Standard Test Method for Determination of Cooling Characteristics of Quench Oils by Cooling Curve Analysis

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.  
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-Aug-2001
Current Stage
Ref Project

Relations

Buy Standard

Standard
ASTM D6200-01 - Standard Test Method for Determination of Cooling Characteristics of Quench Oils by Cooling Curve Analysis
English language
6 pages
sale 15% off
Preview
sale 15% off
Preview

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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.
An American National Standard
Designation:D6200–01
Standard Test Method for
Determination of Cooling Characteristics of Quench Oils by
1
Cooling Curve Analysis
This standard is issued under the fixed designation D 6200; 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 3.1.1 cooling curve—The cooling curve is a graphical
representation of the cooling time (t) - temperature (T) re-
1.1 This test method describes the equipment and the
sponse of the probe (see 7.3).An example is illustrated in Part
procedure for evaluation of a quenching oil’s quenching
Bof Fig. 1.
characteristics by cooling rate determination.
3.1.2 cooling curve analysis—theprocessofquantifyingthe
1.2 This test is designed to evaluate quenching oils in a
cooling characteristics of a heat treating oil based on the
non-agitated system. There is no correlation between these test
temperature versus time profile obtained by cooling a pre-
results and the results obtained in agitated systems.
heated metal probe assembly (see Fig. 2) under standard
1.3 The values in SI units are to be regarded as the standard.
conditions.
The values in parenthesis are provided for information only.
3.1.3 cooling rate curve—The cooling rate curve is ob-
1.4 This standard does not purport to address all of the
tained by calculating the first derivative (dT/dt) of the cooling
safety concerns, if any, associated with its use. It is the
time - temperature curve.An example is illustrated in Part B of
responsibility of the user of this standard to establish appro-
Fig. 1.
priate safety and health practices and determine the applica-
3.1.4 heat treating oil—a hydrocarbon containing product,
bility of regulatory limitations prior to use.
often derived from petroleum base stock, that is used to
2. Referenced Documents mediate heat transfer between heated metal, such as austen-
itized steel, to control the microstructure that is formed upon
2.1 ASTM Standards:
cooling and also control distortion and minimize cracking
D 1744 Test Method for Water in Liquid Petroleum Prod-
2
which may accompany the cooling process.
ucts by Karl Fischer Reagent
3.1.5 quench severity—the ability of a quenching medium
E 220 Test Method for Calibration of Thermocouples by
6
3
to extract heat from a hot metal.
Comparison Techniques
E 230 Specification for Temperature-Electromotive Force
4. Summary of Test Method
3
(EMF) Tables for Standardized Thermocouples
4 4.1 Determine the nickel alloy probe assembly’s cooling
2.2 SAE Standards:
time versus temperature after placing the assembly in a furnace
AMS5665 NickelAlloyCorrosionandHeatResistantBars,
and heating to 850°C (1562°F) and then quenching in a heat
Forgings and Rings
5
treating oil.The temperature inside the probe assembly and the
2.3 Japanese Industrial Standards (JIS):
cooling times are recorded at selected time intervals to estab-
JIS K 2242 - 1980 Heat Treating Oil
lish a cooling temperature versus time curve. The resulting
JIS K 6753 - 1977 Di-2-ethylhexyl Phthalate
cooling curve may be used to evaluate quench severity (see
3. Terminology
Note 1).
3.1 Definitions of Terms Specific to This Standard:
NOTE 1—For production testing, the furnace temperature of 815 to
857°C (1500 to 1575°F) may be used.
1
This test method is under the jurisdiction of ASTM Committee D02 on
5. Significance and Use
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
D02.L0.06 on Nonlubricating Fluids. 5.1 This test method provides a cooling time versus tem-
Current edition approved Aug. 10, 2001. Published September 2001. Originally
perature pathway which is directly proportional to physical
published as D 6200 – 97. Last previous edition D 6200 – 00.
properties such as the hardness obtainable upon quenching of
2
Annual Book of ASTM Standards, Vol 05.01.
3
ametal.Theresultsobtainedbythistestmaybeusedasaguide
Annual Book of ASTM Standards, Vol 14.03.
4
Available from Society ofAutomotive Engineers, International, 400 Common-
wealth Dr., Warrendale, PA 15096-0001.
5 6
Available from Japanese StandardsAssociation, 1 - 24,Akasaka 4, Minato - ku, Boyer, H.E. and Cary, P.R., Quenching and Distortion Control, ASM Interna-
Tokyo 107 Japan. 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
FIG. 1 Typical Temperature/Time and Temperature/Cooling Rate Plots For Test Probe Cooled in a Quenching Oil
FIG. 2 Probe Details and General Probe Assembly
inheattreatingo
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.