The rapid development of China's economy in the past decade has driven the development of China's welding industry. China has become the country that consumes the most steel in the world. With the advancement of technology, welded structural parts are widely used in construction, engineering machinery, shipbuilding, transportation, metallurgy, petrochemical, electric power, pressure vessels and other industries. Sheet cutting is the first step in the processing of welded products and an important guarantee for welding quality. The use of advanced modern cutting technology not only ensures the welding quality of the products, but also improves the labor productivity. At the same time, the manufacturing cost of the enterprise products is greatly reduced, and the production cycle is shortened. The extensive use of new processes and new technologies, intelligent precision cutting has become the development trend of the cutting machine industry.
Under the leadership of China Welding Association, the cutting machine industry has developed continuously for decades. Now it has become a well-established, powerful and large-scale manufacturing industry. The rapid development of the cutting machine industry has made the development of China's modern industry. A huge contribution. Metal processing online focuses on industry technology development.
First, the status quo and development direction of CNC cutting technology
1. The status quo of China's CNC cutting technology:
The manufacturing history of China's door type CNC cutting machine started late compared with developed countries, but it has developed very fast in recent years. In particular, some of the world's most famous cutting machine manufacturers have entered the Chinese market. These companies have high technical and management levels and strong strength. The overall level of its products is at the forefront of its global peers. China's high-end products in the cutting machine market; such as fine plasma rotary bevel cutting machine, gantry high-power laser cutting machine, special cutting equipment and other products are still dominated by these companies. Through market competition; many enterprises in China's cutting machines have been developing, relying on their own advantages, and have not been recognized in the technology, but also in business management have been greatly developed. At present, China's cutting machine industry has relatively complete product specifications and good performance. These products have dominated the cutting machine market in China.
1.1, CNC cutting machine:
1.1.1, CNC flame cutting machine:
Flame cutting is a more mature traditional cutting method. The machine can be equipped with multiple sets of cutting torches according to the process requirements to improve the production efficiency of flame cutting. Because the speed of flame cutting is relatively slow, the control method is relatively simple, so the dynamic rigidity of the machine gantry is not high. There are many domestic manufacturers of such products, and the price is also low. The future market demand will gradually tend to stable.
Flame cutting has its unique cutting characteristics in the field of large thickness cutting. In recent years, flame thick cutting technology has also received more and more attention. At present, China's cutting machine industry has made breakthroughs in large-thickness cutting torches, cutting nozzles and cutting gas paths, which has greatly improved the cutting capacity and cutting quality of large thickness. At present, the maximum cutting thickness has reached 3000mm, which has become a forging in China. Cutting equipment that is indispensable in the foundry, nuclear power and heavy machinery industries. Its market prospects and scope of application will become increasingly widespread.
1.1.2, CNC plasma cutting machine
Plasma cutting is widely used for cutting carbon steel and various non-ferrous metals and stainless steels up to 25mm due to its high cutting speed, small thermal deformation and good surface incision. Due to the large amount of soot, dust, arc and noise generated during the plasma cutting process, this will cause some pollution to the entire working environment. At present, the environmental pollution problem caused by plasma cutting is effectively controlled by underwater dust cutting and bottom exhausting. All kinds of CNC plasma cutting machines produced by some well-known domestic enterprises have reached the technical level of similar foreign products.
With the rapid development of plasma fine cutting technology, fine round hole cutting technology and standardized integrated system have been gradually improved, so fine plasma cutting will gradually become the mainstream of carbon steel plate cutting, and the market demand will increase year by year.
