Hot runner mold valve needle sealing is lax, what are the reasons?
The main reason is that the cylinder pressure is not enough. Two the injection quantity over three, low temperature hot nozzle, four valve seal leakage, valve needle valve needle sleeve wear Arno, wear after lead carbide glue leakage valve needle movement is not in place, the size of the mold is not precision.
Two the injection quantity over three, low temperature hot nozzle, four valve seal leakage, valve needle valve needle sleeve wear Arno, wear after lead carbide glue leakage valve needle movement is not in place, the size of the mold is not precision.
General hot runner mold valve needle sealing is lax, the main reason is that the cylinder pressure is not enough.
