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ASTM D6549-01

(Test Method)

Standard Test Method for Determination of Cooling Characteristics of Quenchants by Cooling Curve Analysis with Agitation (Drayton Unit)

Standard Test Method for Determination of Cooling Characteristics of Quenchants by Cooling Curve Analysis with Agitation (Drayton Unit)

SCOPE
1.1 This test method covers the equipment and the procedure for evaluation of quenching characteristics of a quenching fluid by cooling rate determination.
1.2 This test method is designed to evaluate quenching fluids with agitation, using the Drayton Agitation Unit.
1.3 The values in SI units are to be regarded as the standard. The values in parentheses are for information only.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
09-Dec-2001
ICS
75.120 - Hydraulic fluids
Technical Committee
D02 - Petroleum Products, Liquid Fuels, and Lubricants
Drafting Committee
D02.L0.06 - Non-Lubricating Process Fluids
Current Stage
Ref Project

Relations

Replaces
ASTM D6549-00 - Standard Test Method for Determination of Cooling Characteristics of Quenchants by Cooling Curve Analysis with Agitation (Drayton Unit)
Effective Date
10-Dec-2001
Replaced By
ASTM D6549-06 - Standard Test Method for Determination of Cooling Characteristics of Quenchants by Cooling Curve Analysis with Agitation (Drayton Unit)
Effective Date
01-Nov-2006
Referred By
ASTM D6666-20 - Standard Guide for Evaluation of Aqueous Polymer Quenchants
Effective Date
10-Dec-2001

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ASTM D6549-01 - Standard Test Method for Determination of Cooling Characteristics of Quenchants by Cooling Curve Analysis with Agitation (Drayton Unit)ASTM D6549-01 - Standard Test Method for Determination of Cooling Characteristics of Quenchants by Cooling Curve Analysis with Agitation (Drayton Unit)
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ASTM D6549-01 - Standard Test Method for Determination of Cooling Characteristics of Quenchants by Cooling Curve Analysis with Agitation (Drayton Unit)
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact ASTM
International (www.astm.org) for the latest information.
An American National Standard
Designation:D6549–01
Standard Test Method for
Determination of Cooling Characteristics of Quenchants by
1
Cooling Curve Analysis with Agitation (Drayton Unit)
This standard is issued under the fixed designation D 6549; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3.1.1 aqueous polymer quenchant—an aqueous polymer
quenchant is an aqueous solution containing a water soluble
1.1 This test method covers the equipment and the proce-
polymer, typically including poly(alkylene glycol), poly(ethyl
dure for evaluation of quenching characteristics of a quenching
oxazoline), poly(sodium acrylate), and poly(vinyl pyrrolidone)
fluid by cooling rate determination.
5
(1,2,3). The quenchant solution also typically contains addi-
1.2 This test method is designed to evaluate quenching
tives for corrosion and foam control, if needed. Quench
fluids with agitation, using the Drayton Agitation Unit.
severity of aqueous polymer quenchants is dependent on
1.3 ThevaluesinSIunitsaretoberegardedasthestandard.
concentration and molecular weight of the specific polymer
The values in parentheses are for information only.
being evaluated, quenchant temperature, and agitation rate as
1.4 This standard does not purport to address all of the
shown in Fig. 1, Fig. 2, and Fig. 3 respectively.
safety concerns, if any, associated with its use. It is the
3.1.2 cooling curve—the cooling curve is a graphical rep-
responsibility of the user of this standard to establish appro-
resentation of the cooling time (t) versus temperature (T)
priate safety and health practices and determine the applica-
response of the probe (see 7.3). An example is illustrated in
bility of regulatory limitations prior to use.
Fig. 4.
2. Referenced Documents
3.1.3 cooling curve analysis—theprocessofquantifyingthe
2
coolingcharacteristicsofaquenchantbasedonthetemperature
2.1 ASTM Standards:
versustimeprofileobtainedbycoolingapreheatedmetalprobe
E 220 Test Method for Calibration of Thermocouples by
assembly (see Fig. 4) under standard conditions (1-7).
Comparison Techniques
3.1.4 cooling rate curve—the cooling rate curve is a graphi-
E 230 Specification and Temperature-Electromotive Force
cal representation of first derivative of the cooling curve, the
(EMF) Tables for Standardized Thermocouples
3
rate of temperature change (dT/dt) versus temperature. An
2.2 SAE Standards:
example is illustrated in Fig. 4.
AMS5665 NickelAlloyCorrosionandHeatResistantBars,
3.1.5 quenchant—a quenching medium may be either a
Forgings and Rings
4
liquid or a gas. Gasses that are used as quenchants include air,
2.3 Other Standards:
nitrogen, argon, and hydrogen and, with the exception of air,
Wolfson Engineering Group Specification Laboratory Tests
whichisusedatatmosphericpressure,areusedunderpressure.
forAssessing the Cooling Curve Characteristics of Indus-
Liquid quenchants include water, brine (most commonly dilute
trial Quenching Media
aqueous solutions of sodium chloride or sodium hydroxide),
3. Terminology
oil, molten salt, molten metal, and aqueous solutions of water
soluble polymers. Water, brine, oil, and aqueous polymer
3.1 Definitions of Terms Specific to This Standard:
quenchants are generally used with agitation.
3.1.6 quench severity—the ability of a quenching medium
1
to extract heat from a hot metal (8).
This test method is under the jurisdiction of ASTM Committee D02 on
PetroleumProductsandLubricants andisthedirectresponsibilityofSubcommittee
D02.L0.06 on Nonlubricating Process Fluids.
4. Summary of Test Method
Current edition approved Dec. 10, 2001. Published February 2002. Originally
4.1 This test method determines the cooling time versus
published as D 6549 - 00. Last previous edition D 6549 - 00.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or temperature of a standard nickel alloy probe assembly after it
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
has been heated in a furnace to 850°C (1562°F) and then
Standards volume information, refer to the standard’s Document Summary page on
quenched in an aqueous polymer quenchant solution. The
the ASTM website.
3
Available from Society of Automotive Engineers, 400 Commonwealth Dr.,
Warrendale, PA 15096.
4 5
Available from Wolfson Heat Treatment Centre, Aston University, Aston The boldface numbers in parentheses refer to the list of references at the end of
Triangle, Birmingham B4 7ET, England. this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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1.1 This test method covers the fluidity and appearance of hydraulic fluids after storage at low temperature.  
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1.1 This test method covers a constant volume vane pump test procedure operated at 1200 r/min and 13.8 MPa.  
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1.2.2 Exception—In some cases English pressure values are given in parentheses as a safety measure.  
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1.1 This practice covers the equipment and procedures for obtaining a representative sample of liquefied petroleum gas (LPG), such as specified in ASTM Specification D1835, GPA 2140, and comparable international standards. It may also be used for other natural gas liquid (NGL) products that are normally single phase (for example, NGL mix, field butane, and so forth), defined in other industry specifications or contractual agreements, and for volatile (higher vapor pressure) crude oils.
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