1.1.3, section steel cutting and space curve cutting
In modern industrial design, a large number of steel welding methods are used. Steel cutting has become a new hot spot in the development of cutting technology. In recent years, there have been many ideas and reports on industrial steel cutting. The industrial steels we refer to here mainly refer to variable cross-sections, oblate spheroidal and spherical cross-section profiles. Most steels are directly used for welding after cutting, because it is very difficult to finish the surface after cutting, and the efficiency is low and the quality is not easy to control. However, the cutting method used in the current method, the correctness of the cutting contour and the production efficiency, are far from the level of modern plane cutting. At present, the more effective method is to adopt the robot cutting method, and the processing of parts with different specifications and different shapes can be realized by offline programming, software programming (also teaching programming). It is equipped with a flame cutting system, a plasma cutting power supply, a fiber laser and other cutting methods; it can realize various types of steel such as (angle steel, channel steel, H-shaped steel, ball flat steel) for spatial straight lines, oblique lines, curves and grooves, etc. Multiple ways of cutting. The future market prospects are good. Metal processing online focuses on industry technology development.
1.1.4, CNC intersecting wire cutting machine
The numerical control intersecting wire cutting machine is mainly used for cutting cylindrical orthogonal, oblique eccentricity, multiple pipe intersections, etc. on various pipes, and can also cut the matching lines at the pipe end. It is a special equipment necessary for the tube processing industry. In recent years, China's intersecting wire cutting technology has developed very rapidly. Some technologies with independent intellectual property rights are widely used. Controlled by the processing data information of the upper computer (pipeline design system), the raw material pipe feeding, length measurement, fixed length cutting, residual material, waste pipe collection, label printing, automatic cutting and other processes are automatically completed. The automatic processing of raw materials to the automatic completion of the processing process of each process is realized, and the whole process of product processing is online control. At present, the domestically produced numerical control intersecting wire cutting machine mainly adopts a chuck type and a friction type intersecting wire cutting machine. It is widely used in steel structures, shipbuilding, marine engineering and pressure vessels, and there is still much room for development.
1.1.5, CNC laser cutting machine :
Since the end of the 1970s, laser processing methods have become popular in the field of thin-plate cutting. In the 1990s, high-power laser cutting machines began to be used for medium and heavy plate cutting, and have been successfully used in shipbuilding, engineering and other industries. The main reason for the more use of laser cutting technology is that the cutting has small thermal deformation, high precision and easy to realize unmanned automatic cutting. Since the laser cutting technology has been put into production and application, the development speed is very fast and the technology is getting better and better. By using a high-power laser, the thickness of the cut low-carbon steel plate has reached about 30 mm, and the cutting speed is close to the plasma cutting speed, which is superior to plasma cutting in terms of laser cutting surface quality.
In the past, most of China's high-power laser cutting machine market was monopolized by foreign products. The products were expensive and difficult to service, which made it difficult to promote high-power laser cutting technology. After years of exploration and research and development, some domestic enterprises have mastered some key cutting technologies and process parameters. At present, they can produce CNC gantry high-power laser cutting machines for medium and heavy plate cutting. With the strengthening of people's environmental awareness and the pursuit of high quality products, coupled with the localization of high-power laser cutting machines, the use of laser cutting technology to gradually replace part of the flame and plasma cutting, will become the development trend of the cutting industry in the future. Metal processing online focuses on industry technology development.
1.1.6, CNC high pressure water cutting machine
In recent years, "CNC super high pressure water cutting machine" (also known as waterjet) relies on a large precision CNC platform and a higher power, higher pressure high pressure system, five-axis, six-axis control system, slope and self The application of new technologies such as correction cutting, water cutting and tool processing extends the application of water cutting technology to a wider range of metal and non-metal (and food) processing and industrial manufacturing. The combination of cutting and machining, from cutting and cutting to processing semi-finished products and finished parts, improves processing efficiency and value, making it easy to solve the problem of cutting and processing of multi-variation, large-scale and complex structural and difficult-to-machine materials. The application area is expanding and gradually entering the rapid growth period.
Second, the development direction of China's cutting industry :
2011 is the first year of China's “Twelfth Five-Year Plan†and is also a crucial period for the development of the cutting industry. Our domestic cutting equipment manufacturing enterprises should constantly adjust the product structure, change the operating mode, improve the quality of employees, enhance the independent innovation capability of enterprises, better serve the rapid development of the national economy, and provide low-carbon, high-efficiency and environmentally-friendly advanced national economic construction. Cutting technology and cutting equipment.
