The development of wind power industry will drive the leap forward of the fastener industry

In order to implement the “Restructuring and Invigoration Plan for the Equipment Manufacturing Industry” to upgrade the overall level of the equipment manufacturing industry and promote the optimization and upgrading of the industrial basic parts and components industrial structure, the Ministry of Industry and Information Technology announced the implementation plan for the “Rejuvenation of the Mechanical Basic Component Industry” in late October. Focusing on high-efficiency and clean power generation equipment, we will focus on the development of bottlenecks in key components, such as large-size high-strength fasteners for wind turbine towers, requiring anti-corrosion performance, over 700 hours, and strength grades of 10.9 and 12.9. Stable strength, adapt to high and low temperature environment; High reliability and special fasteners for nuclear power development and development of new materials, require strength above 8.8, strong reliability, and anti-interference. The high-strength fasteners used in wind power are required to have strong stability due to long-term field service, poor environment, and poor maintenance conditions. Under normal continuous working conditions, wind power fasteners must ensure a service life of more than 20 years. Wind power high-strength fasteners have higher technical requirements. The materials and manufacturing processes for wind power fasteners have the potential and the market. The expectation for technology will be the subject of sustainable development.

Foreign equipment manufacturing companies attach great importance to the heat treatment of high-strength bolts to ensure the homogeneity of their organization, to obtain the best combination of strength and toughness, and to ensure the safety of bolts when they are in service. Domestic manufacturers have not paid attention to this issue. The prevalent problem is the defects in the heat treatment of the bolts, resulting in non-uniform tissue. Although the strength and hardness value of the bolt can meet the performance requirements of grade 10.9 and above, due to poor uniformity of the structure, early failure due to various reasons. Therefore, process control should be strengthened in the manufacturing process.

Recently, the Standardization Administration of the People's Republic of China announced 20 standards for wind power generators, among which GB/T25458-2010 "Regulations and Procedures for the Certification of Wind Turbine Generator Syndrome Grids" will be implemented on January 1 next year; there is also GB/T19072-2010 "Wind-power generation. Towers for Units, GB/T25381-2010 Series Spectrum of Wind Power Generators, GB/T25383-2010 Wind Turbine Blades for Wind Power Generators, GB/T25390-2010 Ductile Iron Casting for Wind Power Generators, GB/T25385 The "2010 Wind Turbine Generator Set Operation and Maintenance Requirements" will also be implemented on March 1 next year. This shows that the processing of wind turbine components is increasing. With the technological advancement of Chinese steel companies, the introduction of high-strength, high-heat-resistant, high-formed rods and wire rods will not only meet the requirements of the low-carbon economy and increasingly stringent mechanical performance of wind turbine components, but also support wind power generators. The localization of the whole machine and parts.

It can be seen that in the future, the wind power industry will have a vigorous development momentum. Fastener companies should seize this extraordinary opportunity to make a difference under the new situation.