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Standard Specification for Automated Controlled Shot Peening of Metallic Articles Prior to Nickel, Autocatalytic Nickel, or Chromium Plating, or as Final Finish
Automatische name übersetzung:
Standard-Spezifikation für Automated Kontrollierte Kugelstrahlen von Metallgegenständen Vor Nickel , autokatalytische Nickel oder Chrom -Überzug oder als Final Finish
NORM herausgegeben am 1.9.2009
Bezeichnung normen: ASTM B851-04(2009)
Anmerkung: UNGÜLTIG
Ausgabedatum normen: 1.9.2009
SKU: NS-8410
Zahl der Seiten: 8
Gewicht ca.: 24 g (0.05 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Keywords:
peening, shot, shot peening, Autocatalytic coatings--specifications, Automated controlled shot peening, Cast steel shot, Chromium electroplating, Electroplated Ni coatings--specifications, Metallic coatings--specifications, Paintball sports, Peening, Shot peening, ICS Number Code 25.220.40 (Metallic coatings)
Significance and Use | ||||||||||||||||||||||||||||||||||||||||||||
Shot peening is a process for cold working surfaces by bombarding the product with shot of a solid and spherical nature propelled at a relatively high velocity. In general, shot peening will increase the fatigue life of a product that is subject to bending or torsional stress. It will improve resistance to stress corrosion cracking. It can be used to form parts or correct their shapes. See Appendix X1 for additional information. It is essential that the shot peening process parameters be controlled rigidly to ensure repeatability from part to part and lot to lot. This specification covers techniques and methods necessary for proper control of the shot peening process. |
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1. Scope | ||||||||||||||||||||||||||||||||||||||||||||
1.1 This specification covers the requirements for automated, controlled shot peening of metallic articles prior to electrolytic or autocatalytic deposition of nickel or chromium, or as a final finish, using shot made of cast steel, conditioned cut wire, or ceramic media. The process is applicable to those materials on which test work has shown it to be beneficial within given intensity ranges. It is not suitable for brittle materials. Hand peening and rotary flap peening are excluded specifically. 1.2 Shot peening induces residual compressive stresses in the surface and near-surface layers of metallic articles, controlling or limiting the reduction in fatigue properties that occurs from nickel or chromium plating of the article, or the fatigue properties of unplated articles. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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 and health practices and determine the applicability of regulatory limitations prior to use. |
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2. Referenced Documents | ||||||||||||||||||||||||||||||||||||||||||||
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