BRASS CASTING FOUNDRY

manufacturer of brass casting,bronze casting and copper alloy castings with a percentage of rare metal.The first being quality products, second, a dedicated knowledgeable workforce,third,customer focus, and fourth, our continuous research & development in new technology and produce.We manufacture Copper Brass castings casting Aluminium Copper castings Brass casting Copper casting components parts machined parts,digital control making pattern usually with hot shell core for small and medium castings.Smart-Keen simple and accrate blowing cores machining does an excellent performance in blowing sand cores with metal housing usually in bronze,aluminium alloy foundry,or die castings pattern casting tooling or more non-ferrous metals. Brass,bronze and coppper alloy castings: DIN 1705 G-CuSn2ZnPb,G-CuZn15Si4,BS 1400 LG1,CMA1,CuZn40,NF

A53-707 CuZn23A14,CuZn40,ASTM B584 C86300,C87400. Actually non-ferrous metal including brass,bronze,cooper metal alloy,aluminium alloy,in the mean time,we as well make accurate pattern and shell cores,do casting and machining as per drawings and real samples using customer's required material alloy.There is another point that we have to touch on,we can make drawings and machine according to actul samples within 0.05 or 0.10 tolerance.And also Smart-keen is qualified to machining all the castings including ferrous and non-ferrous metals with onmibus machining tooling.. Usually, Smart-Keen casting technics includs wax investment casting,sand cast,die-cast,permanent molding castings,ect ent casting foundries in India have the ability to design and manufacture close tolerance precision cast-metal products for many different industries. These Investment Castings are high quality and very cost effective. Investment casting still remains one of the more popular methods for producing repeatable castings with significant cast-in features or details. Because investment castings or lost wax castings typically requires a large amount of labor, we are able to utilize our lower cost structures in India, and provide a low cost final product. We are also able to offer plating, finished machining and other secondary operations for your investment castings with little additional cost. Investment Casting Stainless steel investment casting, steel investment casting, aluminum investment casting, nickel alloy investment casting, cobalt alloy investment casting and iron investment casting are some of the processes used at our foundries. Our investment casting foundries in india are able to produce close tolerance or precision investment castings, with value added machining, plating, high finish and assembly if needed.

This allows us to produce a variety of investment castings for the industrial and energy related industries, including pressure-containing components. Unlike die castings, investment castings allow the use of ferrous and non-ferrous materials. The investment casting process or lost wax process provides a high quality affordable solution for repeatable metal products with cast-in details or features. Details and benefits of investment castings are listed at the links below. Please be sure to contact Cypress Industries for your die casting, sand casting, closed die forgings, turnings and powdered metal low-cost manufacturing needs in China as well. For chemical analysis and compositions for steel investment castings, stainless steel investment castings, iron investment castings, cobalt alloy investment castings, and nickel alloy investment castings. Investment Casting Investment Casting Investment Casting We are able to ship to any locations in the world. Please call to determine the large shipment transit time to your city.Brass casting, as the name suggests, involves the use of brass as the molten metal. Brass casting can be carried out by the way of sand casting only. Sand casting can be defined as a ‘cast part’ produced by formation of a mold from a mixture of sand and pouring the casting liquid (mostly molten metal) into mold. Brass is a great metal to cast with as it can provide some really great looking results. Many believe that brass, an alloy of zinc and copper, has been around since our prehistoric ancestors. Today brass is used for a multitude of products from coins to trumpets not to mention a whole bunch of other musical instruments.Casting General Learn Casting Casting Videos General Casting Videos Casting Processes Gravity Casting Die Casting Lost Wax Casting Lost Foam Casting Centrifugal Casting DIY Home Casting Metal Casting Bronze Casting Brass Casting Aluminum Casting Iron Casting Stainless Steel Casting Alloy Casting Lead Casting Pewter Casting Casting Supplies Casting Supplies Anvils Casting Tools Crucibles Casting Sand Casting Furnace Info Casting Furnaces Casting Torches Casting Burners Refractory Cupola Other Casting Types Art Casting Casting Jewelry Resin Casting Rubber Casting Concrete Casting Casting Misc Casting Molds Casting Associations Casting Media and News Casting Patterns Cuttle Casting Related to Casting Metalworking Blacksmith Patinas Brass casting, as the name suggests, involves the use of brass as the molten metal. Brass casting can be carried out by the way of sand casting only. Sand casting can be defined as a 'cast part' produced by formation of a mold from a mixture of sand and pouring the casting liquid (mostly molten metal) into mold. Then the air-cooling of the mold takes place. After the solidification of metal, the removal of mold takes place. The metal used here is brass.

