The concept of green machine tools has been deeply rooted in recent years, but have you heard of the blue factory? Obviously, these two concepts are all under the corporate sustainability concept, and many companies are actively responding to this challenge. It is reported that Volkswagen has linked all its activities to ecological sustainable development under the slogan of “Bluemaginationâ€. The core philosophy is: saving resources, reducing emissions, extending recycling, and fostering employee engagement. The person in charge of the public once said that this is a new idea and can be used for all brands of the company. It is a resource-saving production method developed along the process chain. But what does the blue factory look like? The reporter found that the core of the project is to substantially reduce the emission of key pollutants. Another specification for the blue factory is the requirement for air quality. Let's go back and talk about green machine tools. After all, for the machine tool industry, there is no support for green machine tools, and the distance between blue factories will be farther. The core concept that reflects the role of “green machine tools†is to reduce energy consumption. According to statistics, in the process of cutting parts, only about 25% of the energy consumed is used for metal cutting. This part is useful work. Other energy sources are consumed in maintaining machine operation, ensuring accuracy and rigidity. In terms of auxiliary measures, energy conservation is to reduce this part of the energy consumption, with the least energy consumption to meet the needs of auxiliary functions. Professor Zhang Wei of Tongji University believes that the development trend of CNC machine tools is not only the improvement of machine tool performance, but also the greening of machine tools. The green eco-machine tools are characterized by light weight, low energy consumption, low waste emissions during use, recycling materials, and recycling after scrapping. However, the reporter believes that people will act after they know each other and think about the direction of behavior. Then, to make the greening of machine tools fundamentally reflect environmental awareness in every industrial link. In short, the change of ideas can change the environment. This is the most important. The reporter participated in the International Machine Tool Exhibition organized by China Machine Tool Corporation. In a forum, Mr. Yan Dehua, President of Asia, Haas Automation Company, also talked about the concept change and energy conservation and environmental protection. He said that he has been working in Haas for a long time, and many places can prove that Haas has been consciously doing this in the field of environmental protection. For example, before 2000, the coatings used by Haas machine tools were already water-based paints. This is because water-based paints have minimal environmental pollution during coating, equipment use, and equipment recycling. Although the machine tool manufacturing industry did not have corresponding laws and regulations at the time to strictly control this. He also told reporters that many companies use soft steel to add a certain proportion of lead inside, which will improve the machinability of steel and improve the surface finish. However, Haas's factory does not use lead-containing mild steel. On the one hand, the lead-containing steel in the process has certain damage to the operator; on the other hand, the lead-containing steel in the recycling process of the waste material. There is also some pollution to the environment. This is only from the perspective of raw materials. In fact, in other aspects, as long as you are willing to pay attention, you can contribute to environmental protection. The first is the design process. If you can get rid of the traditional design pattern, you can save a lot of manufacturing costs and achieve unexpected results. For example, if you use a part, it takes 5 hours to manufacture it, and another method can be used. It takes 3-4 hours to see whether the engineer has special intentions in manufacturing. If you are thinking about making a machine tool, the water, electricity, manpower and environmental pollution will be reduced. In fact, in the traditional mode, finding a new breakthrough is also a method, such as improving the machining efficiency without improving the rotation speed of the machining spindle by modifying the CNC machine controller or eliminating certain machining constraints, thereby achieving high efficiency. The purpose of energy saving. Therefore, in addition to consciously reducing the pollution to the environment during manufacturing, in the process of processing, if you can concentrate on researching a good process, efficient machining itself is an energy saving; similarly, if the whole process can be better Planning, in order to improve the precision rate, reduce misplaced waste products, can save materials, do not waste energy, and thus achieve the purpose of environmental protection. The reporter noticed that most of the machine tools use lubricating oil on the main shaft, the lead screw and the linear guide. The lubricating oil control system will supply oil to these system areas at regular intervals. However, the problem that comes with it is that regardless of the length of the actual movement of the guide rail, the system will supply oil regularly, which will inevitably result in a lot of lubricant waste. Simply estimate that if you fill 3 ml every half hour, the machine will process 12 hours a day, 300 days a year, then you need to use 18 