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ASTM A802-19
Standard Practice for Steel Castings, Surface Acceptance Standards, Visual Examination
NORMA vydaná dňa 1.9.2019
Informácie o norme:
Označenie normy: ASTM A802-19
Dátum vydania normy: 1.9.2019
Kód tovaru: NS-972316
Počet strán: 3
Približná hmotnosť: 9 g (0.02 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Kategórie - podobné normy:
Anotácia textu normy ASTM A802-19 :
This practice covers the standard acceptance criteria for the determination of surface texture, surface roughness, and surface discontinuities of steel castings by visual examination. The acceptance levels utilize the Steel Castings Research and Trade Association (SCRATA) graded reference comparators described as follows: 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.
Keywords:
steel castings, surface acceptance standards, visual,, ICS Number Code 77.140.80 (Iron and steel castings)
Doplňujúce informácie
| 1. Scope |
|
1.1 This practice covers the acceptance criteria for the surface inspection of steel castings by visual examination. Four levels of acceptance standards are provided. 1.2 Acceptance levels utilize Steel
Castings Research and Trade Association (SCRATA)2
graded reference comparators for the visual determination of
surface texture, surface roughness, and surface discontinuities
described as follows: A – Surface Texture B – Nonmetallic Inclusions C – Gas Porosity D – Solidification Discontinuities E – Sand Expansion Discontinuities F – Metal Inserts G – Thermally Cut Surfaces H – Mechanically Prepared Surfaces J – Welded Surfaces 1.3 Descriptions of terms related to casting discontinuities are in Section 2. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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