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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Surface Texture — the natural satm of the casting after shot blasting. 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.

ASTM A802 PDF

Work Item s – proposed revisions of this standard. Metal Removal Marks Mechanical Dressing. Four levels of acceptance standards are provided.

Metal Removal Marks Mechanical Dressing — surface remaining after using a mechanical means of dressing a cast surface or a previously thermally dressed surface. Non-Metallic Inclusions — Non-metallic material trapped on the surface of castings. Surface discontinuities left by these inclusions are referred to by the inclusion type that caused their formation: This abstract is a brief summary of the referenced standard.

Visual Inspection Acceptance Criteria. Rat tails form as a result of sand expansion and minor buckling of the mold surface during?

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Fusion Discontinuities — surface irregularities giving a wrinkled appearance. Ceroxides consist of a mixture of low-melting oxides and partially fused sand.

ASTM A(Reapproved )_百度文库

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. This practice covers the standard acceptance criteria for the determination of surface texture, surface roughness, and surface discontinuities of steel castings by visual examination. Expansion Discontinuities — slightly raised surface irregularities. 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 asym.

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.

Four levels of acceptance standards are provided. Historical Version s – view previous versions of standard. Historical Version s — view previous versions of standard.

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.

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. Current edition approved Sept.

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Riser removal and machining may reveal shrinkage that extends from the interior of the casting to the near surface area. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.

Gas Porosity — Indications of gas t the casing surface. Originally published as A — A superscript aztm e indicates an editorial change since the last revision or reapproval.

Their appearance may, at times, more closely re? Frequently, misruns are associated with such discontinuities as wrinkles or laps and folds, or both. It should assist in avoiding misunderstanding arising axtm 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.

Inserts — indications of chaplets sand core supports or internal chills.

The resulting casting appearance is characterized by rounded edges, for a mild degree of misrun. Metal Removal Marks Thermal Dressing. Inserts – indications of chaplets sand core supports or internal chills. Brackets have the same purpose but represent an integral part of the casting.