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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Fusion Discontinuities — surface irregularities giving a wrinkled appearance. If you feel that 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.

Four 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.

They develop due to low temperature, unfavorable? Gas Porosity — Indications of gas t the casing surface. Surface Texture — the natural satm of the casting after shot blasting. Non-Metallic Inclusions — Non-metallic material trapped on the surface of castings. Metal Removal Marks Welds – indications of welds fully or partially removed by thermal or mechanical dressing. Metal Removal Marks Mechanical Dressing — surface remaining after using a mechanical means of dressing a cast surface or a previously thermally dressed surface.

Fusion Discontinuities – surface irregularities giving a wrinkled appearance. Sometimes, a scab consists of a raised, rough area of essentially solid metal on the surface of a casting. 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. External chills may produce?

ASTM A(Reapproved )_百度文库

Level A for surface texture, Level B for nonmetallic inclusions, Level C for gas porosity, Level D for solidification discontinuities, Aa802 E for sand expansion discontinuities, Level F for metal inserts, Level G for thermally cut surfaces, Level H for asfm prepared surfaces, and Level J for welded surfaces. Steel Castings, Surface Acceptance Standards. Metal Removal Marks Mechanical Dressing – surface remaining after using a mechanical means of dressing a cast surface or a previously thermally dressed surface.

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Visual Inspection Acceptance Criteria. Inserts – indications of chaplets sand core supports or internal chills.

Inserts — indications of chaplets sand core supports or internal chills. Brackets merely change the casting appearance due to their presence.

Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.

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.

Current edition approved Sept. Low liquid metal temperature and unfavorable? Metal Removal Marks Thermal Dressing. Surface discontinuities left by these inclusions are referred to by the inclusion type that caused their formation: 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.

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.

ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

Gas Porosity – Indications of gas t the casing surface. Non-Metallic Inclusions – Non-metallic material trapped on the surface of castings.

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. Irregular, malformed edges of more severe misruns, and not fully formed castings, are characteristic.

Work Item s – proposed revisions of this standard.

Link to Active Atm link will always route to the current Asgm version of the standard. Expansion Discontinuities – slightly raised surface irregularities. 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.

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Historical Version s — view previous versions of standard. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. This abstract is a brief summary of the referenced 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. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Surface Texture – the natural axtm of the zstm after shot blasting.

Their appearance may, at times, more closely re? The object of this standard is to facilitate cooperation between founder and casting purchaser in determining the surface conditions, and quality level required. Visual Inspection A082 Criteria.

ASTM A802 PDF

The resulting casting appearance is characterized by rounded edges, for a mild degree of misrun. This abstract is a brief summary of the referenced standard. Incomplete fusion due to low liquid steel temperatures and asttm ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

Four levels of acceptance standards are provided. Asmt 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.