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Denmark's Multi-Wing uses BASF's Ultramid for axial fans

03 Apr '15

2 min read

Denmark’s leading manufacturers and developers of axial impellers, Multi-Wing International A/S, has chosen BASF’s new long glass fibre-reinforced polyamide Ultramid Structure B3WG10 LFX in the production of the hubs of their new mixed flow fan.

The hubs are circular parts fitted on axles or pulleys which then transfer the circular motion to the fans. Fan impellers are used in ventilation, for example in tunnel ventilation systems, engine cooling systems and air-conditioning systems. A new polyamide fibre system provides an improved fibre bonding within the plastics which results in a more stable fibre skeleton structure. The key features of the material are its extremely good weld line strength and creep resistance, particularly at high temperatures, which make it ideal as a substitute for metal, BASF said ina media statement.

Axial fans are subjected to high speeds and undesirable natural oscillations and vibrations. Due to its high weld line strength and creep resistance, Ultramid Structure LFX can withstand these extreme stresses and thus provides protection against damage and excessive deformation of the plastic. Its high notched impact strength also means that the material can absorb impact and shock energy at low temperatures without breaking.

Victor Silbermann, development manager at Multi-Wing said, “In numerous series of tests we have found that the material can withstand extreme centrifugal forces. The stable fibre network makes it ideal for heavy loads and therefore a good alternative to metals in the production of our hubs. Both, working extremely closely with BASF and the consultation throughout the development phase have also enabled the company to continuously optimize processes and moulds.”

Andre Schäfer of application development for engineering for plastics at BASF said, “We have optimized the material’s properties to such an extent that the plastic has proved a good investment in a number of other applications and current client projects.” (GK)

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