Descriptions of porcelain frit

Chemical Properties

1) Porcelain frit powder often is applied as a paste, and may be transparent or opaque when fired; vitreous porcelain frit can be applied to most metals. It has many excellent properties: it is smooth, hard, chemically resistant, durable, can assume brilliant, long-lasting colors, and cannot burn. Its disadvantages are its tendency to crack or shatter when the substrate is stressed or bent. Its durability has found it many functional applications: early 20th century advertising signs, interior oven walls, cooking pots, exterior walls of kitchen appliances, cast iron bathtubs, farm storage silos, and processing equipment such as chemical reactors and pharmaceutical chemical process tanks. Commercial structures such as gas stations, bus stations and even Lustron Houses had walls, ceilings and structural elements made of porcelain frit steel.

2) Color in porcelain frit is obtained by the addition of various minerals, often metal oxides cobalt, praseodymium, iron, or neodymium. The last creates delicate shades ranging from pure violet through wine-red and warm gray. Porcelain frit can be either transparent, opaque or opalescent (translucent), which is a variety that gains a milky opacity the longer it is fired. Different porcelain frit colors cannot be mixed to make a new color, in the manner of paint. This produces tiny specks of both colors; although the eye can be tricked by grinding colors together to an extremely fine, flour-like, powder.

Typical Applications

1) Architectural panels

2) Barbeques

3) Bath-tubs & shower trays

4) Hot water boilers

5) Cooker panels and ovens

6) Grills & pan supports

7) Microwave ovens

8) Washing machine drums and housings

Description

Porcelain frit is the colorful result of fusing powdered glass to a substrate by firing, usually between 750 and 850 degrees Celsius. The powder melts and flows and hardens to a smooth, durable vitreous coating on metal, glass or ceramic.

This article comes from reade edit released

Characteristics and uses of industrial inorganic pigments

Have you ever heard about inorganic pigment? If you have recently painted your house or automobile, then you will aware of this term. Paint is usually derived from the powdered industrial inorganic pigments. Each color has its own unique set of the attributes. When you research well, you will become familiar with the strengths, distinctive natures of your pigment.

Industrial inorganic pigments significantly change our surroundings. They are irreplaceable for the coloring of construction materials – their applications range from concrete to artist’s colors, from industrial paints to toners in photocopiers, from coloring in foodstuffs to raw materials for catalysts.

Industrial inorganic pigments have been utilized by mankind since ancient times, and are still widely used to colour materials exposed to elevated temperatures during processing or application.

This article comes from issuu edit released

 

What is porcelain enamel coating?

Porcelain enamel (also called vitreous enamel or glass-lining) is an engineered boro-silicate glass layer, which may be applied in a liquid or powder form and fused on a metal substrates, like mild steel, cast iron, stainless steel, aluminum or copper.

This inorganic coating was already used by the Egyptians for art and jewels around 1000 B.C. and may be characterized by a number of unique chemical and mechanical properties, like :

  • Color stability (during many years)
  • Corrosion resistance (even against boiling water !)
  • Easy-to-clean
  • High temperature resistance
  • Scratch resistance

Porcelain enamel on mild steel (Also called ceramic steel or glass on steel) has been adopted by many different industries all over the world and is nowadays used for providing a functional and/or decorative coating to a wide range of products, such as architectural panels, bath-tubs, barbeques, boilers, chemical vessels, cookers, heat-exchange panels & tubes, hollowware, microwave ovens, street signs, water heaters, washing machines, etc.

This article comes from ditmer edit released

Porcelain Enamel Coatings

Porcelain enamel is an inorganic-type coating, which is applied to metals or glass for both decorative and functional purposes.

This coating is a silica-based solidified glass mass obtained by high-temperature firing (temperature can range between 450 and 1200 °C depending on the substrate).

Porcelain enamel coatings differ from ceramic coatings mainly by their glass structure and dilatation coefficient, and from organic paints mainly by the inorganic nature of the matrix and the chemical bond that exists between the coating and the substrate.

This article comes from mdpi edit released