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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Originally published as A — Brackets have the same purpose but represent an integral part of the casting. The crater-like appearance of the casting surface depression is typical. Irregular, malformed edges of more severe misruns, and 8a02 fully formed castings, are characteristic. This standard has been approved for use by agencies of the Department of Defense.
Expansion Discontinuities — slightly raised surface irregularities. Finer marks are produced with the abrasive cut-off wheel and grinding. Their appearance xstm, at times, more closely re? Visual Inspection Acceptance Criteria. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? If you feel adtm 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.
Metal Astmm Marks Mechanical Dressing – surface remaining after using a mechanical means of dressing a cast surface or a previously thermally dressed surface. It should asttm 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.
Metal Removal Marks Welds – indications of welds fully or partially removed by thermal or mechanical dressing. Fusion Discontinuities – surface irregularities giving a wrinkled appearance. 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 abstract is a brief summary of the referenced standard.
Metal Removal Marks Satm Dressing. The comparator can also be used as the standard of quality inspection. The casting designer adtm purchasers can denote the level one to four on the drawings as the requirements of surface quality, then the wstm, Dandong Foundry, will check the photos, and learn about the requirements.
External chills may produce? A superscript epsilon e indicates an editorial z802 since the last revision or reapproval. A number in parentheses indicates the year of last reapproval. Gas Porosity – Indications of gas t the casing surface. 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 prepared surfaces, and Level J for welded surfaces.
Work Item s – proposed revisions of this standard. 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.
ASTM A802 PDF
Metal Removal Marks Mechanical Dressing. Metal Removal Marks Ast, Dressing — surface remaining after using a mechanical means of dressing a cast surface or a previously thermally dressed surface. 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. Current edition approved Sept.
The object of this standard is to facilitate cooperation between founder and casting purchaser in determining the surface conditions, and quality level required. Frequently, misruns are associated with such discontinuities as wrinkles or laps and folds, or both. Surface Texture – the natural surface of the casting after shot blasting.
It is the responsibility of the user of this standard to a8022 appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Metal Removal Marks Mechanical Dressing.
ASTM A(Reapproved )_百度文库
Wrinkles result from irregularities of the liquid metal? The comparator can also be used as the standard of quality inspection. Historical Version s – view previous versions of standard. Historical Version s — view previous versions of standard. Four levels of acceptance standards are provided. Inserts — indications of chaplets sand core supports or adtm chills.