Applications of Porcelain Enamel Frit

Available in a variety of colors to harmonize or contrast with the vision area, the porcelain enamel frit is applied to the surface of the glass. Porcelain enamel frits contain finely ground glass mixed with inorganic pigments to produce a desired color.

The coated glass is then heated to about 1,150°F, fusing the frit to the glass surface, which produces a ceramic coating almost as hard and tough as the glass itself. A fired porcelain enamel frit is durable and resists scratching, chipping, peeling, fading and chemical attacks.

Spandrel glass can be installed monolithically, using insulated metal backpans, but is more often found as a component of an insulating glass unit. Reflective spandrel glass units are widely used when a uniform all-glass look is desired for the building exterior. Typical applications include commercial fixed windows, curtain walls, storefronts and wall cladding. Spandrel glass is traditionally an opaque material not intended for use in vision areas.

This article comes from obe edit released

Noli Porcelain Enamel Solution for Oven Part

For customers who manufacture gas stove or oven part made by 0.5mm to thickness high quality low carbon steel, Nolifrit can supply them with high quality porcelain enamel frit meet with Europe RoHS and US FDA standard. Also with very nice heat resistance and thermal shock resistance. Effectively solved fish scale problem and at the same time, it has very strong adherence.

We also have one-stop solution service to supply you with suitable products, include our porcelain enamel frit, enamel pigment, milling additives, degreasant and adherence promoters. Those product can be purchased all together from Hunan Noli Enamel Co., Ltd.

We can offer technical guidance and after-sales service. Simultaneously, we can also customize the color and porcelain enamel coating for our customers. To satisfied the personalized requirements.


Typical Case:

One of the top 10 manufacturers of home appliance in Egypt.


Weak adherence of oven part

Nolifrit Solution:

Use three types of porcelain enamel frits (high+ mid+ low temperature) mixed,to expand the firing temperature range.

And prolong the firing time.


Problem solved after customer take our advice:


     Before(Weak adherence)                   After(Strong adherence)

Hunan Noli Enamel Co,. Ltd is the leader manufacturer of porcelain enamel frit and enamel powder in China. Focused on enamel coating for almost 30 years.

We can offer very professional technical guidance and product solutions. To solve the problems our customers will likely face in their production. We have successfully solved most of the problem of our customers, which makes us with very good reputation and build up the profound trust between us and our customers.

Porcelain Enamel frit Benefits

Porcelain enamel frit is an inorganic, glassy coating fused at high temperatures to form a mechanical and chemical bond with a metal substrate. The glass is permanently fused to pre-formed metal in a furnace under temperatures as high as 1550°F. Molten glass and red-hot metal are inseparably bonded to form a rock-hard finish, which will not scratch, rust, fade, or peel.

The main ingredient in porcelain enamel frit is a product called “frit.” There are literally hundreds of frit formulations. The most important basic ingredients include silica, borax, soda ash, fluorspar and sodium silica fluoride. There are numerous additives such as clays, electrolytes, and metal oxides to suspend the glass, provide the desired color, and enhance the properties such as heat resistance and bond.

Porcelain enamel frit can be made with many metals, including cast iron and aluminum. However, over 85% is used on steel.

The glass properties of the porcelain enamel frit finish make it superior to organic materials, such as paint. It is a hard, scratch-resistant coating that remains colorfast and glossy after years of use. It’s smooth, glassy finish cleans easily and is resistant to acidic and alkaline chemicals. Porcelain enamel frit is extremely heat resistant, generally able to withstand temperatures up to 1000°F.

This article comes from roeschinc edit released

Porcelain Enamel Frit


Enamel (or vitreous enamel or porcelain enamel in U.S.) 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.


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Chemical Properties

1) Enamel powder often is applied as a paste, and may be transparent or opaque when fired; vitreous enamel 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-enamel steel.

2) Color in enamel 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. Enamel can be either transparent, opaque or opalescent (translucent), which is a variety that gains a milky opacity the longer it is fired. Different enamel 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.

This article comes from reade edit released