ASTM A609 PDF
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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An isolated indication may be de? The supplementary requirements shall apply only when speci? 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.
Reference standards shall be?
ASTM A609/A609M – 12(2018)
The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.
Other couplants may be used when agreed upon between the purchaser and supplier.
Based on the signals-to-noise ratio 6a09 the response pattern of the casting, a frequency in the range from 0. 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. Place the search unit on the casting at the transfer point and adjust the instrument gain until the back re?
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.
Draw a curve through these marks on the screen or on suitable graph paper. This will be the reference line for reporting discontinuity amplitudes. Signal evaluation is made by returning the attenuator or calibrated gain control to its original setting. X609 a rectangle or other regular shape through the indication in order to form a polygon from which the area may be atm computed. 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.
Use a machined calibration block for machined surfaces.
A question on ASTM A
The maximum signal amplitude for the test blocks used shall peak at approximately three-fourths of the screen height above the sweep by use of the attenuator.
Link to Active This link will always route to the current Active version of the standard. All other a6609 of rejectable indications shall be completely removed.
A method should be available to equalize signal response at different depths. If they are not, the cluster having the largest single indication shall be removed.
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ICS Number Code The stenciled grid number shall appear in the upper right hand corner of the grid. This examination technique is intended to complement Guide E94 in the detection of discontinuities.
A number in parentheses indicates the year of last reapproval. Grid numbers shall be stenciled on the casting for record purposes and for grid area identity.
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NOTE 2—For block sizes over 3 in. Still other instruments do not have calibrated gains or attenuators. Ultrasonic examination and radiography are not directly comparable. B Each indication that equals or exceeds the 0. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Machined surfaces shall be acceptance inspected as soon as possible after machining.
In order to avoid time loss in production, acceptance inspection asrm cast surfaces may be satm prior to machining. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.