Fan blade defects and damage causes
The author:AdminPopularity:336release
time:2017-08-09
Fan blade hair defects are many reasons, in the production process, will show the pores, stratification and doping and other typical shortcomings. Pore shortcomings mainly because of poor resin and fiber moisture, air overhead is not complete and other elements of the formation; stratification is mainly due to the lack of resin, secondary molding, etc .; doping defects mainly due to the process of foreign body mixed.
In addition, the leaves in the transport and installation process, because the blade itself is a large scale and weight and has a certain degree of flexibility. Therefore, we must do a good job in maintaining the leaves of the operation, to prevent the internal damage. It is worth noting that the fan in the process of running the leaves will show a different degree of damage, the main shortcomings of the type of cracks, cracking and matrix aging, the external shock is the primary cause of cracking, cracking is usually caused by the accumulation of damage Of the fan in the normal operation of the leaves will not attack the sudden cracking, and matrix aging is due to long-term operation of the fan blades in the dust, rain and salt spray corrosion under the conditions of the formation.
In the process of production, installation and operation of the leaves on the non-destructive inspection, on the one hand to promote the failure of the failure characteristics and failure of the form of discussion, on the other hand to prevent the onset of the incident. Therefore, for the shortcomings and damage during the attack period, to develop a set of fan blades for the inspection program, to ensure the safe operation of the fan and improve the life of the blade is of great significance.