Customized ceramic sublimation mugs are classified by material

Xinxiang custom ceramic mug manufacturer, Ceramic English (or China). Ceramics are various products made of natural clay and various natural minerals as the main raw materials through crushing, mixing, molding and calcining. The sublimation mugs is made of clay, and its classification is also different according to the clay. In the past, people called ceramics made from clay and fired at high temperature in a special kiln. Ceramics is the general term for pottery and porcelain. The traditional concept of ceramics refers to all artificial industrial products that use clay and other inorganic non-metallic minerals as raw materials. It includes various products made from clay or a mixture containing clay through kneading, shaping and calcining. From the roughest earthenware to the finest fine pottery and porcelain belong to its scope. Its main raw material is silicate minerals (such as clay, quartz, etc.) derived from nature, so it belongs to the category of "silicate industry" with industries such as glass, cement, enamel, and refractories. The main production areas of ceramics are Jingdezhen, Liling, Gaoan, Fengcheng, Pingxiang, Lichuan, Foshan, Chaozhou, Dehua, Zibo Ceramic, Tangshan, Beiliu and other places. In addition, Jingdezhen is my country's "Porcelain Capital".

Common ceramic materials include clay, alumina, and kaolin. Ceramic materials generally have higher hardness but poor plasticity. In addition to being used in food utensils and decorations, ceramics also play an important role in the development of science and technology. The ceramic raw materials are made by quenching a large amount of earth's original resource clay. The nature of clay is tough. It can be plasticized when it meets water at room temperature. It can be carved slightly dry, and can be ground dry; when it is burned to 700 degrees, it can be filled with water; when it is burned to 1230 degrees, it can be porcelain. corrosion. The flexibility of its usage has various creative applications in today's cultural technology. Invented pottery. Ceramic materials are mostly oxides, nitrides, borides and carbides.

Pottery material: Compared with porcelain, the texture of pottery is relatively loose and the particles are coarser. The firing temperature is generally between 900 degrees and 1500 degrees, and the temperature is lower. After firing, the color is naturally interesting, simple and elegant, and has become many artists One of the favorite modeling performance materials. There are many types of pottery. The common ones are black pottery, white pottery, red pottery, gray pottery and yellow pottery. Red pottery, gray pottery and black pottery use pottery clay with high iron content as raw materials, and iron pottery clay is red in an oxidizing atmosphere , It is gray or black in reducing atmosphere.

Porcelain material: Compared with pottery, porcelain has the characteristics of hard, dense, forbidden, high temperature resistance, and rich glaze. The firing temperature is generally around 1300 degrees. "Thin as paper", porcelain often feels noble and gorgeous, which is the opposite of the simplicity of pottery. Therefore, when many artists create ceramic works of art, they emphasize the distinct sensory enjoyment that the texture of pottery or porcelain brings to the viewer. Therefore, it is necessary to analyze and compare the characteristics of the two different materials before creation.

Custom sublimation mug manufacturers, the porcelain of the ceramic sublimation mugs can be roughly divided into high temperature porcelain (mainly white porcelain), medium temperature porcelain (stoneware), bone porcelain, strengthened porcelain, and magnesia strengthened porcelain. The white ceramic mugs are all high-temperature porcelains, and the colored glazed mugs are medium-temperature porcelains, which can also be called stoneware.

99 technical problems in the production of ceramic coffee mugs

Xinxiang Custom Ceramic Mug Manufacturer, In the process of making pottery, under various cumbersome processes, a slight negligence may result in a work that is different from the imagination, but these small flaws can actually be avoided, but these small flaws are too "small" and often make "careless" "My dears ignore it, or are regarded as alternative beauty, so they don't care about it, and they just leave it alone. Today, I will list these 99 small flaws to my parents. There was a slight surprise in sympathy, it turned out to be like this...

1. Ceramic Mug Deformation: the product presents a shape that does not conform to the prescribed design.

2. Ceramic Mug Mouth or handle is crooked: Refers to the mouth, ears, and the height of the mouth, ears, and the height of the mouth are uncomfortable, crooked.

