High temperature tube furnace temperature for small experiments

　　The temperature range of small experimental high-temperature tube furnaces is usually between 1000 ℃ and 1600 ℃, and some high-end models can reach 1700 ℃ or even higher, depending on equipment design, heating element materials, and experimental requirements. The following is a detailed analysis: 1. Typical temperature range and equipment examples 1000 ℃ -1200 ℃ model Applicable scenarios: sintering of conventional materials, heat treatment, chemical analysis, etc. 1300 ℃ -1400 ℃ model Applicable scenarios: special ceramic firing, metal oxidation research, catalytic reactions, etc. Models at 1600 ℃ and above Applicable scenarios: melting of refractory metals, processing of high melting point materials such as silicon carbide/silicon nitride. 2. Key factors affecting temperature range Heating element material Silicon carbon rod: suitable for environments between 1300 ℃ and 1600 ℃, high temperature resistance and good chemical stability. Tungsten wire: can withstand higher temperatures (such as above 1700 ℃), but has a higher cost and is often used for special experiments. High temperature resistance wire: suitable for scenarios between 1000 ℃ and 1200 ℃, with low cost but relatively short lifespan. Furnace tube material and size High purity alumina corundum tube: can withstand up to 1650 ℃ and is suitable for high-temperature experiments. High purity quartz tube: resistant to temperatures of about 1200 ℃, suitable for medium and low temperature experiments, with good transparency and easy optical monitoring. Furnace tube size: Diameter and length affect heating uniformity, and longer furnace tubes require higher power to maintain temperature uniformity. thermal insulation performance Efficient insulation materials, such as high-purity alumina fibers, can reduce heat loss, lower power demand, and improve the surface safety of the furnace body. Double layered shell design: further reducing energy consumption and extending equipment lifespan through an air insulation layer. 3. Temperature control accuracy and stability Temperature control system PID intelligent temperature control: precise temperature control is achieved through feedback regulation, with an accuracy of ± 1 ℃ or even higher. Multi segment program temperature control: supports more than 30 program settings, can simulate complex temperature curves, and meet different experimental needs. Real time curve display: Monitor temperature change trends for easy adjustment of experimental parameters. temperature uniformity Length of constant temperature zone: The longer the constant temperature zone, the more evenly the sample is heated. Rotating function: Some devices are equipped with rotating furnace tubes, which improve heating uniformity and avoid local overheating or undercooling by changing the relative position of materials and heat field. 4. Selection suggestions Clarify experimental requirements Determine the target temperature range based on the melting point, chemical stability, and desired final performance of the material. For example, silicon carbide sintering requires over 1600 ℃, while metal oxidation research may only require 1200 ℃. Considering the experimental scale (sample size, batch processing requirements), choose the appropriate furnace tube size and power. Pay attention to device configuration Temperature control accuracy: For temperature sensitive experiments (such as catalytic reactions), equipment with a precision of ± 1 ℃ or higher should be selected. Atmosphere control: If a vacuum or specific atmosphere (such as nitrogen or hydrogen) is required, it is necessary to confirm whether the equipment is equipped with a vacuum system and gas flow control device. Safety function: Select equipment with safety measures such as over temperature alarm, overcurrent protection, and gas leak detection to ensure operational safety.