"A lot of China's export products have been spotted by the foreign trade protection policy. Before that, tires and wheels were subjected to the American "double reverse" and special protection. Now, the carbon black of the tire's raw materials has started to become the target of anti-dumping in some countries. ."
At the 2012 China Rubber Industry Association Carbon Black Chapter Conference held in Tianjin, an industry source disclosed that after India’s initial anti-dumping final ruling and special safeguard measures were initially imposed on China’s carbon black, a high tariff was imposed recently. Europe is launching an anti-dumping investigation against carbon black imported from China.
According to reports, carbon black is the second largest raw material for rubber tires except for the largest amount of rubber . In 2011, China’s output was 3.85 million tons, an increase of 13% over the same period last year. Compared with the increase of 17% years ago a few years ago, its increase has declined. According to the data, during the five years from 2006 to 2010, China’s new carbon black production capacity totaled 2.64 million tons, with an average annual growth rate of 17%. At present, China's carbon black production capacity is close to 5.5 million tons/year, accounting for 38% of global production capacity, and is increasing at a scale of 400,000 tons/year.
According to Wang Cunjin, Chairman of the China Black Rubber Branch of the China Rubber Industry Association and chairman of Suzhou Baohua Carbon Black Company, the export volume of carbon black in China has maintained a rapid growth momentum since 2011, and the export volume is close to 500,000 tons, which is the total output. 12.7%, the export amount reached 600 million US dollars. As a result, China has become an important carbon black exporter in the world.
At the same time, carbon black production in the EU countries and North America is shrinking. According to the analysis, the main reasons are: First, dragged by the financial crisis; Second, most foreign carbon black companies use petroleum-based feedstock oil, while oil prices remain high, compared to the cost of using coal-based feedstock oil for Chinese companies. high.
The rapid growth of China's carbon black exports has attracted the attention of other countries. India first attacked China. It carried out carbon black anti-dumping in China in 2008, carbon black was re-examined in 2010, and carbon black “special protection†was investigated last year. The current preliminary results are not favorable to Chinese carbon black companies. Wang Cunjin believes that China's carbon black exports will further face new challenges.
Rising raw materials, rising labor costs, and ever-increasing market competition, auto parts companies call for "efficient processing solutions." China's auto industry is in an unprecedented period of rapid development. Even under the international financial crisis, it is still "outstanding." The strong development of the automotive industry has given birth to the booming of the auto parts processing market and has become the subject of machine tool consumption.
The development of the automobile industry depends not only on the development of the machine tool industry but also on the technological progress of the machine tool industry. As an "engine machine", the machine tool is an important equipment for automobile production, which accounts for about two-thirds of the total investment in fixed assets of the automobile factory, which directly affects the manufacturing cost of the automobile. According to the analysis, the demand for machine tools in the automotive industry already accounts for 40% of the total consumption in the machine tool industry.
The demand for machine tools from auto parts manufacturing is huge
The auto parts industry is an important part of the auto industry. The development of the auto industry has provided a huge market for the development of auto parts companies. According to relevant reports, the total output value of China's auto parts industry exceeded 1.4 trillion yuan in 2010. With the continued rapid development of the automotive industry, the auto parts industry will also usher in a bright future.
It is understood that the current consumption of machine tools in the automotive industry is mainly divided into two levels: First, the four lines used for vehicle production, namely stamping, welding, painting and assembly lines; second, including the engine, transmission, steering system, Processing of automotive parts including brake systems, transmission systems, and suspension systems. Only the press line needs the machine tool in the four lines of vehicle production. The focus of machine tool consumption is on the second level, that is, auto parts processing that accounts for about 70% of the total vehicle equipment value. Some experts have calculated that the demand for machine tools for automotive parts processing is more than ten times greater than that for vehicle manufacturers.
New requirements for machine tools in automotive parts processing
As the core functional component of the car, engine processing equipment is one of the most important equipment for automobile production. With the acceleration of new models of vehicle companies, the requirements for flexibility of engine production lines are getting higher and higher. Usually, an engine production line needs to be able to meet at least three models. At the same time, the lightweight trend in the development of automobiles has changed the requirements for the engine block and cylinder head materials from cast iron to aluminum alloy, which has raised new and higher requirements for engine processing machines.
The main components that make up the engine are the cylinder block, cylinder head, crankshaft, camshaft, connecting rod and so on. The machine tools needed to process these parts are mostly high-efficiency, high-performance, high-reliability CNC machine tools or special CNC machine tools. Among them, cylinder and cylinder head processing flexible production lines are mostly composed of horizontal machining centers; crankshaft processing equipment is mainly car pulling machine tools, CNC crankshaft milling or milling machine, CNC crankshaft grinder, crankshaft polishing machine, etc.; camshaft processing equipment is mainly Camshaft CNC lathes, camshaft grinders, etc.; and connecting rod processing equipment are mostly dedicated equipment, such as double-face grinders.
As competition in the market continues to intensify, customers place more stringent demands on automotive suppliers' products, technologies, services, and products, and pay more attention to the safety of automobiles. With the implementation of national energy-saving and emission-reduction measures, the fuel consumption and pollution level of automobiles are also receiving much attention. The labor costs in the Chinese market are also rising. These factors have led to an unprecedented increase in the pressure on auto parts companies, and put forward higher requirements on the reliability, production efficiency, accuracy, and cost-effectiveness of parts and components processing.
Urgent need for efficient processing solutions
The dramatic increase in vehicle production capacity will inevitably require a significant increase in the production capacity of auto parts. In the face of increasing Chinese labor costs, auto parts manufacturers must consider adopting more efficient, more complex, and higher degree of automation. To address this contradiction between manufacturing costs and labor costs, the Swiss company Toners has introduced a multi-spindle automatic turning center for the efficient machining of precision shaft parts in automotive parts.
