ASTM A802 PDF

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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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Level A for surface texture, Asmt 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. Frequently, misruns are associated with such discontinuities as wrinkles or laps and folds, or both. Brackets are produced by atm suitable cavities in the mold or core.

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. Historical Version s — view previous versions of standard.

Metal Removal Marks Mechanical Dressing – surface remaining after using a mechanical means of dressing a cast surface or a previously thermally dressed asttm. Visual Inspection Acceptance Criteria. Link to Active This link will always route to the current Active version of the standard.

This practice covers the standard acceptance criteria for the determination of surface texture, surface roughness, and surface discontinuities of steel castings by visual examination. Sometimes cracks are referred to as cold, hot, or heat treat-cracks to indicate the condition of the castings, or the operation during which the cracks occur.

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ASTM A802 PDF

A number in parentheses indicates the year of last reapproval. Four levels of acceptance standards are provided. Fusion Discontinuities — surface irregularities giving a wrinkled appearance. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.

ASTM A(Reapproved )_百度文库

Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. Link to Active Atm link will always route to the current Active version of the standard. Sometimes, a scab consists of a raised, rough area of essentially solid metal on the surface of a casting. Work Item s – wstm revisions of 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. Surface discontinuities left by these inclusions are referred to by the inclusion type that asfm their formation: They develop due to low temperature, sstm Metal Removal Marks Welds – indications of welds fully or partially removed by thermal or mechanical dressing.

The object of this standard is to facilitate cooperation z802 founder and casting purchaser in determining the surface conditions, and quality level required.

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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 astmm, Level F for metal inserts, Level G for thermally cut surfaces, Level H for mechanically prepared surfaces, and Level J for welded surfaces.

Originally published as A — Visual Inspection Acceptance Criteria. The object of this standard is to facilitate cooperation between founder and casting purchaser in determining the surface conditions, and quality level required. They differ by a more rounded appearance of the depression and do not exhibit the crater-like appearance of ceroxides.

Wstm levels of acceptance standards are provided.

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.

Steel Castings, Surface Acceptance Standards. Four levels of acceptance standards are provided. 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. Metal Removal Marks Thermal Dressing.

This abstract is a brief summary of the referenced standard. Metal Removal Marks Mechanical Dressing. Brackets may be removed or allowed to remain on the casting.