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ASTM D957-06

(Practice)

Standard Practice for Determining Surface Temperature of Molds for Plastics

Standard Practice for Determining Surface Temperature of Molds for Plastics

SIGNIFICANCE AND USE
The properties of molded parts and the ease of producing satisfactory specimens are influenced by the temperature of the mold. It is desirable to know the actual mold temperature which may be different from the mold temperature control medium.
The user should be aware of temperature differences across the mold/thermocouple interface and at leads and should take precautions to minimize such differences.
SCOPE
1.1 This practice is intended for determining the temperature at a specified point or points on the surface of the cavity and base of a mold for plastics. By determining the temperature at as many points as deemed necessary, the overall temperature condition of the surface can be determined.
1.2 The values stated in SI units are to be regarded as standard. The values in brackets are given 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.Note 1
There is no similar ISO standard.

General Information

Status
Historical
Publication Date
31-Aug-2006
ICS
83.200 - Equipment for the rubber and plastics industries
Technical Committee
D20 - Plastics
Drafting Committee
D20.09 - Specimen Preparation
Current Stage
Ref Project

Relations

Replaces
ASTM D957-95(2006)e1 - Standard Practice for Determining Surface Temperature of Molds for Plastics
Effective Date
01-Sep-2006
Referred By
ASTM D1896/D1896M-10(2017) - Standard Practice for Transfer Molding Test Specimens of Thermosetting Compounds
Effective Date
01-Sep-2006
Referred By
ASTM D731-22 - Standard Test Method for Molding Index of Thermosetting Molding Powder
Effective Date
01-Sep-2006
Referred By
ASTM D3641-21 - Standard Practice for Injection Molding Test Specimens of Thermoplastic Molding and Extrusion Materials
Effective Date
01-Sep-2006

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ASTM D957-06 - Standard Practice for Determining Surface Temperature of Molds for PlasticsASTM D957-06 - Standard Practice for Determining Surface Temperature of Molds for Plastics
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ASTM D957-06 - Standard Practice for Determining Surface Temperature of Molds for Plastics
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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: D957 − 06
StandardPractice for
1
Determining Surface Temperature of Molds for Plastics
This standard is issued under the fixed designation D957; 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* 3.2 The user should be aware of temperature differences
across the mold/thermocouple interface and at leads and should
1.1 This practice is intended for determining the tempera-
take precautions to minimize such differences.
ture at a specified point or points on the surface of the cavity
andbaseofamoldforplastics.Bydeterminingthetemperature
4. Apparatus
at as many points as deemed necessary, the overall temperature
4.1 Pyrometer—A calibrated surface pyrometer traceable to
condition of the surface can be determined.
2
a national metrology institution (NMI) standard and accurate
1.2 The values stated in SI units are to be regarded as
to within 61.5°C shall be used.
standard.The values in brackets are given for information only.
5. Procedure
1.3 This standard does not purport to address all of the
5.1 The size, shape, and contours of a mold will determine
safety concerns, if any, associated with its use. It is the
the location and number of points at which temperature
responsibility of the user of this standard to establish appro-
readings should be observed. Take temperature readings at as
priate safety and health practices and determine the applica-
many points as deemed necessary to determine the temperature
bility of regulatory limitations prior to use.
condition of the mold surface. At a minimum, it is suggested
NOTE 1—There is no similar ISO standard.
that temperature be measured at the mold center, near the edge,
and at least two different but intermediate points between the
2. Summary of Practice
center and edge.
2.1 With the use of a calibrated surface pyrometer, the
5.2 Place the thermocouple of the pyrometer at any speci-
overall temperature condition of a mold for plastics can be
fied point on the surface of the cavity and base of the mold,
determined by taking readings at a specified point or many
making certain that good contact is maintained between the
points on the mold surface.
two (see Note 2). Maintain contact until the scale reaches
equilibrium.Recordthetemperaturereadingonthescaleatthis
3. Significance and Use
point.
3.1 The properties of molded parts and the ease of produc-
NOTE 2—Wax may be used to ensure intimate contact between the mold
ing satisfactory specimens are influenced by the temperature of
surface and the th
...

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3.2 The user needs to be aware of temperature differences across the mold/thermocouple interface and at leads, and take appropriate precautions to minimize such differences.
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3.1 The properties of molded parts and the ease of producing satisfactory specimens are influenced by the temperature of the mold. It is desirable to know the actual mold temperature, which can differ from the mold temperature control medium.  
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1.1 This practice is intended for determining the temperature at a specified point or points on the surface of the cavity and base of a mold for plastics. By determining the temperature at as many points as deemed necessary, the overall temperature condition of the surface can be determined.  
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1.1 This specification covers UNS N06002, UNS N06030, UNS N06035, UNS N06022, UNS N06200, UNS N10362, UNS N06230, UNS N06600, UNS N06617, UNS N06625, UNS N08020, UNS N08026, UNS N08024, UNS N08120, UNS N08926, UNS N08367, UNS N10242, UNS N10276, UNS N10665, UNS N10675, UNS N12160, UNS R20033, UNS N06059, UNS N06686, UNS N10629, UNS N08031, UNS N06045, UNS N06025, UNS N06699, and UNS R305562 billets and bars for reforging.  
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