Remanufacturing of construction machinery is in progress

The vigorous construction of industrial civilization after the reform and opening up made China's economy continue to grow for 35 years, creating a miracle in the history of human economy. However, a series of issues such as the rapid degradation of the ecology and the severe environmental pollution caused by the predatory exploitation of natural resources and the random discharge of pollutants in the West have also emerged in the country. At present, 70% of air pollution comes from the manufacturing industry, and the development of the remanufacturing industry offers the possibility of reducing pollution.

Remanufacturing is the use of high-tech means to professionally repair or upgrade old and new mechanical and electrical products, restoring their quality and performance to new batch production projects. The quality and performance of its products are not inferior to the prototype new products, and some exceed the prototype new ones. The cost is only about 50% of the prototype new products, the energy saving is about 60%, the material saving is more than 70%, and the adverse impact on the environment is significantly reduced. In order to effectively promote the construction of a resource-saving and environment-friendly society. Remanufacturing is both an advanced manufacturing method and a green manufacturing method. By maximizing the value attached to the product, 'win-win' is achieved. While the remanufacturing industry is saving energy and protecting the environment, it also allows enterprises to create economic benefits. Users spend a small amount of money to buy quality products with the same characteristics as new products.

Remanufacturing, as a recyclable model, is of great significance to the construction machinery industry. In particular, the current market for construction machinery in China has reached more than 6 million units. Can we make full use of “remanufacturing” to better “digest” old equipment? The development of China's construction machinery is not an illusory mirage.

The potential for huge remanufactured 2015 production value will reach 50 billion. The remanufacturing industry has been developing in China for nearly 15 years. From the initial difficulties, all kinds of work is difficult to develop, and it has been widely recognized by the government agencies, industry sectors, and all walks of life. Strong support and usher in a broad market prospect. China has entered the peak period of scrapping of machinery and equipment and autos, and the development of remanufacturing industry is facing rare opportunities. According to calculations, more than 2 million traditional old machine tools with a service age of more than 10 years in China exceed 8 million units, 80% of the in-service machinery exceeds the warranty period, and 5 million vehicles are wasted. If 10% of them are remanufactured, the output value will exceed 100 billion yuan. Yuan has great potential.

At present, there are usually two kinds of remanufacturing of construction machinery in China. One is for the remanufacturing of parts and the other is for the remanufacturing of the mainframe. The remanufacturing of the construction machinery has formed a certain scale and pattern in the developed countries, and Its business has become an integral part.

Caterpillar, a global engineering machinery manufacturing giant, has been involved in remanufacturing for 40 years, and its established "closed-circuit recycling method" guarantees that more than 9,000 remanufactured products are shipped to more than 170 countries in the world every day, and customers purchase The company's remanufactured product price includes two parts, namely the price of the remanufactured product (usually 40%~50% lower than the new product price) and the old deposit. If the customer can return an old item of the same category, the old deposit can be returned. Through this trading model, Carter can not only reduce the purchase cost of returning old customers, but also ensure that the company has sufficient raw materials to remanufacture parts (otherwise those old parts are likely to be disposed of as garbage).

Although the remanufacturing of parts and components of domestic companies in China started relatively late, they also began to make strides in this market.

For example, from January to July this year, the production and sales volume of remanufactured engines of Xichai increased by 147% year-on-year, and through cooperation with Bosch, it opened up a precedent for the remanufacturing of domestic electronically controlled injectors. According to statistics, since May 2011, more than 13,000 remanufactured electronically controlled fuel injectors have been placed on the market. In addition, the person in charge of the Xichai remanufacturing base said with confidence that they will also cooperate with Bosch to carry out remanufacturing of components such as ECUs, electronically controlled pumps, and high-voltage rails, in conjunction with Xichai's supporting manufacturers for starters, generators, and boosters. Peripheral assemblies such as peripherals are remanufactured to further improve the quality of remanufactured engines and reduce the cost of maintenance and use of users.

The level of technology is not lower than that of Europe and the United States. It is understood that the remanufacturing technologies currently adopted by European countries and the United States are mainly based on the “replacement repair method and dimensional repair method”. Replacement of new parts directly for parts with severe damage; for parts with lighter damage, use mechanical processing methods such as traditional vehicles, grinding, and boring to restore the geometric accuracy of the part while changing the part size, and then increase the size. Size of non-standard new parts and accessories. This mode of remanufacturing is relatively simple, but there are obvious deficiencies such as lower remanufacturing rate of old pieces and greater waste.

The remanufacturing model with Chinese characteristics is the main technical method for remanufacturing in Europe and the United States “replacement repair method and dimensional repair method”, combined with non-destructive testing, surface engineering and cladding forming Advanced technologies, such as restoring the three-dimensional dimensions of parts, have also improved their overall performance.

According to industry sources, China's remanufacturing rate can reach 70%-80%, while in Europe it is only 60%-70%. In the world of remanufacturing, we have formed a tripartite relationship with Europe and the United States. Our remanufacturing technologies and products are reliable. In spite of this, most domestic users have misunderstandings about remanufactured products and their confidence needs to be strengthened. Therefore, government procurement is more needed to lead the concept of green consumption.