磨料磨具在军工业中的应用前景分析
我国军工业的特点
In 2013, up 10.7% compared to last year, China's defense budget and 3 years in a row to keep rose more than 10% of the speed, the defense budget for the first time made clear: "promote the development of national defense and army building science, speed up the transformation the need of combat power generation mode, an appropriate increase of high-tech weapons and equipment and supporting facilities construction investment," the use of the direction, since 2011, generations of advanced weapons and equipment have been active exposure, reveals the confidence of the construction of the defense industry in our country. 31 the successful test flight of the j20, fighters, manned spacecraft and the successful launch of chang e one, the success of China's first aircraft carrier sailing all show that China's defense industry will no longer be leaning forward, but the strut reveal muscle to the world.
Although, as early as 2008, China's defence white paper, as a whole listed explicitly points out that the support of military enterprise, accelerate the development of military enterprises. But, in fact, it was not until 2012 that the procedures for the war industry enterprise shareholding system reform in our country to announce that way after released, military industrial enterprises, restructuring was quickly on the agenda, more and more capital into the military industrial enterprises, for the development of the military enterprise with a rapid development period.
At the same time, the development of the industry is not always and is closely relative to the macro economic, political and military pattern is the main factors that influence the industrial development. Since 2011, with the rising tensions in the international situation, China's growing in the east China sea, the south China sea issue, result in defense industry sector continued downturn in the economy as a whole, also maintained a rise, but China's defense budget has doubled, the number is already beyond GDP growth.
The direction of China's national defense construction
This year on April 16, the state council information office issued titled "the diversification of China's armed forces to use" "defense white paper" in 2013, the second part "the armed forces of the construction and development of" points for us, in the next period our country industry development direction:
Air force clear requirements: "the development of a new generation of combat aircraft, new surface-to-air missile and the new type of radar and other advanced weapons and equipment, improve the early warning, command and communication network, improve the ability of strategic early warning, deterrence and remote air strikes." The task; Navy not only highlight the focus of the construction of the carrier in our country, also shows that our country should improve the offshore mobile operations, offshore cooperation and ability to cope with non-traditional security threats, and enhance the determination of strategic deterrence and counterattack ability; Army has highlighted the information operations and remote assault operations ability; Disclosed for the first time and second artillery force, not only made clear the "shoulder curb other countries to China use nuclear weapons, carries out the nuclear counterattack" task, also shows that our country will be in the nuclear industry construction, there will be further action.
White paper made clear that the Chinese armed forces "resolutely maintain core national interests". And the historical experience tells us that without a strong military power, safeguard national core interests just talk. In the international situation is increasingly tense, peripheral country in our country continuously provocation, only show their muscles can guarantee the country's core interests. Stealth fighter aircraft, aircraft carrier carrier-borne fighter aircraft, heavy military transport aircraft, aircraft carriers that the Chinese military equipment development from land to sea the integration of development trend, and the application of "beidou" navigation system, revealed the military industrial enterprises in our country is gradually to develop in the direction of dual-use.
The industrial abrasives request high, refined, sharp
Abrasive abrasive tool widely used in military industry, concentrated in the manufacturing, shipbuilding, aerospace, military equipments gun manufacture and so on each link of weapons and equipment manufacturing, its application range is wide, not only and a high content of science and technology, the requirement of accuracy is high, which determine the abrasives used in military industry, must be high, refined, sharp.
The use of abrasives in aerospace equipment
Our country is after the United States, Britain, Russia, France, the fifth capable of independent countries in the development of the aviation engine. Engine is the aerospace equipment "heart" and the source of power. Aircraft engine manufacturing, cannot leave the abrasives and grinding. As in grinding, aircraft engine with surface of various valve, sealing surface, working surface of the nozzle, require high luminosity and shape, dimensional accuracy, need to grind to reach requirements.
Aeroengine requires good thermal stability and red hardness and excellent high temperature mechanical properties. Aviation product constantly upgrading, especially as the widespread use of various kinds of composite materials and refractory materials, the processing technology is also gradually improve. At present, more and more in the aviation sector in the use of PCD and PCBN material cutting tools, grinding tools and advanced technology such as heavy grinding. PCD cutting tool, in particular, with superb cutting performance and durability and high toughness obtained the consistent approval and a wide range of applications. Such as processing engine piston of PCD cutting tool, the engine piston pin hole boring machining with PCD boring tool, narrow deep groove machining aeroengine turbine blade root of electroplated CBN grinding wheel. Ceramic bond CBN grinding wheel, also used in the processing of aeroengine.
The use of abrasives industry in satellite and its application
Electroplated diamond grinding wheel in grinding complex radome surface has a good effect. Ball screw in satellite, missile guidance system, the capsule space transmission device are used. Ball screw manufacturing need CNC screw grinding machine. High speed grinding is effective way to improve grinding precision and surface quality, at the same time can significantly increase the production efficiency. NSK EMO hannover in 2005 on display at the speed of 240 m/min of ball screw and rolling guide. Domestic ball screw speed of 100 m/minLR, also has the very big disparity. Numerical control screw grinding machine companies are now using CBN grinding wheel grinding. These two kinds of superhard material products should be pioneering spirit of enterprise, improve the level of research and development, to "actively promote space infrastructure construction, promote the development of satellite and its application industry." To make due contributions.
Abrasives in the use of sophisticated weapons and equipment manufacturing
Missiles, warships, aircraft, guns equipment manufacturing is inseparable from the high-end CNC machine tools and basic manufacturing equipment. Experts expect that by the end of the 12th five-year, our country high-end CNC machine tools and basic manufacturing equipment special will greatly enhance our capacity for independent innovation, to master a large number of core technology with independent intellectual property rights, the overall technical level into the international advanced level. At present, China's military equipment renewal is accelerating, the next few years high-end CNC machine tools and basic manufacturing equipment will play a more and more important role in the war industry enterprise.
Although the abrasives industry in China has a history of decades of development, but in our country mostly abrasives products mainly medium and low-end products. However, military industry are very strict with abrasives, abrasives enterprises want to gain a foothold in the military industry, it must change the mode of production, increase investment in science and technology, improve product technology content, adhere to the development direction of high-end products. Only in this way, to take a new round of economic and development the commanding heights of science and technology, provide more effective service for the development of the military enterprise and guarantee, thereby giving impetus to the development of enterprises, as well as the revitalization of the abrasives industry.