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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The purchaser may similarly require that a report of the test results be furnished.
It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. Electrodeposited nickel that is to be? Methods B can be used only for coating requirements that have numerical limit, such as b698 thickness. Current edition approved Feb.
When necessary, the signi? Finishes that show imperfections during subsequent manufacturing operations may be rejected.
Cobalt salts are sometimes added to the plating solution to produce harder nickel alloy deposits. NOTE 9—Some contemporary packaging materials may emit fumes that are deleterious to the surface of the coating. Link to Active This link will always route to the current Active version of the standard. When electroplated nickel is awtm to have higher hardnesses, greater wear resistance, certain residual stress values and certain leveling characteristics, sulfur and other substances are incorporated in the nickel deposit through the use of certain addition agents in the electroplating solution.
Historical Version s – view previous versions of standard. NOTE 15—Usually, when a collection of coated articles, the inspection lot 8.
Bright Nickel Plating Service per ASTM B & AMS-QQ-N | Accurate Precision Plating
Oil-free air pressure may be used to speed the drying. It is recommended that the speci? Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. For the effect of such additives, see Section 4 and Annex A3. Additives required for pH control shall be noncorrosive axtm nickel and shall be approved n689 the purchaser, for example, pH can be adjusted by introducing CO2 or by additions of H2SO4 or acetic acid, or NaOH.
ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. The specimen should duplicate the characteristics of the article that in?
NOTE 12—Since many factors in? Type 2 nickel coatings produced with certain organic additives can exhibit signi? If they do not, Methods B identi? Stress relieving after stripping is not necessary if the stripping is done anodically in an alkaline solution.
ASTM B – 97()e1 – Standard Specification for Electroplated Engineering Nickel Coatings
ASTM B NOTE 10—Test specimens often are used to represent the coated articles in a test if the articles are of a size, shape, or material that is not suitable for the test, or zstm it adtm preferred not to submit articles to a destructive test because, for example, the articles are expensive or few in number. The size of the sample and the criteria of compliance are determined by the application of statistics.
This must be considered if the parts will be subjected to repeated applications of complex load patterns in service.
Shot peening of signi? Nickel thickness generally exceeds 5? When electroplated nickel is required to have higher hardnesses, greater wear resistance, certain residual stress values and certain leveling characteristics, sulfur and other substances are incorporated in the nickel deposit through the use of certain addition agents in the electroplating solution.
In rack plating, the specimen shall be racked in the same way with the same distance from and orientation with the anodes and other items in the process as the article it represents.
Test Method B X-ray is instrument-dependent with regard to accuracy with increasing nickel thicknesses. Alloy processes include nickel-phosphorus and nickel-cobalt. The buyer and seller may agree on the plan or plans to be used.
If not, it shall be introduced into the process at the point where the coating is applied and it shall be carried through all steps that have a bearing on the coating thickness. B — 97 Reapproved Standard Speci? The purchaser needs to state whether the test is to be considered destructive or non-destructive. Metal parts shall undergo pre- and post-coating treatments to reduce the risk of hydrogen embrittlement, and peening. Remove the papers at the end of the contact period, and place at once into solution C.
Also, reduction in the fatigue life of nickel-electroplated steels can be reduced by considering the relations among the variables that in?
Codeposition of particles in nickel matrices, for example, silicon carbide, mica, thoria 1, 3, 4, 5 Nickel thickness generally exceeds ? Nickel thickness generally exceeds ?
The part fails if more than the number of pores speci? Originally approved in Identify the substrate material by alloy satm NOTE 11—When special test specimens are used to represent coated articles in a aztm test, the specimens will 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.
Bright Nickel Plating
Other—washers, fasteners, plastic extrusion disks, shaft, gears 10 The boldface numbers in parentheses refer to the list of references at the end of this speci? A number in parentheses indicates the year of last reapproval. Nickel Alloys; Chapter Three standards, Test Method BGuide Bastn Methods B contain sampling plans that are designed for the sampling inspection of coatings. The test must yield a numerical value and certain statistical requirements must be met. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
If they do not, Test Method B identi? Coatings shall be available in any one of the following types: