ASTM A802 PDF
ASTM A/AM: Standard Practice for Steel Castings, Surface Acceptance Standards, Visual Examination. 55, ASTM A, BNIF , and GAR C9 Comparator, among others . Inspectors use comparators and images in these methods to visually classify the . Designation: A /A M – 95 (Reapproved ) An American National Standard. Standard Practice for. Steel Castings, Surface Acceptance Standards, .
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Four levels of acceptance standards are provided. Metal Removal Marks Mechanical Dressing.
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. Four levels of acceptance standards are provided. Historical Version s — view previous versions of standard. A superscript epsilon e indicates an editorial change since the last revision or reapproval.
Link to Active This link will always route to the current Active version of the standard.
ASTM A802 PDF
Visual Inspection Acceptance Criteria. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. Fusion Discontinuities — surface irregularities giving a wrinkled appearance.
Brackets merely change the casting appearance due to their presence. The casting designer and purchasers can denote the level one to four on the drawings as the requirements of surface quality, then the founder, Dandong Foundry, will check the photos, and learn about the requirements.
It should assist in avoiding misunderstanding arising from imprecise descriptions at the order stage and should also help in defining a surface that is amendable to a particular techniques of non-destructive testing. Expansion Discontinuities – slightly raised surface irregularities. Steel Castings, Surface Acceptance Standards.
ASTM A(Reapproved )_百度文库
Current asfm approved Sept. Metal Removal Marks Thermal Dressing. Metal Removal Marks Mechanical Dressing. The crater-like appearance of the casting surface depression is typical.
Expansion Discontinuities — slightly raised surface irregularities.
Non-Metallic Inclusions — Non-metallic material trapped on the surface of castings. Surface discontinuities left by these inclusions are referred to by the inclusion type that caused their formation: They develop due to low temperature, unfavorable? Gas Porosity — Indications of gas t the casing surface. Non-Metallic Inclusions – Non-metallic material trapped on the surface of castings.
A number in parentheses indicates the z802 of last reapproval. Sometimes, a scab consists of a raised, rough area of essentially solid metal on the surface of a casting. Work Item s – proposed revisions of this standard. Brackets have the same purpose but represent an integral part of the casting.
The resulting casting appearance is characterized by rounded edges, for a mild degree of misrun. Brackets are produced by providing suitable cavities in the mold or core.
Historical Version s – view previous versions of standard. It should assist in avoiding misunderstanding arising from imprecise descriptions at the order stage and should also help in a82 a surface that is amendable to a particular techniques of non-destructive testing.
This standard has been approved for use by agencies of the Department of Defense. Riser removal and machining may reveal shrinkage that extends from the interior of the casting to the near surface a80.
This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?