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Shot Tower
A shot tower is a tower designed for the production of small-diameter shot balls by free fall of molten lead, which is then caught in a water basin. The shot is primarily used for projectiles in shotguns, and for ballast, radiation shielding, and other applications for which small lead balls are useful. Shot making Process In a shot tower, lead is heated until molten, then dropped through a copper sieve high in the tower. The liquid lead forms tiny spherical balls by surface tension, and solidifies as it falls. The partially cooled balls are caught at the floor of the tower in a water-filled basin.. The now fully cooled balls are checked for roundness and sorted by size; those that are "out of round" are remelted. A slightly inclined table is used for checking roundness. To make larger shot sizes, a copper sieve with larger holes is used. The maximum size is limited by the height of the tower, because larger shot sizes must fall farther to solidify. A shot tower with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torre Perdigones
''Torre'' (plurals ''torri'' and ''torres'') means ''tower'' in seven Romance languages (Portuguese, Spanish, Galician, Catalan, Italian, Occitan and Corsican) and may refer to: Biology * Muir-Torre syndrome, the inherited cancer syndrome * '' Sypharochiton torri'', a mollusc Chess * Carlos Torre Repetto, Mexican chess grandmaster ** Torre Attack, an opening in chess * Eugenio Torre (born 1951), Filipino chess grandmaster * An alternative name for a rook in chess Places Brazil * Torre, a neighborhood in the metropolitan area of Recife England * Torre, Torquay, an area of Torquay in Devon * Torre, Somerset, a hamlet in the county of Somerset France * Torre, Corsica Italy * Torre Annunziata, a comune in the province of Naples in the region of Campania * Torre Archirafi, a frazione in the comune of Riposto in the province of Catania in the region of Sicily * Torre Boldone, a comune in the province of Bergamo in the region of Lombardy * Torre Bormida, a com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lubrication
Lubrication is the process or technique of using a lubricant to reduce friction and wear and tear in a contact between two surfaces. The study of lubrication is a discipline in the field of tribology. Lubrication mechanisms such as fluid-lubricated systems are designed so that the applied load is partially or completely carried by hydrodynamic or hydrostatic pressure, which reduces solid body interactions (and consequently friction and wear). Depending on the degree of surface separation, different lubrication regimes can be distinguished. Adequate lubrication allows smooth, continuous operation of machine elements, reduces the rate of wear, and prevents excessive stresses or seizures at bearings. When lubrication breaks down, components can rub destructively against each other, causing heat, local welding, destructive damage and failure. Lubrication mechanisms Fluid-lubricated systems As the load increases on the contacting surfaces, distinct situations can be observed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shot Towers
Shot may refer to: Arts, entertainment, and media * ''Shot'' (album), by The Jesus Lizard *''Shot, Illusion, New God'', an EP by Gruntruck *'' Shot Rev 2.0'', a video album by The Sisters of Mercy * "Shot" (song), by The Rasmus * ''Shot'' (2017 film), an American film starring Noah Wyle *Shot (filmmaking), a part of a film between two cuts Organizations * Serious Hazards of Transfusion, or SHOT, an organisation monitoring blood transfusion errors in the UK * Society for the History of Technology, or SHOT, a professional organization for historians of technology Sports * Shot (ice hockey), an attempt to score a goal or points *Home run, or shot in baseball slang *Shot put, an event in track and field athletics *SHOT Show (Shooting, Hunting, and Outdoor Trade Show), an annual trade show for the shooting, hunting, and firearms industry * Cricket shots, ways of hitting the ball to score in cricket Weaponry and ballistics *Shot (pellet), small balls of metal generally used as shotgu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spray Drying
Spray drying is a method of changing a dry powder from a liquid or slurry by rapidly drying with a hot gas. This is the preferred method of drying of many thermally-sensitive materials such as foods and pharmaceuticals, or materials which may require extremely consistent, fine particle size. Air is the heated drying medium; however, if the liquid is a flammable solvent such as ethanol or the product is oxygen-sensitive then nitrogen is used. All spray dryers use some type of atomizer or spray nozzle to disperse the liquid or slurry into a controlled drop size spray. The most common of these are rotary disk and single-fluid high pressure swirl nozzles. Atomizer wheels are known to provide broader particle size distribution, but both methods allow for consistent distribution of particle size. Alternatively, for some applications two-fluid or ultrasonic nozzles are used. Depending on the process requirements, drop sizes from 10 to 500 μm can be achieved with the appropriate c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prill
A prill is a small aggregate or globule of a material, most often a dry sphere, formed from a melted liquid through spray crystallization. Prilled is a term used in mining and manufacturing to refer to a product that has been pelletized. ANFO explosive typically comprises Ammonium Nitrate prills mixed with aluminium powder. The pellets are a neater, simpler form for handling, with reduced dust. The material to be prilled must be in a solid state at room temperature and a low-viscosity liquid when melted. Prills are formed by allowing drops of the melted prill substance to congeal or freeze in mid-air after being dripped from the top of a tall prilling tower. Certain agrochemicals such as urea are often supplied in prilled form. Fertilizers (ammonium nitrate, urea, NPK fertilizer) and some detergent powders are commonly manufactured as prills.Vasant Gowariker, V. N. Krishnamurthy, Sudha Gowariker, Manik Dhanorkar, Kalyani Paranjape (2009). ''The Fertilizer Encyclopedia''. Joh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drop Tube
