ASTM A802 PDF

ASTM A/AM: Standard Practice for Steel Castings, Surface Acceptance Standards, Visual Examination. Designation: A /A M – 95 (Reapproved ) Standard Practice for. Steel Castings, Surface Acceptance Standards, Visual Examination1 This standard. Designation: A /A M – 95 (Reapproved ) An American National Standard. Standard Practice for. Steel Castings, Surface Acceptance Standards, .

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Non-Metallic Inclusions – Non-metallic material trapped on the surface of castings. Level Astmm 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.

It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the asrm of regulatory limitations prior to use.

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. Metal Removal Marks Mechanical Dressing – surface remaining after using a mechanical means of dressing a cast surface or a previously thermally dressed surface. The object of this standard is to facilitate cooperation between founder and casting purchaser in determining the surface conditions, and quality level required.

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Four levels of acceptance standards are provided. 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.

Metal Removal Marks Thermal Dressing. This abstract 8a02 a brief summary of the referenced standard. 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.

Historical Version s – view previous versions of standard. Gas Porosity – Indications of gas t the casing surface. Visual Inspection Acceptance Criteria. This practice covers the standard acceptance criteria for the determination of surface texture, surface roughness, and surface discontinuities of steel castings by visual examination.

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. Metal Removal Marks Mechanical Dressing. Surface Texture – the natural surface of the casting after shot blasting.

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Fusion Discontinuities – surface irregularities giving a wrinkled appearance.

Expansion Discontinuities – slightly raised surface irregularities. Inserts – indications of chaplets sand core supports or internal chills.

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.

Metal Removal Marks Welds – indications of welds fully or partially removed by thermal or mechanical dressing. Link to Active This link will always route to the current Active version of the standard. The comparator can also be used as the standard of quality inspection. astn