ASTM B – Designation: B – 99 (Reapproved ) Endorsed by American Electroplaters’ Socie. Find the most up-to-date version of ASTM B at Engineering International Auto and Engineering Works (IAEW), a year-old company based in Mumbai, follows the (The American Society for Testing and Materials) ASTM.
|Published (Last):||8 March 2009|
|PDF File Size:||20.4 Mb|
|ePub File Size:||16.7 Mb|
|Price:||Free* [*Free Regsitration Required]|
Spray rinsing is very effective, especially if coupled with soak rinsing by having a spray of clean water hit the work as it exits from the rinse tank. Last previous edition approved in as B — These all have a bearing on the proper functioning of cleaners.
PR cleaning improves electrolytic removal of rust and scale in alkaline chelating solutions Part III -Final electrocleaning, to remove trace solids and especially adherent impurities. Check that the heating 7 Solvent degreasing or emulsi?
On ferrous alloys no inhibition is required. These stages are g322 in three parts: Usually, even with light soils, it is advisable to retain multistage cleaning, thereby increasing the life and efficiency of the cleaning solutions.
Certain precious-metal surfaces, such as gold, may exhibit water break, even though clean.
The degree of cleanliness required for metals to be electroplated is greater than for Part II -Intermediate alkaline cleaning. A caked cleaner dissolves slowly. A cleaner may be very effective for one group of soils, yet satm for other soils.
This action, plus subsequent acid dip, before electroplating, removes disturbed metal surfaces and promotes better adhesion.
Asgm of lead, nickel, or silver and nickel, and silver electroplated surfaces should not be anodically cleaned. Insulated joints on steam, drain, and water lines should be provided.
ASTM B322 – 99(2014)
Parts going immediately to electroplating should be free from any objectionable? In-process cleaning or even a hot-water? Lead alloys are rapidly attacked and nickel and silver surfaces become passivated, requiring special activating treatments for subsequent electrodeposits. Hydrogen gas is evolved on the surface. For more specific safety precautionary statements see Sections 11 and Not all of the processes that have been reported astm b successful are described, but rather b32 basic ones that have had the wi Usually, even with light soils, it is advisable to retain multistage cleaning, thereby increasing the life and efficiency of the cleaning solutions.
This is true of electrocleaners as well as soak or spray cleaners. This standard has been approved for asmt by agencies of the Department of Defense.
Electroplated articles are used in many industries such as the marine, automotive, plumbing fixtures, and appliance industries. Foaming may be a problem, unless the cleaner is properly designed. Additions of rust inhibitors or of alkali cleaners can be made to the water phase.
BGM Fastener Military Manufactured Products |Grade 8 Specifications Sheet
Spray nozzles should not be allowed to clog with solids and vestibules should be provided at each stage of the machine to avoid contamination by overspray. A number in parentheses indicates the year of last reapproval.
For the same reason, it is sometimes necessary to operate at lower pressures even though astj pressures give better cleaning. This treatment activates the metal and is usually accomplished in acid baths which also serve to neutralize the residual alkaline?
BGM Fastener Grade 8 Product Specifications
It is poor practice to use a common rinse tank for several purposes, such as following a soak cleaner, electrocleaner, and an acid dip.
Related Suppliers Searching for related suppliers Register or Log in for direct access to additional content.
ASTM B rp To obtain true costs per thousand square feet of work processed all these factors must be included. Criteria of Cleanliness 8.