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Jiangsu qianfeng Fasteners CO.,LTD ADD:66,xinning road,jiang an economic developmentarea,rugao nantong,jiangsu,china Tel :0513-87956999 8795768 Fax:0513- 87957089 Mobile:13901429661（qiangkun,he） E-mail：postmaster@jsqianfeng.com maomao@jsqianfeng.com Http://www.jsqianfeng.com
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The development of wind power fasteners are facing challenges |
| Update:
2011-2-14 |
| Fasteners due to long-term field service, poor environment, poor maintenance conditions, so the requirements of wind turbine stability. Under normal working conditions, the wind power fasteners must be guaranteed for more than 15 years of service life. Under certain conditions, the quality of raw materials will affect the choice of production process parameters, and directly affect the mechanical properties and safety of high strength fastener used in wind power. During the installation of the wind farm, the development and application of the high strength fastener is also a challenge from the supplier and the manufacturing process. Faced with new challenges, the technology and materials of the wind power fasteners, potentially huge market and the technical expectations will be the subject of sustainable development. Foreign equipment manufacturing enterprises attach great importance to the heat treatment of high strength bolts, to ensure the uniformity of the organization, in order to obtain the best strength and toughness, and ensure the safety of the bolt. Domestic manufacturers have not yet been paid attention to, the general problem is the heat treatment of bolts defects, resulting in uneven tissue. Although the strength and hardness of the bolt can reach 10.9 or more performance requirements, but due to poor uniformity of the organization, a variety of reasons for early failure. Therefore, process control should be strengthened in the manufacturing process. As a series of pin mixer, wind power fastener materials re distribution, extrusion screw machine interrupt causes the material to have a return, the process of material under continuous shear, orientation, cutting, folding, stretching. A part of the melt to recombine, part of the melt further segmentation in the groove of each L / D, to melt after four times of segmentation, therefore, why can the effective mixing of very short slenderness ratio and achieve the reciprocating melt extruder. And the inner surface of the machine barrel is swept through the thread, there is no dead end of the logistics, has a good self cleaning capacity, high transmission efficiency and stable and uniform material retention time and so on. |
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