50results about How to "Good organizational performance" patented technology

The invention discloses Cr54 steel for a high-quality coal mine chain ring and a production method thereof. The Cr54 steel is characterized by comprising the following chemical components in percentage by weight (%): 0.21-0.24% of C, 0.14-0.20% of Si, 1.20-1.30% of Mn, 0.45-0.55% of Cr, 0.95-1.05% of Ni, 0.025-0.035% of Al, 0.52-0.58% of Mo, less than or equal to 0.010% of P, less than or equal to0.008% of S, less than or equal to 0.004% of V, less than or equal to 0.0025% of Ti, less than or equal to 0.0003% of B, less than or equal to 0.0009% of O, less than or equal to 0.0080% of N, less than or equal to 0.00012% of H and the balance Fe. According to the Cr54 steel, carbon equivalent, a cold crack sensitivity coefficient and a hot crack sensitivity coefficient are introduced, so that the excellent welding performance of the Cr54 steel is ensured, and the cold and hot brittleness resistance is improved; and the surface quality of the steel is improved by adopting an innovative process, the rejection rate is reduced, and the effective cost is increased less.

The invention provides a single axis extruding device and method for forming double nozzles simultaneously, and belongs to the field of manufacturing of thick-walled pipelines with nozzles. The device comprises an extruder with a lifting oil cylinder and an extruding machine. The extruding machine comprises an upper ejector rod, a lower ejector rod, an extruding barrel and an extruding barrel jacket. The extruding device is mounted on the extruder. The lifting oil cylinder drives the extruding barrel jacket to move in the vertical direction. The extruding barrel is tightly hooped through the extruding barrel jacket and moves along with the extruding barrel jacket. According to the single axis extruding device, metal in blanks flow through extrusion of the upper ejector rod and the lower ejector rod. When extrusion is started, a cavity is filled with the metal, and the blanks and the extruding barrel move together through friction force; and after bulging is completed, the metal on the upper nozzle flows to the upper nozzle, the metal under the lower nozzle flows to the lower nozzle, and the speed of the metal between the upper nozzle and the lower nozzle is zero relative to that of the blanks. The extruding device can direct form pipeline inner holes and nozzle inner holes, the structure strength at the nozzles is improved, the metal mechanical and structural properties are improved, and the material utilization rate is increased.

The invention discloses a tab and binder clip tab assemblies comprising same. The tab can include a front side; a back side opposite the front side; a side edge; and an aperture dimensioned to receive at least a portion of the binding portion of the binder clip, the aperture extending through the side edge of the tab to form at least one movable member in the tab. At least a portion of the tab can be positioned to extend beyond a top end of the binding portion of the binder clip when the tab and the binder clip are coupled together. The binding portion of the binder clip can include a first leg and a second leg that are biased toward one another and configured to retain at least a portion of the object between the first leg and the second leg.