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Pot Metal
Pot metal (or monkey metal) is an alloy of low-melting point metals that manufacturers use to make fast, inexpensive castings. The term "pot metal" came about because of automobile factories' practice in the early 20th century of gathering up non-ferrous metal scraps from the manufacturing processes and melting them in one pot to form into cast products. Small amounts of iron often made it into the castings but never in significant quantity because too much iron would raise the melting point too high for simple casting operations. In stained glass, "pot metal" or pot metal glass refers to glass coloured with metal oxides while it is molten (in a pot), as opposed to other methods of colouring glass in sheet form. Metallurgy There is no metallurgical standard for pot metal. Common metals in pot metal include zinc, lead, copper, tin, magnesium, aluminum, iron, and cadmium. The primary advantage of pot metal is that it is quick and easy to cast. Because of its low melting temperature ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toy Road Roller (AM 1996
A toy or plaything is an object that is used primarily to provide entertainment. Simple examples include toy blocks, board games, and dolls. Toys are often designed for use by children, although many are designed specifically for adults and pets. Toys can provide utilitarian benefits, including physical exercise, cultural awareness, or academic education. Additionally, utilitarian objects, especially those which are no longer needed for their original purpose, can be used as toys. Examples include children building a fort with empty cereal boxes and tissue paper spools, or a toddler playing with a broken TV remote. The term "toy" can also be used to refer to utilitarian objects purchased for enjoyment rather than need, or for expensive necessities for which a large fraction of the cost represents its ability to provide enjoyment to the owner, such as luxury cars, high-end motorcycles, gaming computers, and flagship smartphones. Playing with toys can be an enjoyable way of trai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Welding
Welding is a fabrication (metal), fabrication process that joins materials, usually metals or thermoplastics, primarily by using high temperature to melting, melt the parts together and allow them to cool, causing Fusion welding, fusion. Common alternative methods include solvent welding (of thermoplastics) using chemicals to melt materials being bonded without heat, and #Solid-state welding, solid-state welding processes which bond without melting, such as pressure, cold welding, and diffusion bonding. Metal welding is distinct from lower temperature bonding techniques such as brazing and soldering, which do not melt the base metal (parent metal) and instead require flowing a filler metal to solidify their bonds. In addition to melting the base metal in welding, a filler material is typically added to the joint to form a pool of molten material (the weld pool) that cools to form a joint that can be stronger than the base material. Welding also requires a form of shield to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zinc Pest
Zinc pest (from German ''Zinkpest'' "zinc plague"), also known as zinc rot, mazak rot and zamak rot, is a destructive, intercrystalline corrosion process of zinc alloys containing lead impurities. Prepared under the direction of the ASM International Handbook Committee. While impurities of the alloy are the primary cause of the problem, environmental conditions such as high humidity (greater than 65%) may accelerate the process. It was first discovered to be a problem in 1923, and primarily affects die-cast zinc articles that were manufactured during the 1920s through 1950s. The New Jersey Zinc Company developed zamak alloys in 1929 using 99.99% pure zinc metal to avoid the problem, and articles made after 1960 are usually considered free of the risk of zinc pest since the use of purer materials and more controlled manufacturing conditions make zinc pest degradation unlikely. Affected objects may show surface irregularities such as small cracks and fractures, blisters or pit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zinc Aluminium
Zinc-aluminium (ZA) alloys are alloys whose main constituents are zinc and aluminium. Other alloying elements include magnesium and copper. This type of alloy was originally developed for gravity casting. Noranda, New Jersey Zinc Co. Ltd., St. Joe Mineral Co. and the International Lead Zinc Research Organization (ILZRO) were the main companies that pioneered the ZA alloys between the 1950s and the 1970s. They were designed to compete with bronze, cast iron and aluminium using sand and permanent mold casting methods. Distinguishing features of ZA alloys include high as-cast strength, excellent bearing properties, as well as low energy requirements (for melting). ZA alloys make good bearings because their final composition includes hard eutectic zinc-aluminium-copper particles embedded in a softer zinc-aluminium matrix. The hard particles provide a low-friction bearing surface, while the softer material wears back to provide space for lubricant to flow, similar to Babbitt metal. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zamak
ZAMAK (or Zamac, formerly trademarked as MAZAK) is an eclectic family of alloys with a base metal of zinc and alloying elements of aluminium, magnesium, and copper. Zamak alloys are part of the zinc aluminium alloy family; they are distinguished from the other ZA alloys because of their constant 4% aluminium composition. The name ''zamak'' is an acronym of the German names for the metals of which the alloys are composed: (zinc), , and (copper). The New Jersey Zinc Company developed zamak alloys in 1929. The most common zamak alloy is zamak 3. Besides that, zamak 2, zamak 5 and zamak 7 are also commercially used. These alloys are most commonly die cast. Zamak alloys (particularly #3 and #5) are frequently used in the spin casting industry. A large problem with early zinc die casting materials was zinc pest, owing to impurities in the alloys. Zamak avoided this by the use of 99.99% pure zinc metal, produced by New Jersey Zinc's use of a refluxer as part of the refining p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White Metal
