61results about How to "Rounded edges" patented technology

A process for fabricating a memory cell, the process includes forming an ONO layer overlying a semiconductor substrate, depositing a resist mask overlying the ONO layer, patterning the resist mask, implanting the semiconductor substrate with an n-type dopant, wherein the resist mask is used as an ion implant mask, and etching the resist mask upon implanting the semiconductor substrate with an n-type dopant. In one preferred embodiment, the etching of the resist mask includes performing a blanket anisotropic etch to reduce the thickness of the resist mask and round the edges of the resist mask. Preferably, the blanket anisotropic etch is performed using an etch including an element selected from the group consisting of nitrogen, hydrogen, chlorine, and helium.

The invention discloses a structure for electromagnetic shielding between panels, which comprises a first panel, a second panel and an electromagnetic shielding piece arranged between the first panel and the second panel, wherein the first panel and the second panel are oppositely arranged; the first panel is provided with a groove, and the electromagnetic shielding piece is accommodated in the groove. In addition, the invention provides a method for forming the electromagnetic shielding structure between the panels, which comprises the following steps: arranging the opposite first panel and second panel; arranging the groove on one side of the first panel opposite to the second panel; and arranging the electromagnetic shielding piece in the groove. The structure and the method for the electromagnetic shielding between the panels reduce the production cost and enhance the panel connection strength of the electromagnetic shielding structure, thus a device utilizing the electromagnetic shielding structure can be more attractive and safer to operators.

The invention belongs to the field of preparation of capacitor-level high-voltage tantalum powder and particularly relates to high-voltage tantalum powder and a preparation method thereof. The tantalum powder provided by the invention is spherical or ball-like tantalum powder, is round in corner angle, uniform in particle size distribution, relatively small in leakage current and high in breakdown voltage, and can be applied under a relatively high voltage.

The invention belongs to the technical field of air bags, and specifically relates to an inflation-free type double-side air bag and a preparation method thereof. The inflation-free type double-side air bag comprises a plurality of upper air bags which are arranged in an array form and are interconnected to form a planar body, a plurality of air bags which are arranged in an array form and are interconnected to form a planar body, and an elastic material layer which is arranged between each upper air bag and the corresponding lower air bag; the upper surfaces of the elastic material layers areconnected to the upper air bags, and the lower surfaces of the elastic material layers are connected to the lower air bags; soft edge connecting parts are arranged between adjacent upper air bags andadjacent lower air bags; in case of being pierced, the air bag still remain the protection effect; in addition, when the inflation-free type double-side air bag is subjected to outside pressure, theelastic material layers are capable of buffering and absorbing energy, thus the deformation degree of the air bag can be reduced, and as a result, the impact force on an air bag body or a product canbe reduced. The preparation method comprises the steps of (1) molding single edge; and (2) sealing an opening, and forming. The preparation method is simple in processes, easy to operate, and high inproduction efficiency.

The printed wiring board includes: a conductive wiring which is formed on a surface of a board and has a plurality of solder lands, to which components to be mounted are electrically connected by solder; and first and second electrically insulating layers formed on the conductive wiring, wherein the first insulating layer is formed on the conductive wiring in such a manner that the first insulating layer covers a portion of a peripheral part of one solder land and a central part of the one solder land is exposed, the portion of the peripheral part being situated on the side of another solder land, wherein the second insulating layer is piled up on the first insulating layer which covers the portion of the peripheral part of the one solder land.

The invention provides a rare earth magnesium alloy. The rare earth magnesium alloy is a modified Mg-Gd-Y-Zr series rare earth magnesium alloy. The as-cast metallographic structure of the rare earth magnesium alloy is provided with an Mg5Gd phase with a round edge; and or the extruded metallographic structure of the rare earth magnesium alloy has a small granular precipitated phase, and the radial size of the granules is 10-150 nm. The microstructure morphology of the alloy is improved through a multi-element microalloying method, the microstructure morphology of the alloy material is improved by adding trace Ag and Sc in a specific proportion, the age hardening and grain refinement effects are improved, and then excellent room-temperature and high-temperature mechanical properties are obtained. On the premise that the total amount of rare earth is not increased, the strength performance index is high, good plasticity is reserved, engineering application is easy to achieve, and the requirements of the current fields of aerospace, missile military industry, rail transit and the like for the mechanical property of a light structural material under the room-temperature and high-temperature environment can be met.

The invention provides a uniform material distributing perforating machine which comprises two force bearing rods. The upper ends of the two force bearing rods is connected to a force bearing plate, and a slide rail and a perforating device are arranged on the force bearing plate; a driving device is also arranged on the force bearing rod; a feeding mechanism is arranged in the bottom of the perforating device which comprises a drill, a pressurizing device and a lifting air cylinder; the drill is connected to the lifting air cylinder, and a pressure pipeline is connected between the pressurizing device and the drill; the pressurizing device is connected to the drill; the feeding mechanism comprises a material paving device and a material pressing device, and the material paving device and the material pressing device are connected to the perforating device; the material paving device comprises a material paving part and a feeding device, the material paving part is arranged in a position corresponding to the bottom of the perforating device, and the feeding device is arranged on one side of the material paving part; the material pressing device comprises a telescopic rod and a pressure block, the telescopic rod is connected to the pressure block, and the tail end of the telescopic rod is connected to the lifting air cylinder. The uniform material distributing perforating machine can prevent a to-be-processed material from moving, holes perforated by the drill are more delicate, and the edges of the holes are smoother.

