ASTM D6200-01(2007)
(Test Method)Standard Test Method for Determination of Cooling Characteristics of Quench Oils by Cooling Curve Analysis
Standard Test Method for Determination of Cooling Characteristics of Quench Oils by Cooling Curve Analysis
SIGNIFICANCE AND USE
This test method provides a cooling time versus temperature pathway which is directly proportional to physical properties such as the hardness obtainable upon quenching of a metal. The results obtained by this test may be used as a guide in heat treating oil selection or comparison of quench severities of different heat treating oils, new or used.
SCOPE
1.1 This test method describes the equipment and the procedure for evaluation of a quenching oil's quenching characteristics by cooling rate determination.
1.2 This test is designed to evaluate quenching oils in a non-agitated system. There is no correlation between these test results and the results obtained in agitated systems.
1.3 The values in SI units are to be regarded as the standard. The values in parenthesis are provided for information only.
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
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
Designation:D6200–01 (Reapproved 2007)
Standard Test Method for
Determination of Cooling Characteristics of Quench Oils by
1
Cooling Curve Analysis
This standard is issued under the fixed designation D6200; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Terminology
3.1 Definitions of Terms Specific to This Standard:
1.1 This test method describes the equipment and the
procedure for evaluation of a quenching oil’s quenching 3.1.1 cooling curve—The cooling curve is a graphical
characteristics by cooling rate determination. representation of the cooling time (t) - temperature (T) re-
1.2 This test is designed to evaluate quenching oils in a sponse of the probe (see 7.3).An example is illustrated in Part
non-agitated system. There is no correlation between these test Bof Fig. 1.
results and the results obtained in agitated systems. 3.1.2 cooling curve analysis—theprocessofquantifyingthe
1.3 The values in SI units are to be regarded as the standard. cooling characteristics of a heat treating oil based on the
The values in parenthesis are provided for information only. temperature versus time profile obtained by cooling a pre-
1.4 This standard does not purport to address all of the heated metal probe assembly (see Fig. 2) under standard
safety concerns, if any, associated with its use. It is the conditions.
responsibility of the user of this standard to establish appro- 3.1.3 cooling rate curve—The cooling rate curve is ob-
priate safety and health practices and determine the applica- tained by calculating the first derivative (dT/dt) of the cooling
bility of regulatory limitations prior to use. time - temperature curve.An example is illustrated in Part B of
Fig. 1.
2. Referenced Documents
3.1.4 heat treating oil—a hydrocarbon containing product,
2
2.1 ASTM Standards:
often derived from petroleum base stock, that is used to
D1744 TestMethodforWaterinLiquidPetroleumProducts mediate heat transfer between heated metal, such as austen-
3
by Karl Fischer Reagent
itized steel, to control the microstructure that is formed upon
E220 Test Method for Calibration of Thermocouples By cooling and also control distortion and minimize cracking
Comparison Techniques
which may accompany the cooling process.
E230 Specification and Temperature-Electromotive Force
3.1.5 quench severity—the ability of a quenching medium
6
(EMF) Tables for Standardized Thermocouples to extract heat from a hot metal.
4
2.2 SAE Standards:
4. Summary of Test Method
AMS5665 NickelAlloyCorrosionandHeatResistantBars,
Forgings and Rings 4.1 Determine the nickel alloy probe assembly’s cooling
5
2.3 Japanese Industrial Standards (JIS): time versus temperature after placing the assembly in a furnace
JIS K 2242 - 1980 Heat Treating Oil and heating to 850°C (1562°F) and then quenching in a heat
JIS K 6753 - 1977 Di-2-ethylhexyl Phthalate treating oil.The temperature inside the probe assembly and the
cooling times are recorded at selected time intervals to estab-
lish a cooling temperature versus time curve. The resulting
cooling curve may be used to evaluate quench severity (see
1
This test method is under the jurisdiction of ASTM Committee D02 on
Note 1).
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
D02.L0.06 on Nonlubricating Process Fluids.
NOTE 1—For production testing, the furnace temperature of 815 to
Current edition approved May 1, 2007. Published June 2007. Originally
857°C (1500 to 1575°F) may be used.
approved in 1997. Last previous edition approved in 2001 as D6200 – 01. DOI:
10.1520/D6200-01R07.
2
5. Significance and Use
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.1 This test method provides a cooling time versus tem-
Standards volume information, refer to the standard’s Document Summary page on
perature pathway which is directly proportional to physical
the ASTM website.
3
Withdrawn.
4
Available from Society of Automotive Engineers (SAE), 400 Commonwealth
Dr., Warrendale, PA 15096-0001, http://www.sae.org.
5 6
Available from Japanese Standards Organization (JSA), 4-1-24 Akasaka Boyer, H.E. and Cary, P.R., Quenching and Distortion Control, ASM Interna-
Minato-Ku, Tokyo, 107-8440, Japan, http://www.jsa.or.ja. tional, Materials Park, OH, 1988, p. 162.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D6200–01 (2007)
FIG. 1 Typical Temperature/Time and Temperature/Cooling
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.