Discussion on Application of Advanced Manufacturing Technology in Power Generation Equipment Manufacturing

March 29, 2023

2 Abstract Based on the development trend of advanced manufacturing technology, this paper discusses its application and countermeasures in China's power generation equipment manufacturing industry. It points out that using advanced manufacturing technology and advanced manufacturing mode to transform China's traditional power generation equipment manufacturing industry is the only way to future development. .
1 Introduction Today, in the world, the competition in manufacturing industry has become more and more fierce, the manufacturing cycle of products has become shorter and shorter, and the competition based on time personalized quality and price has become an important strategy for enterprises to occupy the market. The power generation equipment manufacturing industry is no exception. If the advanced manufacturing technology AMT is not actively adopted to improve the competitiveness of enterprises, it will be in a difficult position in the fierce competition. This competitive ability of the enterprise can be enhanced by comprehensively applying advanced manufacturing technology to comprehensively improve the level of flexible automation of the enterprise. AMT refers to the equipment computer hardware and software and management method that can significantly improve the ability of design, processing, inspection, material storage, transportation, marketing, production management, etc. under the current technical conditions. It mainly includes computer network manufacturing flexible manufacturing system FMS computer integrated manufacturing system 05 intelligent Manufacturing system 13 sophisticated manufacturing system, 3 agile manufacturing system 13 virtual manufacturing system VMS and other manufacturing technology and manufacturing system; flexible manufacturing unit FMC robot machining center MC numerical control machine NC laser processing automatic testing equipment automated warehouse and other factory self-reporting time 2001 August 20th, such as hardware facilities; material demand planning river 3 manufacturing resource planning rule, just-in-time production planning, 1 computer-aided design and analysis, CAE computer-aided manufacturing CAM expert system and management information system MIS and other software tools.
2 China's power generation equipment manufacturing technology status China's power generation equipment manufacturing industry was mainly built by the former Soviet Union in the 1950s. It is now in an important historical period and faces tremendous pressure from both home and abroad.
On the other hand, due to the low level of power supply and demand balance in China, the market demand for power generation equipment is insufficient. On the other hand, with the gradual deepening of reform and opening up and the internationalization of the domestic market, China's power generation equipment manufacturing industry must not only face domestic counterparts. The fierce competition, but also directly face the challenges of the coexistence of large international companies. This is a severe test for China's power generation equipment manufacturing industry, which has a low level of manufacturing and competitiveness. Whether it is the product's market competitiveness, design and development capabilities, or its quality level, cost level, and market responsiveness, etc. China's power generation equipment manufacturing industry has some shortcomings. The main products are relatively single, new products, long cycle, and weak self-development capability. In the 1980s, major domestic power generation equipment manufacturers began to use 00ç–‹ to design and analyze the main components of power generation equipment, developed some special design software, and obtained batch results. At the same time, they introduced foreign CADCAMCAEDMPDM product data management through research and technology. Commercial software has reached the world's advanced level in some respects, but the systemization and integration procedures are low, and the role of advanced manufacturing technology is not fully utilized.
Some of the production equipment of power generation equipment manufacturers are relatively old, and the overall level of automation is low. Since the late 1980s, major domestic power generation equipment manufacturers have successively introduced advanced foreign manufacturing equipment. For example, Dongfang Electric Machinery Co., Ltd. and Harbin Electric Machinery Factory have introduced large-scale numerical control equipment including shaft linkage, and adopted modern The numerical control technology carries out numerical control transformation on the batch machine tool, and the automation degree of the equipment is greatly improved.
The manufacturing process is relatively backward and the production cost is high. Since the mid-1990s, China has done a lot of work in the development and application of CAM, especially the CAMCNC research and development of key components of complex parts of power generation equipment, and some aspects have reached the world advanced level. The implementation of 0 is now being promoted, but the power generation equipment manufacturing technology is less systematic and integrated.
Management methods such as planning and scheduling of production are relatively backward. In recent years, in order to accelerate market responsiveness, new generation production management techniques such as material demand planning manufacturing resource planning and enterprise resource planning have begun to receive attention.
