| 摘要 |
A hot runner assembly for an injection molding assembly includes an injection unit adapted to contain a flowable material, a manifold having a first segment of a melt channel formed therein, a nozzle assembly connected to the manifold including a nozzle housing and a nozzle tip, a retainer that retains the nozzle tip against the nozzle housing, and a mold cavity. The nozzle tip is formed of a precipitation hardened, high thermal conductivity material and a precipitation hardened, high strength material, which are integrally joined together to form the body. The thermal conductivity of the high thermal conductivity material is greater than the thermal conductivity of the high strength material, and the strength of the high strength material is greater than the strength of the high thermal conductivity material. The high thermal conductivity material and the high strength material can be precipitation hardened together under the same precipitation hardening conditions.
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