The Research On The Manufacturing Of Evaporative Pattern For Digital Manufacturing

EPC(Expendable Pattern Casting) is a one-time molding casting new technology and casting method to produce castings.Expendable Pattern is made by foam(EPS, STMMA or EPMMA) polymer materials and which exactly has the same shape and size and structure with the casting parts to be produced.First, Expendable Pattern was Dip refractory coating before drying and buried in the dry quartz sand,second, modeled by three-dimensional vibration in casting molding box,third,pouring molten metal into the liquid under negative pressure so that the appearance of polymer materials heated and gasified and disappear,final,EP was replaced by the liquid metal then cooling and solidification.[1] The main production process through production process preparation, three axis nc machine tool for processing, after parts of adhesive, surface treatment, inspection process, finally complete the qualified products. This topic covers the foam products pieces of production equipment manufacturing, intelligent system is built, materials research and development, technology, process optimization, quality control, comprehensive broke the limitations of traditional wooden single casting, is the first successful revolution of new mould development. The topics will be foam business, material preparation, process design, production planning, production quality management, quantitative management, effective use of VM, IM, TDM platform and integration of information, the green casting, lean production, such as new ideas, for the efficiency multiplier, transformation and upgrading of management goals laid a solid foundation.1. There is no national control standards and requirements for EPC appearance manufacture of raw materials, raw materials.Manufacturing and control uneven, raw materials put into use before the test and the basis is not clearly defined, after the implementation of this project, the EPC proposed template material advantages, disadvantages, specifically the disappearance of EPC control elements and key parameters required to develop detection tools and approaches that can be performed for the EPC industry can provide reference material standards, standardized molding sheet metal factory technical standards, the plant material checks provided technical support for the main parameters of density, gas evolution, tensile, compression and other performance parameter index requirements for EPC castings to enhance the overall quality of products laid the foundation.2. EPC appearance at the manufacturing sector, to subvert the usual domestic manufacturing mode, the formation of a new type of digital manufacturing solutions. Through the whole process of virtual manufacturing design, form a set of environmental protection, green manufacturing processes under the application of advanced intelligent devices and digital management. Wherein modeling EPC appearance design, block, layout, CNC programming, disappeared on special materials, tools mold development, automation pumping on subsequent dust have formed a complete technical specifications and field operations work instructions, leading the industry overall progress and high standards of manufacturing requirements.3. Integrated Digital Enterprise software integration, ERP \ DNC \ TIDE BOX \ TC and other software, making all aspects of the manufacturing process parameters to achieve control. Achieve a person to operate 6 machine tools,reduce human resources significantly demand, product quality is guaranteed. Realization of the digital technology and manufacturing technology mutual integration, completed the virtual reality, to establish a database of each function, virtual simulation of various production processes before completion of the digital design center and digital control center and digital manufacturing system, improve their market competitiveness force and to ensure competitive advantage.