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 The success of Surface World Live 2017!

 

We know how to deal with liquids

Tapflo's experience and knowledge offer a selection of pumps and filters that have perfect application within today’s surface treatment industry by manufacturing pumps able to meet the requirements of each surface treatment process. With fewer hands between the manufacturer and end user, the price and availability of Tapflo pumps are a great strength, making Tapflo the leading and most competitive industrial pumps suppliers in the UK. 

 

Creating a safe process

The application of Tapflo pumps to the surface treatment industry covers sectors such as galvanisation, plating, degreasing, pickling, coating/painting, and etching. Many hazardous chemicals are used in the process of these surface treatments. A relevant issue is to provide a safe environment throughout the process from pre-treatment, surface treatment, after treatment to waste handling. This involves encapsulation and automatization of the process and handling of chemicals. Safe and reliable pumps and filters are important components to creating a safe process.

 

 

Surface Treatment Solutions 

 

Process example

Duties for our pumps & filters

Electrolytic zinc plating Copper, Nickel, Tin, Silver and Gold plating

Alcalic zinc

Zinc-iron

Zinc-nickel

Hexavalent Chromium-free plating

Chromates/Passivation

Acid zinc

Chemical nickel

Anodic coating

Organic coating

Degreasing bath

Pickling bath

Alkaline bath

Acid bath

 Electro-plating bath

Waste from bath

Drum handling

  Filterpress feeding

 

 Industry insight - The process behind the final product

Galvanisation

Galvanisation is the coating process most used to prevent the corrosion of iron and steel. The process consists of coating the metal with a layer of zinc by submerging the metal in a bath of molten zinc at high temperature (about 450 °C). Galvanisation is achieved when the metal gets in contact with the hot zinc, creating a metallurgical reaction that produces a series of zinc-iron alloy layers on the surface of the metal. The final product is a protective zinc coating that protects the iron or steel from harsh environments by preventing rusting. To secure the metallurgical reaction and achieve good quality coating, the surface of the metal has to be chemically clean. The preparation of the surface is essential before galvanising and types of contamination like grease and dirt are removed by a variety of processes. The most common practice of surface cleaning is named decreasing. The metal is first dipped in an alkaline or acidic solution and then rinsed in cold water to avoid contaminating the rest of the process

 

Plating

The metal plating process involves creating a thin layer of metal (nickel, copper, chromium or other metal) that coats a substrate. Metal plating provides many benefits to products made from metal and other materials, including inhibit corrosion and enhance appearance. The plating manufacturing process that can be achieved through electroplating, which requires an electric current, or through electrolysis plating, which is in the autocatalytic chemical process. In either case, the technique results in one or several of the following benefits:

  • Improved corrosion resistance
  • Decorative appeal
  • Increased solderability
  • Enhanced strength
  • Reduced friction
  • Altered conductivity
  • Enhanced paint adhesion
  • Increased magnetism 

 

Decreasing

Degreasing covers a wide range of applications across almost every conceivable industry, particularly in wash bays for metals. In the decreasing process anti decreasers, chemicals are used to remove dirt, oil and other inorganic material from surfaces. Acid and alkali degreasers remove oils and other soils through aggressive chemical reactions. These, are toxic acids that require a safe handling and automatization processes to avoid harm to human and minimise the environmental impact.

 

Pickling

Metal pickling is one of several pretreatment steps available for preparing metals for further processing such as passivation or electropolishing or to perform a superior cleaning operation of welded structures. Pickling is typically performed to remove tightly adherent oxide films, or scale, resulting from hot-forming, heat treating, welding and other high-temperature operations. In many cases, pickling of stainless steels is performed in two steps, one for softening the scale and one for final scale removal. Over-pickling, under-pickling and pitting usually are the direct results of lack of control over process variables including acid concentrations, solution temperature and contact time.

 

Coating and Painting

Coatings provide two primary functions—decoration and protection—that are of considerable economic importance. Without coatings, product lives might be shortened drastically and many products would not even be marketable. Most of the remaining coatings, called "special purpose," are used for miscellaneous applications such as traffic paints, vehicle refinishing, high-performance coatings for industrial plants and equipment, and protection of marine structures and vessels. These are usually applied outdoors in ambient conditions.

 

Etching

Chemical milling, photo etching or the metal etching process is a very specific and controlled method of manufacturing parts and components, as part of the large industry that is subtractive manufacturing. The etching process involves utilising temperature controlled etchants, such as ferric chloride, which by eating away the design on the surface pf the metal previously printed. The designs are left exposed to the acid, while the rest of the metal is protected by a photoresist. The end result can produce items that look like they have been engraved or parts that are formed from one sheet of metal, no matter how intricate or complex the design.