Electric blast drying ovens are widely used across various industries, including manufacturing, agriculture, and pharmaceuticals. These ovens are designed to provide controlled heating environments for drying, curing, and testing materials under specific conditions. However, there are several common issues and considerations related to the standards governing these devices.
First, the application scope of electric blast drying ovens is broad, making them essential in multiple sectors. Their adaptability depends on meeting established performance criteria aligned with environmental test method standards. Before leaving the factory, all products must pass rigorous testing to ensure they meet the required specifications.
Second, the operational standards for these ovens are generally followed during implementation. Manufacturers also adhere to these guidelines to maintain quality and consistency in their products.
However, the current equipment standards were developed in the 1980s, and with the rapid advancement of technology and evolving industry demands, it is crucial to revise these standards to keep up with modern requirements.
When implementing an electric blast drying oven, several environmental factors must be considered. The basic environmental conditions include:
- Temperature: 15°C to 35°C
- Relative Humidity: No more than 85% RH
- Atmospheric Pressure: 86 kPa to 106 kPa
- Thermal Radiation: No direct sunlight or heat source exposure
- Airflow: No strong air currents; avoid direct blowing onto the cabinet
- Electromagnetic Field: No strong electromagnetic interference
- Waste Emissions: No high concentration of dust or corrosive substances
- Cooling Water Source: Water temperature not exceeding 30°C, pressure between 0.1 to 0.3 MPa
- Humidifying Water Source: Resistivity of at least 500 Ω·m
- Power Supply: 220V ± 22V, 380V ± 38V, 50Hz ± 0.5Hz
Regarding load requirements, the following should be considered:
- Load Type: Generally includes electrical, electronic, or other components and insulation materials (excluding salt spray tests)
- Load Conditions:
- Total Load Mass: 50–80 kg/m³
- Total Load Volume: No more than 1/5 of the chamber volume
- Main Duct Blockage: No more than 1/3 of the cross-sectional area of the duct’s location
- Salt Spray Test Equipment: Dimensions 50×100×(1–2) mm, made of metal
- Number of Samples: 160 pieces per square meter of chamber area
By following these guidelines, users can ensure the proper operation and reliability of electric blast drying ovens, while also adhering to updated safety and performance standards.
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