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In the production- process chapter. First, make sure the overall flow of this design, the production processes necessary briefly, given the overall production process flow diagram. Secondly, according to the order in accordance with the production process, in turn production processes are introduced and design. It should be said, an extrusion process is the focus of this chapter, this section except for production equipment and technology are described in detail, but also by the parameters of the extrusion die head screw and a detailed selection and designed to meet the design requirements. Finally, select the screw head and die parameters to obtain the optimum operating point, provide the basis for equipment selection and choose the material balance section.
In the chapter on the material balance for conservation of mass, First, determine the basis of calculation of the mass balance, including the number of days of production, production time as well as various aspects of the loss rate. Second, each process yield losses and waste amount and calculation of the various processes and calculate the amount of production and consumption of raw materials, production process and the composition of the various stages of consumption and so on. Finally, the consumption of raw materials integrated table and plotted to give 3000t product material to flow chart, as well as equipment selection after calculations to do to prepare.
In the selection of equipment and calculation of a chapter, combined with the design of the production process as well as the optimum operating point, the reference standard plastic mechanical design refinement process steps required for each device type and other technical parameters and select the appropriate equipment for each process and gives each device-related parameters, such as type, power, and size, and the number of units each made their calculations, the detailed list of parameters and prices, the economy, paving the way for the balanced counted later.
In the energy -balance chapter. Firstly, through the energy-balance chart, make the necessary transfer process outlined in this energy. Secondly, with respect to each extrusion die head system and part energy calculation, in order to obtain the cooling water and chilled water usage. In the second chapter, according to the order of the production process, the equipment used in the production process one by one power calculation, and gives the total power loss. At the end of this chapter gives a comprehensive list of energy loss. The table can provide a basis for economic accounting.
In terms of energy content, the calculation by extrusion molding machine and the mold portion of the energy balance, through the heat of the calculated amount of cooling water, and by calculating the appropriate energy and chemical energy. The amount of this design in the understanding of product design, but also considered a lot of preparation work for the final economic balance
In the non-process plant design chapter, first understand the guidelines for plant layout, the general situation of the plant design, and then arranged a workshop equipment and the workshop drawing layout, in addition to plant personnel and the number of jobs a brief arrangement. It also considered the problem of workplace safety and environmental protection aspects of its water supply, drainage planning to do, and waste treatment are discussed.
And finally into the economic balance of the chapter on consumption of raw materials, equipment depreciation costs, packaging costs, utilities and staff salaries and taking into account other factors, the cost of this design was estimated and pricing of products, and the final market similar products were compared in order to determine the feasibility of the design or not.
目录
1绪论 10
1.1 文献综述 10
1.1.1 复合材料的发展