3results about How to "Improve lapping effect" patented technology

The invention belongs to the technical field of additive manufacturing, and particularly relates to an additive manufacturing method of an ultrahigh-strength steel-stainless steel interlayer heterogeneous structural part. Comprising the following steps that (1) a model is obtained, and an additive model is designed according to performance requirements needed by a structural part; (2) additive preparation is conducted, specifically, the type and specification of a base plate are selected, mechanical grinding and welding wire filling are conducted on the base plate, an additive path is planned according to the model, and a robot walking program is written; and (3) material adding is started, the optimal technological parameters are matched according to the planned material adding path, and material adding of the structural part is started and completed. The ultrahigh-strength steel-stainless steel heterostructure part obtained through the method has the excellent strength-toughness comprehensive mechanical property, the material adding efficiency is high, the interface of the ultrahigh-strength steel-stainless steel heterostructure part is free of the defects of holes, microcracks, unbonding and the like, and the surface quality is excellent.

The utility model relates to a steel connecting end prestressed concrete superposed beam which comprises a steel reinforcement framework, concrete and profile steel arranged at the end of the superposed beam, and the steel reinforcement framework is arranged in the concrete. One side of the profile steel is embedded into the concrete, and the other side extends out of the outer end of the concrete; the profile steel at least comprises a web plate, the web plate is longitudinally embedded in the concrete, a plurality of first toggle pins are arranged on the two sides of the web plate respectively, and the first toggle pins extend towards the two sides and are perpendicular to the web plate; the section steel further comprises an upper flange plate and a lower flange plate, the upper flange plate and the lower flange plate are fixed to the upper end and the lower end of the section steel respectively, and the upper flange plate and the lower flange plate are perpendicular to the web respectively. The lower flange plate is provided with a plurality of second studs, and the second studs extend towards the upper side and are perpendicular to the lower flange plate. The prestressed concrete superposed beam with the steel connecting end is simple, convenient and rapid.

The application relates to the technical field of solar cells, in particular to a main-grid-free solar cell and a photovoltaic module. The main-grid-free solar cell comprises a cell body, a plurality of thin grids and connecting grid lines. The cell body has two oppositely arranged cell surfaces. The plurality of thin grids are arranged on at least one cell surface in a spaced manner, and the direction of the spaced arrangement is a first direction. The extension direction of the thin grids is a second direction, and the second direction intersects the first direction. At least two adjacent thin grids each have a plurality of overlapping segments. Each connecting grid line is connected between two adjacent thin grids. The two ends of at least one connecting grid line are respectively connected to the overlapping segments of the two thin grids, and the connecting grid line and the two overlapping segments connected thereto form an interconnecting overlapping structure. The main-grid-free solar cell is provided with the interconnecting overlapping structure, so that the overlapping effect of the thin grids and the conductive wires is better, the risk of thin grid breakage is reduced, and the light-shielding area is not excessively increased when the breakage is prevented.