Designation: A802-95 (Reapproved 2015) Standard Practice for Steel Castings, surface Acceptance Standards，VisualExamination1
1. Scope
1.1 This practice covers the acceptance criteria for thesurface inspection of steel castings by visual examination. Fourlevels of acceptance standards are provided.
1.2 Acceptance levels utilize Steel Castings Research andTrade Association (SCRATA)3 graded reference comparators
for the visual determination of surface _ texture._surfaceroughness.and surface discontinuities described as follows:
Acceptance levels
A——Surface Texture
B—Nonmetallic Inclusionsc Gas Porosity
D—Solidification DiscontinuitiesE——Sand Expansion DiscontinuitiesF—Metal Inserts
G—Thermally Cut Surfaces
H——Mechanically Prepared SurfacesJ—welded Surfaces
1.3 Descriptions of terms related to casting discontinuitiesare in Section 2.
1.4 This standard does nor purport to address all of thesafety concernas.if cany. associated wir irs sese.It is therespovsibility of the user of this siandard to establish appro-priete safery and healrh gpractices and deternine rhe applica-bility of regulasovry limitariors prior to use.
2.Terminology
2.1 Definitions of Terms Specific to This Srandard:2.1.1 expansion discowtinusitie s:文章源自标准下载网-https://www.biao-zhun.cn/118380.html
A802-95 (Reapproved 2015) Standard Practice for Steel Castings, surface Acceptance Standards，VisualExamination
