33results about How to "Increase the lateral area" patented technology

The invention discloses a method for improving the segregation and shrinkage of the center of a square and round billet; when a cast billet is cooled, the growth rate of solidified shells of the cast billet in an inner arc direction and an outer arc direction is relatively higher while the growth rate of solidified shells of the cast billet in a left side direction and a right side direction is relatively lower through a cooling method according to which the cooling strength in the inner arc direction and the outer arc direction of the cast billet is consistent, the cooling strength in the left side direction and the right side direction is consistent but the cooling strength in the inner and the outer arc directions is higher than that in the left and the right side directions, so that a liquid core on a solidified tail end of the cast billet is a rectangular area which is squashed in the inner and the outer arc directions and elongated in the left and the right side directions. According to the method for improving the segregation and shrinkage of the center of the square and round billet, because segregation solute elements and the distribution methods of solidification and shrinkage are controlled, the center of the cast billet is prevented from being segregated and enriched in a small area, so that the segregation and shrinkage of the center of the square and round billet and other continuous casting billets with similar width and thickness of cross sections are effectively improved, the effect is significant and stable, the use is simple and easy, the cost is low, and the cost performance in implementation is high. Simultaneously, a dynamic slight compression technology in continuous casting and a tail end electromagnetic stirring technology can be implemented.

The invention discloses a multi-rotor-wing auxiliary pollination machine for producing seeds and increasing the yield. The machine comprises a multi-rotor-wing aircraft, and the multi-rotor-wing aircraft is characterized in that two air blowing fans are assembled at the tail of a rack of the multi-rotor-wing aircraft through a connection frame, wherein the air outlet direction of the two air blowing fans is 45-degree downwards relative to the plane of a machine body and 45-degree outwards relative to the direction of the machine tail. When the multi-rotor-wing auxiliary pollination machine for producing the seeds and increasing the yield flies, generated downward spinning air flow can reach force 5-6 wind power, stamens of corn male plants can be shaken forcefully, pollen in the stamens is shaken off and made to fly away, when the multi-rotor-wing machine flies over the corn male plants, air flow generated by the tail of the machine goes up to drive the pollen to spread toward the two sides of the flight direction, and thereby the transverse distance and area of pollen spreading are increased, so that the pollen can adhere to female plants more uniformly, the pollination rate of the female plants is raised, the traditional plantation mode that one corn male plant pollinates three corn female plants can be improved to the extent that one corn male plant pollinates ten to fifteen corn female plants, the pollination rate is raised, pollination quality is improved, and the purposes of increasing the yield and enhancing the effect are achieved.