1.Core customization requirement analysis
1.1 The standard box size or load-bearing capacity (such as automotive parts, large unmanned aerial vehicles, and entire cabinet servers) cannot meet the requirements. Special sample racks, trays or suspension devices are required. The test samples need to be powered on and run inside the box, and connected to cables or pipes (such as battery pack charge and discharge tests, engine component tests). Oil stains, particulate matter or corrosive gases may be released during the sample testing process.
1.2 It needs to be connected with mechanical arms and AGV carts to achieve automatic loading and unloading. The heating and cooling rates required far exceed the standard specifications (such as >15°C/min).
1.3 The equipment needs to adapt to specific room sizes, door opening sizes or floor heights. There are special requirements for the power supply (if it cannot meet 380V) and the cooling water source (if a cooling tower cannot be provided).
2. Key customized technical specifications
2.1 Customized Dimensions
The internal effective space is determined entirely based on the size and quantity of the customer's samples. The minimum distance between the sample and the box wall needs to be considered to ensure uniform airflow. It is necessary to clearly define the size of the door, the material of the sealing strip, the door lock mechanism (mechanical lock, pneumatic auxiliary lock), and the size and quantity of the observation window. The inner box is usually made of SUS304 stainless steel. The outer box body can be made of high-quality steel plate with plastic spraying or SUS304. For corrosive tests, more durable materials should be specified. Test holes are used for leads. The size, quantity and position of the hole diameters (such as left or right) need to be customized, and sealing plugs or flanges should be provided.
2.2 Confirm the test interval
The technical index standards for temperature are usually from -70°C to +150°C. The standard heating and cooling rate is 1 to 3°C/min. Linear rapid temperature change: 5 to 10°C/min. Nonlinear rapid temperature change: Customizable to 15°C/min or even higher. This is directly related to the power configuration of the refrigeration and heating systems and is a key factor influencing the cost. Customize stricter control accuracy, such as uniformity ≤±1.0°C and fluctuation ≤±0.5°C.
2.3 Refrigeration System
Air cooling: Suitable for sites where the ambient temperature is not high and the ventilation around the equipment is good.
Water cooling: It is suitable for large cooling capacity, high heat generation samples, or situations with high ambient temperatures. It is more efficient but requires a cooling tower.
Cascade refrigeration: It is used for low-temperature requirements below -40°C and usually adopts two-stage cascade.
2.4 Installation Method
The refrigeration system of the integrated machine is located at the top or bottom of the box, with a compact structure and convenient installation. The split-type refrigeration unit is separated from the box body and is suitable for high-power equipment. It can discharge noise and heat to the outside, but the installation is complex.
2.5 Control System and Software
The controller customizes the size and brand of the color touch screen, supports multi-segment programming, program group loops, step jumps, etc. Customized LAN interface for connecting to the upper computer (computer) for data monitoring and recording. Whether it is necessary to support remote network monitoring and operation, as well as customize record intervals and storage capacity.
2.6 Independent sample over-temperature protector.
Compressor overheat, overcurrent and overpressure protection; Fan overcurrent protection Cooling water cut-off protection and automatic stop test function when the door is opened; Leakage or short-circuit protection; Sound and light alarm prompt.
Customizing double-door temperature test equipment is a systematic project. The key to success lies in the clarification and refinement of the initial requirements. A detailed and unambiguous "Technical Requirements Document" serves as the cornerstone for communication between equipment suppliers and customers. It ensures that the final delivered equipment fully complies with testing, process, and site requirements, avoiding subsequent disputes and cost overruns.
The core function of adding nitrogen input in industrial ovens is to create an inert atmosphere environment with low oxygen or no oxygen. This is usually referred to as "nitrogen protection" or "nitrogen-filled baking".
Preventing oxidation is the most common and primary purpose. When heated in the air (with an oxygen content of approximately 21%), many materials will undergo oxidation reactions, thereby affecting product quality. Adding nitrogen input to industrial ovens can prevent the formation of oxide scale (such as rust) on the surface of metal products during heating, keep the metal bright and clean, and improve the quality of subsequent processes such as electroplating and spraying. Or to prevent the oxidation of component pins, pads and precision films at high temperatures, ensuring the quality of soldering and the long-term reliability of the product. At the same time, it can also prevent chemical and powder materials from undergoing chemical reactions with oxygen at high temperatures, thereby altering their chemical properties.
2. Some materials pose a risk of fire or explosion in high-temperature and oxygen-rich environments. Increasing nitrogen input can suppress combustion and explosion.
In industries such as printing and coating, a large amount of flammable organic solvents (such as alcohol, acetone, and toluene) are volatilized during the baking process. Introducing nitrogen to reduce the oxygen concentration below the limit oxygen concentration can completely eliminate the risk of fire and explosion, which is an important safety measure. For metal and plastic powders, when they reach a certain concentration in the air, they are highly prone to explosion when exposed to open flames or high temperatures. Nitrogen protection can create a safe processing environment.
