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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A source of oil-free air shall be available to aerate the water with agitation vigorous enough to prevent air bubbles from clinging to signi?
Understanding ASTM B 689 Engineering Nickel Coatings
Electronic industry and optical re? Microscopical method Coulometric method Nondestructive Methods: It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
Oil-free air pressure may be used to speed the drying. This abstract is a brief summary of the referenced standard. Visual defects are de? This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?
Identify the substrate material by alloy identi? If they do not, Test Method B identi? NOTE 15—Usually, when a collection of coated articles, the inspection lot 8. The thickness specimen need not be carried through the complete process with the represented article.
ASTM B – 97()e1 – Standard Specification for Electroplated Engineering Nickel Coatings
The test selected should take into consideration the size, shape, or thickness of the part. Test Method B contains four sampling plans, three for use with tests that are non-destructive and one when they are destructive. NOTE 14—When both destructive and aastm tests exist for the measurement of a characteristic, the purchaser needs to state which is to be used so that the proper asrm plan is selected.
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.
Guide B provides a large number of plans and also gives guidance in the selection of a plan. A test may destroy the coating but in a non-critical area; or, although it may destroy the coating, a tested part can be reclaimed by stripping and recoating. Rejection shall be reported to the producer or supplier promptly, and in writing.
Link to Active This link will always route to the current Active version of the standard. Nickel thickness generally exceeds ?
Current edition approved Feb.
The pH of the water shall be maintained between 6. When Guide B is speci? 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?
Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. 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 The buyer and the seller may agree on the plan or plans to be used.
For example, a low-carbon steel specimen may represent a brass article when the magnetic thickness test is used Test Method B Test Method B X-ray is instrument-dependent with regard to accuracy with increasing nickel thicknesses. However, these are not normal in the treatment steps preceding the application of the?
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 if it is preferred not to submit articles to a destructive test because, for example, the articles are expensive or few in number. At the end of the test period, remove the part from the hot water, and allow the part to drain and dry. The criterion of acceptance is that thickness on the specimen that corresponds to the required thickness on the article.
NOTE 2—The thickness of the electrodeposit in holes, corners, recesses, and other areas where thickness cannot be controlled under normal electroplating conditions shall be speci?
Bright Nickel Plating
When necessary, the signi? Remove the papers at the end of the contact period, and place at once into solution C. Nonmagnetic Coatings on Magnetic Basis Metals.
There are practical limits to nickel thickness and uniformity of thickness distribution caused by the size and geometric con?
Originally approved in Methods B contains several plans and also gives instructions for calculating plans to meet special needs.
NOTE 8—The coating thickness requirements of this speci?