Working Principle Of Waste Circuit Board Dismantling Machines

The waste circuit board dismantling machine is a core piece of upstream equipment in the recycling supply chain for waste electrical and electronic equipment. Its primary function is to safely and completely separate electronic components (such as chips, capacitors, resistors, and transformers) from the bare circuit boards.

Core Processes and Working Principles

Step 1: Feeding and Preheating

Waste circuit boards come in various shapes and sizes; they are first fed into the dismantling machine's heating drum (or heating chamber).

Step 2: Heating to Soften Solder

Heat is applied to melt and soften the solder connecting the components to the board, without reaching temperatures high enough to damage the electronic components or cause the substrate to smoke or carbonize excessively.

Step 3: Friction and Vibration

As the circuit boards tumble and advance within the heating drum, the machine applies external physical force. During the drum's rotation, the boards collide and rub against one another; components previously held in place by the solder detach due to the resulting friction.

Modern, high-standard dismantling machines must be equipped with a closed-loop flue gas purification system. The interior of the machine maintains negative pressure, ensuring that no generated fumes escape into the environment; instead, all emissions are drawn into the purification ductwork.

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