During the "Twelfth Five-Year Plan" period, China's manufacturing industry will develop in a higher and more advanced direction. Improving product quality and productivity, and reducing costs are the goals that companies are pursuing. Such advanced and high-efficiency automated cutting equipment will be widely used. Our cutting machine industry should seize this development opportunity, further improve the product quality of CNC high-power fine plasma cutting machine, promote the production application of high-power laser cutting machine, and develop a variety of high-efficiency, high-precision special cutting equipment to meet various industries. The automatic cutting equipment with different production requirements is the focus of our cutting equipment manufacturing enterprises.
In recent years, the development of China's cutting machine industry is obvious to all, but there is still a certain gap compared with the counterparts in developed countries, especially in the major supporting products such as special CNC systems, fine plasma power supplies and high-power laser sources. . China is a big manufacturing country of cutting machine tools, but the main supporting parts and core technologies are still monopolized by foreign companies, which restricts the development of China's cutting tools to higher goals. Therefore, the research and development of major supporting parts in the cutting machine industry will be intensified, and the technical exchanges and cooperation between enterprises and some domestic colleges and universities and professional scientific research institutions will be strengthened, and the industrialization of scientific research results will be further accelerated, so that China will become a strong manufacturing country of cutting tools as soon as possible.
Third, give full play to the role of the industry special committee bridge and link
In the face of the current complex and changing environment of the global economy, our cutting machine industry will face many unfavorable factors. In the face of difficulties, combined with the adjustment and revitalization of the top ten industrial industries during the “Twelfth Five-Year Plan†period. We must establish the strategic goals of the industry development to adapt to the new situation, timely adjust the product structure, improve product quality, further enhance the independent innovation capability of enterprises, and create a number of well-known brands that can be popular in the domestic market and competitive in the international market. This will enable China's cutting machine industry to develop to a new level.
As a special committee of cutting equipment, on the one hand, it is necessary to strengthen its own construction and improve its ability to serve enterprises. We will implement and implement the welding industry association's work priorities and work objectives to all production enterprises, and further play the role of bridges and ties. Next year we will focus on the following aspects.
1) Promote the adjustment and revitalization of the top ten industrial industries proposed by the State Council in the industry. Through the network and other information platforms; pay attention to the development of key strategic areas supported by the national strategic emerging industries and the Ministry of Science and Technology, develop high-end cutting machine products with market demand, and further improve the manufacturing level of automated cutting equipment in the industry and promote The export volume of equipment in the advanced equipment manufacturing industry.
2) Strictly implement relevant industry standards, strengthen enterprise production management, improve quality control system, enhance employee quality awareness, and improve product quality. Work with the mechanical industry cutting product quality testing center to do a good job in product quality testing.
3) Vigorously assist industry associations to run the annual Beijing Essen Welding and Cutting Exhibition, fully utilize the platform of the exhibition to promote communication between users and enterprises, and strengthen mutual communication and technical exchange between enterprises. After the meeting, we will organize the industry experts to complete the exhibition report of the cutting machine part according to the requirements of the association;
4) In recent years, China's cutting machine industry has developed rapidly, and we have formulated and revised some product standards. However, there are still some products that have not yet implemented relevant standards, which makes the quality of these products uneven, resulting in disorderly competition among industries. In order to establish a fair and just competition platform in the industry, industry experts will be organized to draft 1 or 2 product standard drafts and send them to the industry association for declaration.
5) Strengthen exchange activities with domestic universities and research institutes, promote the industrialization of scientific research achievements, regularly hold new product launches in the industry, new technology applications and promotion seminars, and comprehensively improve the quality and technical content of cutting tools.
Conclusion The development of the cutting industry has always been inseparable from the development of metal manufacturing enterprises. Through close cooperation and technical exchanges between enterprises, this will bring us many different production concepts, challenging experiences and technologies to the cutting machine industry. . These companies will give us a lot of new process ideas and requirements, which will continue to propose new topics and new design concepts for our industry, and also promote the further development of our industry. Metal processing online focuses on industry technology development.
Finally, let us make new contributions to China's welding industry under the new situation.
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