3. Ceramic Mug Knots: raised tumor-like solid bodies under the glaze body.

4. Ceramic Mug Blank bubble: hollow bubble raised under the glaze body.

5. Ceramic Mug Mud: Defects caused by uncleaned mud and glaze residue on the blank.

6. Ceramic Mug Lack of mud: the phenomenon of incomplete body.

7. Ceramic Mug Glaze bubbles: small bubbles on the glaze surface.

8. Ceramic Mug Blister edge: a series of small bubbles on the edge of the product mouth.

9. Billet explosion: improper moisture control of the billet before entering the kiln, local spalling caused by firing.

10. Fried glaze: the phenomenon of product glaze cracking.

11.Ceramic Mug Cracks: refers to striated defects formed by cracking of blank and glaze. Including: A, cracks: cracks covered by glaze B, glaze cracks: refers to the glaze cracked but the body is not cracked C, glaze cracks: refers to the cracks of the body and glaze.

12. Caverns: holes created by the melting of fusible substances during the firing process.

13. Ceramic Mug Spots: colored stains on the surface of products, also known as iron spots.

14. Ceramic Mug Pores: small pores (or brown eyes, pig pores, pinholes) appearing on the glazed surface.

15. Dregs falling: there are saggers and ash particles on the glaze of the product.

16. Slag sticking along the bottom edge: there are small slag particles sticking to the edge of the bottom of the product.

17. Needle points-traces left by the support on the product.

18. Sticky scar: the defect formed by the bonding between the green body and the foreign object during firing.

19. Fire thorn: a yellowish brown rough surface caused by fly ash in the flame.

20. Glaze lack: Partial deglaze on the surface of the product, including: A. Pressed glaze: strip-shaped lack of glaze at the concave joint of the green body. B. Rolling (shrinking) glaze: Rolling on both sides of the glaze to form a middle gap glaze.

21. Orange glaze: The glaze is similar to orange peel.

22. Slime and glaze strands: the strand-like phenomenon of local raised body and glaze surface.

23. Thin glaze: Because the glaze layer is too thin on the surface of the product, the phenomenon of partial glaze is not bright.

24. Dirty color: the surface of the product shows unnecessary variegated color.

25. The color is not correct: the color of the same pattern is uneven or not bright due to lack of fire.

26. Defects in drawing lines: defects in lines and edges decorated with lines.

27. Picture defects: picture defects and improper color.

28. Sticky glaze of baked flowers: colored stains and glaze damage on the glaze surface of products during the baking process.

29. Dirty soles of feet: The soles of feet are stained by other impurities.

30. The color difference of the mouth and ear joint mud: the color of the mouth and ear joint mud is inconsistent with the color of the product itself

31. Dirty gypsum: The phenomenon of discoloration of the green body due to the adhesion of gypsum.

32. Blue gold: blue phenomenon due to thin gold layer.

33. Ceramic Mug Smoky: part or all of the products appear gray-black and brown.

34. Yellow shade: part or all of the product is yellow.

35. Glaze scratches: the phenomenon of streaks and partial loss of gloss on the glaze of the product.

36. Bumping: part of the product is impacted or incomplete (or flawed).

37. Rolling marks-arc-like marks produced in rolling or knife forming.

38. Wave pattern: The wave pattern on the glaze surface of the product.

39. Stale: the process of storing the blank in a suitable temperature and high humidity environment for a period of time to improve its forming performance.

40. Formulation of blank glaze: blank, the weight percentage of various raw materials in the glaze.

41. Sieve residue: refers to the percentage of the weight of the residue on the sieve to the total weight of the dry sample after the material has been sieved.

42. Fineness: refers to the size of solid particles. In ceramic production, it is customary to use the sieve residue of a standard sieve to express.

43. Forming: the operation of making a blank into a blank with a certain shape and specification.

44. Plastic forming: under the action of external force, a method of plastically deforming a plastic blank into a blank.

45. Knife compression molding: a method in which the plastic blank placed in the rotating plaster mold is squeezed, scraped and sheared with a molding knife to form a blank. 

46. Roll forming: A method of rolling the plastic blank in the model rotating in the same direction with a rotating roller head, and the blank is uniformly expanded by the rolling force to form a blank.

