ASTM B177 PDF

ASTM Standards: B Practice for Operating Salt Spray (Fog) Apparatus2. B Guide for Engineering Chromium Electroplating3. B Practice for. Endorsed by AmericanDesignation: B – 01 (Reapproved )e1. ASTM B/BM() Standard Guide for Engineering Chromium Electroplating Scope

Author: Malkis Mikakree
Country: Pakistan
Language: English (Spanish)
Genre: Technology
Published (Last): 17 November 2012
Pages: 163
PDF File Size: 5.97 Mb
ePub File Size: 11.53 Mb
ISBN: 196-4-39055-991-6
Downloads: 74187
Price: Free* [*Free Regsitration Required]
Uploader: Akigul

There are many modications reported in the literature and some manufacturers offer proprietary baths.

Hardness should be measured in accordance with Test Method B on a panel plated concurrently with the part unless the part can be sacriced. Lead and aluminum tapes will provide a sharp line of demarcation between coated and uncoated areas with a minimum of buildup.

ASTM B/BM – 11() – Standard Guide for Engineering Chromium Electroplating

Some stainless steels benet from a Woods nickel strike prior to chromium b1177. Consult with appropriate safety manuals or safety personnel, or both, before handling sulfuric acid or chromic acid! Racks and Anodes 4.

A reversing switch should be provided to make the part anodic. If the document is revised or amended, you will be notified by email. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Guide B offers many useful methods for preparing aluminum prior to chromium electroplating. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server.

  CILINDROS GRANULOSOS ORINA PDF

Standard Guide for Engineering Chromium Electroplating

Tank voltage is normally 4 to 5 V. This standard is also available to be included in Standards Subscriptions. Proceed to Checkout Continue Shopping. There are additives, such as selenium, in the patent-free art which will also produce micro-cracked deposits.

Qstm the voice of the U. Unique activation procedures for steel exist with chromium plating that merit a separate discussion for successful plating as follows. For parts loaded in sstm or not subject to cyclical applications of stress during operation, or both, this may not be a consideration.

ASTM B177/B177M – 11(2017)

Test methods in accordance with Test Methods B can measure coating thicknesses from 2. 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 asgm solution should, of course, be handled with all the caution required of standard chromium plating baths. There does not have to be rinsing before transfer to the plating tank, but parts should be thoroughly drained to prevent spillage of qstm etching solution.

This abstract is a brief summary of the referenced standard.

ASTM B/BM() – Standard Guide for Engineering Chromium Electroplating

Specified chromium electrodeposits on ferrous surfaces are defined in Specification B Consult safety references or personnel before using.

  CHEMICAL COMPOSITION OF ZINGIBER OFFICINALE FILETYPE PDF

The removal of the ever-present, tenacious oxide lm on the surface of aluminum is what makes electroplating difficult. V177 deposits are dull gray in color and can be buffed, if desired.

In all cases, the duration of the bake shall commence from the time at which the whole of each part attains the specied temperature. Leadsheathed adtm, copper, or silver may be used when indicated by requirements for strength or conductivity.

This condition will greatly reduce the fatigue life of the part and should be avoided. Combining values from the two systems may result in non-conformance with the standard. Mild steel anodes are usually employed. We have no amendments or corrections for this standard. This bath will deposit chromium at an appropriate rate of Engineering chromium may be plated directly to the surface of a commonly used engineering metals such as aluminum, nickel alloys, cast iron, steels, copper, copper alloys, and titanium.