China ceramic mug manufacturers : Various raw materials for ceramic coffee mugs (2)

 From Xinxiang Ceramic Mug Manufacturers,Porcelain clay is metamorphosed by mica and feldspar, in which sodium, potassium, calcium, iron, etc. are lost, combined with the change of water, which is called "Chinalization" or "KAOLINIZATION". Although there is no definite conclusion on the cause of the porcelain vitrification in the academic circles, it can be roughly considered that the feldspar was metamorphosed by the action of hot springs or water containing carbonic acid gas and the gas produced by the decaying plants in the marshland. This may be the reason why porcelain clay usually occurs near hot springs or lime beds. The melting point of porcelain clay is about 1780 degrees. In fact, the melting point of porcelain clay is slightly lower because it contains impure substances.

Pure porcelain mugs custom clay (kaolin) stock is not much, and the so-called pure porcelain clay, is not as strong as clay viscosity. Generally speaking, if the porcelain clay is observed under a microscope, most of it has a white silk like luster and glittering silver. It is a very small crystal. This is the so-called pure porcelain clay. In addition, it also contains the fragments of unmodified feldspar, quartz, iron ore and other rocks as the source of porcelain clay.

The composition of pure porcelain clay is SiO2 46.51%, Al2O3 39.54%, H2O 13.95%, and the fusibility is 1780 degrees.

The most advanced of custom ceramic mugs is porcelain. Which rock is the best for porcelain? Because porcelain must be white. As a result, we have to try our best to avoid the iron content which can make the ceramic coloring. The rocks with less iron content but mainly composed of silica and alumina are granite, granite porphyry, quartz porphyry, quartz trachyte and the hydraulic rocks formed by the disintegration of these rocks.

The granite and even quartz trachyte mentioned here (that is to say, in igneous rocks, it also contains more silica and alumina, but less iron molecules). They are mainly quartz and feldspar, and contain some mica and black green or black brown minerals rich in iron (iron oxide). If you look at the rocks carefully, you can see many transparent grains like glass and bright white or reddish grains like porcelain. The former is quartz and the latter is feldspar. Although the chemical compositions of the four rocks are the same, different rocks are formed because of the different sizes of feldspar and quartz. The granite is composed of relatively large grains (1 ~ 7 mm in diameter). Quartz trachyte is a kind of small grains of quartz and feldspar in the compact plain where no particles can be seen. Granite porphyry and quartz porphyry are between the two. They contain large grains of quartz in a compact plain. The difference in the structure of these rocks is mainly due to the length of time from molten magma to cold setting, in which granite is the longest, quartz trachyte is the shortest, while granite porphyry and quartz porphyry are cold solidified in the time between the two. The main reason is that ceramic raw materials are not completely melted at high temperature like rocks, and the required cold setting time is shorter, which is the biggest difference between natural rocks and artificial rocks, namely ceramics. Sometimes things with the same composition as quartz trachyte flow to the ground in a molten state and then suddenly freeze, so as to form glass without quartz, feldspar and other particles visible to the naked eye like the above-mentioned rocks, but form all the same glass, namely obsidian and barite. It can be seen that the essence of rocks and custom disney ceramic cups is the same, only the difference between natural and artificial.

In granite, there are many kinds of silica, such as semi granite and pegmatite granite. The grains of feldspar and quartz in the former are fine, while those in the latter are formed by extra large grains of feldspar and quartz. Some of them concentrate the same material in some parts and become pure quartz vein, or pure feldspar vein, and some are transformed into semi granite (in some places, the original semi granite is used as ceramic raw material).

China ceramic mug suppliers : Various raw materials for ceramic coffee mugs (1)

 From Xinxiang Ceramic Mug Manufacturers,The raw materials of ceramic mugs are mainly from rocks, which are mainly made of silicon and aluminum. This kind of rock is also used as raw material for ceramic mug, which is hardened by artificial heating, which is similar to the formation of igneous rock. Therefore, from the chemical point of view, the composition of the custom ceramic coffee mugs is no different from that of the rock. If it is a ceramic cup made of silicon and aluminum, the main raw materials are as follows:

1. Quartz - chemical composition is pure silica (SiO2), also known as silica. This kind of mineral has no stickiness even if it is broken into fine powder, which can be used to make up for the defect of excessive viscosity of ceramic raw materials. When the temperature is above 780 degrees, it is unstable and becomes tridymite, and begins to melt at 1730 degrees.

