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ASTM-E1312:2009 Edition

ASTM-E1312:2009 Edition

$35.75

E1312-09 Standard Practice for Electromagnetic (Eddy-Current) Examination of Ferromagnetic Cylindrical Bar Product Above the Curie Temperature

Published By Publication Date Number of Pages
ASTM 2009 4
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ASTM E1312-09

Historical Standard: Standard Practice for Electromagnetic (Eddy-Current) Examination of Ferromagnetic Cylindrical Bar Product Above the Curie Temperature

ASTM E1312

Scope

1.1 This practice covers procedures for eddy-current examination of hot ferromagnetic bars above the Curie temperature where the product is essentially nonmagnetic, but below 2100°F (1149°C).

1.2 This practice is intended for use on bar products having diameters of ½ in. (12.7 mm) to 8 in. (203 mm) at linear throughput speeds up to 1200 ft/min (366 m/min). Larger or smaller diameters may be examined by agreement between the using parties.

1.3 The purpose of this practice is to provide a procedure for in-line eddy-current examination of bars during processing for the detection of major or gross surface discontinuities.

1.3.1 The types of discontinuities capable of being detected are commonly referred to as: slivers, laps, seams, roll-ins (scale, dross, and so forth), and mechanical damage such as scratches, scores, or indentations.

1.4 This practice does not establish acceptance criteria. They must be specified by agreement between the using parties.

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.

1.6 This practice 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 practice to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Keywords

artificial discontinuity; curie temperature; electrical transient noise; electronically generated signal; encircling coil; ferromagnetic cylindrical bar; flux change; in-line-eddy-current examination; magnetic or electrostatic shield; phase; sensor coil; signal amplitude; suppression circuit; system reliability; transport mechanism; Electronically generated signal; Electrostatic shielding; Hot cylindrical bars; Elevated temperature tests; Encircling coil method; Ferromagnetic material/testing; In-line eddy-current examination; Ferrous metals/alloys; Flux leak testing; Magnetic shields; Manufacturing processes; Sensor coil; Signal detection/amplification/measurement; Signal/noise determination; Signal-to-noise ratio; Steel bars; Artificial discontinuity; Bars (ferromagnetic); Calibration–metals/alloys analysis instrumentation; Calibration–nondestructive analysis instrumentation; Curie temperature; Damage assessment; Defects; Discontinuities–metals/alloys; Eddy current examination; Electrical transient noise; Electromagnetic (eddy current) testing; Suppression circuit; Surface analysis–metals/alloys; System reliability; Transport mechanism

ICS Code

ICS Number Code n/a

DOI: 10.1520/E1312-09

PDF Catalog

PDF Pages PDF Title
1 Scope
Referenced Documents
Terminology
Summary of Practice
2 Significance and Use
Basis of Application
Apparatus
3 System Standardization
Procedure
Keywords

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