Experimental multi zone rotating electric furnace

The experimental multi temperature zone rotating electric furnace is a high-end experimental equipment that integrates independent temperature control of multiple temperature zones and furnace tube rotation function. It is suitable for complex heat treatment experiments of materials under different temperature gradients and atmosphere environments. Let’s take a detailed look at the principle and application of the experimental multi temperature zone rotating electric furnace below!

Customized Big Belly Tube Experimental Rotary Tube Furnace (Click on the picture to view product details)

1. Core functions and design principles
Independent temperature control in multiple temperature zones
The equipment is usually designed as a dual temperature zone, triple temperature zone, or multi temperature zone structure, and each temperature zone can independently set the temperature, heating rate, and insulation time. For example, a three zone rotary furnace can achieve synchronous control of rapid heating, constant temperature insulation, and cooling through zone temperature control, meeting complex process requirements such as staged sintering and annealing.
The temperature control accuracy can reach ± 1 ℃, and fuzzy PID control or self-tuning adjustment technology is used to reduce temperature fluctuations and ensure experimental repeatability.

Furnace tube rotation function
The furnace tube rotates at a constant speed of 1-10rpm to continuously roll the material during the heating process, avoiding local overheating or uneven temperature, especially suitable for uniform sintering of powder and granular materials.
Some furnace types support tilting of the furnace body (adjustable from 0 ° to 20 °), which facilitates sample loading and unloading and reactant discharge, improving operational convenience.

Atmosphere control ability
Equipped with gas inlet and outlet, pressure gauge and vacuum pump interface, capable of introducing inert or reducing gases such as nitrogen, argon, hydrogen, etc., supporting vacuum environment and preventing material oxidation or pollution.
The gas flow control device can accurately control the inflow and flow rate, ensuring a stable atmosphere inside the furnace.

2. Typical application scenarios
Material synthesis and sintering
Suitable for sintering experiments of electronic ceramics, high-temperature structural ceramics, nanomaterials, metal alloys, etc. under complex temperature gradients. For example, sintering of lithium battery materials requires a high temperature of 1200 ℃ or above, and metal ion contamination should be avoided (corundum tube furnace type is recommended).
Multi temperature zone design can simulate the temperature gradient changes of materials in practical applications, study the phase transition process, performance evolution, and process optimization.

Heat treatment and catalytic reaction
Heat treatment such as quenching and annealing of metal parts under vacuum or protective atmosphere to enhance material properties.
Used for catalytic reaction research, exploring reaction pathway optimization conditions by controlling temperature gradient and atmosphere composition.

Preparation of special materials
Hydrogen reduction reaction: Reduce metal oxides in a hydrogen atmosphere to prepare high-purity metal powders.
Water vapor activation: By treating activated carbon and other materials with high-temperature water vapor, the porosity and adsorption performance are improved.

3. Key parameters for selection
Temperature range and heating rate
Determine the maximum temperature (such as 1200 ℃, 1400 ℃, 1700 ℃) and continuous working temperature stability based on the experimental material requirements.
It is recommended to choose an adjustable heating rate of 0-20 ℃/min to meet the heat treatment requirements of different materials.

Furnace tube material and size
Material selection:
Quartz tube: high temperature resistance (≤ 1200 ℃), good chemical stability, suitable for routine experiments.
Corundum tube: wear-resistant and corrosion-resistant, suitable for special chemical treatments (such as sintering of lithium battery materials).
Metal tubes (such as stainless steel): suitable for specific industrial scenarios, but it should be noted that metal ions may contaminate the sample at high temperatures.
Size matching: The diameter of the furnace tube should be larger than the sample size (such as 60mm or 120mm), and the length of the heating zone should cover the sample (such as 600mm heating zone with 1200mm furnace tube) to ensure uniform heating.

Heating elements and insulation materials
Heating element: Resistance wire is suitable for low temperature (≤ 1200 ℃), silicon carbon rod is suitable for medium high temperature (≤ 1400 ℃), and silicon molybdenum rod is suitable for high temperature (≤ 1700 ℃).
Thermal insulation material: It is recommended to use furnaces made of high-purity alumina fibers or alumina polycrystalline fibers vacuum adsorption, which are more energy-efficient and extend their service life.

Safety and sealing design
Sealing performance: Magnetic fluid flange or high vacuum flange sealing is used to prevent gas leakage and external air from entering.
Safety function: equipped with over temperature alarm, leakage protection, power-off when opening the door, emergency stop, etc., to ensure safe operation.

High temperature rotary furnace that can be used to calcine powders (click on the image to view product details)

4. Summary:
Overall, there are many advantages to using a multi temperature zone rotary electric furnace for experiments. Before selecting, it is necessary to communicate the parameters with relevant technical personnel in order to customize a multi temperature zone rotary electric furnace that is more suitable for one’s own experiment!Click to learn more tube furnaces! Or click on online customer service to learn more about product information!