Cause Analysis of Screw Wear
As part of the plastic plus a reinforcing agent, such as glass fiber, mineral or other filler.
, Each plastic, there is an ideal plastic processing temperature range, should control the barrel processing temperature, so close to the temperature range.
In the injection of these plastics, if the high speed into, then increase the shear force on the plastic at the same time, will also make the corresponding to produce more shredded fiber, the shredded fiber contains sharp ends, so wear
Granular plastic from the hopper into the barrel, the first will reach the feeding section, in the feeding section is bound to appear dry friction, when the plastic heat shortage, melting uneven, it is easy to cause the barrel wall and screw surface wear increases.
Similarly, in the compression section and the homogenization section, if the plastic state of the molten state is uneven, will cause wear and tear faster.
