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The ceramic products molding process is inseparable from high-temperature firing. The kiln is a core equipment of the entire ceramic production line, directly affecting the ceramic quality, yield, and energy consumption level. For ceramic manufacturers, correctly mastering the use of kilns is the key to improving production efficiency and controlling costs. Yutai will help you understand ceramic kilns and how to use a kiln for ceramics, and introduce you to our automated kilns.
Kiln’s Basic knowledge
Kilns are core equipment for the high-temperature firing of ceramics. They can be divided into many types according to structure and purpose:
Tunnel kiln: ideal for large-scale continuous production, high heat recovery rate, perfect for automated wiring
Roller kiln: conveyor belt structure, design for medium and high-speed production lines, fast heating and cooling speed
Shuttle kiln: accommodates multi-category, small-batch production and ensures flexible operation.
Yutai focuses on automated ceramic kiln equipment research, development, and manufacturing and can provide customized solutions according to production line needs to improve production efficiency and firing quality.
Precautions before the ceramic blank is put into the kiln
The preparation work before firing directly affects the firing effect, mainly including:
- The ceramic blank must be thoroughly dried to avoid cracking due to residual moisture.
- When loading the kiln, the spacing must be moderate and the arrangement must be uniform to ensure the circulation of hot air.
- Use intact and clean kiln tools such as saggers or support plates to ensure stable support.
- Set the appropriate firing curve according to the ceramic category and glazing process.
Yutai automatic kiln supporting control system can set multiple temperature control programs to help users easily complete process settings.
How to use a kiln for ceramics? Firing process analysis
The firing process is usually divided into the following four stages:
- Preheating stage (room temperature to 600°C)
Remove moisture from the ceramic blank to prevent cracking. The temperature rise needs to be slow and stable.
- Firing stage (600°C to above 1200°C)
In this stage, the glaze melts and the ceramic blank vitrifies to form a solid structure. The heating rate and atmospheric conditions need to be strictly controlled.
- Insulation stage
Maintain the target high-temperature zone for some time to ensure that the product is thoroughly sintered and the color is stable.
- Cooling stage
The rate needs to be controlled during the cooling process to avoid cracking or deformation due to thermal stress.
Our four à céramique has full automatic temperature control, an alarm system, and a temperature recording function to ensure the stable quality of each batch of ceramic products.
Common ceramic firing problems and solutions
Common problems and solutions during the firing process are as follows:
Ceramic cracking: Usually due to insufficient drying or too fast heating. It is recommended to extend the drying time and use a gentler heating curve.
Glaze bubbling or roughness: It may be that the glaze coating is too thick or the temperature is insufficient. The glazing method should be optimized and the firing temperature should be fine-tuned.
Color deviation: It is related to the firing atmosphere control. It is necessary to use kiln equipment with a controlled atmosphere and maintain process stability.
Finished product deformation: Caused by improper kiln loading or an unstable support structure. Our customized high-strength kiln can be used to improve the support effect.
Why choose the Yutai automated kiln?
Yutai is committed to creating efficient, energy-saving, and automated firing solutions. Our high-performance ceramic kilns have the following advantages:
- Modular structure, convenient for seamless connection with automatic glazing, decals, packaging and other processes
- Multi-stage temperature control system, precise control of the entire process of heating, insulation and cooling
- High thermal efficiency design, effectively reducing energy consumption
- Intelligent control panel, support parameter setting, historical data recording and fault warning
- Strong compatibility, adapts to a variety of ceramic product specifications, supports fast switching of product types
Our equipment has been widely used in the production of daily-use ceramics and craft ceramics such as ceramic bowls, cups, cans, and plates, continuously improving the yield rate and production line efficiency for customers.
Conclusion
Ceramic firing is not only a process but also a systematic project. Equipment selection and operation procedures are indispensable. Relying on many years of industry experience, Yutai provides ceramic manufacturers with stable, highly automated and energy-saving kilns and overall solutions to help customers create more competitive production lines. Welcome to contact us for more product information and technical support.
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