46, grouting molding: inject mud into the porous model, when the injection part reaches the required thickness, remove the excess mud to form a hollow injection part.

47. Solid grouting: The water in the mud is absorbed by the model, and the injection piece is formed between the two molds, and there is no grouting method in which excess mud is discharged.

48. Dry pressing molding: a method in which granular powder with a moisture content of less than 6% is placed in a mold and directly pressed to form.

49. Semi-dry pressing molding: a method in which granular powder with a moisture content of 6-12% is placed in a mold and directly pressed and formed

50. Isostatic pressing: a method in which granular powder is compacted and formed in an elastic soft mold under the equalized pressure transmitted by a liquid or gas medium.

51. Drying of the green body: the process of removing non-chemically bound water in the green body.

52. Drying system: In order to achieve the best drying effect, the drying time and speed of each stage of the drying process, the temperature and humidity of the drying medium and other parameters are stipulated.

53. Ceramic Mug Glazing: the operation of covering a layer of glaze on the surface of the body.

54. Male mold: refers to the raised working surface, used to form the model of the inner surface of the utensil.

55. Female mold: refers to the concave working surface, used to form the model of the outer surface of the utensil.

56. Plaster mold: a working mold made from gypsum as a raw material for forming green bodies.

57. Firing: The process of firing the green body into ceramic products.

58. Biscuit: the baking process of the green body before glazing.

59. Glaze firing: the firing process of biscuit slab after glazing.

60. Second firing: The firing method of the green body is first sintered and then glaze firing.

61. One-time firing: the method of firing the product with or without glaze directly without firing.

62. Firing system: In order to fire qualified ceramic products and achieve the best firing effect, the operating parameters of temperature, atmosphere and pressure in the kiln are stipulated.

63. Oxidizing atmosphere: The gas in the kiln has the ability to oxidize, and its excess air coefficient is greater than 1. The atmosphere in the kiln is called oxidizing gas

64. Reducing atmosphere: The gas in the kiln has reducing ability, and its air excess coefficient is less than 1, so the atmosphere in the kiln is called reducing gas

65. Neutral atmosphere: The gas in the kiln does not have the ability to oxidize and reduce, and its excess air coefficient is equal to 1. The atmosphere in the kiln is called a neutral atmosphere.

66. Air excess coefficient: the ratio of actual air consumption to theoretical air consumption during fuel combustion.

67. Firing cycle: the time required by the firing curve to complete during firing.

68. Kiln furniture: auxiliary refractory utensils for firing, such as saggers and slabs.

69. Saggar: a refractory container used to hold ceramic bodies during firing.

70. Shed plate: used to support the blank refractory plate or scaffold refractory plate during firing.

71. Ceramic decoration: beautify ceramic products with craftsmanship and decorative materials.

72. On-glaze color: Use on-glaze paint or decals made from it and other decorative materials to decorate the glaze surface of the product, and it is a decoration method that is baked at a temperature below 900 degrees.

73. In-glaze color: use pigments that can withstand a certain high temperature or decal paper made of it, decorate the glaze or the glaze surface of the product, and fire at the same temperature or close to the temperature when the glaze is fired , The decorative method in which the pigment sinks and fuses in the glaze.

74. Underglaze color: Use underglaze paint or decal paper made from it to decorate the surface of the precision blank, biscuit blank, and glaze blank, and then cover with a layer of glaze, after high temperature firing The method of decoration made.

75. Porcelain: In ceramic products, the matrix is vitrified or partly vitrified, the water absorption rate is not more than 3%, has a certain degree of light transmission, the section is delicate and shell-like or stone-like, and the knocking sound is crisp. Class products.

76. Fine Porcelain: A type of porcelain with fine matrix, smooth glazed surface, and water absorption rate not greater than 0, 5% by using good quality raw materials and meticulous processing.

77. Feldspar porcelain: feldspar-quartz-kaolin three-component porcelain with feldspar as the main flux in the body.

78. Sericite porcelain: Sericite-quartz-kaolin three-component porcelain with sericite as the main flux in the body.

79. Pottery: a kind of ceramic products with basic sintered matrix, non-density, water absorption rate greater than 3%, no light transmission, rough section and dull knocking sound.

