Wind energy is one of the key development of clean energy and new energy in China, and it is the direction of the adjustment of China's power structure. The manufacture of wind power tower has higher requirements for the strength and toughness of steel plate.
The steel plate of wind tower is mainly used to make the structure of wind power tower, which requires high strength, low temperature toughness, strong fracture resistance, good welding performance and surface quality.Wind Turbine Tower
In order to meet the special requirements of the steel performance of Wind tower, Tianjin Iron and Steel Group Co., Ltd. (hereinafter referred to as Tin Steel) has carried out the development and development of the Wind tower steel plate. In the chemical composition, the reduction component design of NB Micro-alloying elements was adopted, the mechanical properties of the steel were ensured by controlled rolling and controlled cooling process, and the production cost was reduced. Through the research and practice on the surface of slab oxide the low SI content and the new high-pressure water descaling process were developed, and the national invention patent was applied to solve the problem of "Ma Keng" which was caused by the pressure of the oxidized metal sheet in the industry, which ensured the surface quality of the steel plate for the wind tower.Wind Turbine Tower
The design of the chemical composition of the steel of the steel tower is based on the q345d/e steel of low alloy high strength steels, combined with the mechanical properties and surface quality requirements of the high strength and low temperature toughness of the wind tower Steel, and the design of the reduction component.
Tin Steel Wind tower steel is a reference to the existing q345d/e steel grades of mechanical properties of the chemical composition design, wind tower steel q345d/e mechanical properties requirements, steel low alloy high-strength steel q345d/e mechanical properties.Wind Turbine Tower
Compared with the standard requirements of wind tower steel, the mechanical properties of q345d/e low alloy high strength steels have a larger margin, in which the yield strength has 90-110mpa allowance, the tensile strength has 80-100mpa allowance, and the low temperature impact power allowance is also around 55-97j. Therefore, the wind tower steel q345d/e in the composition design using the reduction, the addition of NB, by optimizing the rolling process, reduce the two-stage rolling temperature and ACC final cooling temperature, to ensure that the mechanical properties of the product requirements are feasible.Wind Turbine Tower