ASTM-E1312:2013 Edition
$35.75
E1312-09(2013)e1 Standard Practice for Electromagnetic (Eddy-Current) Examination of Ferromagnetic Cylindrical Bar Product Above the Curie Temperature
Published By | Publication Date | Number of Pages |
ASTM | 2013 | 4 |
ASTM E1312-09-e1-Reapproved2013
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 2100āĀ°F (1149āĀ°C).
1.2 This practice is intended for use on bar products having diameters of 1/2 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
ICS Code
ICS Number Code 77.140.40 (Steels with special magnetic properties)
DOI: 10.1520/E1312-09R13E01