ASTM D7646-10(2019)

Standard Test Method for Determination of Cooling Characteristics of Aqueous Polymer Quenchants for Aluminum Alloys by Cooling Curve Analysis

SIGNIFICANCE AND USE
5.1 This test method provides a cooling time versus temperature pathway. The results obtained by this test method may be used as a guide in quenchant selection or comparison of quench severities of different quenchants, new or used.
SCOPE
1.1 This test method covers the description of the equipment and the procedure for evaluating quenching characteristics of aqueous polymer quenchants by cooling rate determination.  
1.2 This test method is designed to evaluate aqueous polymer quenchants for aluminum alloys in a non-agitated system. There is no correlation between these test results and the results obtained in agitated systems.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Historical
• Publication Date: 30-Apr-2019
• ICS: 75.120 - Hydraulic fluids
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.L0.06 - Non-Lubricating Process Fluids

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D7646 − 10 (Reapproved 2019)
Standard Test Method for
Determination of Cooling Characteristics of Aqueous
Polymer Quenchants for Aluminum Alloys by Cooling Curve
1
Analysis
This standard is issued under the fixed designation D7646; 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 (emf) Tables for Standardized Thermocouples
3
1.1 This test method covers the description of the equipment 2.2 ISO Standards:
and the procedure for evaluating quenching characteristics of ISO 3819 Laboratory Glassware—Beakers
aqueous polymer quenchants by cooling rate determination. 4
2.3 Japanese Industrial Standards:
1.2 This test method is designed to evaluate aqueous poly- JIS K 2242 Heat Treating Oil
mer quenchants for aluminum alloys in a non-agitated system. 5
2.4 Wolfson Engineering Group Specification:
There is no correlation between these test results and the results
Laboratory Tests for Assessing the Cooling Curve of Indus-
obtained in agitated systems.
trial Quenching Media
1.3 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this 3. Terminology
standard.
3.1 Definitions of Terms Specific to This Standard:
1.4 This standard does not purport to address all of the
3.1.1 aqueous polymer quenchant, n—aqueous solution
safety concerns, if any, associated with its use. It is the
containing a water soluble polymer; typically including poly-
responsibility of the user of this standard to establish appro-
(alkylene glycol), poly(ethyl oxazoline), poly(sodium acrylate)
priate safety, health, and environmental practices and deter-
and poly(vinyl pyrrolidone). The quenchant solution also
mine the applicability of regulatory limitations prior to use.
typically contains additives for corrosion and foam control, if
1.5 This international standard was developed in accor-
needed. Quench severity of aqueous polymer quenchants is
dance with internationally recognized principles on standard-
dependent on concentration and molecular weight of the
ization established in the Decision on Principles for the
specific polymer being evaluated, quenchant temperature, and
Development of International Standards, Guides and Recom-
agitation rate.
mendations issued by the World Trade Organization Technical
3.1.2 characteristic temperature, n—transition temperature
Barriers to Trade (TBT) Committee.
from vapor blanket phase (film boiling phase) to rapid cooling
phase (nucleate boiling phase) on cooling curve.
2. Referenced Documents
3.1.3 cooling curve, n—cooling curve is a graphical repre-
2
2.1 ASTM Standards:
sentation of the cooling time (t)–temperature (T) response of
D6200 Test Method for Determination of Cooling Charac-
the probe (see 7.3). An example is illustrated in Part B of Fig.
teristics of Quench Oils by Cooling Curve Analysis
1.
E220 Test Method for Calibration of Thermocouples By
3.1.4 cooling curve analysis, n—the process of quantifying
Comparison Techniques
the cooling characteristics of a heat treating oil based on the
E230 Specification for Temperature-Electromotive Force
temperature versus time profile obtained by cooling a pre-
heated metal probe assembly (see Fig. 2) under standard
1 conditions.