2. Feldspar is a compound mainly composed of silica and alumina, mixed with sodium, potassium, calcium, etc. There are many kinds of them because of their different components. Generally, some rocks with more feldspar are called feldspar, and some are named after their origin. Several representative feldspars and their compositions are listed in Table 1. The first three are pure theoretical components, while the latter contain all impure materials in rocks.

Albite and anorthite melt with each other in various proportions and become various feldspars. These are called plagioclase and their properties depend on the ratio of albite to anorthite. There is also a kind of orthoclase (K-feldspar) with the same composition but slightly different shape, which has been misinterpreted as orthoclase. In fact, this kind of feldspar should be called "microcline".

3. Porcelain clay (also known as "kaolin") - porcelain clay (h4al2si2o9) is the main raw material of wholesale ceramic mugs. It is named after the kaolin produced near Jingdezhen, the first kiln factory in the world. Later, the Chinese pronunciation of "kaolin" evolved into "kaolin" and became an international noun. Pure porcelain clay is a kind of white or gray white soft mineral with silk luster.

China ceramic mug manufacturers tell Formation and prevention of pinhole in ceramic mugs

 From Xinxiang Ceramic Mug Manufacturers,In the production of ceramic mugs, pinhole is a very common quality problem. In particular, the problem of pinhole is more serious. So what are the reasons for pinholes on ceramic mugs? How to prevent it?

The formation and prevention of pinhole on ceramic mugs can be divided into three reasons:

 1. The molding mold is too wet;

 2. The slurry is too viscous;

 3. The grouting speed is too fast.

Therefore, to solve the pinhole problem, we must make a general judgment from these aspects, and then analyze and solve the specific problems. If the mold problem, we should consider whether the mold frequency is too fast, or natural weather problems, or indoor drying equipment problems, or the mold has reached the use limit, need to replace a new mold.Custom ceramic coffee mugs

If there is a mud problem, it is necessary to comprehensively consider various reasons to solve the problem. Mud viscosity is not necessarily due to the small amount of water added during the grinding process or the problem in the proportion of other raw materials. It may be that the viscosity of the mud is affected by changes in weather and temperature. Therefore, it is necessary to comprehensively consider and solve the problem from various aspects.

Of course, the grouting speed should be comprehensively analyzed according to the specific environment, temperature and other factors.Wholesale sublimation mugs

Ceramic mugs with lid products have very complex molding factors, these factors affect and restrict the quality of products, so to learn ceramic technology, we must first develop the habit of thinking about problems from many aspects, which is the premise of learning ceramic technology.

Production process of ceramic coffee mugs china custom mug manufacturers

 From Xinxiang Custom Ceramic Mug Manufacturers,

1. Mugs Molding: making mugs mold with gypsum, in which the mugs body is a mold, and the mugs handle is a mold.

The mugs body mold is a machine press mold, the mugs body is pressed by machine; the mugs handle mold is a grouting mold, the mugs handle is made by hand grouting technology, and then the mugs handle and the mugs body are adhered together.

2. Washing blank: the rough part of the formed mugs body is washed flat and smooth.

3. Glazing: glazing the mugs.

4. Firing: the ceramic mug is fired at 1300 centigrade. After firing, it is our common white ceramic mugs.

5. Inspection object: the finished cup is classified according to the quality standard.

6. Flower baking: paste the paper on the wholesale white ceramic mugs, and then put the cup into the kiln for the second time firing at 800 degree. When 800 degree, it is just the melting point of the glaze and the ceramic pigment on the paper, so the ceramic pigment will penetrate into the glaze and finish the baking of the mugs.

7. Inspection sample: the quality of the mugs with baked flowers is inspected.

8. Packing.

Xin Xiang Ceramic Mug Manufacturers Co., Ltd located in Shandong province China, which is one of the most famous ceramic producing Area. After experienced 20 years of ceramic business and development, we become a professional and reliable ceramic mugs supplier. Our annual turn-over more than RMB300millons .Our factory have SEDEX audit, NBCU audit, Disney audit, Wal-mart audit ect......

