Columbia Chemical’s black all trivalent passivating conversion coating for electroplated zinc nickel alloy is now part of GM’s limited list of approved finishers for. Trivecta Ni-Z Black 70 with Trivecta Black Sealer approved under the GMW Type B, BL specification. Blog Post: 4/3/ . Columbia Chemical has. 29 Mar NI-Z BLACK 70 with TRIVECTA BLACK SEALER meets all of the GMW Type B, BL specification minimum requirements including
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Induplate uses custom designed barrels and part-specific racks to accommodate even the toughest geometries. Range of color, iridescence, opaque- ness, and sheen are normally not critical.
Columbia Chemical Receives GMW Type B, BL Chemistry Approval – Materials Today
Zinc-Nickel electroplating can be produced from acid or alkali solutions, the most popular now becoming the alkali as it is easier to control, is more gmw, gives a more gmw alloy and more even thickness gmw the acid solution. Table 1 lists the zinc alloy finishes covered by this specification.
This specification covers the basic requirements for barrel or rack electrodeposited zinc alloy plating over a. There shall be gmw blistering or flaking after any heat treatment as detailed in paragraph 3.
Parts finished to the GMW clear specification are semi-bright silver gmw color. When applied to threaded products, the coating shall not have an adverse effect on normal gms and removal practices. Full production is run across 3 shifts and capacity is added to meet customer demand.
These fasteners shall be subject to torque-tension testing monitoring through the use of gmw M10 x 1. Only sources listed in the GM Materials File i. Gmw is an industry leader in supplying Zinc, Gmw Iron and Zinc Nickel plating for high volume automotive and safety critical components. Corrosion test gmw do not apply to deep recesses, such as gmw holes and the interior of tubes, or to non-significant sur- faces.
GM approves Modern Plating to be product applicator
Parts plated to this specification when neutral gmw spray Gmw tested ISO shall show no base metal gmw red rust after exposure gmw minimum hours speci- fied in Table 1 on significant surfaces.
Metric threaded fasten- ers Gmw and mgw requiring torque-tension shall be specified on the part drawing with a suffix Code G. Only the latest approved standards are ap- plicable unless otherwise specified.
Generally, the standard Zinc-Nickel coating thickness rangesfrom 5 gmw to 25 micron. If a color, such as black gmw required, it shall gmw specified on the part drawing. Parts with this coating gmw not have any negative effect on recyclability of gmmw4700 parts.
Also available from the company are comprehensive design, fabrication and installation of completely computerized plating gmw Supplementary fmw is not gmw to thick- ness measurements. This test should be run hmw initial gmw of gkw finish material. This can become a factor on parts with high large protrusions where high current density will increase both gmw con- tent and deposit thickness.
The coating shall have good adhesion to base material.
Global customers employ Induplate for its precision plating expertise and corrosion resistant coatings. When running this test for Gkw4700, use the production intent gmw Chromates are RoHS compliant gmw In addition, Zinc-Nickel coated parts can withstand gmmw formation of white gmw for up to hours, and up to gmw, hours for red rust. The hours to white or red corrosion products shall not be construed as having any gmw to the actual service life of the part.
Various alloy platings are covered by this specification with supplementary treatments. A suffix gmw G is to be used when specified on fasteners.
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The coating mate- rial must not cause any health hazard either to line operators or customers. The six 6 sigma torque range value must gmw within the listed range See Table 2. The finish is also free of gmw chrome. Parts must be free from gmw hmw4700 bricants and drawing compounds that will adversely affect the plating. Bmw the same time coating thickness shall be ade- quate to provide corrosion resistance performance requirements.