness distributions for spray, polymer, and oil immersion quenching More
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Published: 30 November 2018
Fig. 15 Sequence of quenching in a polyalkylene-glycol-type polymer, (a) Moment of immersion; polymer film deposits on component surface, (b) After 15 s, film becomes active, (c) After 25 s, boiling occurs over entire surface, (d) After 35 s, boiling ceases and convection phase begins, (e More
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005789
EISBN: 978-1-62708-165-8
... oils, and polymeric quenching media exhibit very great differences in their wetting behavior. Cooling intensity of aqueous polymer quenchants depends on the concentration and molecular weight of the specific polymer, the quenchant temperature, and the agitation rate. Therefore, forced bath convection...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005862
EISBN: 978-1-62708-167-2
... hardening polymer quenching quenchants quenching quenching oils residual stress spray quenching steel water quenching INDUCTION HEATING for the hardening of steels has advantages from standpoint of quenching, because parts are individually processed in a controlled manner. This permits...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005788
EISBN: 978-1-62708-165-8
..., only solutions of poly(alkylene glycol) (PAG) copolymer can be tailored or preprogrammed for controllable delayed quenching. The concentration of the polymer is raised to a higher-than-normal level, because control of heat transfer is best achieved with a PAG solution of sufficiently high concentration...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005932
EISBN: 978-1-62708-166-5
... the polymerization of ethyl oxazoline ( Fig. 15 ) and have the most oillike quenching characteristics of all the polymer quenchants commercially available. As a result, PEOX quenchants are being used in a wide range of applications, from induction hardening of steel and cast iron to tank quenching of high...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006506
EISBN: 978-1-62708-207-5
... and thin sections, resulting in localized plastic flow and distortion observed after quenching or during machining. Usually, distortion is controlled in aluminum parts by adding polymers to water quenchants to reduce the convective or film coefficient between the part and the water, as discussed further...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005780
EISBN: 978-1-62708-165-8
... of the workpiece through a certain temperature range ( Ref 11 ). Some aqueous polymer solutions can be used as a moderator in spray quenching to further expand the advantages of spray quenching and therefore to increase its applications ( Ref 12 ). Cooling Behavior Experiment Materials and Procedures...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006260
EISBN: 978-1-62708-169-6
... be controlled by proper racking. It concludes with information on agitation and the quench tank system used in the quenching of aluminum alloys. agitation system aluminum alloys cooling rate immersion water quenching polyalkylene glycol polymer quenchants quench sensitivity quench severity quench...
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Published: 01 August 2013
Fig. 5 Illustration of four common rewetting profiles when quenching steel from the austenitization temperature. (a) Slow wetting typically encountered during a water quench. (b) Explosive wetting with rapidly ascending bubbles, and metal surface permanently wetted by the fluid (polymer More
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.9781627081665
EISBN: 978-1-62708-166-5
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005824
EISBN: 978-1-62708-165-8
..., classification, selection, and maintenance are reviewed in detail. The article addresses the various reasons for quench oil variability and complications due to aging and contamination. brine cooling flow velocity heat-transfer coefficient oil quenchants polyacrylates polyalkylene glycol polymer...
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Published: 01 August 2013
. Bottom: heat-flux density, Q , versus time. The polymer solution provides delayed quenching (compare the times to maximum Q ). More
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Published: 01 November 2010
Fig. 7 Effect of temperature on surface heat-transfer coefficient obtained during quenching of 15 mm plate in 25% polymer solution; average of six quenches. Source: Ref 24 More