Technical Blog

A systematic look at the mechanisms behind slurry settling and coating cracking in investment casting, and how hydrophilic fumed silica solves these problems in alcohol-based slurry systems.

The discharge outlet of a scraper condenser is the weakest link in the PTT polymerization vacuum system — conventional ball and butterfly valves invariably fail here. How does the Seco Anlagentechnik spherical-cap gate valve let solid oligomers pass through without jamming?

Fumed silica, carbon black and other high-polarity ultra-fine powders inevitably bridge and dust when discharged from FIBCs under gravity. The fully enclosed fluidised vacuum suction lance — airtight coupling, multi-angle micro-orifice fluidisation, synchronised vacuum extraction — solves this problem definitively.

If surface water on wet chips is not removed efficiently before the drying tower, PA6 drying energy soars and chips may cake or degrade. Germany's APRO drum centrifuge — TORQUE direct drive, modular feeding, gas-tight anti-oxidation — is an efficient answer for nylon-6 chip dewatering.

Additives are under 5% of a coating formula yet decisively shape manufacturability, storage stability, application rheology and final film performance.

How does DSD HILGERS achieve the balance between stable load-bearing and free sliding under extreme load, heat and displacement?

Bonded PTFE bearings inevitably fail under extreme temperature swings and high compressive stress; the embedded-slot design raises load capacity 6–12×.