Box type high-temperature heat treatment furnace

Box type high-temperature heat treatment furnace: core functions, technical characteristics, and multi field application analysis.

1. Equipment definition and core functions
A box type high-temperature heat treatment furnace is a periodic operation equipment that uses resistance heating, induction heating, or fuel combustion to raise the temperature inside the furnace to a high temperature range (usually above 700 ℃) for heat treatment of materials such as metals, ceramics, and glass. Its core functions include:
Heat treatment process execution: Supports quenching, annealing, tempering, normalizing, solution treatment and other processes. By precisely controlling temperature and time, the microstructure of the material is changed to optimize its hardness, toughness, wear resistance and other properties.
Material modification: Suitable for strengthening metal materials, sintering ceramics, annealing glass, etc., to enhance the comprehensive performance of materials.
Universal for experimentation and production: It can be used for small batch material research in the laboratory, as well as for large-scale heat treatment needs in industrial production.

2. Technical features and advantages
Accurate temperature control
By using PID control algorithm and high-precision temperature sensors (such as thermocouples), the temperature fluctuation range can be controlled within ± 1 ℃, ensuring the repeatability and stability of the heat treatment process.
Some high-end devices support multi-stage program temperature control, which can achieve automated execution of complex process curves such as step heating, insulation, and rapid cooling.
Uniform temperature field inside the furnace
Optimize the air duct design and circulation system (such as forced convection fans) to ensure that the temperature difference between the upper and lower parts of the furnace does not exceed 10 ℃, avoiding deformation or performance differences of the workpiece due to uneven heating.
Reasonable layout of heating elements (such as side wall heating or top heating), combined with insulation materials (such as ceramic fibers, aluminum silicate felt), reduces heat loss and improves energy utilization efficiency.
Diversified heating elements
Resistance wire: suitable for scenarios below 1200 ℃, with fast heating speed and low cost.
Silicon carbon rod: high temperature resistance (up to 1600 ℃), strong oxidation resistance, suitable for high-temperature sintering or melting.
Silicon molybdenum rod: With a maximum working temperature of 1800 ℃, it is suitable for ultra-high temperature heat treatment or special material processing.
Sealing and atmosphere control
Using silicone rubber seals or pneumatic sealing doors to prevent hot gas leakage inside the furnace and maintain a slightly positive pressure state.
Nitrogen, hydrogen, argon and other protective gases can be introduced to prevent metal oxidation (such as 99.9% purity nitrogen protection) and improve product quality.
Safety and energy-saving design
The double-layer furnace structure is filled with high-efficiency insulation materials, and the outer layer temperature does not exceed 60 ℃, reducing energy consumption and ensuring operational safety.
Equipped with functions such as over temperature protection, power-off protection, and fault diagnosis, it can monitor the real-time operation status of the equipment and quickly locate problems (such as damaged heating elements and abnormal temperatures).
Flexible loading method
Support multiple loading methods such as trolley type, lifting type, front door type, etc., to meet the heat treatment needs of workpieces of different sizes.

3. Typical application areas
Metal processing industry
Aerospace: Processing turbine blades and aviation aluminum alloy components to enhance strength and corrosion resistance.
Automotive industry: Optimize the hardness and fatigue resistance of components such as cylinder blocks and gears to extend their service life.
Machining industry: Heat treat high-precision parts such as turbine blades to meet wear resistance requirements.
New material research and development
Sintered ceramics, metal matrix composites, special alloys, etc., achieve customized design of material properties by controlling temperature and atmosphere.
laboratory study
Universities and research institutes are used for experiments such as material analysis, ash content determination, and coal quality analysis, supporting sample processing in fields such as water quality analysis and environmental analysis.
Industrial Production
The cement and building materials industries perform thermal processing on small workpieces; Conduct coal quality analysis (such as moisture, ash, and volatile matter determination) in the power and coal industries.

4. Equipment selection suggestions
Temperature range: Select the type of heating element (such as resistance wire, silicon carbon rod, silicon molybdenum rod) according to the process requirements to ensure that the maximum temperature of the equipment meets the process requirements.
Furnace size: Determine the furnace volume based on the workpiece size and batch size to avoid space waste or loading difficulties.
Temperature control accuracy: For temperature sensitive materials (such as high-precision mechanical parts), equipment with a temperature control accuracy of ± 1 ℃ should be selected.
Atmosphere control: To prevent oxidation, equipment with atmosphere protection function should be selected, and gas flow meters and pressure monitoring systems should be configured.
Brand and after-sales service: Priority should be given to manufacturers with production qualifications and comprehensive after-sales services (such as regular inspections and quick repairs) to reduce long-term usage costs.