To this end, Ding Liping, secretary general of the China Black Rubber Branch of the China Rubber Industry Association, reminded companies to keep an eye on the market dynamics of foreign carbon blacks and to start anti-dumping early-warning mechanisms as soon as possible so as to prevent problems.
This article uses the 8-axis CNC automatic turning center MultiSigma8×24 of Toners as an example to illustrate this efficient turning solution. MultiSigma8×248 spindle CNC automatic turning center is 8 machining spindles. Each spindle is an independent motor-driven electric spindle. 24 CNC linear axes control the tool to process the shaft parts, and includes 2 independent back spindles. Can complete the shaft parts of the external turning / bore machining / horizontal drilling / milling / automatic U-turn processing. The main processing side has 8 rotation spindles evenly distributed along the circumference, and all the operations of the front surface of a complex part need to be distributed to the 8 spindles as evenly as possible, so that the parts are processed at the front side. Compared to the single spindle lathe, it is greatly reduced. After the 7th and 8th spindle positions are gripped by the 2 back spindles, the part is turned and the processing cycle of the part is half of the single back spindle machining time and 8 spindle machining operations The longest time, which greatly improves the processing efficiency, reduces the space occupied by the machine tool and the number of operators required, and improves the stability of the parts, which is very suitable for the production of super large batches of parts.
For MultiSigma 8×24, its 24 linear control axes are completely controlled by CNC. In addition to the spindle position of No. 7 (cutting process and back spindle machining) and spindle position No. 8 (cutting process and back spindle machining), the remaining 1/2/3/4/5/6 spindle positions can be drilled at the same time. Hole and Cylindrical turning process. Examples are as follows:
For the No. 1 to No. 6 spindle positions, there are two independent numerically-controlled tool holders, namely the cross slide holder (X11/Z11 to X16/Z16) completes the external turning and the No. 1 to No. 6 spindles are drilled in front of the spindle. The hole holders (Z21 to Z26) complete the frontal drilling. Since these holders are completely independent and fully controlled by CNC, the outside turning and front drilling can be completed at the same time.
Parts are cut at the front of No. 7 and No. 8 spindles. After cutting at this position, the front of the part is completed and replaced by two independent back spindles. Turning/drilling is performed by back-side tool holders X47 and X48. Boring / face groove and other processes. After the completion of the two back spindles on the tool post on the rear side of the X47 and X48, the parts are automatically collected by the collecting device into the finished part box on the outside of the machine tool, and a complete part is completed. Repeat the above process to complete the efficient and continuous processing of parts.
Shenyang Machine Tool Complete Equipment Co., Ltd. SUC8114 CNC machine tool at both ends of the hole processing, the machine is suitable for the workpiece length of 400 mm -1250 mm range of various crankshaft or camshaft parts at both ends of the hole processing.
Shenyang Machine Tool Complete Equipment Co., Ltd. is mainly to provide specialized equipment and complete production lines for the processing of automotive parts. In recent years, the focus of the product has been on automotive engine blocks, cylinder heads, crankshafts, camshafts and connecting rods and other auto parts. Processing, development of horizontal machining centers and crankshaft, camshaft complete set of numerical control equipment, already has the ability to complete the project contracting, turnkey projects.
In 2010, Shenyang Machine Tool Complete Equipment Co., Ltd. provided 7 crankshaft processing lines for Tianrun Crankshaft Co., Ltd. The four-cylinder crankshaft push-pull loading and unloading automated production line project planned for Tianrun crankshaft 4GI four-cylinder crankshaft is independently developed and designed and manufactured by Shenyang Machine Tool Complete Equipment Co., Ltd. and has complete independent intellectual property rights. Shenyang Machine Tool Plant provided the project with its newly developed SUC8216 CNC face center hole machine, SUC8117J double knife CNC lathe, and revised SUC8149 crankshaft oil hole machining CNC machine tool and SUC8114 two-end hole machining. CNC machine tools and so on. In response to the process characteristics of the Tianrun Crankshaft Project and the technical requirements of each process, Shenyang Machine Tool Industry Co., Ltd. has formulated a targeted machining process for it, including: the milling end face, the milling and positioning face, and the car head and the outer circle. The axle journal adopts the double-servo tool carrier CNC lathe turning technology. The connecting rod neck and undercut groove adopt the CNC follow-up milling machine and the connecting rod neck CNC machining process. The crankshaft oil hole adopts the 5-axis automatic drilling technology based on MQL trace lubrication technology. Cutting machine processing technology, both ends of the flange screw hole and pin hole keyway using double-sided turret multi-station power head composed of a dedicated horizontal machining center to complete the final balance to re-use automatic full-heavy-balancing machine processing technology.
This four-cylinder crankshaft automatic production line transportation system and robot feeding mode, through the operator's flat push crankshaft can achieve sequence between the crankshaft transmission, through the manipulator can realize the crankshaft from the logistics line to the machine within the transmission. The rational formulation of the production line process not only reduces the logistics system cost, reduces the processing assistance time, but also improves the production efficiency. Moreover, as the degree of compounding of the machine tool is increased, the machining process is more concentrated and the length of the crankshaft production line is shortened. At the same time, because this production line is composed of flexible equipment, it can be adapted to crankshaft machining of many varieties, and it conforms to Tianrun's crankshaft production characteristics of multiple varieties and small batches. It meets Tianrun crankshaft's annual output of 90,000 crankshafts and single-piece production beats 3.4 minutes. Production requirements.
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