80. The amount of lead and cadmium leached out: the amount of lead and cadmium leached out after the contact surface of ceramic products and food is soaked in acid medium.

81. Particle distribution: the weight percentage of different particle grades in powder or granular materials.

82. Thermogravimetric analysis: a method to record the weight change analysis of the sample during the heating process with time or temperature.

83. Mud thixotropy: When the mud is vibrated and stirred, the viscosity will decrease and the fluidity will increase. After standing for a period of time, the mud will thicken again.

84. Plasticity: A mud mass with an appropriate amount of water will deform without cracking under the action of a certain external force, and maintain its deformation performance after the external force is removed.

85. Drying shrinkage rate: The difference between the length of the sample after molding and the length after drying to constant weight is called the dry line shrinkage rate as a percentage of the length after molding; the difference in volume is called the dry body as the percentage of the volume after molding. Shrinkage.

86. Firing shrinkage: The difference between the length of the sample before and after firing is called the percentage of the length after drying to constant weight. The difference in volume is called the percentage of the volume after drying to constant weight. Shrinkage rate of fired body.

87. Bus shrinkage ratio: the percentage of the difference between the length of the sample after molding and the length after firing to the length after molding.

88. Firing temperature: the firing temperature that enables ceramic products to have the expected performance.

89. Firing range: For porcelain, it is the temperature range from vitrified into porcelain to below the softening temperature; for pottery, it is the temperature range corresponding to the upper and lower limits of the product's water absorption .

90. The melting temperature range of the glaze is the temperature range from the initial melting temperature to the mature temperature of the glaze.

91. Transmittance: the degree of visible light through ceramic products. It is usually expressed as a percentage of the amount of light transmitted through a 1 mm thick sample to the amount of light irradiated on the sample.

92. Glossiness: the reflective ability of the ceramic surface to visible light. It is usually expressed as the percentage of the intensity of the specular reflection to the intensity of the incident light.

93. Whiteness: the ability of ceramic products to diffusely reflect visible light. It is usually expressed as the percentage of the amount of diffusely reflected light from the sample to the amount of incident light.

94. Thermal stability (thermal shock resistance): the ability of ceramic products to resist sharp changes in external temperature without cracks or breakage.

95. Pores: the pores in the ceramic matrix.

96. Open pores: pores in the ceramic carcass that are open to the atmosphere. Closed pores-pores in the ceramic matrix that are not open to the atmosphere.

97. Total porosity: the sum of open porosity and closed porosity in the ceramic matrix.

99. Water absorption: After the open pores in the ceramic carcass are saturated with water, the weight of the sucked water is dried at 110 degrees for the sample.

The reason for the cracking of the ceramic mug body

Xinxiang Ceramic Mug Manufacturer, The main reasons for edge cracking include the following.

1. The drying speed of ceramic mug is too fast.

2. The lip of the vessel is too thin to withstand external force.

3. If a bulk ceramic mug utensil has just been made and cracks start to appear before it has gone through any important drying stage, it may be that the mud has been used too many times. It is also possible that the additional filler (clinker or sand) in the mud is too much. Sometimes, the recycled or reconstituted mud will become unusable because it is used too many times, such as Mud that has been drawn repeatedly on a billeting machine.

The widest part of the crack is on the lip of the vessel, which means that this is where the crack started. In the case of this type of cracking, the cause is uneven drying.

4. When glazing the ceramic mug body, when encountering a joint part with a large thickness gap, it is easy to cause the thinner part (usually the mouth of the book) to be too wet, and these parts will be in the later drying process. withstand external intrusion.

5. When the dried ceramic mug body is placed in a humid environment, the branded ceramic mug body will absorb water again. This phenomenon is quite special. Many custom ceramic mug factories personally seen an example of a semi-dry ceramic mug body that absorbs water again, and when the ceramic mug body softens to a certain extent, it is crushed by its own weight. When a dry blank is placed in a humid environment, the blank will expand while absorbing moisture again, which will cause tension in the parts where the thickness gap is large during the later drying process. Those ceramic blanks with relatively low clay content, such as some low-temperature white clay and porcelain clay, have too low green strength to withstand the tensile force generated during the re-absorption process, and many small cracks appear, and these small cracks are only in the It can only be seen after the bisque is burnt.