In physics and materials science, a drop tower or drop tube is a structure used to produce a controlled period of weightlessness for an object under study. Air bags, polystyrene pellets, and magnetic or mechanical brakes are sometimes used to arrest the fall of the experimental payload. In other cases, high-speed impact with a substrate at the bottom of the tower is an intentional part of the experimental protocol. Not all such facilities are towers: NASA Glenn's Zero Gravity Research Facility is based on a vertical shaft, extending to below ground level. Typical operation For a typical materials science experiment, a sample of the material under study is loaded into the top of the drop tube, which is filled with inert gas or evacuated to create a low-pressure environment. Following any desired preprocessing (e.g. induction heating to melt a metal alloy), the sample is released to fall to the bottom of the tube. During its flight or upon impact the sample can be charac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Die (manufacturing)
A die is a specialized machine tool used in manufacturing industries to cut and/or form material to a desired shape or profile. Stamping dies are used with a press, as opposed to drawing dies (used in the manufacture of wire) and casting dies (used in molding) which are not. Like molds, dies are generally customized to the item they are used to create. Products made with dies range from simple paper clips to complex pieces used in advanced technology. Continuous-feed laser cutting may displace the analogous die-based process in the automotive industry, among others. Die stamping Blanking and piercing are two die cutting operations, and bending is an example of a die forming operation. Die forming Forming operations work by deforming materials like sheet metal or plastic using force ( compression, tension, or both) and rely on the material's mechanical properties. Forming dies are typically made by tool and die makers and put into production after mounting into a pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swaging
Swaging () is a forging process in which the dimensions of an item are altered using dies into which the item is forced. Swaging is usually a cold working process, but also may be hot worked. The term swage may apply to the process (verb) or to a die or tool (noun) used in that process. Origin The term "swage" comes from the Old French term ''souage'', meaning "decorative groove" or "ornamental moulding". Swages were originally tools used by blacksmiths to form metal into various shapes too intricate to make with a hammer alone. These have handles for holding or pegs for attaching to an anvil, and often a flat head for striking with a hammer. Swage blocks are anvil-like dies with various shapes forged into them, which are also used for forming metal. Swages called " fullers" are specific to making grooves in swords and knives. ''Swage'' is most often pronounced ( AHD format: swāj). Another (less common) pronunciation sometimes heard in the metalworking industries is (A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bliemeister Method
Shot is a collective term for small spheres or pellets, often made of lead. These were the original projectiles for shotguns and are still fired primarily from shotguns and less commonly from riot guns and grenade launchers, although shot shells are available in many pistol calibers in a configuration called "birdshot", "rat-shot", or " snake shot". Lead shot is also used for a variety of other purposes such as filling cavities with dense material for weight/balance. Some versions may be plated with other metals. Lead shot was originally made by pouring molten lead through screens into water, forming what was known as "swan shot", and, later, more economically mass-produced at higher quality using a shot tower. The ''Bliemeister method'' has supplanted the shot tower method since the early 1960s. Manufacture Producing lead shot from a shot tower was pioneered in the late 18th century by William Watts of Bristol who adapted his house on Redcliffe Hill by adding a three-storey ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australia
Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, smaller islands. With an area of , Australia is the largest country by area in Oceania and the world's List of countries and dependencies by area, sixth-largest country. Australia is the oldest, flattest, and driest inhabited continent, with the least fertile soils. It is a Megadiverse countries, megadiverse country, and its size gives it a wide variety of landscapes and climates, with Deserts of Australia, deserts in the centre, tropical Forests of Australia, rainforests in the north-east, and List of mountains in Australia, mountain ranges in the south-east. The ancestors of Aboriginal Australians began arriving from south east Asia approximately Early human migrations#Nearby Oceania, 65,000 years ago, during the Last Glacial Period, last i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Redcliffe Shot Tower
The Redcliffe Shot Tower was a historic shot tower in the English city of Bristol. It was the progenitor of many similar towers built around the world. The tower stood at the corner of Redcliffe Hill and Redcliffe Parade, in the suburb of Redcliffe, between the years of 1782 and 1968. In 1775, William Watts, a plumber, started converting his house, near St Mary Redcliffe Church, into the world's first shot tower, in order to make lead shot by his innovative tower process. He did this by adding a tower atop his house, and by excavating a shaft into the soft sandstone below, achieving a total drop of around . By 1782, the tower was complete and in production, and Watts was granted a patent on his process, which involved pouring molten lead through a perforated zinc pan into water below. William Watts was declared bankrupt in 1794, but his tower survived various changes of ownership until it was taken over by the Sheldon Bush and Patent Shot Company Limited in 1868. The tower re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Redcliffe, Bristol
Redcliffe, also known as Redcliff, is a district of the English port city of Bristol, adjoining the city centre to the northwest. It is bounded by the loop of the Floating Harbour (including ''Bathurst Basin'') to the west, north and east, together with the New Cut of the River Avon to the south. Most of Redcliffe lies within the city ward of Lawrence Hill, although the westernmost section, including the cliffs and hill from which the area takes its name, is in Cabot ward.Ordnance Survey (2005). ''OS Explorer Map 155 - Bristol & Bath''. . Bristol Temple Meads station is located in Redcliffe. Redcliffe takes its name from the red sandstone cliffs which line the southern side of the Floating Harbour, behind ''Phoenix Wharf'' and ''Redcliffe Wharf''. These cliffs are honey-combed with tunnels, known as the Redcliffe Caves, constructed both to extract sand for the local glass making industry and to act as store houses for goods. Part of the last remaining glass kiln in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
