The demand for remanufacture of the hottest machin

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The huge demand for machine tool remanufacture promotes the new development of the industry

machine tool remanufacture is a strange and familiar hot phrase in the manufacturing industry. Remanufacture has been given high attention and expectation in today's difficult market adjustment process. It seems that remanufacturing should be developing vigorously, whether from the global call for emission reduction or the background of circular economy, green manufacturing and automation upgrading advocated by the Chinese government. However, what is the actual situation faced by machine tool remanufacturing enterprises

policies are guaranteed

from the perspective of government attention: in recent years, remanufacture has been continuously supported by national policies, and the national circular economy promotion law has proposed to support enterprises to carry out remanufacture of motor vehicle parts, engineering machinery, machine tools and other products, and tire refurbishment will reach more than 150000 tons in 2019. In December, 2009, the Ministry of industry and information technology announced the first batch of pilot units for the remanufacture of mechanical and electrical products, including five pilot enterprises for the remanufacture of machine tools. In May, 2010, 11 departments including the national development and Reform Commission and the Ministry of science and technology listed machine tools as key areas to promote the development of remanufacturing industry. The relevant government departments hope to standardize the remanufacturing market by organizing the identification of remanufactured products, establishing an industry access system, formulating remanufacturing acceptance standards and issuing preferential tax policies, and encourage machine tool user units and machine tool remanufacturing specialized enterprises to cooperate with each other to jointly promote the development of the second remanufacture industrialization of machine tools

on August 12, 2014 and the end of November of the same year, the China Association of mechanical and electrical equipment maintenance and transformation technology and the strategic alliance for technological innovation in the machine tool remanufacture industry held meetings of alliance units in Chongqing and Chengdu, respectively, to sort out the work of machine tool remanufacture in the past two years, from the implementation of the technical guidelines for remanufacture of green manufacturing metal cutting machine tools to the implementation of the work of pilot units, and made a serious summary. In particular, the remanufacturing standard, namely the "guidelines for remanufacturing technology of green manufacturing metal cutting machine tools", has been approved as a national standard, which puts forward specific normative requirements for the production and implementation of remanufacturing enterprises

in recent years, China's new standard has been implemented very carefully. The official promulgation of this standard is enough to show that the country attaches importance to machine tool remanufacture

the market has potential

from the perspective of the market: according to incomplete statistics by the China Machinery Industry Federation and the China mechanical and electrical equipment maintenance and Transformation Technology Association, at present, China has more than 8million machine tools. If it is conservatively estimated that, based on the annual machine tool scrapping and elimination rate of 3%, more than 200000 machine tools will be scrapped, idle, technically or functionally eliminated every year, accounting for about half of China's annual output of new machine tools (400000 ~ 500000). During the 12th Five Year Plan period, there will be more than 1 million sets. Compared with 2015, the sales situation in 2016 was in a downward trend, but the trend was completely opposite. In 2015, the decline was deep month by month, and this year, the decline was narrowed month by month, indicating that the market situation is developing in a good direction: in recent years, under the guidance of the correct approach of adjusting the structure and promoting the transformation, industry enterprises have actively adjusted the product structure, improved the service level, and gradually shifted the service object from traditional manufacturing to automobile manufacturing In modern high-end manufacturing fields such as aerospace, precision molds, power generation equipment and electronic products, the sales revenue that has fallen sharply due to the reduction in the demand for traditional low-end standard cutting tools is being compensated for by the growth in the sales of high-end cutting tools serving the modern manufacturing industry. This is a very encouraging development trend

according to the exchange of foreign counterparts, the sales of imported cutting tools in 2016 also experienced a year-on-year decline in the first half to a steady decline in the second half, but the year-on-year decline returned to the same period last year from an average of about 5%

machine tools face various forms of scrap. These machine tools can be recycled and reused through remanufacture, thus forming a huge remanufacture market demand

judging from the current market situation, there are indeed many machine tools that need to be remanufactured. During the period of planned economy in the 20th century, China's large state-owned enterprises and special manufacturing fields imported a batch of high-precision and cutting-edge equipment from Switzerland, Germany and the United States, which is still a rare good equipment. Therefore, by replacing the worn parts of the transmission chain, replacing the CNC system and other Remanufacturing measures, it has very high remanufacturing value. Since the 2008 financial crisis, the manufacturing industry in Europe and the United States has been weak. A number of manufacturing enterprises have moved to China and Southeast Asia. In addition, some knowledgeable second-hand equipment manufacturers in China have come to Europe and the United States to buy these high-precision second-hand equipment, and the first thing after these second-hand production lines and second-hand equipment enter our country is to do remanufacture