6. One of the most common reasons is improper trimming. The trimming tool must be very sharp and cannot be cut or scraped until the blank is semi-dry. When the ceramic mug body is too dry, its strength is very weak. In this case, the ceramic mug body is easily broken by the tool for repairing the personalized ceramic mug body. As mentioned earlier, small cracks on the outer surface of the ceramic mug body can multiply the pressure. Generally speaking, wiping the outer surface of the blank with a wet sponge after the trimming is completed can effectively prevent cracking.

7. In the field of industrialized production of ceramics, the cracking method on the edge of the plate is called "bird's beak", which is caused by improper trimming. Put the dry or nearly dry plate blank on the electric turntable, and use an "L" shaped blank trimmer to trim the edge of the plate at an appropriate angle. If the angle of the contact part between the trimming knife and the green body is not suitable, the knife edge will jump quickly and collide with or strain the outer surface of the vessel, and the resulting cracked ear sleeve will appear after firing.Many ceramic mug factory technicians have insufficient understanding of these issues.

The history of Tangshan bone china coffee mugs and how to custom

Xinxiang Custom Ceramic Mug Manufacturer, The English name of bone china is "BoneChina". It uses animal bone meal (ash) and quartz as raw materials. It needs to be fired twice at high temperature and low temperature glaze firing. The addition of animal bone meal makes this porcelain more rigid and translucent, but the greater the bone content, the more likely it is to burn during the production process, thus creating the rare and precious early bone china. For a long time, this kind of ceramic treasure has been regarded as a noble product, especially the beautiful and unique custom bone china mugs, which reflects the humanistic customs on the porcelain plate painting. It is deeply loved by the British royal family and has been listed as a leader for summit meetings in many countries tableware.

Bone china was first produced in the United Kingdom. According to records, around 1800, the British Thomas Frye accidentally mixed animal ashes in the manufacturing process and dramatically invented bone china. For more than 200 years, bone china has gradually developed into a world ceramic treasure through the hands of generations of master craftsmen.

In China, bone china has a history of nearly half a century. In 1964, Tangshan started the research and development of bone china, which was successful in 1973. Tangshan Bone Porcelain is the first in China, filling the gap in China's high-end porcelain production, and has obtained a national invention patent, opening a new era of China's bone porcelain development.

However, a catastrophe in 1976 destroyed all of this. The "7.28" earthquake destroyed all of Tangshan's ceramic industry. Unfortunately, many participants in the bone china project died, which caused the development of Tangshan bone china. A heavy blow, some precious texts and pictures have not been restored.

With the support of the state and localities, Tangshan Bone China was reborn soon after. In the 1980s, the people of Tangshan adopted the plastic extrusion ceramic forming method and successfully trial-produced the new microcomputer-controlled firing technology of the tunnel kiln. After that, two firing techniques were successfully developed. Soon, Tangshan bone china began to enter the international market. This kind of bone china independently developed and produced in China has a porcelain quality comparable to that of the British bone china.

With the improvement of people’s living standards, bone china, as a world-recognized high-end porcelain species, is increasingly sought after by people. Its market scale is gradually expanding. Shandong, Guangdong, Jiangxi, Shanxi, Sichuan, Fujian and other provinces have begun to produce bone. porcelain. However, Tangshan bone china still ocmugies a major position, accounting for about 80% of China's bone china production. It is the country's largest bone china production base.

In September 2011, to help improve the quality of Tangshan bone china products, Tangshan Inspection and Quarantine Bureau established the National Ceramic Testing Key Laboratory and became the governing unit and ceramics of the National Ceramic Testing Key Laboratory Alliance (China Huajian Ceramic Testing Alliance) Supporting product team leader unit. The laboratory's daily ceramic testing capabilities cover 42 domestic and foreign standards, and have obtained CNAS and CMA qualifications. Let the laboratory testing experts come to tell you what testing items need to be passed in the experiment to ensure that the bone china is both exquisite and high-quality.

