Metal,Art,Casting,and,Overview technology Metal Art Casting and Metal Art Overview
The electronic cigarette is not new. People who buy electronic cigarette knows that this product has been in the market for years now. Despite some sectors apparently trying to shoot the product down from the shelves, the popularity of elect Active shredder safety technology for the small office. Shreds 15sheets per pass into 5/32" x 1-1/2" cross-cut particles (Security Level3). Patented SafeSense® Technology stops shredding when hands touch thepaper opening. Designated shredde
Casting is one of the earliest known forms of metal working.In its most basic form, it involves heating metal until it is molten and thenpouring it into a mold. As the metal cools it takes the shape of the mold.Early castings were crude in finish with a lot of surface anomalies thatrequired a great deal of machine work to get the desired quality of surfacetexture. Modern casting techniques produce very fine tolerances and the castingrequires little or no finishing work. The artist who creates metal art castings needs to be both afoundry man and an artist. Bronze is oneof the earliest alloys known to man and is made up of tin and copper. Beingmalleable, it becomes a liquid of low viscosity when melted and thus has theability to fill even small crevices in a mold, allowing for the production ofcastings with fine detail. Although bronze castings are the most common, nearlyany metal can be cast. The artist needs to know what kind of mold to use withwhat metal. And he needs to know how to melt metal. The casting process starts with the creation of the mold.The most common type is called the Lost Wax Casting method. Being simple tocreate and with the ability to create molds with fine detail, it is theartists favorite. First the artistcreates a wax sculpture. This sculpture is then used to create a mold. Moldscan be made from a variety of materials from sand to latex, depending on theamount of detail required. Latex is used when extremely fine detailing isinvolved since it forms a skin like coating on the sculpture and picks up eventhe minutest detail. The sculpture is then removed from the mold. Molten wax is then poured in the mold until the requiredthickness is achieved and the wax copy is then removed and any imperfections onthe surface removed. A shell is then built around the copy using a mixture ofsand and liquid silica. The shell is heated until the wax melts and runs outthrough a drain hole left in the shell. The final mold is then ready and the molten metal is pouredinto it. After it has cooled and taken the shape of the mold, the shell isremoved and the finished casting is available. The artist then removes and imperfections that may remain onthe casting after which it is either painted of coated to give it the desiredfinish. Metal art castings may be of any size, from the smallestpiece of gold jewelry to a huge cast statue to big to even fit indoors. Theadvantage of this type of metal art is the fine detail that can be produced.Modern metal melting techniques ensure that the molten metal that enters themold is without imperfections and strong enough to securely hold a diamond (inthe case of jewelry) or withstand the rigors of nature (in the case of garden sculptures). Additionally, once the mold is made, numerouscopies of the art work may be produced.
Metal,Art,Casting,and,Overview