This standard is issued under the fixed designation E; the number 1 This guide is under the jurisdiction of ASTM Committee E07 on Nondestruc-. ASTM-Epdf. Uploaded by JavierSeiman. Copyright: © All Rights Reserved. Download as PDF or read online from Scribd voivestawimon.ml E Standard Guide for Magnetic Particle Testing. handling), 48, $, ADD TO CART. Standard + Redline PDF Bundle, 96, $, ADD TO CART.
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Item is contained in these product bundles. EN. Additional Comments: ALSO SEE ASTM E (R). Format. Details. Price (USD). PDF. Single User. $ Print. ASTM. E ASTM. E AD; HP 5/3 ASME. Code. SAE AMS. AS European standards. ⇒ EN EN EN EN /91 EN ASTM E – Standard Guide for Magnetic Particle Testing, latest edition. ASME Section V, Article 7 – Standard for Magnetic Particle.
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In Stock. Need it fast? Ask for rush delivery. Most backordered items can be rushed in from the publisher in as little as 24 hours. Some rush fees may apply. Add to Cart. People Also Bought These. People Also Bought These: This guide 2 covers techniques for both dry and wet magnetic particle testing, a nondestructive method for detecting cracks and other discontinuities at or near the surface in ferromagnetic materials.
Magnetic particle testing may be applied to raw material, semifinished material billets, blooms, castings, and forgings , finished material and welds, regardless of heat treatment or lack thereof. It is useful for preventive maintenance testing. This guide is also a reference that may be used as follows: To establish a means by which magnetic particle testing, procedures recommended or required by individual organizations, can be reviewed to evaluate their applicability and completeness.
To aid in the organization of the facilities and personnel concerned in magnetic particle testing. To aid in the preparation of procedures dealing with the examination of materials and parts.
This guide describes magnetic particle testing techniques that are recommended for a great variety of sizes and shapes of ferromagnetic materials and widely varying examination requirements. Since there are many acceptable differences in both procedure and technique, the explicit requirements should be covered by a written procedure see Section It should be pointed out, however, that after indications have been produced, they must be interpreted or classified and then evaluated.
For this purpose there should be a separate code, specification, or a specific agreement to define the type, size, location, degree of alignment and spacing, area concentration, and orientation of indications that are unacceptable in a specific part versus those which need not be removed before part acceptance. Conditions where rework or repair is not permitted should be specified. This guide describes the use of the following magnetic particle method techniques. Dry magnetic powder see 8.
Personnel Qualification —Personnel performing examinations in accordance with this guide should be qualified and certified in accordance with ASNT Recommended Practice No. Nondestructive Testing Agency —If a nondestructive testing agency as described in Practice E is used to perform the examination, the nondestructive testing agency should meet the requirements of Practice E 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. Mercury has been designated by many regulatory agencies as a hazardous material that can cause serious medical issues.
Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials.
Caution should be taken when handling mercury and mercury containing products. 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. Browse Publishers. Top Sellers. My Account. ASTM E - 15 Standard Guide for Magnetic Particle Testing For this purpose there should be a separate code, specification, or a specific agreement to define the type, size, location, degree of alignment and spacing, area concentration, and orientation of indications that are unacceptable in a specific part versus those which need not be removed before part acceptance.
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Two basic techniques apply, that is, con- should be exercised in handling these polymer materials. Use tinuous see This technique is particularly applicable to examine Part Preparation in the contract, download order, or specification.
The sequence 9. When testing a local area, such when they contact the surface of a part. This dictates 9. Magnetizing currents of the half-wave rectified is to be made for direct magnetization. See mobility on the surface of the part.
Examination with dry Section In practice, resulting from hot forming operations can mask discontinui- it involves bathing the part with the examination medium to ties. As with nonconductive coatings, it must be demonstrated provide an abundant source of suspended particles on the that the discontinuities can be detected through the coating.
The residual magnetic field from a previous magnetization that will duration of the magnetizing current is typically on the order of interfere with the examination, the part must be demagnetized. See Section As-welded, as-rolled, as-cast, or as- because of slower inherent magnetic particle mobility in the forged surfaces are generally satisfactory, but if the surface is high-viscosity suspension vehicles.
In case of doubt, both the processing and examination of the part.
An extensive presentation of applicable cleaning methods It can be used only if the material being Unless prohibited by the downloadr, small openings and oil tested has relatively high retentivity so the residual leakage holes leading to obscure passages or cavities can be plugged or field will be of sufficient strength to attract and hold the masked with a suitable nonabrasive material which is readily particles and produce indications. This technique may be 7 advantageous for integration with production or handling requirements or for intentionally limiting the sensitivity of the examination.
It has found wide use examining pipe and tubular goods. Unless demonstrations with typical parts indicate that the residual field has sufficient strength to produce relevant indications of discontinuities see Types of Magnetizing Currents In contrast, AC except for a few specialized applications, primarily be- both half-wave rectified alternating current and full-wave cause of battery cost and maintenance.
One such example is the rectified alternating current produce a magnetic field having charging of a bank of capacitors, which on discharge is used to maximum penetrating capabilities which should be used when establish a residual magnetic field in tubing, casing, line pipe, near-surface discontinuities are of concern.
Alternating current and drill pipe. The through-coil technique is normally used for Part Magnetization Techniques this purpose due to its simple, fast nature. See Fig. For direct magnetiza- detection of typical discontinuities found in weldments and tion the magnetizing current is passed directly through the part ferrous castings. As with AC for magnetization, single-phase creating a circular magnetic field in the part. The techniques described in rectified alternating current may utilize single- or three-phase Three-phase current has the advantage of lower line direction and strength should be employed.
This is especially amperage whereas single-phase equipment is less expensive. With the continuous method, Because particle movement, either dry or wet is size, configuration, or ease of processing. Table 1 compares the noticeably slower, precautions must be taken to ensure that advantages and limitations of the various methods of part sufficient time is allowed for formation of indications.
Direct Contact Part Magnetization see Fast, easy technique. Possibility of arc burns if poor contact conditions forgings, machined pieces that can be exist. Circular magnetic field surrounds current path. Long parts should be magnetized in sections to facilitate bath application without resorting to an overly long current shot.
Good sensitivity to surface and near-surface discontinuities. Simple as well as relatively complex parts can usually be easily processed with one or more shots. Complete magnetic path is conducive to maximizing residual characteristics of material.
Large castings and forgings 1. Large surface areas can be processed and examined in 1. High amperage requirements 16 to 20 A relatively short time. Cylindrical parts such as tubing, pipe, hollow 1.
Entire length can be circularly magnetized by contacting, 1. Effective field limited to outside surface and cannot shafts, etc. Ends must be conductive to electrical contacts and capable of carrying required current without excessive heat. Cannot be used on oil country tubular goods because of possibility of arc burns. Long solid parts such as billets, bars, shafts, 1. Voltage requirements increase as length increases etc.
Current requirements are independent of length.