ASTM D4167-21

Podrobné informace

Označení: ASTM D4167-21

Datum vydání: 01.09.2021

Stran: 5

Země: Americká technická norma

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Anotace

This specification covers the minimum requirements for construction of fiber-reinforced thermoset plastic fans (both centrifugal and axial) and blowers, and provides for a common basis for determining safe operating speeds. The fan housing shall be of laminate construction consisting of a resin-rich inner surface layer reinforced with a chemical-resistant glass-fiber or organic-fiber surface mat and an interior layer made of resin reinforced only with noncontinuous glass-fiber strands. Fan wheels shall be manufactured from a corrosion-resistant material as well, with visible defects limited only to the requirements specified. Further rendering the fan wheel and housing electrostatically conductive shall result in a spark-resistant fan. Tests for balance, fan aerodynamic rating, and safe operating speed shall be performed and shall conform to the requirements specified.


Keywords:
axial blowers, centrifugal blowers, fan balancing, fan housing, fan wheel, fiber-reinforced plastic fans (FRP fans), FRP, safe operating speed,, ICS Number Code 23.120 (Ventilators. Fans. Air-conditioners)