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ASTM C1147-01(2012)
Standard Practice for Determining the Short Term Tensile Weld Strength of Chemical-Resistant Thermoplastics
Automaticky přeložený název:
Standardní praktiky pro Určení Short Term Pevnost svaru Pevnost chemické odolné termoplastů
NORMA vydána dne 1.8.2012
Informace o normě:
Označení normy: ASTM C1147-01(2012)
Poznámka: NEPLATNÁ
Datum vydání normy: 1.8.2012
Kód zboží: NS-9722
Počet stran: 4
Přibližná hmotnost: 12 g (0.03 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Anotace textu normy ASTM C1147-01(2012) :
Keywords:
chemical resistant, plastics welding, short term weld factor, thermoplastic, welding, ICS Number Code 83.080.20 (Thermoplastic materials)
Doplňující informace
| Significance and Use | ||||
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5.1 The mechanical performance of welded thermoplastic structures is largely dependent on the quality of the welding operation. Fabricators should determine that the proper welding procedures are being followed and that welders maintain their proficiency. Results from this practice are indicative of skill in proper welding procedures for different thermoplastic materials and the use of appropriate welding equipment. If the welded test specimens have short term weld factors that meet or exceed the minimums as set forth in this practice, or as agreed to by supplier and user, it may be concluded that, with the same degree of skill and diligence by the welder, acceptable welds should be obtained in fabricated structures. |
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| 1. Scope | ||||
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1.1 This practice covers the preparation and evaluation of joints between two pieces of weldable grades of thermoplastic materials, backed and unbacked, (such as those shown in
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°FA |
Recommended Gas TypeB |
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|
|
HDPE |
500–600 |
|
Nitrogen or Air |
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PP |
550–600 |
|
Nitrogen or Air |
|
|
PVC |
500–550 |
|
Air |
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CPVC |
550–660 |
|
Air |
|
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PVDF |
650–680 |
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Nitrogen or Air |
|
|
ECTFE |
665–695 |
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Nitrogen |
|
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ETFE |
675–710 |
|
Air |
|
|
FEP |
650–725 |
|
Air |
|
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PFA |
675–750 |
|
Air |
|
|
MFA |
536–554 |
|
Air |
1.2 Since there are numerous new
technologies and techniques constantly being developed for plastic
welding, there are no profiles and procedures that can be
considered as standard for all plastics at various thicknesses.
This practice is not intended to define profiles and procedures;
however, it is intended to establish methods to evaluate minimum
short term weld factors to be achieved by the welder for the
respective plastics.
1.3 Weld procedures used for test pieces should reflect procedures to be used in actual fabrication.
1.4 Welding methods to be used could include machine welding, extrusion welding, and hot gas welding.
1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
|
Standard Practice for Indicating Oil or Water in Compressed Air |
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Standard Test Methods for Physical Dimensions of Solid Plastics Specimens |
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Standard Practices for Force Calibration and Verification of Testing Machines |
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Standard Terminology Relating to Plastics |
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