4results about How to "High stress" patented technology

The application relates to a self-sensing connecting piece with embedded intelligent aggregate and a connecting system, the connecting piece comprising a steel pipe (1), high-strength concrete (2) and piezoelectric intelligent aggregate (3); the high-strength concrete (2) is arranged in the steel pipe (1), and the piezoelectric intelligent aggregate (3) is arranged in the high-strength concrete (2); the connecting system comprises the self-sensing connecting piece with embedded intelligent aggregate, further comprises a first component and a second component, and the self-sensing connecting piece with embedded intelligent aggregate is arranged in the first component and connected with the second component. Compared with the prior art, the application provides the connecting piece with sufficient tensile bearing capacity and shearing bearing capacity, which can self-sense damage, and long-term and accurate monitoring of the performance of the connecting piece can be achieved.

The utility model provides a crystal growth ingot furnace for silicon part belongs to ingot furnace technical field, including furnace body, the inside of furnace body is provided with the ceramic quartz crucible who has the rotation function, the outer surface of ceramic quartz crucible is provided with the fender, the outer surface of ceramic quartz crucible is provided with the heater for heating, the bottom of ceramic quartz crucible is provided with the crucible bottom plate, the bottom of crucible bottom plate is provided with DSS graphite block. The utility model discloses through hot field and ceramic quartz crucible all adopt circular structure, and the material utilization rate is compared with square structure, can promote three above -mentioned, ceramic quartz crucible can rotate, and the convection is better, and the impurity is not easy to concentrate, DSS graphite block and ceramic quartz crucible can decline, and ceramic quartz crucible is far from side heater after the crystal growth, and it is beneficial to the crystal growth of later period, and the upper heat -insulating cage and lower heat -insulating cage can move up and down, and it is more favorable to control temperature gradient, and increase the process window.

A production apparatus and processing method for thin-walled micro-pitch high-efficiency heat exchange tubes are disclosed, relating to the field of high-efficiency heat exchange tube production technology. The production apparatus of this invention includes a frame, a tie rod, a core head, a lead screw module, a servo motor, a claw plate, and a rolling head. One end of the tie rod is mounted on the frame and parallel to the bottom of the frame. The end of the tie rod away from the frame is connected to the core head. A servo motor is mounted on the end of the frame away from the tie rod. The output end of the servo motor is connected to the lead screw module. A claw plate is mounted on the lead screw module. The rolling head is mounted on the frame. The high-efficiency heat exchange tubes produced by the method of this invention are of great significance for energy saving, water saving, saving operating costs, and reducing reinvestment. They also have advantages such as low resistance, small size, and material saving.

The application relates to a silver-coated copper particle, a preparation method thereof and application of the silver-coated copper particle in sintering paste, and belongs to the field of sintering materials. The application solves the problem of high sintering temperature of high-temperature solder in the prior art. The silver-coated copper particle is prepared by a multi-step chemical synthesis method, that is, silver-coated copper particle suspension is prepared first, and then a silver complex solution, a second chelating agent solution and a complexing agent solution are used to realize gradient structure evolution of the silver layer from compact to porous by controlling the release and reduction rate difference of silver ions, the surface of the silver-coated copper particle has a multi-stage pore structure, the contact resistance between particles can be effectively reduced, the sintering starting temperature can be effectively reduced, the poor oxidation performance of copper particles is solved, the silver consumption is reduced, the manufacturing cost is reduced, the ion migration path length and the electromigration life are increased, the silver-coated copper particle prepared by the application greatly meets the requirements of the electronic packaging field for new welding materials, and has remarkable social and economic benefits.