Customizing a pipe diameter tube furnace requires comprehensive consideration of multiple factors, such as large pipe diameter, variable diameter tube (belly tube), ultra-thin tube, branch tube, etc. Before choosing, in addition to paying attention to the pipe diameter, the following aspects should also be noted!

Customized large-diameter rotary tube furnace with variable diameter tube (click on the image to view product details)

1. Clarify core requirements
Experimental objective matching: Determine the diameter size of the tube furnace based on specific experimental or production objectives such as material sintering and atmosphere protection chemical reactions. For example, when processing large-sized samples, it is necessary to choose a large-diameter tube furnace to ensure smooth placement and uniform heating of the samples; For example, if it is necessary to keep the material in the road pipe and rotate it for a long time for heating, a variable diameter pipe may be required.
Temperature range definition: Determine the required temperature range based on the characteristics of the experimental material. The temperature range of ordinary experimental vertical tube furnaces is usually 1000 ℃ to 1600 ℃. When high-temperature sintering or material melting is involved, it is necessary to ensure that the maximum temperature of the selected tube furnace is higher than the experimental temperature.
Atmosphere control requirements: If the experiment needs to be conducted in a specific atmosphere (such as inert gas, reducing gas, or oxidizing atmosphere), a tubular furnace equipped with corresponding atmosphere control devices should be selected to ensure that the furnace has gas inlet and outlet and good airtightness.

2. Selection of key components
Heating element selection: Heating elements are the core components of tube furnaces, and their quality directly affects heating efficiency and stability. Among common heating elements, resistance wires are suitable for experiments with medium temperatures (around 1000 ℃) and high purity requirements; Silicon carbon rods have good high-temperature resistance and can be used in environments with high temperatures (1600 ℃) and certain corrosiveness; Silicon molybdenum rods are usually used for more specialized experiments, with strong corrosion resistance, and are commonly used in situations with special pressure requirements.
Temperature control system configuration: The accuracy of the temperature control system determines the repeatability of the experiment. PID controller is a common high-precision temperature control system. If experiments require different stages of heating, constant temperature, and cooling, a temperature control system equipped with multi-stage program control should be selected. At the same time, the type of thermocouple also needs to be selected according to the temperature range, with common types including N-type, S-type, and B-type thermocouples.
Furnace material consideration: The furnace material directly affects the high temperature resistance and insulation effect of the furnace. Good furnace materials (such as alumina polycrystalline fibers) usually have good insulation performance and corrosion resistance.

3. Safety and operational assurance
Safety protection function: Ensure that the selected furnace has complete safety protection functions, such as over temperature alarm, leakage protection, emergency shutdown, etc. These functions can take timely measures to protect personnel and equipment safety in case of abnormal situations on the device. At the same time, it is necessary to check the electrical insulation performance and shell grounding of the tube furnace to prevent electrical accidents from occurring.
Convenient operation design: Choosing a furnace that is easy to operate and maintain can improve work efficiency and reduce usage costs. Some tube furnaces may have functions such as touch screen control and intelligent programming, which can improve the convenience and automation of operation.

4. Supplier selection and budget planning
Supplier qualification review: Select manufacturers with relevant qualifications and certifications (such as ISO quality management system certification), and give priority to manufacturers with rich industry experience and good reputation to ensure product quality and service reliability. By understanding the manufacturer's past successful cases, especially those that are similar to their own needs, the strength and service level of the manufacturer can be evaluated.
Budget and cost-effectiveness evaluation: The price of tube furnaces is influenced by multiple factors such as temperature limits, atmosphere control, and heating elements. Within the budget range, it is necessary to comprehensively consider factors such as consumables costs, energy consumption, and after-sales service in long-term use, and choose products with high cost-effectiveness.

Customized large diameter quartz tube furnace (click on the picture to view product details)

5. Summary
Customized pipe diameter tube furnaces are generally matched with the products they experiment or produce. It is recommended to communicate with relevant technical personnel before choosing the desired furnace tube, so as to select the tube furnace that suits your needs!Click to learn more tube furnaces! Or click on online customer service to learn more about product information!