ASTM B (Reapproved )_能源/化工_工程科技_专业资料。 Designation: B – 97 (Reapproved ) Standard Speci?cation for. This ASTM B specification covers the requirements for electroplated nickel coatings applied to metal products for engineering applications. Bright Nickel Plating. ASTM B, AMS-QQ-N bright nickel plated electrical components. At APP we do bright nickel plating, it is widely used for decorative.
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ASTM B (Reapproved )_百度文库
NOTE 11—When special test specimens are used to represent coated articles in a thickness test, the specimens b6899 not necessarily have the same thickness and thickness distribution as the articles unless the specimens and the articles are of the same general size and shape. This abstract is a brief summary of the referenced standard.
For the effect of such additives, see Section 4 and Annex A3. It is the responsibility of satm user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. NOTE 13—Adhesion is in? The test must yield a numerical value and certain statistical requirements must be met.
When Guide B is speci?
For example, a low-carbon steel specimen may represent a brass article when the magnetic thickness test is used Test Method B Additives required for pH control shall be noncorrosive to nickel and shall be approved by the purchaser, for example, pH can be adjusted by introducing CO2 or by additions of H2SO4 or acetic acid, or NaOH.
If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
Visual defects are de? The test is very sensitive to the super? Contact marks shall be minimized in size and frequency. Methods B can be used only for coating requirements that have numerical limit, such as coating thickness.
ASTM B The thickness specimen need not be carried through the complete process with the represented article. Typical mechanical properties of nickel electroplated from these baths, and the combined effect of bath operation and solution composition variables on the mechanical properties of the electrodeposit are given in Guide B ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.
The buyer and seller may agree on the plan or plans to be used. NOTE 3—When a deposit of controlled thickness is required in holes, corners, recesses, and similar areas, special racking, auxiliary anodes or shielding will be necessary.
For the effect of such additives, see Section 4 and Annex A3. This standard has been approved for use by agencies of the Department of Defense.
Bright Nickel Plating Service per ASTM B & AMS-QQ-N | Accurate Precision Plating
The inspection lot is then classi? Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement awtm such rights, are entirely their own responsibility. Therefore, if all of the articles in a production lot are to meet the thickness requirement, the average coating thickness for the production lot as a whole will be greater that the average necessary to assure that a single article meets the requirement.
Oil-free air pressure may be used to speed the drying. This specification covers the requirements for electroplated nickel coatings applied to metal products for engineering applications for example, for use as a buildup for mismachined or worn partsfor electronics applications including as underplates in contacts or interconnectionsand in certain joining applications. Xstm case of dissatisfaction with the results of a test, the producer or supplier may make a claim for a rehearing.
Molds, dies, shafts, housings, and precision? Current edition approved Feb. Test Method B Magnetic should not be used for thicknesses less than 10? The size of the sample and the criteria of compliance are determined by the application of statistics. Stress relieving after stripping is not necessary if the stripping is done anodically in an alkaline solution.
ASTM B689 – 97(2018)e1
The recommended practices for the preparation of and electroplating on stainless steels and nickel alloys are given in Practices B and Brespectively.
Variation in the coating thickness from point to point on a coated article is an inherent characteristic of the electroplating process. It is noncorrosive to nickel. Allow 10 min contact time for the test period see Annex A2.
The procedure is known as sampling inspection. When contacts must be located on signi? Shot peening of signi? NOTE 9—Some contemporary packaging materials may emit fumes that are deleterious to the surface of the coating. Black spots and red rust indicate basis metal corrosion or porosity.
It is recommended that the speci?