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

The invention discloses an adjustable coaxial laser nozzle for feeding powder, comprising a laser head, a protection lens, a water-cooling sleeve for the protection lens and a column laser cavity arranged at the upper part, a coaxial conical laser cavity which is formed by the inner layer of a laser sleeve in the middle part; wherein, a powder cavity, a secondary external protective cavity and anexternal water-cooling cavity are arranged on the lower part of the external part of the laser sleeve; the powder cavity is formed between the laser sleeve and a power cavity sleeve screwed together;the secondary external protective cavity is formed between the powder cavity and a protective air casing screwed together; the powder cavity and the protective air casing are screwed together and adjustable between 1mm to 3mm; 4 to 6 power transmitting pipes and 4 to 6 air tubes are respectively positioned around the top parts of the cones of the powder cavity and the protective air cavity. The adjustable coaxial laser nozzle for feeding powder has the advantages that the focus length of the focus lamp fit for the coaxial powder-feeding nozzle is between 100mm to 300mm, which ensures convenient assembly and disassembly, even velocity, flexible adjustment of the powder converge diameter, and convenient changeable lower coaxial conical parts (the powder cavity, the air casing and the water cavity).

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.

The invention discloses a processing technology of a mechanical main shaft, belonging to the technical field of shaft processing. The mechanical main shaft organically combines with a refining processwith a purification process through the steps of alloy smelting, refining, purification, molding and the like, which greatly improves the comprehensive performance of the main shaft. The refining process is different from a traditional refining process, the specific refining process can be accompanied by the change of the object state of a refining agent, the bonding degree of the refining agentand the alloy is improved, the refining effect is improved, and a composite purification process combined with the air jet and the purifying agent is adopted, and can spread to a whole alloy system inall-round way and avoid the uneven purification of the alloy.