1 The electrical system used by the machine
has reliable control performance and strong anti-interference ability.
2 High precision Thrust Ball Bearing and
tapered roller bearing are adopted in the spindle of machine, with high rotary
precision and the large bearing capacity.
3 The machine tool has the function of two
axis linkage, which can be used for turning various types of surfaces.
4 The speed of the worktable adopt two level
of gears, gear reducer and motor with frequency converter to achieve stepless
speed change, very convenient to adjust and operate.
5 The machine feed shaft adopts precision
ball screw and linear guide rail, so that the machine has the characteristics
of high precision and high rigidity.
6 The machine tool is equipped with five
station electric knife, which has the function of automatic knife change.
7 The machine is equipped with large flow
water cooling unit and high-lift pump to ensure good cooling effect.
8 The machine has closed housing (except the top
of the slide), and the workspace is completely protected by screen seal. It can
also easily open the protective door and is highly accessible when operation.
9 The machine use centralized lubrication,
circular lubrication and other methods, supply oil to each lubricating point,
reduce friction resistance, reduce temperature rise and reduce surface wear..
10 The Z shaft adopts the hydraulic balance oil
cylinder to balance the weight of the slide table and the tool holder. The
balance ability is strong and the stability is good, thus the life of the screw
and the guide rail can be improved.
11 The operation procedures of the machine are
very simple, the degree of automation is high, and the unstable factors of
human error can be reduced to the lowest level.
Cnc Vertical Lathe,Cnc Lathe,Large Vertical Lathe,Special Vertical Lathe Xinxiang Sunrise CNC Bearing Equipment Co., Ltd. , https://www.cncsunrise.com
According to Zhang Jie, China began researching polyurethane raw materials in the 1950s. Since then, some units have successively researched and developed toluene diisocyanate (TDI), diphenylmethane diisocyanate (MDI), etc., and built 500 tons per year. The TDI production facility lays the foundation for the development of the polyurethane industry in China. Due to the weak foundation of raw material support and application development, the polyurethane industry in China is developing slowly.
In the 1980s, China's polyurethane industry began to introduce technology. At this time, China's production of polyether polyol is basically independent research and development, and some brands of products can basically meet the needs of the domestic market, laying a solid foundation for the development of China's polyurethane industry. By the mid-1990s, the production of some raw materials and products entered the stage of independent innovation. A large number of companies are digesting and absorbing on the basis of the introduction of technology, transforming the equipment, continuously expanding production capacity, increasing varieties, and improving product quality. Many research institutes and manufacturing companies conduct formulation research on the market demand. Polyurethanes are widely used in the fields of insulation, refrigeration, construction, automobile industry, and medical equipment. The polyurethane industry has entered a stage of rapid development.
Zhang Jie told reporters that after half a century of development of the polyurethane industry in China, products have now been widely used in various fields of the national economy, and China has become the fastest growing region in the polyurethane industry in the world. In 2000, the output of various types of polyurethane products in China was nearly 1 million tons. In 2003, the apparent consumption of polyurethane products in China reached 1.6 million tons. The apparent consumption in 2005 is expected to reach 1.8 million tons.
However, at present, there are few isocyanate enterprises in China, and the products are mainly MDI and TDI, and the output is far from the demand. The huge gap between China's market demand and output has caused multinational companies to compete to build factories in China. Yantai Wanhua Polyurethane Co., Ltd. MDI device construction and the localization of isocyanates of multinational corporations have greatly eased the supply and demand contradiction of polyurethane raw materials in China.
During the "10th Five-Year Plan" period, China's polyether polyol industry has made considerable progress. With the continuous absorption of imported technologies and the transformation and expansion of installations, there are currently more than 30 polyether polyol production enterprises in China with an annual production capacity of 80. About 10,000 tons can basically meet the needs of the market. However, compared with the advanced level in foreign countries, China's related technology is still not perfect, the product brand number is small, and a considerable amount of polyether polyol is also imported every year. This is one of the directions for the polyurethane industry in China in the coming period.
Zhang Jie pointed out that technology import was once an important factor in the rapid development of China's polyurethane industry. However, with the rapid development of China's national economy and polyurethane market, multinational companies that have mastered key technologies no longer transfer technology to China, but instead invest in factories in China to control the polyurethane market in China.
Polyurethane enterprises in China have begun to embark on the road of independent innovation in the absence of technology introduction. Yantai Wanhua Company can be called a model for the independent innovation of polyurethane industry in China. Polyurethane companies, especially TDI production companies, must solve the problems of technology and scale as soon as possible, learn from the successful experience of Wanhua, and cooperate with scientific research institutions, break through bottlenecks with advanced materials, processes and control technologies, and information technology, and through joint reorganization, Give full play to capital and resource advantages, achieve scale, and increase production capacity so that we can meet the challenges from large foreign companies.
In the process of rapid development of the polyurethane industry in China, technology introduction has been one of the important driving factors. However, with the increasingly intensive industrialization of the polyurethane industry in the world, the introduction of the polyurethane industry becomes more and more difficult. Zhang Jie, secretary-general of the China Polyurethane Industry Association, said in an interview with reporters recently whether it is the key to the development of the polyurethane industry in China that the independent innovation of technology can be promoted.