The Holzapfel Group plates zinc-nickel according to the following standards: VW TL , DBL , Opel GME , GMW , BMW GS and DIN. The Holzapfel Group plates zinc iron according to the following standards: VW TL , DBL , BMW G , GME , GMW , DIN Zinc-iron. specification DBL 17 which details that a 10 to 15 micron deposit should provide NSS. 9 protection of hours with no zinc and hours with no red.
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In case of doubt, the German language original should be consulted as the authoritative text. Pickling Polishing, mechanical Sand blasting. If the heat treatment is performed in the ready plated condition, however, particular care shall be taken to 84511 that the applied metal plating does not act as diffusion barrier and prevent the success of the heat treatment with regard to hydrogen effusion.
dl Use this form to get in touch with your contact person at Holzapfel! In many cases, parts with a thread bolts, nuts can be coated in the drum.
Black chrome Learn more. Steel and powdered metals are the metals most usually plated. Abbreviated designations on drawing, in block for surface protection e. Confidentiality of the revealed data shall be assured. Page 3 DBL To the customer benefits. This limitation of the test time serves to justify the request for reasonably acceptable test times.
The type of additional coating is subject to agreement. Functional nickel Learn more. Customer benefits Learn more about the added value you get by working together with Holzapfel Group To the customer benefits.
The reaction always causes the coating to dissolve partially approx.
Requirement values for chromium VI -free layers adapted to state-of-the-art technology. Black chrome Learn more. More information about zinc-iron?
Db, processes and coatings. Protection against base metal corrosion: A uniform appearance of the surface shall also be provided in a passivated and, where applicable, sealed condition.
The product actually used for the creation of the passivation designation, manufacturer shall be indicated. Various systems are used, including those with lubricant additives. However, the standard is not valid for fasteners with dlb. The Holzapfel Group plates zinc iron according to the following standards: This should serve to ensure that for these systems too, the changeover to Cr VI -free should be possible without any need to change the drawing.
Hand-held laser medical technology. For these dnl systems, the numbering of the product versions does not change when the transition is made to Cr VI -free. Care shall be taken to ensure that uncoated surface areas do not exhibit any deposits, corrosion products or any other residue formation.
Where sealants are used, cbl product employed shall also be indicated designation, manufacturer.
Zinc-Nickel (Zn-Ni) Plating: process and advantages
Page 7 DBL May Table 2 Cr VI -free electrodeposited coatings; technical data and requirements The friction coefficients required for threaded parts are defined in DBL Parts categor Recomme y nded layer with thickness or?
Care shall be taken to ensure that the properties of the dbbl are not impaired in this process. Temporary safety precautions corrosion protection oil, packaging, where applicable by way of the sealings used shall be used to ensure that iron rust products do not occur on the inner areas of 84511 tube during treatment, storage and transport of the tubes up to the point of installation. Sealings for product versions. The relevant measures and tests db as minimization of component stresses, selection, composition and checking of chemicals, physical and chemical method limits, type of tests, test frequency, number of specimens etc.
May The parts supplier shall select the coating company. Page 14 DBL Subsequent sealing results in a further improvement of the corrosion protection. Silver Ag Learn more.
For particularly critical parts, a switch shall be made to DBL and acid-free pretreatment. These product versions may therefore only be used where the prohibition of Cr VI -compounds in corrosion protection coatings is not of relevance to the selected dnl see hereto also the notes in Section 1 of this DBL. This in turn causes some of the metallic coating to be dissolved, and a chromate coating is formed consisting of the various chemical constituents in the coating and the chromating solution ingredients.
Headquarters of the Holzapfel Group Phone.: Page 10 DBL We coat zinc-nickel black amongst others according to the following standards: All parts shall be delivered without corrosion products.
Zinc-nickel flexible fleXXcor Zinc-iron black blackcor.
The standard requirements apply to surface areas not impaired by the forming process. This normally also requires the use of identical products base chemicals for the creation of the layer.