|
Ceramic Shell Casting
Ceramic forming techniques are ways of forming ceramics, which are used to make everything from tableware such as teapots to engineering ceramics such as computer parts. Pottery techniques include the potter's wheel, slip casting and many others. Methods for forming powders of ceramic raw materials into complex shapes are desirable in many areas of technology. For example, such methods are required for producing advanced, high-temperature structural parts such as heat engine components, recuperators and the like from powders of ceramic raw materials. Typical parts produced with this production operation include impellers made from stainless steel, bronze, complex cutting tools, plastic mould tooling, and others. Typical materials used are: wood, metal, water, plaster, epoxy and STLs, silica, and zirconia. This production operation is well known for providing tools with dimensional stability, surface quality, density and uniformity. For instance, on the slip casting process the ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceramic
A ceramic is any of the various hard, brittle, heat-resistant and corrosion-resistant materials made by shaping and then firing an inorganic, nonmetallic material, such as clay, at a high temperature. Common examples are earthenware, porcelain, and brick. The earliest ceramics made by humans were pottery objects (''pots,'' ''vessels or vases'') or figurines made from clay, either by itself or mixed with other materials like silica, hardened and sintered in fire. Later, ceramics were glazed and fired to create smooth, colored surfaces, decreasing porosity through the use of glassy, amorphous ceramic coatings on top of the crystalline ceramic substrates. Ceramics now include domestic, industrial and building products, as well as a wide range of materials developed for use in advanced ceramic engineering, such as in semiconductors. The word "'' ceramic''" comes from the Greek word (), "of pottery" or "for pottery", from (), "potter's clay, tile, pottery". The earliest kno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polymer Derived Ceramics
Polymer derived ceramics (PDCs) are ceramic materials formed by the pyrolysis of preceramic polymers, usually under inert atmosphere. The compositions of PDCs most commonly include silicon carbide (SiC), silicon oxycarbide (SiOxCy), silicon nitride(Si3N4), silicon carbonitride (Si3+xN4Cx+y) and silicon oxynitride (SiOxNy). The composition, phase distribution and structure of PDCs depend on the polymer precursor compounds used and the pyrolysis conditions applied. The key advantage of this type of ceramic material is the versatility afforded by the use of polymeric precursors in terms of processing and shaping. Polymer derived ceramics can be additively manufactured (3D printed) my means of stereolithography that uses photopolymerization of preceramic polymers. Such processing of PDCs is used in applications requiring thermally and chemically stable materials in complex shapes that are challenging to achieve through more conventional ceramic processing routes, such as powder sinteri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doctor Blade
In printing the doctor blade (from ''ductor blade'') removes the excess ink from the smooth non-engraved portions of the anilox roll and the land areas of the cell walls. Doctor blades are also used in other printing and coating processes, such as flexo and pad printing for the same function. It is believed that the name derives from the blades used in flatbed letterpress equipment for blades used to wipe ductor rolls, and "ductor" became doctor. Design In a single blade ink system or dual blade ink system, the blade removes the excess ink from the cylinder or anilox roll to create a uniform layer of ink to be transferred to the printing plate. The blade/anilox combination is designed such that it is (chiefly) the blade which wears away, not the anilox roll. The doctor blade is a relatively cheap and disposable consumable, while the gravure cylinder or flexo anilox is a more expensive component of the press. Typical materials for the blade are steel or polymer: gravure cylinders ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paperclay
Paper clay (sometimes referred to as fiberclay) is any clay body to which processed cellulose fiber (paper being the most common) has been added. Earthenware, terra cotta, stoneware, porcelain and bone china clay bodies can be made into paper clay. The more fiber added to the clay body, the stronger the unfired dry paper clay, but the weaker the fired body. The less fiber added to the clay body, the weaker the unfired dry paper clay, but the stronger the fired body. Conventional soft clay building techniques can be used with soft paper clay. This is because there is no physical difference between soft clay and the same clay as a soft paper clay, except the addition of a small percentage of tiny inert cellulose fibers. However, using less fiber in paper clay on the potters wheel is recommended, particularly if the leather hard work is to be trimmed on the wheel. Paper clay can be made from left over throwing slip from wheel throwing. It is widely used by potters to repair c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coiling (pottery)
Coiling is a method of creating pottery. It has been used to shape clay into vessels for many thousands of years. It is found across the cultures of the world, including Africa, Greece, China, and Native American cultures of New Mexico. Using the coiling technique, it is possible to build thicker or taller walled vessels, which may not have been possible using earlier methods. The technique permits control of the walls as they are built up and allows building on top of the walls to make the vessel look bigger and bulge outward or narrow inward with less danger of collapsing. To do this, the potter takes a pliable material (usually clay) then rolls it until it forms a coil, or long pliable cylinder. By placing one coil on top of another, different shapes can be formed. As this is done while the clay is still fresh and soft, individual coils can be joined seamlessly with simple pressure, rather than by scoring and/or applying slip Slip or SLIP may refer to: Science and technol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hard Slab
