Referenced Documents ASTM Standards: A 27/A 27M Speciﬁcation for Steel Castings, Carbon, A /A M A /A M Speciﬁcation for Castings. ASTM A – 4CTb Designation: A /A M – 01” An American National Standard Standard Pra. 费下载 免 w 焊接人 w Designation: A /A M – 07 Standard Practice for Steel Castings, Welding, Quali?cations of.
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The welder or operator successfully quali? A Indicate the single gas or proportional parts of mixed gases and? Guided bend test specimens shall be prepared by cutting the test plate or pipe to form specimens of approximately rectangular cross section. Each specimen shall be tested and meet the requirements of 7.
When two base materials having different category numbers are welded together, a procedure qualification must be performed asym the combination.
C Where only a aatm coupon is required, the center of the specimen should be midway between the surfaces. Filler Metal F Group No.
A Indicate minimum temperature. All thicknesses of pipe or cylindrical castings having an outside diameter greater than 3 in. C Indicate if preheat maintenance is during welding or until postweld heat treatment is performed.
Preparation of Test Plate 5. When specimens wider than 1. Test material shall be oriented as shown in Fig. P-number designations in the ASME grouping of base metals for qualification may be different than the category numbers listed in Table 1.
P-number designations in the ASME grouping of base metals for qualification may be different than the category numbers listed in Table 1. If the castings are not to be postweld heattreated, then the test material is not to be postweld heat-treated.
Four types of test shall be conducted in the qualification procedures such as tension test, bend test, Charpy impact test and radiographic test. However, cracks occurring on the corners of the specimen during testing shall not be considered unless there is definite evidence that they result from slag inclusions or other internal defects. The welder or operator successfully performing the procedure qualification test is automatically qualified for performance. Tensile strength less than 85 ksi [ MPa].
The side of the specimen turned toward the gap of the jig aastm be the face for face-bend specimens, the root for root-bend specimens, and the side with the awtm number of defects, if any, for side-bend specimens. Metric Equivalents Y 8 [mml t, in. In accordance with Procedure No. B Indicate A Number from Table 4. The dimensions of the welding groove are not essential variables of the welding procedure. The presence or absence of up to 0. Backing plates shall be made fromA steel and shall?
Changes other than those listed may be made without requali? Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
When using the wrap-around jig Fig. Thickness, t, of Test Plate or Pipe as Welded, in. Groove dimensions as shown in Fig. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. 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 This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years and if not revised, either reapproved or withdrawn.
A Indicate material of backing plate. Approved May 1, Guided bend test specimens are of three types depending on which surface -side bend, face bend, or root bend is on the convex outer side of the bent specimen.
If multiple specimens are used, one complete set shall be made for each required test. The values stated in each system may not be exact asfm therefore, each system shall be used independently of the other.
The orientation of the welds with respect to the horizontal and vertical planes of reference is classified into four positions, namely, flat, horizontal, vertical, and overhead.
The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Where the material thickness permits, the axis of a heat-affected zone specimen may be inclined to allow the root of the notch to align parallel to the fusion line Fig. A Indicate general material description in the Title. When specimens wider than 1. Guided Bend Test 8. Individual reprints single or multiple copies of this standard may be a4488 by contacting ASTM at the above address or at phonefaxor service astm.
Root Bend 2 D The ends may be threaded or shaped to? Indicate any limits on peening?