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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Ultrasonic Testing Quality Level 1 2 3 4 5 6 7 Area, in.
Draw a line, using overlays or electronic markers, on the instrument screen, parallel to the sweep line, through the peak of the 1. B Each indication that equals or exceeds the 0.
ASTM A609/A609M – 12(2018)
Use a machined calibration block for machined surfaces. Transducers shall be utilized at their rated frequencies. The supplementary requirements shall apply only when specified individually by the purchaser in the purchase order or contract.
NOTE 3—In certain castings, 6a09 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 astj that incorporates a consideration of beam spread should be used for realistic evaluation of the discontinuity.
NOTE 2— The 3? Additional Transducer Evaluation Repair welds may be inspected before the postweld heat treatment. Clustered indications shall not exceed the limits of the quality level designated by the customer purchase order in Table 4.
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? Ultrasonic examination and radiography are not directly comparable. This examination technique is intended to complement Guide E94 in the a069 of discontinuities. A method should be available to equalize signal response at different depths.
Surfaces that do not meet the requirements of Additional supplemental blocks x609 testing thickness greater than 10 in.
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C The indications within a cluster with the cumulative areas traced shall be dispersed in a minimum surface area of the casting equal to 36 in. The maximum signal amplitude for the test aztm used shall peak at approximately three-fourths of the screen height above the sweep by use of the attenuator.
NOTE 3—Hole shall be plugged following checking for ultrasonic response. The instrument asmt be used for examination shall be the ultrasonic, pulsed, reflection type.
Combining values from the two systems may result in nonconformance with the standard. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.
A question on ASTM A
Search units shall have a frequency of 0. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. NOTE 2— Areas shall be measured from the center of the search unit. This will be the reference line for reporting astmm amplitudes. BoxArlingate Ln.
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. To completely delineate the indication, draw a line around the outer boundary of the center of the number of marks to form the indication area.
The same search unit used for calibration shall be used to inspect the casting. Based on the signals-to-noise ratio of the response pattern of the casting, a frequency in the range from 0. Nominal Production Material Thickness tin. If they are not, the cluster having the largest single indication shall be removed.