GEOBLACK® is used for corrosion protection of fasteners and other metal parts in any industrial sector looking for a glossy black finish and excellent anticorrosion performance. 

It combines the high performance of GEOMET® with a uniform black finish and is resistant to chemical attack. Like GEOMET®, it is free of chromium VI, which makes it ideal for the automotive sector. It also complies with both REACh regulations and directives 2000/53/EC and 2002/95/EC on health and the environment, as well as sharing the resistance to the salt spray chamber test (1000 h. CNS). This black anticorrosion coating is suitable for all types of parts, including threaded parts.

It is a non-electrolytic protection system that can be used on all types of metal parts, whether threaded or not, especially steel parts. This coating system consists of nonhydrogenating zinc and aluminum foils that are cured at low temperature (240ºC), which reduces the influence on the structure of high strength steels. It offers cathodic corrosion protection, which means that it acts as an effective barrier against white corrosion, and is capable of withstanding relatively high operating temperatures (150ºC). In addition, this system is resistant to chemicals and allows repetitive unscrewing and screwing without excessive deterioration. 

It also allows color post-treatment, which increases corrosion protection, chemical resistance and, if necessary, lubrication. In addition, it complies with environmental requirements and does not contain polluting heavy metals such as Cr 6+, Pb, Cd or Hg. It has been certified by Germanischer Lloyd for use in wind energy applications, both onshore and offshore, and has been approved by leading wind turbine manufacturers for its resistance to salt spray (C5-Marine 1500 h.) and coefficient of friction (0.09 - 0.14). 

Depending on the thickness applied, values between 480 h. and 1000 h. without red rust can be obtained in the neutral salt spray test according to ASTM B117. In addition, with the application of sealants such as DELTA-SEAL®, these resistance values can be increased, as well as the thickness which can be adjusted to meet metric thread tolerances according to ISO 965.

La galvanización en caliente es un proceso de inmersión en un baño de zinc fundido a 450°C que produce capas de aleación Zn-Fe de gran adherencia en las piezas metálicas. Aunque este baño proporciona protección galvánica contra la corrosión, el espesor de la capa de zinc puede reducirse en función de las condiciones externas. Aunque sigue siendo el método más utilizado en la construcción y mobiliario urbano, los nuevos sistemas de recubrimiento están ganando terreno debido a su menor costo y a la facilidad de aplicación en elementos roscados.

Coating of metal surfaces used to improve their resistance to corrosion and wear. It consists of several thin layers of zinc and aluminum, which are applied to the metal surface by an electrochemical deposition process. This process produces a uniform and homogeneous layer that provides excellent corrosion resistance, even in highly corrosive environments, such as exposure to salt water or environments with high humidity levels. 

In addition to its corrosion resistance, Geomet A coating also provides high wear and abrasion resistance, making it particularly suitable for parts that are exposed to friction and mechanical wear.

Recubrimiento de superficies metálicas utilizada para mejorar su resistencia a la corrosión y al desgaste. Se compone de varias capas finas de zinc y aluminio, aplicadas mediante un proceso de deposición electroquímica. Se utiliza comúnmente en aplicaciones donde se requiere una mayor resistencia a la corrosión y al desgaste en comparación con otros recubrimientos de metal, como el zinc o el cromo. Este tipo de recubrimiento es adecuado para piezas expuestas a ambientes corrosivos y entornos con alta humedad, como en la industria marítima, la construcción, la industria petrolera y en equipos eléctricos y electrónicos.

Además de su resistencia a la corrosión y al desgaste, el recubrimiento Geomet B también es resistente a la decoloración y al envejecimiento, lo que lo hace especialmente adecuado para aplicaciones en las que se requiere un alto rendimiento a largo plazo.

It is a black passivated zinc electrolytic coating that complies with the 2000/53/CE and RoHS directives, and with the strictest environmental regulations as it does not contain hexavalent chromium (Cr VI). This coating can be further treated to increase its corrosion resistance. If a thick black passivate (10 µm) is applied, the resistance time to the appearance of oxides in CNS environments can be extended. In addition, applying lacquers can also significantly increase corrosion resistance. However, this coating is not recommended for highstrength steels (10.9, 12.9) and parts with hard spring washers due to the risk of hydrogen embrittlement.

Se trata de un recubrimiento electrolítico de zinc con Cr III que presenta un color amarillo iridiscente. Este recubrimiento es comparable al antiguo cincado bicromatado amarillo hexavalente en cuanto a su resistencia a la corrosión. Este recubrimiento no contiene cromo hexavalente, lo que garantiza su cumplimiento con la mayoría de las directivas medioambientales. Es importante tener en cuenta que, debido a su naturaleza electrolítica, no es adecuado para piezas de acero de alta calidad.

It is an electrolytic plating process in which a layer of trivalent chromium zinc is deposited on a metal part. This process is a more environmentally friendly and less toxic alternative to hexavalent chromium zinc plating, which is highly polluting and hazardous to human health. Cr III zinc plating has similar anti-corrosion properties to Cr VI zinc plating and can be used as a base for subsequent treatments, such as the application of paints or lacquers to further improve its corrosion resistance. However, it is important to note that Cr III zinc plating may not be suitable for high quality steel parts due to the risk of hydrogen embrittlement.

El pavonado es un tratamiento que se aplica a superficies de acero o hierro para evitar la oxidación. Se utiliza un producto de color negro o café que se aplica como un barniz. Hay distintos métodos para realizar el pavonado, incluyendo el oxidado electrolítico, baños con sales metálicas oxidantes y pinturas. Después de la aplicación del tratamiento, es necesario realizar un pulido para obtener un acabado uniforme. El ácido ferrosoférrico que se forma actúa como una capa protectora para prevenir la oxidación del metal subyacente.

Este tratamiento consiste en la aplicación química de una capa no metálica de fosfatos de zinc sobre superficies metálicas. El resultado es una apariencia gris oscuro-negra con una textura uniforme que presenta micro-cavidades y capilaridades que permiten la adhesión de aceites, lacas o pinturas para mejorar su resistencia a la corrosión. Si no se aplican estos tratamientos posteriores, la resistencia a la corrosión es limitada. El tratamiento de fosfato de zinc se utiliza principalmente como preparación para tratamientos posteriores o en combinación con un aceitado posterior.

JS-500 is a coating for metal surfaces used to improve their resistance to corrosion and abrasion. It consists of a uniform layer of zinc manganese phosphate, which strongly adheres to the metal surface and provides excellent protection against corrosion and wear. This coating is widely used in the automotive, construction and other industries that require durable, corrosion-resistant metal parts. In addition, the JS-500 coating is an economical and easy-to-apply solution for companies seeking high-quality protection for their metal parts.