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What wearing parts do extrusion welding EX2 and EX3 have?

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What wearing parts do extrusion welding EX2 and EX3 have?

There are two common types of wearing parts: heating element and carbon brushes. The main engine motor has a par of carbon brush, the hot air gun has another par of carbon brush.

The service life of the heating element, under ideal conditions, is about 2000 hours. Under severe conditions, such as dust, the service life will be shorter.

The life of the carbon brush of the main engine motor is about 300-400 hours, and the life of the carbon brush of the heat gun is about 600 hours.