The selection of quartz tube furnace involves multiple aspects. Let's take a look at what to pay attention to when choosing a quartz tube furnace!

A commonly used experimental quartz tube furnace (click on the image to view product details)

1. Choose according to the purpose
Quartz tube furnace is mainly used for high-temperature precision annealing, microcrystallization, ceramic glaze preparation, mold annealing, powder metallurgy, plastic powder experiment, sintering of nanomaterials, tempering of metal parts, and heat treatment required for high-temperature processes. When choosing, it is important to clarify the specific purpose of the quartz tube furnace in order to select the appropriate model and configuration that meets the requirements.

2. Select based on temperature
Maximum operating temperature: Consider the maximum temperature that the instrument can maintain (usually less than 1 hour of operating temperature) and the temperature at which the instrument can operate continuously, safely, and stably.
Heating element: The type of heating element determines the maximum operating temperature of the furnace. Common heating elements include resistance wire heating elements (with a maximum heating temperature of about 1200 ℃ and a long-term use temperature of about 1100 ℃), silicon carbon rod heating elements (with a maximum heating temperature of up to 1400 ℃), silicon molybdenum rod heating elements (with a maximum heating temperature of up to 1700 ℃, but the operating temperature is generally 1600 ℃), etc.

3. Select based on size
Furnace diameter: The furnace diameter determines the size of the sample that can be placed inside the furnace. When selecting, it should be determined based on the size and quantity of the sample. If the sample size is large or the quantity is large, a larger furnace diameter should be selected to ensure that the sample can be fully heated and maintain good temperature uniformity.
Furnace tube length: The length of the furnace tube determines the heating area of the furnace. When selecting, the heating time and temperature gradient of the sample should be considered. If a longer heating time or a larger temperature gradient is required, a longer furnace tube length should be chosen.
Tube thickness: Tube thickness determines the high temperature resistance and thermal stability of the furnace. When choosing, consideration should be given to the working environment and temperature requirements of the furnace. If the furnace needs to work for a long time in a high-temperature environment, a thicker furnace tube thickness should be selected.

Vacuum quartz tube furnace (click on the picture to view product details)

4. Select based on function
Atmosphere control: Some quartz tube furnaces are equipped with an atmosphere control system, which can be filled with inert gases such as nitrogen and argon to meet specific experimental or production needs.
Rotating function: The rotating tube furnace can evenly heat the sample during the heating process, achieving better heat treatment results.
Control system: An excellent control system can improve the temperature control accuracy and stability of quartz tube furnaces. It is recommended to choose a control system that adopts microcomputer artificial intelligence regulation technology, which has multi-stage programming function and can program various heating, constant temperature, and cooling programs.

5. Reference brand and price
Brand: Choosing products with good reputation usually means higher quality assurance and more comprehensive after-sales service.
Price: Price is also one of the factors to consider when choosing a quartz tube furnace. Choose products with higher cost-effectiveness within the budget range.

6. Other precautions
Safety: Ensure that the quartz tube furnace has comprehensive safety protection measures, such as protection against overheating, overpressure, overcurrent, disconnection, and power failure.
After sales service: Choose a supplier that provides good after-sales service so that any problems encountered during use can be resolved in a timely manner.

Rotating tilted quartz tube furnace (click on the picture to view product details)

Overall, when choosing a quartz tube furnace, multiple aspects need to be considered, including usage, temperature, size, functionality, brand and price, and safety. By considering these factors comprehensively, one can choose a quartz tube furnace that meets their own needs.Click to learn more tube furnaces! Or click on online customer service to learn more about product information!