Поскольку ПТФЭ не течет при температуре выше точки плавления, его нельзя лить под давлением, и для этого требуются специальные методы обработки. Формованный ПТФЭ обрабатывается путем прессования порошка сначала в заготовки, а затем спекания заготовок в процессе, аналогичном обработке спеченного металла. Этот процесс создает геометрические формы, которые затем можно обрабатывать, сплавлять и/или сваривать.
Automatic molding, a semi-automated form of compression molding, is the process SuKo uses for the manufacture of medium-volume to large-volume net molded and near net molded PTFE components. The automatic molding process requires dedicated tooling, typically requires minimal operator intervention and plastic parts can be fabricated relatively rapidly.
With the use of precise tooling and processing, parts manufactured using the automatic molding process can be produced to relatively close tolerances, but not to the accuracy of a fully machined part. Components are economically molded by utilizing a process of automated filling of the die cavity, applying pressure, and part ejection.
Details:https://ptfe-machinery.com/ptfe-plastic-molding-machine/
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