Casting technology is the four heavenly king in metals and alloys so understanding to guide in this industry is extremely urgent. According to current trends, casting has many useful life. Casting role for the development of the economy. But in our country has not been paid much attention to its role. For example, the benefits from the production of replacement parts - products in the industry supporting role in everyday life. In addition, some manufacturers do not understand the differences of detail are made from castings and other methods. The result is a lack of opportunity for manufacturers. Foundry is well developed and widely in the industry. Castings average volume accounts for 40% to 80% of the total amount of machinery in mechanical engineering. One of the largest applications is the car manufacturing industry is about 30%. Other sectors include construction, mining and oil and gas accounted for 6%, pipe and fittings 15%, pneumatic pumps and 2%, 3% urban, rail accounted for 6%, agricultural machinery now 6%, 5% valve, motor Dott 5%. Moreover, the investment in developing new technology will reduce the burden of environmental pollution - a problem that is a global concern.
Flow pattern casting technology is currently being used in many countries around the world. The molded product line technology for the sample to flow more and more high quality and product damage rate low. So the flow is cast in molds new method many advantages over molding sand. Casting molds may melt the intricate details, with the thin-high surface quality, a significant reduction in the machining, casting more finished can use immediately. Casting flow patterns can be products weighing from a few grams to several tons.