This standard is issued under the fixed designation A /A M; the number 1 This practice is under the jurisdiction of ASTM Committee A01 on Steel. ASTM AAM_冶金/矿山/地质_工程科技_专业资料。ASTM A AM 碳钢、低合金钢和马氏体不锈钢铸件超声波检验操作. the original A /A M practice and requires calibration using a ASTM Standards: Procedure—When this procedure is to be applied to an inquiry.

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When section thicknesses over 15 in. Calibration shall be executed by either flat-bottomed hole or back-wall reflection. Linearity shall be determined in accordance with Practice E or equivalent electronic means. 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 ashm use.

ASTM A609/A609M – 12(2018)

Combining values from the two systems may result in nonconformance with the standard. Block fabricated with a 2-in. BoxArlingate Ln. The stenciled grid number shall appear in the upper right hand corner of the grid. NOTE 2— The 3?

Ultrasonic Testing Quality Level 1 2 3 4 5 6 7 Area, in. This will be the reference line for reporting discontinuity amplitudes.

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All other types of rejectable indications shall be completely removed. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. If a procedure is not speci? NOTE 3—In certain castings, because of very long test distances or curvature of the test surface, the casting surface area over which a given discontinuity is detected may be considerably larger or smaller than the actual area of the discontinuity in the casting; in such cases a graphic plot that qstm a consideration of beam spread should be used for realistic evaluation of the discontinuity.

Combining values from the two systems may result in non-conformance with the standard. Reference standards shall be? Draw a curve through these marks on the screen or on suitable graph paper.


Next, select the test block whose overall length, C 6a09. This test method deals with the procedures for the standard practice of performing pulse-echo ultrasonic examination of heat-treated carbon, low-alloy, and martensitic stainless steel castings by the longitudinal-beam technique.

A question on ASTM A

Your comments are invited either for revision of this standard or for additional asgm and should be addressed to ASTM International Headquarters. A number in parentheses indicates the year of last reapproval. Draw a rectangle or other regular shape through the indication in order to form a polygon from which the area may be easily computed. When grids are laid out on the casting surface and they encompass different quality levels, each speci?

NOTE 2—The attenuator or calibrated gain control may be used to change the signal amplitude during examination to permit small amplitude signals to be more readily detected.

Grid numbers shall be stenciled on the casting for record purposes and for grid area identity. Therefore, it is impractical to specify an ultrasonic quality level that would be universally applicable to aa609 a diversity of products. It also provides supplementary requirements for angle beam testing. Nominal Production Material Thickness tin.

The supplementary requirements shall apply only when specified individually by the purchaser in the purchase order or contract. Draw a line, using overlays or electronic markers, on the instrument screen, parallel to the sweep line, through the peak of the 1.

In order to accomplish this,? ICS Number Code Adjust the gain of the instrument until the back re? Rejectable conditions are as follows and when any of the conditions listed below are found, the indications shall be removed and repair welded to the applicable process speci? Where the distance between indications is less than the lowest dimension of the largest indication in the group, the cluster shall be repair welded.


If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. NOTE 2—For block sizes over 3 in.

This examination technique is intended to complement Guide E94 in the detection of discontinuities. The boundary limits of the indication shall be determined by marking a sufficient number of marks on the casting surfaces where the ultrasonic signal equals one half the reference amplitude, 0.

Place the search unit on the casting at the transfer point and adjust the instrument gain until a6099 back re?

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?

If they are not, the cluster having the largest single indication shall be removed. In order to avoid time loss in production, acceptance inspection of cast surfaces may be done prior to machining. The area of the location, for the purpose of this evaluation, shall be considered the area that is con? Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.

The instrument to be used for examination shall be the ultrasonic, pulsed, reflection type. It is not necessary that the ultrasonic signal exceed the amplitude reference line over the entire area. Users of this standard are expressly advised that determination asttm the validity of any such patent rights, and the risk aztm infringement of such rights, are entirely their own responsibility.

For material thickness of 3 in. Still other instruments do not have calibrated gains or attenuators.

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