Electronic products such as PCB, BGA, etc. need to go through a hot air circulation oven before going onlineHigh temperature baking, It can not only shape the PCB board under the high temperature environment, but also dry the moisture quickly to ensure the safety of the later process and the reliability of the finished product. PCBs and humidity-sensitive devices should not be placed too densely when they are baked and dried in an oven, which is not conducive to the volatilization of moisture but also affects the convection of hot air, resulting in poor temperature uniformity. The recommended temperature for PCB baking is between 100°C and 120°C, referring to the number of layers and materials of the PCB board, and the baking time refers to the PCB manufacturing date and unpacking time. The industrial oven mainly uses a blower to blow hot air to increase the temperature inside the oven, and is suitable for high-temperature baking and drying such as PCB and BGA.
Yee HingHot air circulation ovenThe structure adopts a double-layer structure design of an outer box body and an inner box body, and high-density insulation materials are filled in the middle to reduce heat loss and ensure a balanced temperature inside the drying chamber. The shell is made of high-quality cold-rolled steel plate through high-temperature electrostatic spraying, and the coating has the advantages of corrosion resistance and scratch resistance. The inner tank is reinforced with stainless steel material, which is firm and durable. The corners are designed with arcs, which is convenient for cleaning and sanitation, and can easily clean away the remaining residue or liquid. The hot air circulation generally adopts the front-to-back convection method, and the horizontal convection method can also be selected. That is, the stainless steel heating tube is used to increase the temperature, and then the silent fan is used to blow the temperature of the heating tube from back to front to the inner tank of the drying box, and gradually increase the temperature in the working room. The normal design heating rate is 3°C to 4°C per minute. It takes about 30 minutes for the room temperature to rise to 100°C. When the temperature inside the studio is close to the user's set value, the intelligent PID temperature control instrument will automatically reduce the heating output power, effectively preventing the temperature process and ensuring the temperature balance in the box.