The history of Tangshan bone porcelain coffee mugs is an important part of the history of Chinese bone porcelain mugs.

How to customize an espresso ceramic mugs?
Custom ceramic coffee mug suppliers from china

A novel custom ceramic coffee mug with interesting handles

 Xinxiang Custom Ceramic Mug Manufacturer, For someone who has never considered a career in ceramics, I think about mugs a lot. The shapes. The colors. The handles. The slope of the walls. The finish! (Matte? Glossy?) There's so much to consider! So much to admire! And after devoting a considerable amount of my time - read: every single morning and early afternoon - to such a mult i- faceted category, I've arrived at one conclusion: Novelty mugs are the only mugs I want to drink from. And the competition isn't even close.

You know the type: It's got thin walls that run straight up-and-down. A handle big enough for two or three fingers to comfortably hold. A glossy finish that says, "I'm dishwasher safe," and feels nice on the lips. A branded ceramic coffee mug that holds 11 ounces of liquid, which is enough to get you caffeinated without giving you the shakes. They're found in every gift shop, roadside rest stop, and airport from Albuquerque to JFK, plus places you find awesome second-hand vintage stuff, like antique stores and eBay, too. That means the coolest ones already exist, and that might make them sorta kinda better for the planet! 

In an era when artisan pottery made by hand with organic glazes and specialty clays are all the rage, nothing comes close to the standard issue mug. Artsy tall, thin ones with a narrow opening smack the bridge of my nose every time I sip. Short, squat ones pose a higher spill risk when walking. Ones with outwardly slanted walls double that spill risk. And don't even get me started on those "creative" handles: the comically large loops that compromise balance; the thick, heavy grips that turn every sip into a workout; the single "finger-sized" hole that no finger of mine ever seems to fit. High-design should never come at the cost of basic ergonomics!

But most importantly, a blank mug is a missed opportunity. Novelty mugs will never be boring. They go beyond a tasteful earth tone glaze to a look that actually says something. (Most of the time quite literally.) Think of the designs, think of the memories! I hear the groovy guitar and strings from Lost in Music every time I drink from my LISTEN TO SISTER SLEDGE mug. I proudly proclaim my dedication to faded denim and cowboy shirts with every sip of my cowboy Polo Beer mug. My 2001 Eastern Conference Final Philadelphia 76ers mug transfers all of Allen Iverson's game 1 energy into my coffee. My Maine mug is for nostalgic Mondays. Polar Skate Co. is for whimsical Tuesdays. And Wednesday is obviously for my Goodfellas diner sign. You know, for the "F you, pay me," kind of days.Also I want to custom personalized mug supplier.

The minute you start sipping your morning coffee from something a little less tasteful and a little more playful, we know you'll feel more joyful, more snug, more at ease even. That's because novelty mugs are made to pull on your heartstrings and remind you of happier times. That and, well, the really comfortable handle.

The history and manufacturing technology of bone china mugs

1. Introduction to China Bone Ceramic mugs

Bone porcelain, formerly known as bone powder porcelain, is also known as bone porcelain. Bone porcelain refers to the porcelain clay made by mixing bone powder with quartz, which is lightweight and milky white. When placed under light, the porcelain can be faintly transparent. During the production process, animal bone powder is added to the bone porcelain mugs, and it is internationally recognized that the bone powder content is between 43% - 45%, which is called high-quality bone porcelain mugs (FINE BONE CHINA)

Bone meal is made from beef, sheep, pig bones, etc Beef bone is preferred. This component can increase the hardness and transparency of porcelain, and its strength is higher than that of ordinary porcelain, so it can be thinner than ordinary porcelain. The higher the bone content, the easier it is to burn and crack during the production process, so the finished product is more expensive. The bone ceramic cup has a lightweight, dense and hard texture (twice that of daily porcelain), is not easy to wear and tear, has moderate transparency and insulation, and has a natural milky white color unique to natural bone powder.

The materials used for bone ceramic mugs are exquisite, with precise production and strict standards. Its regularity, whiteness, transparency, thermal stability, and other physical and chemical indicators require extremely high requirements. In the late 17th and early 18th centuries, porcelain has always been a patent in China. After the Industrial Revolution, modern Europe gradually developed its own porcelain making technology in the development of Venetian glass craftsmanship. They not only copied Chinese Blue and white porcelain and colored porcelain, but also developed many high-quality porcelain varieties.