however, there are some difficulties in remanufacturing such machine tools. The original value of the above equipment is more than 5million yuan/set, and its positioning accuracy can be less than 0.003mm. The positioning accuracy after more than 10 years of use can be basically maintained at about 0.005mm, which is higher than the accuracy of new machine tools currently produced in China. In particular, the maintenance of accuracy is also difficult for China's machine tool manufacturing enterprises to achieve. Therefore, although the remanufacturing value of this part of machine tools is very high, there are not many domestic enterprises that can carry out transformation and improve it well

remanufacture has prospects

in China, the original manufacturers are unwilling to participate in the remanufacture market. In 2014, relevant leaders of the green industry alliance tried to negotiate with a well-known machine tool manufacturing enterprise with a large volume production in China to recycle cka6150 series CNC lathes for remanufacture. Because this type of machine tool has the characteristics of standardization of components, uniformity of drawings and process standards, we can learn from the successful experience of internal combustion engine remanufacture. The manufacturing enterprise is very interested in the repurchase mode, but the manufacturer is only willing to repurchase the old machine tools by replacing the old machine tools with new ones, and the old machine tools are directly sold at a lower price and flow into the lower end market. The biggest benefit of this is to stimulate the sales of new machine tools, which is in line with the most basic and primitive business interests of machine tool manufacturers

however, this practice of machine tool plants is contrary to the concept of remanufacturing green energy conservation. We can understand the concerns of this manufacturer. After all, the management modes of manufacturing and remanufacturing are quite different. Enterprises are economic entities that maximize benefits. Especially for small and medium-sized machine tools, the cost of remanufacturing manufacturers is much higher than the manufacturing cost of the same product. Under the current policy environment, it is indeed impossible to find a reasonable business driving force

at present, machine tool remanufacturing in developed countries in Europe and the United States has become an important part of the remanufacturing industry, with a certain scale and market, forming a relatively perfect core logistics system. Remanufacturers recycle waste machine tools through various channels, evaluate the value, redesign, label them as remanufactured after manufacturing, and re-enter the market. So we should have enough confidence in the remanufacturing market

after 30 years of rapid economic development, especially the development of more than 10 years after 2000, China's economy is bound to shift from an extensive and high GDP business to a healthier, efficient, green and reasonable economic development model

in 2015, under this background, remanufacturing, as a supplement to the manufacturing industry, naturally cannot escape various opportunities and crises faced by the manufacturing industry because its service object is the manufacturing industry. The decline of the manufacturing industry will inevitably lead to the decline in the demand for machine tools. Because remanufactured machine tools cannot form batches, the purchase costs of spare parts, system procurement costs and repair costs cannot be compared with machine tool manufacturers, resulting in the cost of remanufactured machine tools is much higher than the original machine tools

therefore, simply repairing and refurbishing, especially small and medium-sized machine tools, without the support of strong supporting policies, even if the technical route of remanufacture can be followed, the commercial value of remanufacture is difficult to be accepted by the market, which is the biggest confusion in the remanufacture industry

explore new models

how to expand remanufacturing work, not only to ensure profitability, but also in line with the concept of green manufacturing and circular economy, is indeed a new topic. According to the experience of an insider, there is no shortcut, no unified model and standard, and no Jinshan. Remanufacturing is not mass production. Its business form is more in line with the personalized market demand, more in line with serving the emerging industrial structure, and easier to integrate into information transformation

with the transformation of manufacturing industry to innovative industrial structure, the manufacturing industry will change from cost advantage + large-scale to specialization + informatization + small batch. Especially with the rise of labor costs and customers' demand for small batches of products to reduce the amount, personalization and timeliness of driving gears, machine tools + loading and unloading manipulator + networking + logistics, that is, the development of industry 4.0 is a trend. The use of existing workshop equipment for technological transformation, the provision of point-to-point personalized technical services for enterprises, the gradual integration of informatization into the traditional production line, the organic combination of traditional manufacturing technology and modern information through system upgrading and logistics, is not only in line with the national conditions of frugality, but also in line with our remanufacturing production mode, providing a new space for our remanufacturing industry

remanufacturing requires more basic work than manufacturing, including digestion and understanding of old equipment, improving the performance of original equipment through remanufacture, and solving and replacing the problems caused by defective spare parts through new manufacturing processes, heat treatment processes, and numerical control application technologies. Through the understanding of the process technology of end products, new technologies and new processes are adopted to improve the efficiency of remanufacturing equipment, and finally achieve the purpose of green manufacturing and recycling

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