34results about "Cathode heaters manufacture" patented technology

In accordance with certain embodiments, the present technique includes a system for sealing a lamp including a thermal shield and a thermally susceptible enclosure disposed adjacent the thermal shield. The thermal shield has a first receptacle adapted to receive a first portion of the lamp. The thermally susceptible enclosure comprises a wall about a second receptacle adapted to receive a second portion of the lamp. The wall has a varying thickness in a desired sealing region between the first and second portions of the lamp.

A method for making a thermionic electron source includes the following steps: (a) supplying a substrate; (b) forming a first electrode and a second electrode thereon; and (c) spanning a carbon nanotube film structure on a surface of the first electrode and the second electrode with a space defined between the thermionic emitter and the substrate.

A tungsten wire containing 1 to 10% by mass of rhenium has a point which indicates a 2% elongation within a quadrangle formed by joining points with straight lines, where the values of x and y are point (20, 75), point (20, 87), point (90, 75), and point (90, 58), in this order, wherein the wire diameter of the aforementioned tungsten wire is represented by x mum, and the elongation of the tungsten wire is 2% after electrically heating with an electrical current which is a ratio of y % to the fusion current (FC) at the wire diameter x mum, and wherein a semi-logarithmic system of coordinates is expressed by a horizontal axis using a logarithmic scale of the aforementioned wire diameter x and a vertical axis using a normal scale of ratio y to the fusion current. According to the above-described configuration, a tungsten wire having a great elongation even under conditions of high temperature can be provided, and the tungsten wire can exhibit an excellent durability when used as component material for constituting cathode heaters and so forth, and the tungsten wire can be manufactured efficiently.

The invention discloses a coil winder which comprises a handle and a tubular rotating handle, wherein one end of the tubular rotating handle is arranged on the handle, a lead handle for fixing the end of a coil is also arranged on the rotating handle; the rotating handle of the coil winder is inserted on a coil column to be wound by the coil, the end of the coil is fixed on the lead handle, at last, the handle is rotated to drive the rotation of the rotating handle and the lead handle so as to enable the coil to be wound on the coil column. The coil wound by the coil winder is neat, safe and reliable; meanwhile, by using the coil winder, the operation is convenient, and the working efficiency can be improved.

The invention relates to a method for manufacturing a lamp filament of a self-rectifying mercury lamp. The method includes the steps of winding, first sizing, cutting, second sizing and melting a core filament. The lamp filament of the self-rectifying mercury lamp is eventually manufactured and obtained through the steps. Compared with the prior art, filament feet at the two ends of the lamp filament manufactured by adopting the method are firmer, so that the filament is not prone to being broken, and the service life of the lamp filament is greatly prolonged.

An optical fiber code holding structure, includes: an optical adapter and an optical fiber code holding member. An optical connector of an optical fiber is connected to an optical adapter. The optical connector is attached to an end of an optical fiber code of the optical fiber. The optical fiber code holding member has a light shielding device shielding lights emitted from the optical adapter and a holding device holding the optical fiber code.

The feature that the filament completes decomposition of constant current k in vacuum furnace is: for 0.8-1.0 v/cm filament, the range of added constant current I is between 38.28-43.72 mA; the temperature of tungsten filament Tw is 981-1099deg.C; The temperature of carbonate Tk is 905-1015.

The invention discloses a left-right-right three-stage helical winding method and a left-right-right three-stage helical winding structure for an energy saving filament. The structure comprises a helical filament body (1), wherein, the filament body (1) consists of a mandrel (2) and a filament secondary winding body (3) which is wound on the periphery of the mandrel (2); the filament secondary winding body (3) consists of a molybdenum core wire (4) and a filament primary winding body (5) which is wound on the periphery of the molybdenum core wire (4); the filament primary winding body (5) consists of a molybdenum core wire (6) and a tungsten filament (7) which is wound on the periphery of the molybdenum core wire (6); the tungsten filament (7) is wound on the molybdenum core wire (6) by means of left screw; the filament primary winding body (5) is wound on the molybdenum core wire (4) by means of right screw; the filament secondary winding body (3) is wound on the mandrel (2) by means of right screw. The filament adopts the left-right-right three-stage helical winding method and is characterized in difficult distortion, deformation, formation of a ring and so on after filament stretching, thereby the product qualification ratio of lighting tubes is improved; a large number of labors used for repair are reduced; the production cost is greatly reduced.