It is a known fact that brass is an alloy of copper and zinc. Hence, to be precise, the molten metal consists of two elements. Sand molding consists of two types- 'Green sand' molding and 'air set' molding. The first one consists of a blend of moisture, clay, silica sand and other additives. The second one makes use of dry sand bonded to all the above materials except moist clay, by the way of using an adhesive, which is fast curing. At times, there is a placing of a temporary plug (in the mold cavity) to enable the formation of a channel to pour the fluid which is to be molded. The molds of the second type, i.e. the air-set molds result in the formation of a 2-part mold. The two parts are bottom and top. The tamping-down of the sand mixture takes place as it gets added. Many a times, the final assembly of the mold is vibrated to get the sand compacted and get the unwanted voids filled. Then the molten alloy (brass) gets poured into mold. After the solidification and cooling of brass, the separation of casting from sand mold takes place. Normally, such molds are one-time usable. Manufactures Custom Brass Belt Buckles, Key Fobs, Money Clips, Medallions, Small Plaques, and Castings. All of the Products that we make are Sand-Cast Solid Brass. Handmade in the United States of America and Come with a manufacturing the highest quality solid brass belt buckles made. Our specialized services include custom designed belt buckles along with our own original belt buckles and other castings. Each custom belt buckle begins with an idea for the design. We will work up a graphic artwork proposal for you to review. Once approved a “Straight Design” or “Sculptured Design” master pattern is made. Specially formulated sand is mixed and pressed into a sand-box mold with an antique production press. The pattern is removed from the sand and the detail of the belt buckle is left imprinted into the sand mold. The sand mold is checked for detail, carefully put back together leaving an empty cavity inside. It is then prepared for casting. In a small furnace, when the molten bronze has reached the casting temperature of close to 2000˚, it is carefully hand poured into the sand-box molds. Filling the empty cavity left by the pattern impression. After completely cooling the castings are broken-out of the sand-box molds. The sand is reprocessed. The castings are then sand-blasted, and cleaned, inspected for detail and quality, only the best castings are used for our belt buckles.

Using a variety of finishing techniques, a skilled craftsman hand polishes the belt buckle to a brilliant shine. Hand brazing the hoop and prong on the back of the buckle insures a permanent attachment. Every individual finished belt buckle is strength tested and inspected to assure that it meets our strict standards Lifetime Guarantee of Quality Craftsmanship Metal Casting Site Info Metal Casting Links The copper alloys may be endowed with a wide range of properties by varying their composition and the mechanical and heat treatment to which they are subjected. For this reason they probably rank next to steel in importance to the engineer. The important alloys of copper and zinc from an industrial point of view are the brasses comprised within certain limits of zinc content. The addition of zinc to copper results in the formation of a series of solid solutions which, in accordance with usual practice, are referred to in order of diminishing copper content as the á, â,a, etc., constituents. The copper alloys may be endowed with a wide range of properties by varying their composition and the mechanical and heat treatment to which they are subjected. For this reason they probably rank next to steel in importance to the engineer. The important alloys of copper and zinc from an industrial point of view are the brasses comprised within certain limits of zinc content. That portion of the constitutional diagram which refers to these alloys is given in the Figure 1. Figure 1. Constitutional Diagram of the Copper-Zinc Alloys The addition of zinc to copper results in the formation of a series of solid solutions which, in accordance with usual practice, are referred to in order of diminishing copper content as the a, b, g, etc., constituents. The diagram may be summarized as follows: Percentage composition Constituent just below the freezing point Constituent after slow cooling to 400°C Copper Zinc 100 to 67.5 0 to 32.5 a a 67.5 to 63 32.5 to 37 a + b a 63 to 61 37 to 39 b a 61 to 55.5 39 to 45.5 b a + b` 55.5 to 50 45.5 to 50 b b` 50 to 43.5 50 to 56.5 b b` + g 43.5 to 41 56.5 to 59 b + g b` + g Further changes in composition of the a and b` phases below 400°C are only observed after prolonged annealing. There is a certain connection between the properties and the microstructure which may be expressed in general terms. The tensile strength increases with increase in zinc content, rises somewhat abruptly with the appearance of b, and reaches a maximum at a composition corresponding roughly to equal parts of a and b. It falls off rapidly at the appearance of the g constituent. Elongation rises to a maximum and begins to fall again before the composition reaches the limit of the a solution. It falls considerably as the amount of b increases, and is very small in the presence of g. The a constituent shows the greatest resistance to shock. This is diminished by the presence of b, and the alloy becomes extremely brittle when g is present. Hardness is greatly increased by the presence of b and still further when g appears. Alloys containing a phase only are specially suitable for cold working, and may be hot- or cold rolled. Those containing a and b will suffer very little deformation without rupture in the cold rolling and may only be hot rolled. The b constituent may also be forged, rolled or hot extruded, but alloys containing g should invariably be avoided for any mechanical treatment. Designation system of brasses The brasses of industrial importance are often designated by their copper and zinc content. C 23000 - Red Brass (85 Cu, 15 Zn) This alloy is used for ornaments and for cheap jewellery which is to be gilded: it withstands cold-work, cupping, etc. On account of the range of solidification,