In the 1980s, China successfully fired the first internationally recognized bone china mugs and exported it in large quantities. Bone china Chinese and Western tableware, with its high quality, style, and taste, has become a must choose porcelain for upgrading major star hotels. Famous catering units such as Beijing Shangri La Hotel, Beijing Hilton Hotel, Beijing Quanjude Hotel, Suzhou Sheraton Hotel, Qingdao Hardman Hotel, Zhongnanhai State Guesthouse, etc. have all adopted bone china products and won the love of consumers. Bone porcelain tea mugs, custom coffee mugs, family set tableware, and bone porcelain handicrafts have become ideal utensils for various companies and middle-class families, and are also the best gifts for relatives and friends. Bone china cups have gradually become the main consumer of high-end porcelain in China.

2.The Manufacturing Process of Bone China Mugs

The production of bone ceramic mugs mainly relies on silicon oxide, alumina, and calcium oxide. The higher the content of calcium oxide, the better the color. In nature, there are not many sources of calcium oxide, so animal bone meal is chosen as the source of calcium oxide. This is also the origin of the name of the bone china mug.

In fact, the so-called bone ceramic is a bone ceramic mug made from the ashes of herbivorous animals (mainly Ca3 (PO4) 2), mixed with high-quality kaolin, quartz and other auxiliary materials, and glazed at 1280 ℃. Generally speaking, adding 25% bone powder to the raw material can be called bone porcelain, but the best quality bone porcelain recognized in the world today is 45% -51% bone powder content, with cow bone being the best.

The production process of bone porcelain mugs includes grouting, molding, dehydration of gypsum molds, initial firing, glaze firing, and sticker baking processes. The bone porcelain cup is fired at high temperature to become a porcelain with high whiteness, high transparency, and delicate porcelain quality. During the firing process of wholesale ceramic coffee mugs, high requirements are placed on their physical and chemical indicators such as regularity, whiteness, transparency, and thermal stability, resulting in a high scrap rate. Due to the exquisite materials used, precise production, and strict standards, the price of bone porcelain cups is higher than that of other porcelain varieties.

The unique firing process and the addition of bone carbon eliminate impurities in the porcelain clay, making bone porcelain appear cleaner, more delicate, transparent, lightweight, with few defects, and thinner than ordinary porcelain. It has a special sense of cleanliness visually, and its strength is twice that of ordinary porcelain, which is twice that of daily porcelain. The higher the content of bone powder, the relatively lower the composition of clay, which is more prone to cracking during the production process. This requires higher technology in forming, increasing the difficulty of firing, making bone porcelain cups more precious.

There are also high-end porcelain such as shell porcelain and pearl porcelain, which are similar to bone porcelain. Due to their high cost and almost no industrial production, bone china mugs are recognized as the most high-end ceramic cups in the world.

3.Black spots in the production process of bone porcelain cups

The partial or complete appearance of black spots on the bone porcelain mug is called "smoking". This defect is due to incomplete oxidation or premature reduction of the body, which causes the carbon organic matter and low-temperature carbon deposits in the body of the bone ceramic mug to not be completely burned, and is sealed by the glaze layer. The surface of the bone ceramic cup is gray.

The factors affecting smoking analyzed by  Ceramic Mug Manufacturer include:

