A380/A380M Standard Practice for Cleaning ... - ASTM International
2017年9月29日 · Precaution shall always be practiced to minimize iron contamination, in reuse of cleaning and pickling solution, in water rinsing, in circulation of cleaning solutions and rinse water, in protection of cleaned surfaces, for safety, and disposal of used solutions and water.
ASTM A380-17: Cleaning and Passivation of Stainless Steel
2017年10月18日 · For example, chemical descaling, which is also known as pickling, makes use of aqueous solutions of sulfuric acid, or nitric and hydrofluoric acid, molten alkali or salt baths, and various proprietary formulations to remove oxide films.
Designation: A380/A380M −13A380/A380M 17 Standard Practice for Cleaning, Descaling, and Passivation of Stainless Steel Parts, Equipment, and Systems1 This standard is issued under the fixed designation A380/A380M; the number immediately …
(PDF) Designation: A380/A380M − 13 Standard Practice for …
A1.5 Materials must be degreased before acid pickling and must be vigorously brushed with hot water and a bristle brush or with high-pressure water jet on completion of pickling; pH of final rinse water should be between 6 and 8 for most applications, or 6.5 to 7.5 for critical applications.
ASTM A380 Standard Practice for Cleaning, Descaling and Passivation of Stainless Steel Parts, Equipment and Systems is a valuable source of information on pickling and passivation treatments. Other sources of information may be obtained by contacting ASSDA. During steel making, sulphur in the steel is controlled to very low levels.
5.2 Chemical Descaling (Pickling)—Chemical descaling agents include aqueous solutions of sulfuric, nitric, and hydrof-luoric acid as described inAnnexA1,TableA1.1, molten alkali or salt baths, and various proprietary formulations. 5.2.1 Acid Pickling—Nitric-hydrofluoric acid solution is most widely used by fabricators of stainless steel ...
5.2 Chemical Descaling (Pickling)—Chemical descaling agents include aqueous solutions of sulfuric acid, or nitric and hydrofluoric acids, as described in Annex A1, Table A1.1,
Overview of ASTM A380 – Industry Standard for Cleaning, …
2022年4月7日 · A380 recommends a combination of nitric and hydrofluoric acids and to pickle for a maximum of 30 minutes at a time to prevent over-pickling (etching). If pickling is only partially effective, the spec suggests intermittently scrubbing the metal surface with a stainless steel or fiber brush to facilitate scale removal.
Pickling Of Stainless Steel | Stainless Steel Pickling Process
ASTM A380 ‘Practice for Cleaning, Descaling, and Passivation of Stainless Steel Parts, Equipment and Systems’ defines pickling as a chemical treatment using strong, corrosive acids that remove metallic contamination, welding and heat-treatment scales.
Designation: A380/A380M − 17 Standard Practice for Cleaning, Descaling, and Passivation of Stainless Steel Parts, Equipment, and Systems1 This standard is issued under the fixed designationA380/A380M; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.
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