The Know-How To Be Your Best — The HÜBERS Technology
And Its Advantages.
The multi-component metering technology from HÜBERS exemplarily compared with conventional batch mixing.
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Conventional Batch Mixing
Process sequence
With batch mixing under vacuum, the resin and hardener components are measured into the mixing chamber manually and mixed discontinuously. Casting is carried out under manual control and gravity.
Viscosity, reactive mix
The viscosity increases continuously during the mixing process. Relatively large quantities of reactive mix are prepared.
Accuracy of mixing
Depends on the operator.
During production stops
The reactive material that has been mixed must be used or is wasted. Cleaning has to be carried out with environmentally unfriendly solvents. |
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HÜBERS Technology
Process sequence
Metering pumps press the premixed non-reactive components into the HÜBERS static mixer with precise synchronicity. Here the components are brought together for the first time and are continuously mixed to give the reactive mix. Only that quantity of reactive mix that is required is produced.
Viscosity, reactive mix
The viscosity remains constant during the casting phase. The static mixer contains only the smallest possible quantities of the fresh, reactive mix.
Accuracy of mixing
Does not depend on the operator.
During production stops
The casting process can be interrupted smoothly due to chilling of the static mixer. The reactive mix remains usable after resumption of the process. Solvent-free cleaning is carried out using the resin component, thus only small quantities of material are lost.
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A Choice Of Further Highlights Of HÜBERS’ Technology.
HÜBERS Metering Pumps
Piston-type metering pumps with constant delivery pressure, driven from above via the stirrer axis. 6-fold vacuum sealing that does not come into contact with the casting resin. Quickly changed insert modules to permit different quantities of casting resin. Optional: fully ceramic version.
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Metering from an evacuated container |
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All materials can be metered precisely, regardless of the proportion of filler they contain |
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Maintenance-free and wear-resistant; no loss of pressure even with relatively long pipe systems as may be given with multiple casting valves |
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The pumps function independently of gravity |
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Long service life even with highly abrasive materials
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HÜBERS Metering Pump Drive
The metering pumps can be driven alternatively by either central drive with adjustable lever arm system or via electronically controlled servomotor drives.
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The two metering pumps run synchronously guaranteeing exact mix ratio |
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Central drive: simple and cost-effective |
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Electronically controlled servomotor drives: more flexibility in selection of the casting parameters
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HÜBERS Vacuum Metering Mixer
Mixer vessel with large diameter and low height. Special shape of the stirrer, optimally matched to the vessel geometry; < 1 mm bottom clearance; slow-running. Regulation of vessel temperature via double jacket.
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Large surface to give optimum preparation of the material |
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Thorough, gentle mixing to give high level of homogenization |
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Optimum degassing even without high performance equipment |
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Uniformly degassed and prepared casting resin masses regardless of their viscosity
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HÜBERS’ Continuous Material Preparation And Degassing System
Capable of three-shift working without premixer groups. It can also be retrofitted to increase the capacity of existing systems in a cost-favourable manner whereby the proven conventional material preparation equipment is retained.
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Good preparation and homogenization of the components |
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Minimum dwell time of the materials in the material preparation containers |
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Minimization of the work necessary when changing the delivery container
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HÜBERS Static Mixer
No moving parts, vacuumtight, low volume, no dead space, easy to assemble. Optionally able to be chilled and/or heated.
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Able to be used with a very wide range of mix ratios and viscosities |
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Can be flushed out with the resin component |
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Easy to maintain, long service life
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HÜBERS Casting Systems
Single casting valve or patented multiple nozzle metering system. HÜBERS static mixer and casting resin valves can be moved in a vacuum-tight manner along the Y-axis over the pallet. The latter can be moved along the X-axis. Optional: triple-chamber automatic casting unit with one loading chamber, one casting chamber and one unloading chamber to shorten process cycle times and thus increase capacity. Patented metering-monitoring system for process control.
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Material passes directly from the HÜBERS static mixer and casting valve into the mould |
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Void-free and dripless casting. No contamination of the parts or casting chamber from dripping |
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Minimum quantity of reactive mix, uniform temperatures, higher quality and precision of casting - even with multiple nozzle systems and very small casting quantities |
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Quality-assuring automatic process control giving high production capacity |
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Each unit can be used both under vacuum and at atmospheric pressure
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