From the current situation of China's power generation equipment manufacturing industry, we have widely used 0 technology, can analyze and calculate the key components using 0, equipped with various numerical control equipment and machining centers, CAMCNC and CAPP technology can be gradually promoted. Although there is a big gap between the advanced manufacturing technology application and the advanced manufacturing mode and the advanced level of foreign countries, it has already set conditions in terms of software and hardware facilities, adopting advanced manufacturing technology and manufacturing mode for progress, and accelerating the transformation of traditional power generation equipment manufacturing. The industry has laid the technical and material foundation.
Application Analysis of 3AMT in Power Generation Equipment Manufacturing The application of AMT in power generation equipment manufacturing can be introduced throughout the enterprise product design, development, production management.
3.1 Application in the design and development of power generation equipment products In the 1980s, major domestic power generation equipment manufacturers began to adopt, and the design analysis of the main components of power generation equipment has been widely carried out at different levels. It is widely used in the power generation equipment manufacturing industry, such as the research and development of the hydraulic model of the turbine as the core of the turbine. It has been fully applied to the computer aided design of the blade. 0, the finite element calculation analysis and performance prediction of the flow field 0, Ding CNC machining, river and other advanced Technology; as in the design and analysis of the shafting system of the steam turbine generator unit, the CADCAE and other technologies have been fully used for design assembly and dynamic response calculation. In some products, the initial application of computer integrated manufacturing technology has achieved significant benefits.
If we improve the application of advanced manufacturing technologies including virtual manufacturing, 4 concurrent engineering 0, and especially the newly proposed virtual product development technology to China's power generation equipment manufacturing industry, it will help to get rid of product design and development cycle and long-term independent development capability. The weak situation is of great significance for realizing the product development policy of production generation and generation generation. In the power generation equipment manufacturing industry, advanced technologies that can be developed and applied include computer integrated manufacturing technology. CIM refers to the implementation of computer-aided design in all products, and the realization of entity modeling feature modeling, parameterized design constraint management and correlation design. A variety of functions, including 3. dimensional modeling of product parts, to achieve dimensional design of the product.
b. Based on PDM data volume sharing and product configuration management, the borrowing rate of mature parts is mentioned.
The use of virtual product development tools 0,0 refers to the digital product on the computer to complete the entire product development process including product design analysis experiments and testing, so that we can be on the product before the actual prototype is manufactured The evaluation of the aspect reduces the dependence on the physical model and accelerates the development process. It includes a. Using PDM to manage power generation equipment product data.
The finite element analysis and optimization of various key components of power generation equipment are carried out, and the structure of the parts is optimized according to the stress and strain conditions, so that the structure is more reasonable, and the purpose of reducing the production cost and improving the product quality is achieved.
c assemblability analysis and virtual assembly of various products. That is, according to the part model provided by PDM, the virtual assembly of the product parts and the whole machine is realized, the matching tolerance of each part is reasonably determined, and the assembly evaluation is performed, and the model is provided for the kinematics dynamic analysis.
1 The rotor dynamics analysis of the kinematics of the key mechanism of the turbine governing mechanism of the turbine runner. That is to say, the virtual assembly model is used for kinematics analysis, and the dynamic analysis of vibration modes is used to provide an effective means for improving the design.
e. Product process management based on PDM. That is to establish a product development process model, using message pre-release version management authority approval, etc., to achieve dynamic tracking and real-time monitoring of the design development process, to achieve collaborative work, accelerate product development virtual product visualization. That is to use the virtual assembly model for product visualization and industrial design color design, etc., can lay the foundation for network manufacturing through INTERNET.
The reverse engineering scales 6,6 are called 1 and have many curved parts in the power generation equipment, such as turbine blade sculpture curved turbine blade curved surface turbine guide vane surface, etc. These parts are related to their hydrodynamic characteristics. In the development process, it is necessary to verify the design and modify the surface model through experiments, and the reverse engineering can speed up the development process.
Parallel engineering, the domestic power generation equipment manufacturing plant still mainly uses serial engineering in the development, design and manufacture of products, and there are long-term design and manufacturing disjointed products. After the parallel engineering, the products work in parallel from development to production. In the development stage, the economics of the manufacturability of the parts must be considered, which not only greatly shortens the product manufacturing cycle, but also reduces the cost.
