Brass Casting Guide
Brass casting is a type of copper casting, which is the casting technology applied in the mineral brass. Copper and brass is different in some extent. Different from brass, copper is the base metal, yet brass is an alloy material instead. Metal copper has its own position in the periodic table of the chemical elements, while brass has no. Brass casting technique was found very early in the human history, and brass alloys were also used in many phases in the ancient metal working industry.
Casting brass were once the primary materials due to its hardness level. The hardness of brass is at level three according to the Mohs scale, just like the material copper, and that was hard enough for ancient citizens to do their jobs at that time. Also, because the melting point of copper is around 940 degree Celsius, so it was relatively easy to achieve this point of temperature level for people to do brass casting jobs in the old days.
Brass Casting vs. Steel Casting
Not like the brass casting process that happened thousands of years ago, steel casting was found about four thousand years, which is later than the usages of steels. Steel casting is similar to iron casting in many ways, and in the metal working industry, iron casting, or cast iron, is a metalworking process that produces a group of iron-carbon alloys with carbon content greater than 2%. Its applicability derives from its relatively low melting temperature level.
Further, the alloy constituents affect its color when fractured, that is, white cast iron has carbide impurities which allow cracks to pass straight through, grey cast iron has graphite flakes which deflect a passing crack and will initiate countless new cracks as the material breaks. In the metal working industry, cast iron is a group of iron carbon alloys with carbon content greater than a certain level of percentages and ratios.
Brass Casting vs. Ductile Casting
Similar to steel casting, ductile casting is another case to be put together for comparison with the brass casting. The casting of ductile iron is also called as the ductile cast iron. A ductile metal can be bent or stretched with no hard works as it is much flexible due to its composing elements.
Also, the ductile casting is a type of graphite rich cast iron product. This casting method was firstly invented during the mid of 20th century. Since ductile materials are much easier to be bent and stretched, this kind of material contains more fatigue resistance capability. This essence can attribute to the addition of the nodular graphite element. With this nature, the ductile is not like ordinary cast irons that are often weak in tension issues and are brittle to hard impacts. To be specific, ductile iron is actually not a single material with homogeneous element. Rather, it is one portion of a mass of materials that can be produced with a wide variety of properties through the management of the microstructure constitution.
Casting Brass Methods and Sand Casting
Casting brass process belongs to casting process, and casting process is a manufacturing procedure that a liquid material is usually poured into a mold, which contains a hollow cavity of the desired shape, and then the hot and liquid state materials are allowed to solidify to a solid state. Sand casting is the method that can apply to many types of metal casting processes. Sand casting is relatively reasonable and reliable.
There are a wide variety of casting processes in the industry and copper alloys can be widely applied to the electronic engineering fields due to their excellent conductivity. Besides the brass, copper is also very practical. In the process of copper concentration, the average of copper ores contains 0.6%, these minerals are concentrated from the crushed forms to a higher level around 10 % to 15% with the bioleaching method as the main method. Later, with a series of refining methods, the final copper alloys can be made.
After the formation of the brass or brass alloys, the formed materials would be delivered to different places for further machining. Brasses are often used as work pieces in the metal working industry. Those brass objects are machined by machine tools. Finished bronze items are just like any other metal objects in the metal working sector. They need to be polished and sometimes buffed. For industrial insiders in the metal working industry, the term metal polishing machine is sometimes referred to as the buffing machine or metal buffing devices as well.
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