liters of oil a year. Imagine that if you do not supply oil at intervals, but supply oil according to the actual running distance of the guide rail, it will greatly reduce the loss of oil. Of course, in this case, it is necessary to carry out the transformation on the original model. It is necessary to equip the machine with a new system, which will inevitably increase the cost of the enterprise. But this choice reflects the culture of the company. Although some initiatives will increase the cost of the product, if these increases in manufacturing costs are due to contributions to social and environmental protection, I believe that many companies willing to take this decision. It is imperative that according to incomplete statistics, China's existing machine tool holdings are around 8 million units, making it the world's largest machine tool. Among them, more than 2 million traditional old machine tools have been in service for more than 10 years, and have entered the peak period of mechanical equipment scrapping. If you let these old machine tools rust and fester, it is not only a waste of resources, but also a great threat to the environment. In the “12th Five-Year†development plan of the machine tool industry, green manufacturing projects including remanufacturing have been included in the main scope of work. In fact, from the point of view of resource and enterprise cost control, the machine tool industry itself has a strong expectation for remanufacturing. The upstream steel industry in the machine tool industry, due to iron ore, coke and other raw materials for steelmaking are non-renewable nature. Resources, and the iron ore required by China's major steel mills depends on the three major mining giants abroad. In recent years, it has been subject to rising iron ore prices, high steel prices, and high cost of downstream machine tool companies. Remanufacturing is beneficial to the environment as well as to the reduction of the cost of the enterprise. Machine tool remanufacturing is a kind of green manufacturing. Compared with new products, it can save 60% energy, 70% material saving, 50% cost saving, almost no solid waste, and air pollutant emissions reduced by more than 80%. In addition, re-manufacturing a circular economy model that is conducive to the formation of resources - products - waste products - remanufactured products, can make full use of resources and protect the ecological environment. In addition, the social retention of machine tools in China is growing rapidly, and the potential for remanufacturing industry is huge. A large amount of equipment will be eliminated after reaching the scrapping requirements, and new decommissioning equipment is still increasing. At present, many universities and research institutions in China have carried out research in the field of green manufacturing and have achieved certain results. For example, Chongqing Machine Tool Group and Chongqing University have jointly developed a complete set of machine tool remanufacturing and comprehensive lifting technology, and completed the remanufacturing of more than 500 used machine tools. The functions and main technical indicators of remanufacturing machine tools meet or exceed the original machine tools, resource recycling. The utilization rate is about 80%, the noise is reduced by more than 10%, and the environmental pollution discharge is reduced by more than 90%. In addition, the electrostatic mist absorbing device developed by Qinchuan Machine Tool has greatly improved the treatment effect of oil mist compared with the traditional filter device, the efficiency is over 96%, the discharged air is basically clean, and the recovered oil mist The particles are recycled repeatedly. Li Jingming, deputy secretary-general of the China Machine Tool Industry Association, said in an interview that traditional thinking and production methods are undergoing profound changes, and a green industry revolution is emerging in the machine tool industry. He said that at present, China's machine tool industry is achieving green manufacturing through four technical measures: low carbon through technological innovation; low carbon through innovative processing; low carbon reduction through innovative structures; and recycling and self-lubricating materials. Low emissions, etc.
However, the reporter believes that, like other industrial products, the green design of the machine tool must take into account the production cost, running cost, maintenance cost and environmental cost of the product, find out the optimal design, and only gain a market recognition in a certain direction. In this respect, the machine tool factory needs to continuously develop new technologies and improve existing products. At the same time, customers need to have a deep understanding of machine tool products, and comprehensively compare the performance and characteristics of the products, instead of blindly comparing prices.
However, the reporter believes that, like other industrial products, the green design of the machine tool must take into account the production cost, running cost, maintenance cost and environmental cost of the product, find out the optimal design, and only gain a market recognition in a certain direction. In this respect, the machine tool factory needs to continuously develop new technologies and improve existing products. At the same time, customers need to have a deep understanding of machine tool products, and comprehensively compare the performance and characteristics of the products, instead of blindly comparing prices.
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