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
Subcommittee D02.L0.06 on Non-Lubricating Process Fluids.
Current edition approved May 1, 2019. Published July 2019. Originally approved
3
in 2010. Last previous edition approved in 2014 as D7646 – 10 (2014). Available from SAE International (SAE), 400 Commonwealth Dr., Warrendale,
DOI:10.1520/D7646-10R19. PA 15096, http://www.sae.org.
2 4
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from Japanese Standards Association (JSA), Mita MT Bldg., 3-13-12
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Mita, Minato-ku, Tokyo 108-0073, Japan, http://www.jsa.or.jp.
5
Standards volume information, refer to the standard’s Document Summary page on Available from Wolfson Heat Treatment Centre, Aston University, Aston
the ASTM website. Triangle, Birmingham B4 7ET, England, http://www.sea.org.uk/whtc/.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D7646 − 10 (2019)
FIG. 1 Typical Temperature/Time and Temperature/Cooling Rate Plots for Test Probe Cooled in an Aqueous Polymer Quenchant
3.1.5 cooling rate curve, n—The cooling rat
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D7646 − 10 (Reapproved 2014) D7646 − 10 (Reapproved 2019)
Standard Test Method for
Determination of Cooling Characteristics of Aqueous
Polymer Quenchants for Aluminum Alloys by Cooling Curve
1
Analysis
This standard is issued under the fixed designation D7646; 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
1.1 This test method covers the description of the equipment and the procedure for evaluating quenching characteristics of
aqueous polymer quenchants by cooling rate determination.
1.2 This test method is designed to evaluate aqueous polymer quenchants for aluminum alloys in a non-agitated system. There
is no correlation between these test results and the results obtained in agitated systems.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
D6200 Test Method for Determination of Cooling Characteristics of Quench Oils by Cooling Curve Analysis
E220 Test Method for Calibration of Thermocouples By Comparison Techniques
E230 Specification for Temperature-Electromotive Force (emf) Tables for Standardized Thermocouples
3
2.2 ISO Standards:
ISO 3819 Laboratory Glassware—Beakers
4
2.3 Japanese Industrial Standards:
JIS K 2242 Heat Treating Oil
5
2.4 Wolfson Engineering Group Specification:
Laboratory Tests for Assessing the Cooling Curve of Industrial Quenching Media
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 aqueous polymer quenchant, n—aqueous solution containing a water soluble polymer; typically including poly(alkylene
glycol), poly(ethyl oxazoline), poly(sodium acrylate) and poly(vinyl pyrrolidone). The quenchant solution also typically contains
additives for corrosion and foam control, if needed. Quench severity of aqueous polymer quenchants is dependent on concentration
and molecular weight of the specific polymer being evaluated, quenchant temperature, and agitation rate.
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.L0.06 on Non-Lubricating Process Fluids.
Current edition approved Dec. 1, 2014May 1, 2019. Published February 2015July 2019. Originally approved in 2010. Last previous edition approved in 20102014 as
D7646 – 10.D7646 – 10 (2014). DOI:10.1520/D7646-10R14.DOI:10.1520/D7646-10R19.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from Society of Automotive Engineers, International, SAE International (SAE), 400 Commonwealth Dr., Warrendale, PA 15096-0001.15096, http://
www.sae.org.
4
Available from Japanese Standards Association, 4-1-24, Akasaka Minato-ku, Tokyo 107–8440, Japan.Association (JSA), Mita MT Bldg., 3-13-12 Mita, Minato-ku, Tokyo
108-0073, Japan, http://www.jsa.or.jp.
5
Available from Wolfson Heat Treatment Centre, Aston University, Aston Triangle, Birmingham B4 7ET, England.England, http://www.sea.org.uk/whtc/.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D7646 − 10 (2019)
3.1.2 characteristic temperature, n—transition temperature from vapor blanket phase (film boiling phase) to rapid cooling phase
(nucleate boiling phase) on cooling curve.
3.1.3 cooling curve, n—cooling curve is a graphical representation of the cooling time (t)–temperature (T) respon
...