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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Metal Removal Marks Welds — indications of welds fully or partially removed by thermal or mechanical dressing.
ASTM A802 PDF
Riser removal and machining may reveal shrinkage that extends from the interior of the casting to the near surface area. The crater-like appearance of the casting surface depression is typical. Four levels of acceptance standards are provided. If you feel that your comments a8802 not received a fair hearing q802 should make your views known to the ASTM Committee on Standards, at the address shown below. Brackets are produced by providing suitable cavities in the mold or core. A superscript epsilon e indicates an editorial change since the last revision or reapproval.
ASTM A(Reapproved )_百度文库
They develop due to low temperature, unfavorable? 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.
Surface Texture — the natural satm of the casting after shot blasting. This abstract is wstm brief summary of the referenced standard.
Metal Removal Marks Mechanical Dressing. The comparator can also be used as the standard of quality inspection. Brackets merely change the casting appearance due to their presence. Work Item s – proposed revisions of this standard. Four levels of satm standards are provided.
ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. A number in parentheses indicates the year of last reapproval. Link to Active This link will always route to the current Active version of the standard. Surface discontinuities left by these inclusions are referred to by the inclusion type that caused their formation: Metal Removal Marks Welds – indications of welds fully or partially removed by thermal or mechanical dressing.
Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. Inserts – indications of chaplets sand core supports or internal chills.
Their appearance may, at times, more closely re? Visual Inspection Acceptance Criteria. Finer marks are produced with the abrasive cut-off wheel and grinding. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?
Fusion Discontinuities – surface irregularities giving a wrinkled appearance.
It is the responsibility of the user of this standard to establish appropriate safety and health practices a02 determine the applicability of regulatory limitations prior to use.
Metal Removal Marks Thermal Dressing.
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. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
Fusion Discontinuities — surface irregularities giving a wrinkled appearance. They differ by a more rounded appearance of the depression and do not exhibit the crater-like appearance of ceroxides.
Level A for surface texture, Level B for nonmetallic inclusions, Level C for gas porosity, Level D for solidification discontinuities, Level E for sand expansion discontinuities, Level F for metal inserts, Level G for thermally cut surfaces, Level H for mechanically asrm surfaces, and Level J for welded surfaces.
Metal Removal Marks Mechanical Dressing – surface remaining after using a mechanical means of dressing a cast surface or a previously thermally dressed surface. Irregular, malformed edges of more severe misruns, and not fully formed castings, are characteristic. Inserts — indications of chaplets sand core supports or internal chills.
Surface Texture – the natural surface of the casting after shot blasting. Metal Removal Marks Thermal Dressing. Wrinkles result from irregularities of the liquid metal? Historical Version s — view previous versions atsm standard.
This standard has been approved for use by agencies of the Department of Defense. Expansion Discontinuities – slightly raised surface irregularities. Metal Removal Marks Mechanical Dressing. Originally published as A — Expansion Discontinuities — slightly raised surface irregularities.
This abstract is a brief summary of the referenced standard. The use of the comparators is superior to methods based on photographs which can introduce uncertainties concerning interpretation, particularly with regards o the depth of surface irregularities.
Brackets have the same purpose but represent an integral part of the casting. Rat tails form as aetm result of sand expansion and minor buckling of the mold surface during? Visual Inspection Acceptance Criteria.
Four levels of acceptance standards are provided. Non-Metallic Inclusions — Non-metallic material trapped on the surface of castings. 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 astmm the photos, and learn about the requirements.