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polymer quenchants

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Image
Published: 01 November 2007
Fig. 12.16 Cooling rate curves for polyalkalene glycol (PAG) polymer quenchant compared to oil quenchants. Source: Ref 12.25 More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050139
EISBN: 978-1-62708-311-9
... permitted the use of oil as a quenchant for medium-carbon steels where there were cracking tendencies because of small section size. Later, various water-soluble oils and plastic quenchants were introduced, followed by the introduction of the polymer-based water quenchants that continue to be in heavy use...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050293
EISBN: 978-1-62708-311-9
... particles from the workpieces and subsequent arcing. Depending on the quenchant, periodic inspection and cleaning should be done. Gummy residue as left from polymer quenchants should be removed. All connections should be examined for signs of discoloration caused by overheating. When coils are changed...
Image
Published: 01 October 2011
, water, or polymer quenchants. (b) Marquenching, which uses either salt or hot oil as a quenchant. (c) Austempering, which uses a salt as a quenchant. (d) Isothermal quenching, which uses either salt or hot oil as a quenchant More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140117
EISBN: 978-1-62708-264-8
.... It also discusses the use of various quenchants, including oil, polymer, and molten salt, and explains how to measure and compare their performance using a standard (ISO 9950) test. austempering cooling performance martempering molten salt bath quenchants oil quenchants polymer quenchants...
Image
Published: 01 December 1996
Fig. 4-1 (a) Schematic illustration of the three stages of cooling upon quenching a steel into a liquid. (b) Photographs of a cylinder quenched into a polymer quenchant, showing the three stages of cooling. ((a) from J. Bodin and S. Segerberg in Quenching and Distortion Control , G.E. Totten More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050263
EISBN: 978-1-62708-311-9
... operation Carbon restore Quenching speed is too slow Lower temperature of water or polymer quenchant Lower concentration of polymer quenchant Increase impingement of change method of application Change type to faster-speed quenchant Austenitizing temperature is too low Use a longer heat...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050335
EISBN: 978-1-62708-311-9
... desired. This includes the quenchant speed, desired operating temperature range, and additives. Some biocide additives contain chlorine, which can combine with alkaline glycol to form cholorethyl. End users can also specify nitrate-or non-nitrate-based polymer quenchants to avoid the formation...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310055
EISBN: 978-1-62708-326-3
... removes any vapor bubbles and creates spray droplets, which are available for heat transfer. However, low-pressure spraying, in effect a flood-type flow, is preferred with certain polymer quenchants. Fog quenching: This procedure uses a fine fog or mist of liquid droplets and a carrier gas...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050173
EISBN: 978-1-62708-311-9
... and defects associated with various quenchants and processing atmospheres and provides insights on how they can be removed and, in some cases, prevented. It also recommends the application of a rust preventative shortly after parts have cooled. cleaning rust protection WORKPIECES MAY NEED CLEANING...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200327
EISBN: 978-1-62708-354-6
... control in order to achieve consistent quench behavior. The quench severity provided by these baths can vary widely with the type of polymer, polymer concentration, bath temperature, and extent of agitation during quenching. Proper quenchant control is necessary and sometimes more difficult than...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050025
EISBN: 978-1-62708-311-9
... water is required because all of the electrical energy consumed is essentially transferred in the form of heat to the cooling water. Except for small radiation losses and residual heat left after quenching, even the heat produced in the workpiece is absorbed by the quenchant, which in turn needs...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130255
EISBN: 978-1-62708-284-6
... with austempering processes. Retained austenite is most pronounced where manganese and nickel are major components. The best steels for austempering are plain carbon and chromium and molybdenum alloy steels (Ref 20) . Aqueous polymer quenchants may often be used to replace quench oils, but quench severity...
Image
Published: 31 December 2020
Fig. 18 Cooling time-temperature curves for water, petroleum oil, and an aqueous polymer (polyalkylene glycol, or PAG) quenchant superimposed on the continuous cooling transformation (CCT) curve for AISI 1045 steel More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050301
EISBN: 978-1-62708-311-9
... are first quenched and in the vapor stage of quenching, a thin film of the polymer precipitates (forms) on the surface of the part. This film produces uniform, fast quenching. When the part cools so that the quenchant is in the boiling phase, the polymer redissolves into the quenchant. Q quench. To cool...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.9781627083119
EISBN: 978-1-62708-311-9
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440001
EISBN: 978-1-62708-262-4
... needed to get the desired microstructure. Typically, quenchants are liquids or gases. Common liquid quenchants are: Oil that may contain a variety of additives Water Aqueous polymer solutions Water that may contain salt or caustic additives Most common gaseous quenchants...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1996
DOI: 10.31399/asm.tb.phtpclas.t64560087
EISBN: 978-1-62708-353-9
... of cooling upon quenching a steel into a liquid. (b) Photographs of a cylinder quenched into a polymer quenchant, showing the three stages of cooling. ((a) from J. Bodin and S. Segerberg in Quenching and Distortion Control , G.E. Totten, editor, p 1, ASM International, Materials Park, Ohio, (1992), ( Ref 1...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050215
EISBN: 978-1-62708-311-9
... Oil … Yes Gray cast iron >50 P … No Ductile cast iron >50 P … No (a) nom: nominal. (b) P is polymer quench, with the concentration depending on the part geometry and hardness requirements. Caution must be used in selection of the quenchant where there is a tendency...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130177
EISBN: 978-1-62708-284-6
... depending on the cooling rate, enhancing additive, and quench oil base stock being used. When distortion control is critical, a hot oil that can be used at temperatures as high as 175 °C may be used. It is possible to use aqueous polymer quenchants, even in integral-quench furnaces, if appropriate...