Green design and manufacturing in the hottest cast

Green design and manufacturing in Foundry Engineering

Abstract: using the concepts of green design and green manufacturing, this paper discusses the advanced design ideas and modern manufacturing concepts in the foundry industry, and discusses the indifferent production mode and sustainable development ideas in the green foundry industry

key words: Casting; Green design; Green manufacturing; Qinghao production

greendesign (GD) is a new design concept, an effective integration of design methods and design tools, and one of the most effective ways and methods to "green" products from the source. Greenmanufacturing (GM) is the embodiment of the sustainable development strategy of human society in modern manufacturing industry. Green design and green manufacturing technology are not only applied to regulate various human production behaviors and labor protection methods, but also introduced into higher-level fields such as economic development, social management and decision-making. The development of green design and green manufacturing technology is the embodiment of human civilization and progress. The embodiment in the foundry industry is to implement green foundry engineering, and strive to realize that all links of foundry products from design, production, use to recycling and waste disposal meet specific environmental protection requirements, coordinate with the environment, and maximize the use of resources and energy conservation. At the same time, by increasing scientific and technological investment, capital investment and careful management, we can obtain the maximum output and benefits on the basis of full utilization and maintenance of resources. At present, the proportion of green casting products is about 5% - 10%; In another 10 years, all foundry products will enter the green design family. In other words, green design and green manufacturing will become one of the production behavior norms of the foundry industry

1 architecture of green design in foundry industry

green design is usually also known as ecological design (ED), design for environmental (DFE), lifecycle design (LCD) or environmental conscious design (ECD), etc. Figure 1 is the architecture block diagram of green design in the foundry industry [1]

Figure 1 architecture of green design

this architecture will integrate the architecture of green design and establish a modern casting production mode that comprehensively considers environmental impact and resource and energy utilization efficiency. Under this production mode, casting products are produced, processed, transported, used, and scrapped with more than 5000 molds in the whole product life cycle from design and production, Must have the least impact and negative effect on the environment, the highest utilization efficiency of resources and energy, and improve economic and social benefits at the same time (Figure 2). It can be achieved through the specific implementation of green design in the foundry industry (Figure 3)

Figure 2 logistics system with multiple life cycles of casting products

Figure 3 specific implementation contents of green design in the casting industry

green design is to focus on the environmental attributes of products (detachability, recyclability, maintainability, reusability, etc.) throughout the life cycle of products, and take them as the design objectives. While meeting the environmental objectives and bringing the best technology and best practice to cr929 objectives, Ensure the function, service life and quality of the product. Green design takes the green degree of products as the design goal in the whole life cycle of products. In the design process, full consideration is given to the various impacts of products on the environment in the acquisition of raw materials, production and manufacturing, transportation and sales, use and recycling. Figure 4 shows the closed-loop system of the product life cycle

Figure 4 closed loop system of product life cycle

2 green manufacturing architecture in the foundry industry

Green Manufacturing GM, also known as environmental conscious manufacturing (ECM), manufacturing for environment (MFE), etc. Green manufacturing is a modern manufacturing mode that comprehensively considers environmental impact and resource efficiency. Its goal is to minimize the impact (negative effect) on the environment and maximize resource efficiency in the whole product life cycle from design, manufacturing, packaging, transportation, use to scrap disposal (Figure 5). Green manufacturing field includes three parts: (1) manufacturing field, including the whole process of product life cycle; (2) Environmental field; (3) Resource areas. Green manufacturing is the intersection and integration of these three fields, as shown in Figure 6

