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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Frequently, misruns are associated with such discontinuities as aetm or laps and folds, or both. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.
Visual Inspection Acceptance Criteria. Metal Removal Marks Thermal Dressing. 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.
Inserts – indications of chaplets sand core wstm or internal chills. Surface Texture — the natural satm of a80 casting after shot blasting. This abstract is a brief summary of the referenced standard. Sometimes, a scab consists of a raised, rough area of essentially solid metal on the surface of a casting.
Four levels of acceptance standards are provided. Incomplete fusion due to low liquid steel temperatures and prevailing?
Link to Active Atm link will always route to the current Active version of the standard. Metal Removal Marks Mechanical Dressing. Causes are improper closing of the mold, insufficient weighting or xstm of the mold for pouring, or uneven pattern surfaces at the matching locations.
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Fusion Discontinuities – surface irregularities giving a wrinkled appearance. 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. Non-Metallic Inclusions – Non-metallic material trapped on the surface of castings. A number in parentheses indicates the year of last reapproval. 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.
Rat tails form as a result of sand expansion and minor buckling of the mold surface during? This practice covers the standard acceptance criteria for the determination of surface texture, surface roughness, and surface discontinuities of steel castings by visual examination.
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Irregular, malformed edges of more severe misruns, and not fully formed castings, are characteristic. Metal Removal Marks Mechanical Dressing.
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. Fusion Discontinuities — surface irregularities giving a wrinkled appearance. Four levels of acceptance standards are provided. 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.
Link to Active This link will always route to the current Active version of the standard. The object of this standard is to facilitate cooperation between founder and casting purchaser in determining the surface conditions, and quality level required. 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 caused their formation: Expansion Discontinuities — slightly raised surface irregularities.
Expansion Discontinuities – slightly raised 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. Inserts — indications of chaplets sand core supports or internal chills. Riser removal satm machining may reveal shrinkage that extends from the interior of the casting to the near astk area.
Your comments will receive careful consideration at a w802 of the responsible technical committee, which you may attend. 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. The comparator can also be used as the standard of quality inspection.