the cast material has a dendritic structure. If cooled very slowly or annealed, diffusion takes place, yielding polyhedral grains of uniform composition. The process of diffusion is assisted by mechanical deformation of the grains by hot- or cold work followed by annealing. The changes which occur in rolling and annealing are similar to those described for 70:30 brass. C 26000 - Cartridge Brass (70 Cu: 30 Zn) This alloy, which is used widely for tubes, sheets and wires, also shows a dendritic structure of the a solid solution when chill fast. The b constituent does not begin to appear in the cast structure until the zinc exceeds 32% except in the presence of an additional element like aluminum or tin. After annealing, the alloy consists of homogeneous solid solution, and it is specially suitable for cold-working. To withstand this treatment, especially drawing, it is necessary that the brass should be perfectly sound and free from impurities. Since high grade 70:30 brass is usually made from the purest copper and zinc available without admixture of any but the cleanest scrap, these impurities are chiefly inclusions of dross (oxides or silicates) or charcoal. Such inclusions, if present, frequently lead to failure of the material during manufacture or in use. They become entrapped in the solidifying metal, either by splashing or by rapid solidification in moulds of small cross section. It is a frequent procedure in casting brass to draw it into rod to employ very long moulds of very small cross section, in order to minimize subsequent mechanical treatment. Ingots made in such moulds are most liable to contain inclusions and to show piping to a great depth, resulting in central unsoundness over a considerable length of the ingot. To ensure soundness it is necessary to cast in a mould such that the cross section is large enough to give relatively slow cooling. The mould and stream of molten metal should be so arranged as to avoid splashing; the dimensions of the mould and speed of pouring should be such as to result in the ingot solidifying from bottom upwards. The effect of cold-work on the microstructure is to break down the crystal grains by plastic deformation, and so crush them into confused debris. Annealing after cold-work results in recrystalization and subsequent crystal growth. C 28000 - Muntz Metal (60 Cu: 40 Zn) The molten metal begins to freeze at about 905°C, and dendrites of the b solution are formed. With sufficiently slow cooling through the range of solidification the alloy consists of homogeneous b constituent when just solid, but, on cooling, this solution retains less copper and at 770°C the a constituent separates from the homogeneous b and increases in amount as the temperature falls. The structure on reaching atmospheric temperature is therefore a mixture of a and b, the relative proportions of which may be controlled to some extent by the rate of cooling. For example, a thin section of 60:40 brass quenched from 800°C consists of homogeneous b. With a larger section it is impossible to suppress completely the separation of a, but a specimen rapidly cooled from this temperature always contains more b than a specimen more slowly cooled. These microstructural characteristics are accompanied by changes in mechanical properties which can be deduced from the known hardness and brittleness of the b constituent and the softness and ductility

of the a constituent. Hot-rolled 60:40 brass, the rolling of which has been stopped above 700°C, shows a uniform structure in longitudinal and transverse directions. After the separation, the a and b constituents are each elongated in the direction of rolling, giving the normal structure of rolled 60:40 brass. The lower temperature of finishing, the smaller will be the grain size. If, however, rolling is continued much below 600°C, recrystalization does not keep pace with the deformation and the metal is cold-worked. Brazing solder (50 Cu: 50 Zn) This alloy, if cooled sufficiently slowly through the range of solidification, consists of homogeneous b solution, which, however, may decompose on cooling if the copper content is less than 50%. At atmospheric temperature the b solution will retain a maximum of just 50% of zinc if no impurities are present, but any content of zinc over 50% causes the separation of the g constituent, which increases in amount as the temperature falls. Its presence renders the alloy extremely hard and brittle.  

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