3.2 Application in product manufacturing process and process technology In the 1990s, domestic major power generation equipment manufacturers began to use CNC machining technology to process major components, and research and development in complex and typical parts processing, and developed large-scale turbines. The shaft machining of the blade is numerically controlled. The steam turbine blade is manufactured by the steam turbine cylinder. The CNC machining technology is applied to the power generation equipment manufacturing industry at different levels.
Aiming at the characteristics of power generation equipment manufacturing, it is of great significance to promote and apply advanced manufacturing technologies such as FMSCIMSVM to improve the production process of China's power generation equipment manufacturing level. The advanced manufacturing technologies that can be applied include computer-aided manufacturing CAM and simulation processing technology using CNC machine tool CNC machining center with river technology, which can realize the automation of part or all of the machining process of the parts; the product dimension model can be used in 014 and The simulation software defines and simulates the machine tool, simulates the machining process system such as the machining tool fixture, formulates the process route and the process content of the part, and calculates the tool interference calculation of the tool position trajectory calculation tool position, and performs the post-processing numerical control machining program for the machine tool processing. Using the process simulation software to simulate the motion and state of the machining object in the machining process on the computer, perform collision processing interference caused by factors such as virtual machining, inspection, code and clamping, optimize the machining plan and processing technology; have animation function.
The blades are CNC-machined on the machine.
The computer-aided process design plan, through the transmission of the parts and components information of each power generation equipment, through 7, establish the process resource library of each enterprise, input the processing technology information of the processed parts to the computer, and automatically output the process route and process content of the parts by the computer. Including blank selection and blank generation and positioning fixture processing method processing sequence process equipment selection, etc., can optimize the processing technology, adjust the equipment load reasonably, and greatly reduce the process preparation cycle.
The flexible manufacturing system promotes FMS technology and is based on a machining center, including a machining center's three-dimensional warehouse material transportation system and control system. FMS can achieve flexible processing, which is conducive to single-piece processing and small-volume production of power generation equipment, and enhances the agility of market response.
Special processing and emerging manufacturing technologies such as rapid prototyping technology and other special processing techniques applied to turbine model manufacturing can greatly shorten the trial cycle.
Dimensional measurement and large-scale measurement technology There are many large-scale curved parts in the power generation equipment that need to be measured by dimensional coordinates. There are also many large parts that need to be dimensioned. Computer-assisted non-contact photoelectric measurement technology combined with reverse engineering can be solved very well. .
3.3 Application in production management and operation management In general, the production management level of China's power generation equipment manufacturing industry is still very low. According to the advanced manufacturing technology of the same industry in foreign countries, it is responsible for the production of China's power generation equipment manufacturing industry. It is of great significance to achieve good economic benefits in management and management. The advanced technologies that can be applied include decision support system 035 decision support system, 6.53 port 0, 3, 5, which is an important tool for realizing scientific decision-making of enterprise management. The group intelligent decision support system based on 1 plus Han is based on 030 boundary The support of the group decision support system and the advanced means of the multi-organization decision support system can help enterprises correctly formulate production and operation strategic plans and marketing strategies, and win market competition.
Enterprise resource planning scale The new generation of production management technology has developed rapidly. ERP has surpassed MRP in terms of function and technology. From the perspective of enterprise-wide system, the customer-centered enterprise resource plan for the whole enterprise activity can effectively Integrate and manage the information on the supply and marketing of people and property inside and outside the enterprise, and strongly support enterprises to implement advanced manufacturing models.
Reconstruction of business process 3 illusion From the perspective of global optimization, using the business process to reconstruct 3 illusion key technologies such as basic research modeling and simulation technology workflow system technology, etc., can carry out the technical organization structure and culture of enterprise personnel management process Reconstruction to improve the economic efficiency of enterprises.
Production-centered virtual manufacturing, 4 With the globalization of power generation equipment manufacturing and the strengthening of cooperation among enterprises in various countries, the production-centered virtual manufacturing VM technology can easily and quickly evaluate production plans, test processes and resources. Conditions, etc., to optimize the manufacturing environment configuration and production supply plan.
