Surface treatment

Corrosion protection, appearance, or functionality—the right surface treatment directly impacts product quality. This section introduces key techniques and supports buyers in evaluating offers and technical specifications effectively.

• Blacking

  Brunning is a surface process for producing a black protective layer on iron-containing surfaces. The aim of the bronification is primarily to protect against corrosion, whereby a decorative, antique appearance is frequently also achieved. The Breasting is defined in the standard DIN 50983 and is usually based on the immersion of the workpiece to be treated into an acidic or alkaline solution, the broaching agent. This process forms a black mixed oxide layer on the surface of the workpiece, which is also referred to as “stainless grate”. Black-oxideating is therefore not a coating, but a conversion of material.

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• Anodizing

  The anodizing is a process for surface treatment of aluminum. By means of anodic oxidation, a protective layer can be produced on the metal, which prevents the natural, uncontrolled oxidation of the metal by reaction with oxygen from the ambient air. The special feature of the method is that, unlike for example in, no layer is applied, but a conversion of the uppermost aluminum layer takes place. This layer serves not only for corrosion protection, it can also be colored by means of an additional process step. Resistance and optics of the anodized layer can be influenced by the suitable choice of the process parameters.

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• Deburring

  In industry, deburring refers to processes for removing edges, splitters and fiber-optic elements on workpieces – the so-called ridges. The method serves on the one hand to ensure the operability of machine elements and on the other hand to reduce the risk of injury. Processes of deburring are predominantly used in the metal and wood processing industry, but are also used in the production of plastic parts. Depending on the shape, material and dimension of the component, different methods are used for removing the burr.

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• Electroplating

  The electroplating (also electroplating) is a process from surface and layer technology for electrochemical deposition of metals on metallic or metallized surfaces using an electrolyte and direct current. The galvanic coating usually serves to protect the workpieces from corrosion or to increase the wear resistance of their surface. The method is particularly often used for coating steels with metals of a suitable property profile. Such metallic coatings have a wide field of application since they obtain the metallic appearance of the workpieces and the electrical conductivity.

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• Laser engraving

  The laser engraving is a method of surface treatment using a high-energy laser beam for marking, marking or decoration of objects. The contactless method is characterized by high automation, durability and flexibility. The laser marking scores through versatile applications and is therefore very popular across the industry. engravings can be applied to many different materials and prove to be particularly durable and durable. Typical application areas are, for example, the production of type plates or the numbering of individual parts in series production.

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• Powder coating

  The powder coating is a coating process for conductive or conductive materials. In the process used above all for steel and aluminum, a powder coating is applied to the pretreated surface and subsequently crosslinked under the action of heat. The powder coating protects the substrate from corrosion and scratches. In addition, the method of surface technology is used to influence the optical and functional properties of workpieces. Powder-coated products can be found in the following areas: Doors and windows Facade construction Machine and vehicle components Household nurses (white goods)

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• Sand blasting

  The sandblasting is one of the processes of surface treatment and is mainly used for removing rust, soiling, colour residues and other impurities. In the method, a blasting agent is thrown at high speed onto the surface to be treated. Sandblasting enjoys great popularity in the metalworking industry and in construction. On the one hand, the method can be used for efficient removal of impurities and for the preparation of surfaces, but on the other hand also serves for the production of optical effects such as, for example, the matting of glass or stone surfaces.

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• Trowalizing

  The trolling is also referred to as sliding grinding or sliding cutting and is a separating method of surface machining. In this case, metal workpieces together with a grinding means are usually introduced into a rotating drum in order to remove material in a targeted manner. Trowalization is described in the DIN 8589 standard, together with the lapping and polishing, and is referred to as sliding panels. The process is very popular in the metal processing industry, as it can perform several tasks from and rounding over smoothing and polishing to matting and grinding. The desired result of the surface treatment can be brought about in a targeted manner by the variation of the machines and grinding means used.

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