The invention discloses a right-right-left three-stage helical winding method and a right-right-left three-stage helical winding structure for an energy saving filament. The structure comprises a helical filament body (1), wherein, the filament body (1) consists of a mandrel (2) and a filament secondary winding body (3) which is wound on the periphery of the mandrel (2); the filament secondary winding body (3) consists of a molybdenum core wire (4) and a filament primary winding body (5) which is wound on the periphery of the molybdenum core wire (4); the filament primary winding body (5) consists of a molybdenum core wire (6) and a tungsten filament (7) which is wound on the periphery of the molybdenum core wire (6); the tungsten filament (7) is wound on the molybdenum core wire (6) by means of right screw; the filament primary winding body (5) is wound on the molybdenum core wire (4) by means of right screw; the filament secondary winding body (3) is wound on the mandrel (2) by means of left screw. The filament adopts the right-right-left three-stage helical winding method and is characterized in difficult distortion, deformation, formation of a ring and so on after filament stretching, thereby the product qualification ratio of lighting tubes is improved; a large number of labors used for repair are reduced; the production cost is greatly reduced.

The invention relates to the technical field of stack type welding mold design and welding, and discloses a high-efficiency and high-consistency cathode assembly welding method for a Ku-band communication traveling wave tube. The high-efficiency and high-consistency cathode assembly welding method comprises the following steps of S1, mold assembly; S2, solder coating; S3, assembling a cathode and a mold; S4, assembling the cathode and the mold; and S5, welding quality inspection. According to the high-efficiency and high-consistency cathode assembly welding method for the Ku-band communication traveling wave tube, a stack type self-adjusting welding mold is adopted, a cathode cylinder is fixed to the mold, and the parallelism and concentricity of an assembly formed by combining an emitter and the cathode cylinder are strictly controlled before welding, and it is guaranteed that after the welding, the emitter vertically moves downwards, the emitter moves downwards in parallel, the cathode which is firmly welded is obtained, and the welding quality of a heater assembly is improved.

The present invention discloses a three-segment (left, left, right) helical coiling method and a structure of power saving filament, which comprises: a helical filament main body (1) composed of a core rod (2) and secondary wound filament body (3) around the core rod (2); the secondary wound filament body (3) comprises a molybdenum wire (4) and a primary wound filament body (5) around the molybdenum wire (4); the primary wound filament body (5) comprises a molybdenum wire (6) and a tungsten filament (7) wound around the molybdenum wire (6); the tungsten filament (7) is wound around the molybdenum wire (6) in left-handed direction; the primary wound filament body (5) is wound around the molybdenum wire (4) in left-handed direction; the secondary wound filament body (3) is wound on the core rod (2) in right-handed direction. The filament in the present invention is wound with a three-segment helical winding wound (left-handed, left-handed, right-handed); therefore, the filament will have little deformation, distortion, or misalignment, etc.; the percent of pass of the lamp product can be increased, rework can be reduced greatly, and therefore the production cost can be reduced significantly.

The invention discloses a right-right-right three-stage helical winding method and a right-right-right three-stage helical winding structure for an energy saving filament. The structure comprises a helical filament body (1), wherein, the filament body (1) consists of a mandrel (2) and a filament secondary winding body (3) which is wound on the periphery of the mandrel (2); the filament secondary winding body (3) consists of a molybdenum core wire (4) and a filament primary winding body (5) which is wound on the periphery of the molybdenum core wire (4); the filament primary winding body (5) consists of a molybdenum core wire (6) and a tungsten filament (7) which is wound on the periphery of the molybdenum core wire (6); the tungsten filament (7) is wound on the molybdenum core wire (6) by means of right screw; the filament primary winding body (5) is wound on the molybdenum core wire (4) by means of right screw; the filament secondary winding body (3) is wound on the mandrel (2) by means of right screw. The filament adopts the right-right-right three-stage helical winding method and is characterized in difficult distortion, deformation, formation of a ring and so on after filament stretching, thereby the product qualification ratio of lighting tubes is improved; a large number of labors used for repair are reduced; the production cost is greatly reduced.