3. Improve process control and product quality. Heating in an oxygen-free or low-oxygen environment can avoid many side reactions caused by oxygen. In processes such as chip manufacturing and solar cell production, extremely high cleanliness and an oxygen-free environment are essential to prevent the oxidation of silicon wafers, metal electrodes, etc., ensuring extremely high product yield and performance.
4. While filling the oven with nitrogen, the air that originally contained moisture and oxygen inside the oven will also be "driven out". This not only prevents oxidation but also plays an auxiliary drying role, making it particularly suitable for products that are extremely sensitive to moisture.
In conclusion, adding nitrogen input to industrial ovens is to actively control the heating environment rather than passively heating in the air. This is an important technical means used in high-end manufacturing and precision processing.
¿Por qué debería evacuar antes de calentar en un Horno de secado al vacío？ 1) Proteger la bomba de vacío:Si calienta el horno antes de evacuar, la bomba de vacío extraerá el aire calentado. Este proceso transfiere el calor a la bomba, lo que puede hacer que se sobrecaliente. El sobrecalentamiento puede reducir la eficiencia de la bomba de vacío e incluso puede dañarla. 2) Prevención de daños al medidor de vacío:Si calienta primero el horno, el aire calentado se dirigiría hacia el medidor de vacío y haría que este instrumento se sobrecaliente. Si la temperatura excede los límites operativos del medidor, puede provocar lecturas inexactas o daños permanentes. 3) Evitar los riesgos de seguridad:El material probado se coloca en la cámara de vacío que puede eliminar los gases extraídos del material. Si el material probado se calienta primero, el gas se expandirá cuando encuentre calor. Debido al excelente sellado de la cámara de vacío, la inmensa presión generada por el gas en expansión podría causar que el vidrio templado de la ventana de observación se rompa. El procedimiento correcto es evacuar el aire primero y luego calentar. Si el nivel de vacío cae después de alcanzar la temperatura deseada, puede reevacuar brevemente. Este método ayuda a extender la vida útil del equipo. Conclusión:Para garantizar la seguridad, mantener la eficiencia del equipo y prolongar la vida útil del horno de secado al vacío, siga siempre el procedimiento correcto: evacuar el aire primero y luego calor. Este simple paso puede prevenir posibles peligros y daños costosos.
Características del producto del horno de vacíoEl horno de vacío puede obtener una mayor velocidad de secado a una temperatura más baja y la utilización del calor es total, lo que es principalmente adecuado para el secado de materiales sensibles al calor y materiales que contienen condensadores y disolventes a recuperar. Se puede tratar antes del secado y no se pueden mezclar residuos en el proceso de secado. El secador es un secador de vacío estático, por lo que no se dañará la formación de materiales secos. Existen muchos métodos de alimentación: vapor, agua caliente, aceite térmico y calefacción eléctrica.Los hornos de vacío están diseñados para secar sustancias sensibles al calor, de fácil descomposición y oxidación, y pueden llenarse con gases inertes, especialmente para algunos artículos complejos.El producto tiene las siguientes características:1, estructura de la cámara: la cámara adopta una estructura integral;2, material de la carcasa: spray electrostático de acero laminado en frío de alta calidad; Material de la pared interior: placa de acero inoxidable;3, material aislante: fibra de vidrio ultrafina;4, el sello de la puerta: tira de goma de silicona de protección del medio ambiente. El cierre y la estanqueidad de la caja se pueden ajustar y el anillo de sellado de la puerta de caucho de silicona está formado como un todo para garantizar un alto vacío dentro de la caja.5, el estudio está hecho de placa de acero inoxidable (o placa de trefilado) para garantizar que el producto sea duradero.6, el almacenamiento, calentamiento, prueba y secado se realizan en un ambiente sin oxígeno o lleno de gases inertes, por lo que no hay oxidación.7, el tiempo de calentamiento más corto, en comparación con el tiempo de calentamiento del horno de secado tradicional reducido en más del 50%. Debido a que el horno de vacío recibe energía térmica mediante electricidad y los artículos húmedos son conductores, es recomendable tener cuidado de no tener fugas durante el uso, por lo que el horno general debe estar conectado a tierra para garantizar la seguridad. Si no hay cable a tierra, es necesario confirmar que no haya fugas de electricidad en el horno; Si no hay fugas, se puede utilizar con cuidado, y si todavía hay fugas, se debe suspender inmediatamente.El horno de vacío está diseñado para secar sustancias sensibles al calor, de fácil descomposición y oxidación, se puede llenar con gas inerte (opcional), especialmente algunos componentes complejos de los artículos también pueden secarse rápidamente, adecuado para empresas industriales y mineras, escuelas de medicina, Unidades de investigación científica en condiciones de vacío para tratamiento térmico de secado.
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