1. Product Introduction
Ceramic fiber heating module is a new type of refractory product with integrated heating and insulation functions. It uses lightweight high-temperature resistant ceramic fiber (density 300-400kg/m³) as the core substrate. Through the vacuum suction filtration molding process, the resistance wire is embedded inside to achieve the integrated design of heating elements and insulation layers.
It is a new type of refractory lining product launched to simplify and speed up kiln construction and improve the integrity of the lining. It is white in color, regular in size, and can be directly installed according to the size customization, which improves the construction efficiency and has good refractory and heat insulation effects. It improves the integrity of the refractory and heat insulation of the kiln, and the temperature is 1050-1300℃.

2. Structural and technical advantages
1. Structural design

• Cylindrical shell structure: The mold barrel is cylindrical as a whole. This shape has unique advantages in many industrial scenarios. For example, it can be easily installed on pipes that need to be heated, cylindrical workpieces, or used as an independent heating chamber. The cylindrical shell is made of high-temperature resistant ceramic fiber material. Ceramic fiber has the characteristics of light weight and low thermal conductivity. It can not only effectively reduce the loss of heat to the surrounding environment and play a good role in heat insulation, but also withstand high working temperatures to ensure the stable operation of the mold barrel in high temperature environments.

• Embedded spiral element layout: The spiral element (usually a resistance wire) is embedded inside the ceramic fiber tube. The small spiral shape greatly increases the length of the resistance wire in a limited space. Compared with the linear layout, it can generate more heat under the same current conditions and improve the heating power. At the same time, the embedded design allows the resistance wire to be fully protected by the ceramic fiber tube, reducing contact with the external environment, reducing the risk of oxidation and corrosion of the resistance wire, and extending its service life. In addition, the spiral distribution of the resistance wire can radiate heat evenly to the surroundings, forming a relatively uniform temperature field in the tube.

2. Performance and advantages

• Light weight: density 300-400kg/m³

• Low thermal conductivity: 1000℃, 0.23W/mk

• Good energy-saving effect: 10%-30% higher than traditional refractory materials

• Efficient and fast heating: The design of the spiral element wire increases the heating area, and combined with the good thermal insulation performance of the ceramic fiber, the mold barrel can quickly heat up in a short time. For some processes that need to quickly reach a specific temperature for pretreatment or production, such as the preheating process of some chemical raw materials, the cylindrical ceramic fiber heating mold barrel with spiral element wire embedded in it can quickly meet the heating requirements and improve production efficiency.

• Good temperature uniformity: Heat is radiated evenly from the embedded spiral element wire to the surroundings, and under the constraint of the ceramic fiber tube, a relatively uniform temperature field is formed inside the tube. For processes that require high temperature uniformity, such as overall heat treatment of cylindrical metal workpieces, it can ensure that all parts of the workpiece are heated uniformly, ensure the stability of product quality, and avoid differences in workpiece performance due to local overheating or overcooling.

• High temperature resistance and strong stability: high-quality ceramic fiber materials enable the mold barrel to withstand high temperatures, generally 1200℃ 1400℃ or even higher. In high temperature environments, ceramic fibers not only provide thermal insulation protection for the resistance wire and reduce the heat loss of the resistance wire, but also effectively resist rapid temperature changes (thermal shock), prevent the resistance wire from being damaged or the mold barrel structure from being deformed due to thermal shock, ensure the stability of the mold barrel under long-term high temperature working conditions, and reduce the maintenance frequency and cost of the equipment.

• Flexible installation and use: The cylindrical shape design makes its installation method more flexible. According to actual production needs, the shell can be made vertically or horizontally for independent heating. At the same time, due to its relatively simple structure, it can be put into use after connecting to the power supply, and the operation is convenient. It is particularly suitable for some scenes with limited space or the need to quickly build a heating system.

• Flexible customization: supports the production of plate-shaped, cylindrical and special-shaped parts, and matches pit-type furnaces, bell-type furnaces, box-type furnaces and other furnace types.

3. Specifications

Vertical furnace: oxidation, annealing, diffusion, photolithography and drying
vertical

Horizontal furnace: PECVD, LPCVD, boron diffusion, phosphorus diffusion, annealing
horizontal

IV. Applicable Scenarios and Industries
1. Typical Applications

• Semiconductor and photovoltaic industries: It can be used to manufacture heating components for heat treatment furnaces. It can quickly heat up and accurately control the temperature, provide a stable high-temperature environment for wafers, and carry out high-temperature heat treatment processes such as oxidation, diffusion, annealing, etc. to ensure the consistency and repeatability of the process. Due to its good thermal insulation performance, it can also reduce heat loss. It is used in diffusion furnaces, sintering furnaces and other equipment to provide a stable high-temperature environment to achieve the diffusion of impurities and the sintering of electrodes.

• Petrochemical industry: In the process of heating and heat preservation of oil pipelines and heating and activation of certain columnar catalysts in chemical reaction towers, the cylindrical ceramic fiber heating mold with spiral element wires plays an important role. It can ensure the stability of the fluid temperature in the pipeline, prevent the solidification of oil products or crystallization of chemical raw materials due to low temperature, and provide a suitable activation temperature for the catalyst, promote the smooth progress of chemical reactions, and improve the output and quality of chemical products.

• Mechanical manufacturing and metal processing: For the heat treatment process of some cylindrical metal parts, such as quenching and tempering of shaft parts, the heating die barrel can provide a uniform heating environment, accurately control the heat treatment process of parts, improve the organizational structure and performance of metal parts, and improve the strength, toughness and wear resistance of parts. In addition, in the hot bending, hot extrusion and other forming processes of metal pipes, it can also be used to heat the pipe locally or as a whole to facilitate processing operations.

• Scientific research and laboratory equipment: In the laboratories of scientific research institutions, when it is necessary to conduct precise temperature control experiments on some cylindrical samples, such as studying the performance changes of new materials at different temperatures, the cylindrical embedded spiral element ceramic fiber heating mold can provide a stable and uniform heating environment to meet the strict requirements of scientific researchers for experimental conditions. At the same time, its flexible installation and use methods are also easy to adapt to different experimental devices.

2. Applicable industries
✔ Mechanical manufacturing ✔ Metallurgy casting ✔ Petrochemical ✔ Ceramic glass ✔ Semiconductor ✔ New energy materials

5. Comparison with traditional solution structure

VI. Precautions
1. Temperature control: The thermocouple needs to be installed close to the heater to avoid overheating.
2. Atmosphere restrictions: It is recommended to reduce the temperature by 10%-15% in a reducing gas (CO, H₂) environment.
3. Carbon deposition protection: Regular cleaning is required in a hydrocarbon atmosphere.