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Fakuma 2018: Testing plastics under pressure

Nordhausen (Germany), August 16, 2018

Fakuma 2018: Testing plastics under pressure

Test benches from Poppe + Potthoff Maschinenbau (Hall FO, Stand FO-02) test media-carrying plastic components with +/- 0.1 bar tolerance for pressure resistance

Numerous tests are required to validate new plastic components for practical use. For housings and media-carrying components, for example, the tightness as well as the resistance to flow and pressure changes must be tested until the burst. For this purpose, Poppe + Potthoff Maschinenbau offers test benches with measuring capability using a specially developed fine control method.

"With our test benches for the plastics industry, the pressure is built up using a technology that is faster, more precise and requires less maintenance than conventional systems," says Johannes Montag, Head of Sales at Poppe + Potthoff Maschinenbau. For this purpose, two test circuits with different operating modes were combined:

A specially developed, wear-free fine control method with a tolerance of +/- 0.1 bar enables a very precise, freely programmable and repeatable pressure increase up to 50 bar. In a second test circuit, a pneumatically driven pressure intensifier operates, with which a pressure of up to 400 bar can be generated.

With up to 100,000 measured values per second, the burst pressure of a component with an expansion volume of up to 20 liters is determined precisely. Measurement data acquisition and visualization is performed with LabVIEW from National Instruments, which has a serial interface for data exchange. The test requirements are entered via a touch panel. The test medium is tap water or test oil.