Hard may refer to: * Hardness, resistance of physical materials to deformation or fracture * Hard water, water with high mineral content Arts and entertainment * Hard (TV series), ''Hard'' (TV series), a French TV series * Hard (band), a Hungarian hard rock supergroup * Hard (music festival), in the U.S. * Hard (EP), ''Hard'' (EP), Goodbye Mr Mackenzie, 1993 * Hard (Brainpower album), ''Hard'' (Brainpower album), 2008 * Hard (Gang of Four album), ''Hard'' (Gang of Four album), 1983 * Hard (Jagged Edge album), ''Hard'' (Jagged Edge album), 2003 * Hard (song), "Hard" (song), a 2009 song by Rihanna * "Hard", a song by Royce da 5'9" from the 2016 album ''Layers (Royce da 5'9" album), Layers'' * "Hard", a song by Why Don't We from the 2018 album ''8 Letters'' * ''Hard'', a 2017 EP from the band The Neighbourhood *"Hard", a song by Sophie from the 2015 compilation album Product (Sophie album), ''Product'' Places * Hard, Austria * Hard (Zürich), Switzerland Other uses * Hard (surname) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soft Slab
Soft may refer to: * Softness, or hardness, a property of physical materials Arts and entertainment * ''Soft!'', a 1988 novel by Rupert Thomson * Soft (band), an American music group * ''Soft'' (album), by Dan Bodan, 2014 * Softs (album), by Soft Machine, 1976 * "Soft", a song by Kings of Leon on the 2004 album ''Aha Shake Heartbreak'' * "Soft"/"Rock", a 2001 single by Lemon Jelly Other uses * Sorgenti di Firenze Trekking (SOFT), a system of walking trails in Italy * Soft matter, a subfield of condensed matter * Magnetically soft, material with low coercivity * Soft skills, a person's people, social, and other skills * Soft commodities, or softs *A flaccid penis Tumescence is the quality or state of being tumescent or swollen. Tumescence usually refers to the normal engorgement with blood (vascular congestion) of the erectile tissues, marking sexual excitation, and possible readiness for sexual activity. ..., the opposite of "hard" See also * * * Softener (disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinch Pot
A pinch pot is a simple form of hand-made pottery produced from ancient times to the present. The pinching method is to create pottery that can be ornamental or functional, and has been widely employed across culture. The method used is to simply have a lob of clay, then pinch it to the shape desired. Pinch pots are the simplest and fastest way of making pottery,3 Ways to Make Pinch Pots - Pottery Tips by the Pottery Wheel thepotterywheel.com, accessed 12 July 2021 simply by pinching the clay into shape by using thumb and fingers. Simple vessels such as bowls and cups of various sizes can be formed and shaped by hand using a methodical pinching process in which the clay walls ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paraffin Wax
Paraffin wax (or petroleum wax) is a soft colorless solid derived from petroleum, coal, or oil shale that consists of a mixture of hydrocarbon molecules containing between 20 and 40 carbon atoms. It is solid at room temperature and begins to melt above approximately , and its boiling point is above . Common applications for paraffin wax include lubrication, electrical insulation, and candles; dyed paraffin wax can be made into crayons. It is distinct from kerosene and other petroleum products that are sometimes called paraffin. Un-dyed, unscented paraffin candles are odorless and bluish-white. Paraffin wax was first created by Carl Reichenbach in Germany in 1830 and marked a major advancement in candlemaking technology, as it burned more cleanly and reliably than tallow candles and was cheaper to produce. In chemistry, ''paraffin'' is used synonymously with ''alkane'', indicating hydrocarbons with the general formula C''n''H2''n''+2. The name is derived from Latin ''parum'' (" ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Injection Moulding
Injection moulding (U.S. spelling: injection molding) is a manufacturing process for producing parts by injecting molten material into a mould, or mold. Injection moulding can be performed with a host of materials mainly including metals (for which the process is called die-casting), glasses, elastomers, confections, and most commonly thermoplastic and thermosetting polymers. Material for the part is fed into a heated barrel, mixed (using a helical screw), and injected into a mould cavity, where it cools and hardens to the configuration of the cavity. After a product is designed, usually by an industrial designer or an engineer, moulds are made by a mould-maker (or toolmaker) from metal, usually either steel or aluminium, and precision-machined to form the features of the desired part. Injection moulding is widely used for manufacturing a variety of parts, from the smallest components to entire body panels of cars. Advances in 3D printing technology, using photopolymers that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spark Plug
A spark plug (sometimes, in British English, a sparking plug, and, colloquially, a plug) is a device for delivering electric current from an ignition system to the combustion chamber of a spark-ignition engine to ignite the compressed fuel/air mixture by an electric spark, while containing combustion pressure within the engine. A spark plug has a metal threaded shell, electrically isolated from a central electrode by a ceramic insulator. The central electrode, which may contain a resistor, is connected by a heavily insulated wire to the output terminal of an ignition coil or magneto. The spark plug's metal shell is screwed into the engine's cylinder head and thus electrically grounded. The central electrode protrudes through the porcelain insulator into the combustion chamber, forming one or more spark gaps between the inner end of the central electrode and usually one or more protuberances or structures attached to the inner end of the threaded shell and designated the ''side ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
