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Precision electronic copper plate fast exhaust muffler belt project is to solve the problem of replacing imported products with low grade and technical content in domestic copper plate and strip industry. This project is oriented by the demand of high-tech industry for high-precision copper strip, which is applied to integrated circuit, communication, electronics, automobile and other industries. 6061 is a kind of special material used for automobile wheel and shell. At present, several large domestic factories can produce it, and the product supply is tight. Our products have high technical content, strict requirements, only equipment conditions, lack of relevant technology. Now our company has a small pulp leaf dryer oxygen muffler, has been small batch production, used in food, chemical and other industries. However, for the treatment capacity (such as sludge) and heat transfer area of 200m2 required by users, there is no manufacturer to produce at present. However, the current paddle dryer has an old structure and large energy consumption. This kind of parts are made of ductile iron, and the material is qt400-17, which requires limited elongation and yield strength. The tensile strength of the company can meet the requirements of the company's tensile strength, but it can not meet the requirements of elongation and yield strength at the same time. All indicators require sampling on the casting body, so it is difficult to meet the requirements.