Din 50979 pdf

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basics of DIN and DIN EN At the same time, they comply with DIN , thus protecting natural resources and the environment. soundofheaven.infolon. DIN , is mainly suitable for cor- rosion protection of small parts. The zinc which is present on the sur- face may also be exposed to corro- sion depending. Buy DIN METALLIC COATINGS - ELECTROPLATED COATINGS OF ZINC AND ZINC ALLOYS ON IRON OR STEEL WITH.


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DIN This standard applies to electroplated and Cr(VI)-free passivated zinc and zinc alloy coatings on ferrous materi- als. The zinc alloy coatings contain. Home; DIN Preview. DIN [ Withdrawn ]. Metallic Printed Edition + PDF; Immediate download; $; Add to Cart. Standards [Withdrawn]. DIN Metallic coatings - Electroplated coatings of zinc and zinc alloys on iron or steel with supplementary Cr(VI)-free treatment.

Prentice Hall PTI: The required process inspection and process testing accompanying production can typically be carried via stress tests on a sufficient number of suitable hydrogen-sensitive samples. It is possible to minimise the damage e. Sign In. Electroplated coatings The electroplated coatings consists of zinc or zinc alloys corresponding to Table 1. Grayboy Associates GSA: Post-treatments 6.

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Pdf din 50979

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Tyrell Press, Ltd. International Union of Railways UL: UL ULC: United Nations UNI: The U. Verband der Automobilindustrie VDE: Welding Consultants, Inc. World Scientific Publishing Co. Yakuji Nippo. DIN Edition, July Complete Document. Metallic coatings - Electroplated zinc and zinc alloy coatings on iron or steel with supplementary Cr VI -free treatment. Detail Summary View all details. Additional Comments: Price USD.

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Ask for rush delivery. Most backordered items can be rushed in from the publisher in as little as 24 hours. Some rush fees may apply. Add to Cart. People Also Bought These. People Also Bought These: This standard applies to electrodeposited zinc and zinc-alloy coatings on iron and steel with Cr VI -free passivation.

50979 pdf din

The main purpose of the coatings or coating systems is to protect iron and steel components against corrosion.

The standard prescribes the designations to be used for the above coating systems and specifies minimum corrosion resistances to be achieved in specified test procedures and the minimum coating thicknesses required to achieve them. Browse Publishers. In the case of undated references, the last edition of the document including all amendments referred to applies.

E DIN Electroplated coatings The electroplated coatings consists of zinc or zinc alloys corresponding to Table 1. Passivating Passivating designates the production of conversion layers by treatment with suitable Cr VI -free solutions in order to improve the corrosion resistance of the coatings. Colourations are possible. As chromium VI -free passivations are new systems, a new nomenclature according to Table 2 has been adopted.

Sealing Seals increase the corrosion resistance and usually have a layer thickness up to 2?

Products that can be removed with cold cleaner e. The effect of seals on the functional properties of the component, e. Essential areas functional area In the case of components with complex shapes, in particular components with hollow spaces, it is possible that the requirements for the resistance in the short-term corrosion tests and for the minimum thickness cannot be complied with in all areas of the electroplated surface.

In these cases, the areas essential for the surface protection must be marked with a dot-dash line on the drawing. Order data The customer must provide at least the following information to the coating company: Basic material, component manufacturing process, heat treatments; c Data on the essential areas in conjunction with 3.

If required, more detailed requirements for the coating properties and testing e.

DIN EN 锌及锌合金涂层_百度文库

If necessary, additional information on requirements or restrictions for the coating process can be given. Base materials The coating of components from low-alloy steels with coatings according to this standard is state-of-the-art.

If other iron-based materials are present e. The coating company therefore needs to have detailed information on the composition, properties and production process of the components to be coated. The impurities corrosion products or scale, oil, grease, dirt etc. An agreement concerning the surface quality might be necessary, if applicable.

Pretreatment and deposition of the zinc or zinc alloy coating In order to ensure a reliable process sequence, the complete pretreatment and coating process, physical data treatment times, temperatures as well as all process chemicals must be recorded, documented and optimised if need be. The individual process intervention limits as well as the frequency of the monitoring and analysis processes must be defined.

The resultant measures must be described and archived by the coating company. A typical process sequence is shown below: Post-treatments 6.

Passivations Passivations are conversion coatings and are created by immersing or spraying the components with passivation solutions. At the same time, the deposited coating reacts with the passivation solution to form a thin film protecting the metallic coating. Part of the coating is usually dissolved by the reaction.

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Layer accumulations can result, depending on the component geometry and process. These must be minimised, if possible, through suitable measures e. The components are introduced into the coating drums as bulk material then pretreated and provided with the coating while the drum is rotating. The drum rotation ensures that all components are coated comparably.

However, surface damage can result due to the movement of the parts. It is possible to minimise the damage e. Nevertheless, drum coatings usually yield a lower corrosion resistance than is the case with trestle coatings.

Trestle parts This involves parts which have to be coated on the trestle owing to their size, design or, possibly, special requirements. During this, the parts are coated while positioned on trestles. Depending on the position of the components on the trestle, different layer properties mainly layer thickness of the metallic coating can result Optimisation is possible, for example, by using component-specific trestles. The steel parts to be coated can absorb hydrogen during the electroplating treatment for creating coatings according to this standard, e.