Figure 5 product life cycle in green manufacturing

Figure 6 green manufacturing integration

3 green casting production -- cleaner production

the United Nations Environment Programme defines cleaner production as: cleaner production refers to the continuous application of comprehensive prevention environmental strategies to production processes and products, in order to reduce risks to human beings and the environment. In the green casting system engineering, cleaner production is the yield, which directly reduces the cost; Reduce or 9 can also be used as a mandrel. On August 18, the spot market of steel raw materials was weak and wait-and-see, eliminating environmental pollution. In the design and production process of casting products, the requirements of optimal utilization of resources and environmental protection are considered, so that the designed casting products consume the least resources, use the least energy, and cause the least pollution to the environment in the production and use process, and the castings are easy to be recycled and reused after scrapping. Relevant environmental protection statistics show that the raw materials consumed by the final products used for social needs are less than half of the total raw materials, while more than a bucket of raw materials are converted into waste and discharged into the environment. Therefore, environmental pollution and waste of resources are symbiotic. Only paying attention to the waste treatment at the end of production is not only a waste of resources, but also far from fundamentally solving the environmental problems caused by industrial pollution. Cleaner production, through the two technologies of "source reduction" and "material recycling and reuse", can obtain the maximum economic development benefits with the smallest environmental cost and the least energy and resource consumption. Cleaner production, the core of green casting engineering system, is to treat the widespread waste of resources and environmental pollution in the casting industry from the source, and fundamentally solve them through recycling and waste utilization. Figure 7 shows the composition of cleaner production system in green casting

Figure 7 cleaner production system in green casting

4 sustainable development idea of green casting industry

The Research Report "our common future" submitted by the United Nations World Commission on environment and development (WCED) to the 42nd General Assembly of the United Nations officially gives the mainstream definition of "sustainable development": "sustainable development is the development that meets the needs of contemporary people and does not endanger the ability of future generations to meet their needs", Its connotation is very rich. It links the ecological environment and economic development into an organic whole with mutual cause and effect, and believes that economic development should take into account the long-term carrying capacity of the natural ecological environment, so that resources and environment can not only meet the needs of economic development, but also directly meet the needs of human long-term survival as one of the elements of human survival, thus forming a comprehensive development strategy [7]. The sustainable development mode of foundry industry in the 21st century is to implement green foundry engineering and establish a high-quality, efficient, low consumption, clean, flexible and agile foundry system. Based on the requirements of optimal allocation and effective utilization of resources and environmental protection, renewable resources should be used to the greatest extent, and the whole process from product design, production of raw and auxiliary materials to product production and sales should be optimized and controlled by advanced technology and equipment and scientific management means to produce comprehensive high-quality products (products with energy conservation and consumption reduction in manufacturing, low pollution, complete reliability in use, long service life and stable performance), Moreover, the amount of emissions produced in the production process is small, pollution-free, non-toxic, and recycled to the greatest extent, close to zero emissions. These ideas closely combine economic development with environmental protection and efficient utilization of resources. They are effective ways and working conditions for the sustainable development of the foundry industry, improve the welfare treatment of employees, attract more talents to join the foundry industry, form a virtuous circle of the industry, promote the all-round development and progress of the entire foundry industry, and provide high-quality castings for the automotive, construction and electronic industries, Make due contributions to the development of the national economy

in the 21st century with sustainable development as the main melody, green design and green manufacturing are widely used in the foundry industry. The survival and development of the foundry industry depends on its level of environmental protection and resource utilization. With cleaner production as the core, advanced technology, equipment and modern management mode are adopted, and the comprehensive industrialization transformation of foundry enterprises is gradually carried out, Realize zero emission of casting waste and recycling of waste materials. On the basis of advanced information technology and manufacturing network technology, establish a wide area dynamic alliance of green casting enterprises in mature areas, further improve efficiency and efficiency, and become a real green industry

5 conclusion

to sum up, green design is an effective integration of design methods and design tools. Green manufacturing is a modern production and manufacturing mode of efficient utilization of environment and resources in the whole life cycle of products. When applied to casting, it is to realize the green casting project of green design and green manufacturing in the casting industry, design and produce all links from the design, production, use to recycling and waste disposal of casting products, so as to maximize the use of resources and save energy. Through the cleaner production mode, the overall environmental management is implemented for the whole casting production process. Green design and green manufacturing is a new concept and a new model for the development and operation of modern foundry industry. It plays an important role in the sustainable development of modern foundry industry

References:

[1] Liu ruisu, Guo Lanshen, Wang Yang Green design and green manufacturing are the development trend of foundry industry [j] Jiangsu machinery manufacturing and Hua, 2001, (4): 8

[2] Shi Jingyu, he Zhenming, Shi Hongyu Green casting binder animal protein binder [j] Automotive Technology and materials, 2000, (4): 22

[3] Zhang Yingjie, on green design of electronic products [j] Journal of Shaanxi Institute of technology, 1999, 16:40