提出了采用激光表面合金化的方法对注塑机和挤出机螺杆表面进行强化，以提高其抗高温粘着磨损性能，延长注塑机使用寿命。
It is put out that the injector and extruder are strengthened on the surface by laser surface alloy to improve its high temperature abrasion and lengthen life of the injector.
注塑机过胶圈在使用中因磨损失去密封性而失效。
Sealing washer in a injection molding machine losed its function because of wear.
针对头部无螺纹和有螺纹的注塑螺杆，使用POLYFLOW软件数值模拟了注塑机螺杆计量段熔料在注射过程中的三维等温流场。
Three-dimensional isothermal material flows in the metering section of injection molder with different screw heads during injection molding are simulated through POLYFLOW software.
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