The white metals are a series of often decorative bright metal alloys used as a base for plated silverware, ornaments or novelties, as well as any of several lead-based or tin-based alloys used for things like bearings, jewellery, miniature figures, fusible plugs, some medals and metal type. The term is also used in the antiques trade for an item suspected of being silver, but not hallmarked. A white metal alloy may include antimony, tin, lead, cadmium, bismuth, and zinc (some of which are quite toxic). Not all of these metals are found in all white metal alloys. Metals are mixed to achieve a desired goal or need. As an example, a base metal for jewellery needs to be castable, polishable, have good flow characteristics, have the ability to cast fine detail without an excessive amount of porosity and cast at between . Silver In compliance with British law, the British fine art trade uses the term "white metal" in auction catalogues to describe foreign silver items which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pewter
Pewter () is a malleable metal alloy consisting of tin (85–99%), antimony (approximately 5–10%), copper (2%), bismuth, and sometimes silver. In the past, it was an alloy of tin and lead, but most modern pewter, in order to prevent lead poisoning, is not made with lead. Pewter has a low melting point, around , depending on the exact mixture of metals. The word ''pewter'' is possibly a variation of " spelter", a term for zinc alloys (originally a colloquial name for zinc). History Pewter was first used around the beginning of the Bronze Age in the Near East. The earliest known piece of pewter was found in an Egyptian tomb, , but it is unlikely that this was the first use of the material. Pewter was used for decorative metal items and tableware in ancient times by the Egyptians and later the Romans, and came into extensive use in Europe from the Middle Ages [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Babbitt (alloy)
Babbitt metal or bearing metal is any of several alloys used for the bearing surface in a plain bearing. The original Babbitt alloy was invented in 1839 by Isaac Babbitt in Taunton, Massachusetts, United States. He disclosed one of his alloy recipes but kept others as trade secrets.Isaac Babbitt"Mode of making boxes for axles and gudgeons," U.S. patent no. 1,252 (issued: July 17, 1839). Babbitt did not patent his alloy, although he does state its formulation: "The inner parts of the boxes are to be lined with any of the harder kinds of composition known under the names of britannia metal or pewter, of which block tin is the basis. An excellent compound for this purpose I have prepared by taking about 50 parts of tin, five of antimony, and one of copper, but I do not intend to confine myself to this particular composition." Other formulations were developed later.. Like other terms whose eponymous origin is long-since deemphasized (such as ''diesel engine'' or ''eustachian tube' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
His Master's Voice (British Record Label)
His Master's Voice was a British record label established in 1909. Whilst mainly releasing in the United Kingdom, the label also released in select European and African territories. Sister labels were also created, such as an Indian version, that lasted until 2003. "His Master's Voice" was a trademark of the Gramophone Company Limited (later part of EMI). In 1909, the Gramophone Company replaced the "Recording Angel" trademark with the image of Nipper the dog, listening to "His Master's Voice" on their record labels; thereafter, the records were commonly referred to as "His Master's Voice" (or HMV) records, due to the prominence of that phrase along the upper rim of the labels. The "His Master's Voice" trademark was used worldwide by The Gramophone Company/EMI and affiliated labels, except for most of the Western Hemisphere and Japan, where the rights to the trademark were owned by the Victor Talking Machine Company/RCA Victor and the Victor Company of Japan/ JVC, respectivel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Borz
The name Borz ( Chechen: Борз, "wolf") is an umbrella term applied to all improvised submachine guns produced during the years of independence of the Chechen Republic of Ichkeria. It was produced in small numbers from 1992 to 1999. The initial model was based on the Armenian K6-92, which in turn was based on the PPS submachine gun. History Production of the first model started in 1992 at the "Krasniy Molot" plant in Grozny. Only a few hundred Borzes were crafted at the "Krasniy Molot" plant, because production at this plant was stopped by the First Chechen War, and moved into underground workshops. Design and deployment The Borz was initially a clone of the Armenian K6-92,M. R. PopenkerK6-92 / Borz submachine gun (Armenia / Russia)("Modern Firearms") which itself was loosely based on the Soviet PPS submachine gun. However, individual models can vary greatly, since the Borz is neither a single model of weapon, nor made by a particular weapon manufacturer, but a common name ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torque
In physics and mechanics, torque is the rotational analogue of linear force. It is also referred to as the moment of force (also abbreviated to moment). The symbol for torque is typically \boldsymbol\tau, the lowercase Greek letter ''tau''. When being referred to as moment of force, it is commonly denoted by . Just as a linear force is a push or a pull applied to a body, a torque can be thought of as a twist applied to an object with respect to a chosen point; for example, driving a screw uses torque to force it into an object, which is applied by the screwdriver rotating around its axis to the drives on the head. Historical terminology The term ''torque'' (from Latin , 'to twist') is said to have been suggested by James Thomson and appeared in print in April, 1884. Usage is attested the same year by Silvanus P. Thompson in the first edition of ''Dynamo-Electric Machinery''. Thompson describes his usage of the term as follows: Today, torque is referred to using d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dinky Liners With Zinc Pest
Dinky may refer to: Arts and entertainment * Dinky Toys, a brand of die-cast toy vehicles * Dinky (film), a 1935 film starring Jackie Cooper * Dinky Bossetti, protagonist of the 1990 film ''Welcome Home, Roxy Carmichael'', played by Winona Ryder * title character of '' Dinky Dog'', an animated segment on ''The All-New Popeye Hour'' TV series * Dinky Doodle, a cartoon character created by Walter Lantz in 1924 * Dinky Duck, a character in 14 Terrytoons cartoons from 1939 to 1957 * protagonist of the novel ''Dinky Hocker Shoots Smack'' by Marijane Meaker (under the pen name M. E. Kerr) and its TV adaptation * Dinky Little, a character in ''The Littles'' children's novel series and TV series of the same name * Dinky Doo, a placeholder name for a background baby unicorn in the children's cartoon '' My Little Pony: Friendship Is Magic'' People * Dinky Bingham (born 1963), African-American singer, musician, songwriter and producer * nickname of Corazon Soliman (born 1953), Filipin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
