Wind power industry development will drive the leap forward in the fastener industry

In order to implement the "equipment adjustment and revitalization plan for the equipment manufacturing industry", improve the overall level of the equipment manufacturing industry, and promote the optimization and upgrading of the mechanical infrastructure of the mechanical basic parts, the Ministry of Industry and Information Technology announced the "Implementation Plan for the Revitalization of Machinery Basic Parts Industry" in late October. For high-efficiency clean power generation equipment, we will break through key areas and break through a number of key component development bottlenecks. For example, wind turbine towers use large-size high-strength fasteners, which require anti-corrosion performance, over 700 hours, strength class 10.9, 12.9, screws Stable strength, adapt to high and low temperature environment; high reliability nuclear power special fasteners develop new materials, require strength above 8.8, strong reliability, anti-interference. High-strength fasteners for wind power require long-term field service, poor environment, and poor maintenance conditions. Under normal continuous working conditions, wind power fasteners must meet the service life of more than 20 years. Wind power high-strength fasteners have high technical requirements. The materials and manufacturing processes of wind power fasteners have potential and market, and the expectation of technology will be the subject of sustainable development.

Foreign equipment manufacturers pay great attention to the heat treatment of high-strength bolts to ensure the uniformity of their organization, to obtain the best combination of strength and toughness, and to ensure the safety of bolts in service. Domestic manufacturers have not paid much attention to this, and the common problem is the defect of bolt heat treatment, resulting in uneven organization. Although the strength and hardness of the bolt can reach the performance of 10.9 and above, due to poor uniformity of the structure, early failure occurs for a variety of reasons. Therefore, process control should be strengthened in the manufacturing process.

Recently, the National Standardization Administration announced 20 wind power generator sets, of which GB/T25458-2010 "Wind Generator Combination Certification Rules and Procedures" will be implemented on January 1 next year; and GB/T19072-2010 "Wind Power Generation" Unit Tower", GB/T25381-2010 "Wind Generator Set Series Spectrum", GB/T25383-2010 "Wind Generator Set Wind Wheel Blade", GB/T25390-2010 "Wind Power Generator Ductile Iron Parts", GB/T25385 -2010 "Wind Generator Operation and Maintenance Requirements" will also be implemented on March 1 next year. This shows that the processing of wind turbine components is speeding up. With the technological advancement of Chinese steel companies, the introduction of high-strength, high-heat-resistance and high-formed bar wires can meet the requirements of low-carbon economy and increasingly stringent mechanical performance of wind turbine components, and can also support wind turbine generator sets. 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 enterprises should seize this special opportunity and make a difference in the new situation.