1).During the oxidation stage of low and medium heat insulation, the oxidation is incomplete and some carbon remains in the body, resulting in a grayish black cross-section of the body. Especially when clay containing a large amount of carbon, such as coal gangue, is used in the body, the carbon in the body should be fully oxidized before the glaze layer melts. For products without carbon in the billet, oxidation should also be strengthened during the medium heat insulation stage, and special attention should be paid to coal fired intermittent kilns and thick tire products. This is because in intermittent kilns, the temperature inside the kiln is low and there is a lot of water vapor during ignition. In addition, the flue gas temperature is low at this time and the chimney suction force is weak. During the short period of time when adding coal and prying the furnace, the flame nature inside the kiln is a reducing atmosphere. At this time, not only can the carbon inside the billet cannot be eliminated, but it also causes carbon deposition on the billet. Especially when the moisture content of the billet entering the kiln is high, it is more likely to cause black spots on the bone porcelain mug. So, during the medium heat insulation stage (usually between 1000~1100 ℃), it is necessary to maintain a strong oxidizing atmosphere and have sufficient insulation time. That is to say, in the kiln operation, the thickness of the ash layer, fire layer, and coal seam on the furnace grate should be controlled to ensure good ventilation, a large excess air coefficient, a clear fire layer in the combustion chamber, and every time the coal is added, it must be burned thoroughly to fully oxidize the billet. Otherwise, if the amount of coal added is too high, the ash layer is too thick, the ventilation under the furnace is poor, and the combustion is not thorough, the flue gas containing free carbon generated in the combustion chamber will be stored in the kiln for a long time. At this stage, the porosity of the green body is the highest, and the adsorption is strong, making it easy to adsorb the flue gas, resulting in carbon deposition.

2). In the later stage of the reduction stage, the reduction atmosphere is too thick, that is, when the glaze has melted, the kiln still maintains a strong reduction atmosphere without timely turning into a weak reduction or neutral atmosphere, and the product is still in the reduction atmosphere. Therefore, CO in the flue gas decomposes at high temperatures, causing surface carbon, especially when using calcium glaze. Due to the severe carbon absorption phenomenon of CaO, the glaze smoke is most likely to form.

3). Analysis of Blackening of Bone Porcelain mug: The glaze formula is unreasonable. If excessive CaO or other fluxes are used, the glaze will prematurely produce liquid phase and melt, the vitrification range is too narrow, making it difficult to burn out the deposited carbon in a timely manner, or the temperature difference in the kiln is too large to ensure the atmosphere change of the bone porcelain mug, causing some products to be in a chaotic atmosphere or excessive sulfur in the fuel. If the sulfur containing gas stays in the kiln for too long, the sulfur will strongly seize the oxygen in the flue gas, making the reducing atmosphere thicker, Easy to produce smoke defects.

4.Daily maintenance methods for bone porcelain mugs

After drinking coffee or tea using bone china cups, we need to clean them. Because bone china mugs are thin and have a high whiteness, they are harder to clean than cheap sublimation mugs.

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Learn to Handcraft a Ceramic mug With Xin Xiang Ceramic mug Manufacturer

Xinxiang Custom Ceramic Mug Manufacturer, Xin Xiang Ceramics is still plugging away even in quarantine, constantly practicing and perfecting his craft as he produces textural mugs, bowls and stoneware by hand. In an exclusive three-minute-long clip for Youtobe, Xin Xiang hunkered down in his Echo Park studio to demonstrate the process of shaping one of his signature ceramic mugs.

To begin, Xin Xiang wets the clay and sets it on the wheel, pulling the earthy lump as it spins until it becomes a pointy obelisk, which he then condenses into a dome. With his index finger and thumb, Xin Xiang creates an indentation that becomes the interior of the mug, gently tugged upwards until slim sides take shape.

Once evened out, the excess clay is removed and the mug is lifted from the wheel. "Remember not to be precious about what you make," Xin Xiang advises.""Cause you can always recycle clay and start over." To emphasize the point, Xin Xiang squashes the mug, rolling it back to its lumpy origins to start the process anew.

Whether you're a pottery expert or would rather take pottery classes before buying a wheel, take notes as you watch Xin Xiang craft a mug below.

Zibo Ceramic Mug Manufacturer think:Customized ceramic mugs, as the name implies, are what most people envision when you say "coffee mug." Traditional, but not boring, these mugs are present in most kitchen cabinets. Often crafted from ceramic with a sturdy rounded handle and available in various sizes, the classic mug can feature different prints, slogans, sayings, or images, or be finished in a simple solid glaze. Classic mugs are usually microwaveable and extremely durable. Ceramic mugs can be heavy and may be prone to staining if light in color. The wall thickness of classic mugs can range from relatively thin, though not as thin as a china teamug, to very thick, such as common restaurant and diner mugs.