Agile manufacturing, with the international leading level of 0 companies to adopt enterprises, the implementation of inter-enterprise integration and high manufacturing flexibility and rapid manufacturing and the optimal use of human resources. Inter-enterprise joint integration makes full use of the strengths of each enterprise, targets the requirements of the market, and cooperates to complete the task. After the completion of the task, the company will be dismantled and then organize new cooperation according to the needs.
4Proposals and countermeasures for promoting and implementing AMT 4.1 The process of implementing and promoting Heding may be too long. Not all available information resources are used for decision-making. Financial evaluation of investment is not sufficient. Department staff participate in the discussion of the company attaches importance to technical training and pays insufficient attention to the training of production management. 4.2 Initial countermeasures and factors that need attention. Seriously implement the pre-arrangement of AMT implementation. AMT needs training in software hardware support system. Huge capital investment. Because of the huge investment involved, and its implementation will affect all aspects of the company's personnel technology and operations, the implementation of a certain Ding's preliminary argument must be very detailed. If the equipment software has been purchased, the factory has been built and put into use before it is discovered. It is quite difficult to re-adjust it. 4 Ding must conform to the overall corporate strategy, including business strategy marketing strategy technology strategy and manufacturing strategy.
Pay attention to the main influencing factors of the implementation of Heding 3. Influencing factors of the management of the enterprise 1 The degree of the corporate strategy to be implemented The enterprise has a clearly defined degree of achievement of the target management and support. The need for long-term automation by enterprises f+ the position of the top management of the company's supporters for the desire to make long-term benefits in short-term ventures. Financial support level implementation group structure and member influencing factors a. Implementation group members' familiarity with AMT The structure of the implementation group and the membership transfer group member transfer degree The internal employee influence factors The employees are educated before the implementation of AMT. The training has been carried out after the implementation of Ding. The AMT implementation process is influencing factors. 3. Top-down planning within the enterprise and the bottom-up enterprise's experience gained through the trials prior to the implementation of the enterprise restructuring requirements 1. Ding implementation In addition, the external conditions of the steps must be educated before the implementation of the company, from the leadership to the general staff, so that they can understand the technical characteristics of the implementation and the benefits that can be brought to the enterprise. Demonstrate the efficiency of selected personnel, and pay attention to the scientific management of localization.
5 Conclusions The competition faced by China's power generation equipment manufacturing industry has become increasingly fierce. Innovation has become the focus of corporate competition strategy. New production models are paying more and more attention to knowledge. It is a top priority to adopt advanced manufacturing technologies to transform this traditional industry. However, in the power generation equipment manufacturing industry in China, the application of advanced manufacturing technology and the development of advanced production models must be based on the national conditions, on the basis of tracking and digesting foreign advanced production models, to develop the advanced production mode of China's power generation equipment manufacturing industry, and promote modern advanced manufacturing technology.
1 Li Minxian. Advanced manufacturing technology for the 21st century. The mechanical industry automatically 2 weeks Zude. Rapid manufacturing and virtual manufacturing. China Mechanical Engineering, 1999, 3 Yan Qiqi and so on. Theoretical and technical basic research on virtual manufacturing. Zhongji 4 Lai Xide, Wang Yukai. Computer maintenance and simulation processing of large turbine blades. Proceedings of the First Annual Academic Conference of China Association for Science and Technology, Beijing China Science and Technology Press. 1998 5 Zhu Heng et al. Virtual manufacturing system modeling and simulation. China Mechanical Engineering, 6 Wang Anmin, Wen Xiaoxia. When the manufacturing enterprise's production mode is reorganized and the system is connected, the temperature rise of the end structural members is lower, and the highest temperature rise is 57.3 and 48.0 respectively, so the temperature rise of the end structural parts is It will not become a factor limiting the phase-in operation of our company's 300 turbine generators.
1 Ding Hao years. The heating and cooling of the Daxie motor. Science Press 2 Chen Yu and so on. Theory and calculation of electromagnetic field of motor. Science Press 3 selected motor electromagnetic field numerical calculation program. Chinese Electrical Engineering Society. Beijing Science Press 4 Fu Zi, and so on. Research on stator end heating and copper shielding of large steam turbine generators. Dongfang Electric 5 Fei Renyan and so on. Finite element analysis of the magnetic field of the stator end of a turbogenerator and the influence of various factors. Journal of Tsinghua University
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