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What are the damage characteristics of high temperature melt pump after disintegration?

High-temperature melt pump failure, through the disintegration found to have the following damage characteristics:

1, high-temperature melt pump driven gear shaft broken at one end, the other end has obvious cracks;

2, the driven gear broken teeth up to 3 or more, and are from the root of the teeth "uprooted";

3, one of the slave gear shaft sliding bearing serious bite dead, disassembled completely cracked.

4, the slave gear meshing surface serious wear.

5, high-temperature melt pump front cover or rear cover and the slave gear shaft corresponding to the parts of the obvious friction traces.

6, Other unbroken driven gears have obvious cracks at the root.

melt pump extruder

In the design of high-temperature melt pump extruder, improve the rigidity of the driven gear shaft, driven gear root bending fatigue strength and driven gear working surface of the contact fatigue strength; appropriate increase in high-temperature melt gear pump shaft end and the gap between the cover plate, to prevent the shaft end of the friction cover plate produces a large amount of heat to lubricate the role of the melt carbonized and blocked lubrication channel.

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