Wind power parts parts process and how to ensure mechanical properties

- Nov 06, 2018-

Wind power partss are partss used in wind power generation. From the current point of view, there are many specific types and many applications. Therefore, it is necessary to familiarize and understand so that everyone knows what it is and how. To use it properly and reasonably, and to make the best use of it.


1. What defects must be avoided during the parts process of wind power partss?

In the parts process of wind power partss, the defects that must be avoided are the graphite distortion, the reduction of the number of balls, the coarseness of the structure, the floating of graphite, the segregation of chemical components and the shrinkage. In order to avoid these six defects, it is possible to take some effective measures from the aspects of product modeling, product melting and pouring process to achieve the purpose, thereby ensuring the parts quality of wind power partss.


2. How does wind power parts ensure its mechanical properties?

In order to ensure the good mechanical properties of wind power partss, the following aspects are to be achieved: First, to ensure that the partss do not have defects in the parts process, such as coarse structure, graphite floating and segregation, etc. The material has good toughness; the second is to analyze and improve the molding process, smelting and spheroidizing process of the parts according to the actual conditions and process requirements, so as to ensure the use performance and use effect of the parts.


3. Smelting and parts process of wind power partss

Spheroidizing agent: The content of magnesium should be strictly controlled, and this element is easy to oxidize, and it is easy to form an oxide film on the surface of molten iron, which in turn causes problems such as slag inclusion and subcutaneous pores in the parts. Therefore, it is necessary to avoid this. A problem, and in the content of magnesium, is required to be controlled in the range of 0.04% - 0.06%.

Rare earth: It is the indirect spheroidization effect, but if it is a thick parts, the content of rare earth elements should not be too high, because it is easy to produce broken graphite, which in turn affects the material structure and material properties of the parts. In terms of specific content, it is recommended to control below 0.025%.


In addition, in order to ensure the quality of molten iron, it is necessary to use a spectrometer and a thermal analyzer for rapid analysis and post-furnace analysis, which should be taken seriously. In order to improve the purity of the molten metal, it is possible to appropriately increase the temperature of the furnace by 30 ° C - 40 ° C.


4. Spheroidizing inoculation of wind power partss

The spheroidizing inoculation of wind power partss uses more levee punching methods, using two kinds of spheroidizing agents such as cerium-based heavy rare earth spheroidizing agent and light rare earth spheroidizing agent, and then adding a covering agent for spheroidizing. deal with. The reaction time was controlled within 1.5 minutes, and the slag was required to be slag 2 to 3 times after the reaction was completed.