A silumin alloy melt alterant is characterized by comprising the following components in percentage by weight: 8-12% of Na2SO4, 8-12% of NaCl, 16-24% of K2ZrF6, and 48-72% of Na3PO4. The invention further discloses a silumin alloy melt preparation method. Compared with the prior art, the silumin alloy melt alterant has the advantages that the alterant provided by the invention has a better alteration function, so that an alloy structure is remarkably improved, the result obtained through structure observation and analysis shows that the alloy structure is thin and tiny, the size of primary silicon is 5-25 micrometers, and the primary silicon is round and smooth in edges and has no cuspidal edge or sharp corner.

The invention belongs to the technical field of garbage treatment, and particularly relates to harmless garbage treatment equipment for urban construction, which comprises a rack, and a crushing assembly for crushing bricks and stones and a slow discharging assembly for slowly discharging crushed bricks and stones are mounted at the top of the rack; the same iron removal assembly capable of adsorbing steel and iron scraps is connected between the crushing assembly and the slow discharging assembly, a feeding hopper used for feeding is installed at the top of the crushing assembly, and two symmetrically-distributed buffering protection assemblies for slowing down the falling speed of bricks and stones and preventing crushed bricks and stones from splashing are rotationally installed in the feeding hopper; air curtains for preventing dust from escaping are symmetrically installed on the inner walls of the two sides of the feeding hopper, and air blown out by the air curtains forms an eddy current capable of gathering dust below the buffering protection assembly. The dust-proof and protection device has good dust-proof and protection effects, and metal resources in garbage can be recycled.

The related process method for grain surface in semiconductor die assembly comprises: inserting the target assembly into the cleaning tank, pouring corrosive agent into tank to remove the organic sewage on objective surface in 1-10min; inclining the tank to pour out the agent and fast clean the objective with deionized water; in turn, pouring the first cleaning agent into the tank to remove the metal ion and organic and form oxidation layer in 1-5min, then pouring out the agent and cleaning fast with deionized water; pouring the second cleaning agent in tank to remove heavy metal ion and organic in 1-5min, then pouring out the agent and cleaning fast with deionized water; finally, using ultrasonic wave to clean and dry the objective. This invention is low cost and benefit to improve semidiode performance.

The invention relates the automatic production line producing high-strength colored paint package steel band with non tempering technology, comprising pull-type recoiler, bonding machine, feeding planisher, storage bin, tension speed control S roll units, slitting shears, flat edge trimmer, heating furnace, the first and second cooling trough, coating groove, coating drying furnace, wax or oil groove, drying powder, differential tension speed control S roll units, separate gravity loop units, roll-up units, shipping package units and automatic control system. The roll-up machine comprises adjusting wheel, pressing wheel, nylon wheel, and air-actuated cut, correcting wheel, material received reel and dummy car. The production line makes the whole industrial process on the one production line, and the metallurgical structure of steel band comprises pearlyte and ferrolites. Compared with high-strength package steel band production line at home and abroad, the said production line reduces the cost of manufacture by 40% and equipment investment by 90%.

The invention relates to a PCD (Poly Crystal Diamond) molding cutter for machining a belt pulley. The PCD molding cutter comprises a cutter handle and a PCD cutter bit, wherein a tangent plane is arranged at the top of the cutter handle; a groove is formed in the top of the side wall of the cutter handle; a chamfer edge is arranged between the bottom of the groove and the side wall of the cutter handle; the PCD cutter bit is provided with a front cutter face and a rear cutter face; the front cutter face is arranged obliquely relative to the side wall of the cutter handle; the rear cutter face is arranged obliquely relative to the front cutter face; the PCD cutter bit comprises a plurality of milling teeth, a transition edge and a side edge; a milling groove is formed between the adjacent milling teeth; and the section of the transition edge comprises a horizontal plane and an inclined plane. The PCD molding cutter provided by the invention can be used for machining a plurality of grooves at the same time, is rapid in molding and resists abrasion, so that the machining efficiency and the machining quality are improved.

The invention provides a rare earth magnesium alloy, which is a modified Mg-Gd-Y-Zr rare earth magnesium alloy; the as-cast metallographic structure of the rare earth magnesium alloy has rounded edges Mg 5 Gd phase; or, the metallographic structure of the rare earth magnesium alloy in the extruded state has small particle-like precipitates; the radial size of the small particles is 10-150 nm. The invention improves the microstructure and morphology of the alloy through the method of multi-element microalloying, improves the microstructure and morphology of the alloy material by adding a specific proportion of trace Ag and Sc, and improves the effect of age hardening and grain refinement, thereby obtaining excellent room temperature and temperature. High temperature mechanical properties. On the premise of not increasing the total amount of rare earths, the present invention has high strength and performance indexes, retains good plasticity, is easy to realize engineering application, and can meet the requirements for lightweight structural materials in the current aerospace, missile military, rail transit and other fields. Requirements for mechanical properties at room temperature and high temperature.

The invention provides a cleanable clothing material puncher which comprises a base, a baffle, a column, a control box, a fixing plate, a sliding block, a telescopic rod, a turntable, a motor, a drill bit, a first clamp support, a second clamp support, a first sliding groove, a press plate, a supporting rod, an electric fan, a dust collecting box, a garment material, a foam plate, a second sliding groove and a third sliding groove. A feeding mechanism comprises a material laying device and a material pressing device. The material laying device comprises a material laying part and a feeding device, wherein the material laying part is arranged at the bottom of a punching device. The first clamp support is provided with a supporting rod, the supporting rod is provided with the electric fan, and the second clamp support is provided with the dust collecting box. The cleanable clothing material puncher utilizes the electric fan to blow dust produced on ends or fabrics due to punching into the dust collecting box, a press block is in abutting connection wit a material to be processed when a lifting air cylinder moves down, accordingly the material to be processed is pressed on a punching foam block and is prevented from moving, accordingly holes formed by the drill bit are more exquisite, and the edges of the holes are smoother.