Xinxiang company business include ceramic mugs, ceramic coffee cups,sublimation mugs, tea cups and saucers, fine bone china mugs, promotional mugs, eco cups, musical/melody mugs, color changing mug/magic cups, solid color mugs ,coated mug, dinnerware sets, tableware, couple mugs, plates, bowls ect, Materials: porcelain, stoneware, magnesia strengthen porcelain, fine bone china . There are variety designs and shapes for your selection, customers' own designs are welcomed.

How to bake pink glaze on ceramic coffee mugs correct

From Xinxiang Ceramic Mug Manufacturers,First of all, there are very bright colors, such as rose red and pure pink. These colors can be printed when printing floral paper, but the color will change when the flowers are baked at high temperature (the normal baking temperature is between 760 degree and 800 degree). Of course, the color of flowers can not be made by low temperature printing. The baking temperature of low-temperature flower paper should not exceed 180 degree. At such a temperature, the color agent will be cooled down without complete volatilization, so that any color printed on the paper can be retained. However, because the temperature of 180 degree can not reach the melting point of the ceramic glaze, the ceramic glaze does not have any change, which will make the pigment on the floral paper unable to penetrate into the glaze, but only cover the surface of the custom mug manufacturers. Therefore, such baked flowers are not complete. When washing the cup or using the cup normally, the color will fade. Moreover, although the ceramic color agent retains the bright effect when baking flowers at low temperature, some chemical substances remain because the colorant is not completely volatilized, which will more or less affect people's health when using cups. So we put an end to the use of low-temperature floral paper to make our products.

In addition, colors such as purple and red can't be printed. Because in the process of printing purple red, the gold red agent and other ceramic color agents need to be fused and printed. When baking flowers, the golden red agent needs to be baked at a higher temperature, otherwise the color of the golden red agent can not be reflected, while the baking temperature of other ceramic colorants is much lower, which will cause a lot of color deviation.china mug suppliers

Finally, we suggest that when some colors can not be printed, we would rather choose to redesign the manuscript rather than use other methods to retain these colors.

Some colors can't be printed on ceramic coffee mugs from china manufacturers?

 From Xinxiang Ceramic Mug Manufacturers,As like as two peas, the ceramic mugs design was received yesterday, and the ceramic cups, which are exactly the same as the design draft, are made in the form of ceramic coffee mugs. The printed pattern is not complicated at all, but the pattern is rose red, which can not be made in the regular ceramic cup flower baking process

Come on. Later, I could only modify the production plan with the guests.

In fact, such things often happen. Many customers who don't often purchase custom ceramic coffee mugs will design a beautiful cup for the factory to make, but later, because the designed color can not be made, the design cost of customers is wasted.

Why can't some colors be made? I've seen how the pattern on the ceramic cup is printed .The friends of this post must have a certain understanding of ceramic cup printing. The colors printed on the ceramic cup are all made of ceramic clay

Color agents are different from those used in paper printing, so the color that can be printed on the paper cannot be finished on the ceramic cup, especially after the ceramic cup is pasted, the process of high-temperature flower baking will be completed, which will cause some colors to change color or change color when baking flowers at high temperature

In the end, it can not reach the original expectation.

On various materials of ceramic mugs---white porcelain mugs china suppliers

 From Xinxiang Ceramic Mug Manufacturers,Our common ceramic cups are mainly white porcelain and reinforced porcelain. Today, let's first share some of the ingredients of white porcelain and the furnace atmosphere during firing.

White porcelain mug suppliers is made of raw materials such as Pengyang porcelain powder, quartz powder, raw gangue powder, Mashan soil, cooked talc powder, mature gangue powder, feldspar powder, coal gangue and other raw materials in proportion. It is fired by reducing flame furnace atmosphere at 1300 ℃.

The transparent glaze above white porcelain is the main glaze, because the white porcelain itself is white, there is no need to add milk white glaze to increase its whiteness, and the problem of pinhole is easy to appear in the firing process of custom white porcelain mugs after milky white glaze.

However, there are many factories using opalescent glaze, at this time, we should pay attention to each drying step in the production process to strictly control, at this time, the best way to prevent pinholes. In addition, the use frequency of the mold should also be noted, generally a set of mold can only be used 35 times. quite a lot

In order to reduce the production cost, the factory even uses a set of molds for 50 times. In this way, the products are not only easy to appear pores, but also have obvious mold lines. This is a very irresponsible performance of product quality.

White porcelain mug wholesale is a kind of medium grade material. White porcelain cup is mostly used in domestic promotional gifts and export business, which is the best selling material in the market.