Before ascend body whole world 4 I make 80 thousand tons of big press independently

The forging press with world the at present greatest upward pressure -- , 800MN (80 thousand tons) much to die forging press (common weighs big press) , will by China company of the 2nd heavy-duty and rigid group is built independently. On November 29, chinese mechanical Joint Industry Conference is chaired in Beijing held 800MN much to project of die forging press overall program argumentation is met. On the meeting, experts gave height the opinion to this one project. The expert Ceng Fanchang that comes from aviation industry says it is world top class product, will make the manufacturing level of forging of our country large aviation generates qualitative promotion, will change world aviation large forging produces pattern. Chen Xiaoci of assistant chief engineer of 2 heavy groups says, 80 thousand tons of press are main no matter the component is weight and bulk be class exceeding an amount, odd the component of more than 250 tons of class does not issue a weight 7, its make difficulty can be imagined. Build large and medium-sized modern plane makes plane need big press in, light metal (basically be titanium alloy) use proportion is higher and higher. Use light metal morely only, the performance ability of the plane gets rising ceaselessly. But, alloy resembling titanium such light metal, very high unit intensity of pressure needs when its are out of shape. Want to produce forging of light metal model, with respect to the actuating pressure that must increase compressor considerably. Current, the state that press of die forging of above of 40 thousand tons of class has on the world has beautiful, Russia, way only 3 countries, its are 4 when Sino-US country has 50 thousand tons of class, france is had 6.

1 of 50 thousand tons of class, russia is had 7.

2 of 50 thousand tons of class. Big press is to build large airlines place to require the equipment with essential component. Introduce according to the personage inside course of study, on market of world air bus, airbus company so can the latercomers surpass the formers, production gives A380 plane, a main factor is it the help that sought Russia on large forging production, of A380 landing gear shape, be in Russia namely 7.

Finish on 50 thousand tons of compressor. In this differentia different on equipment, become Boeing and one of main factors that empty guest competes. Our country produces big press already purposely actually. 1975, former one machine ministry and 3 machine ministry were referred to the state committee of planning at that time report about building the ask for instructions of base of water press of large die forging, and get written reply to a subordinate body. However because conditional place is restricted at that time, finished the production of design and prototype only, ultimate goal did not come true. 30 years later, because do not have big press, the development of industry of our country aerospace is restricted badly. Promulgate this year " a certain number of opinions that the State Council revitalizes equipment manufacturing industry about accelerating " in, a project that develops mainly is branch line plane and large and medium-sized conveyor, and big press is produced namely large and medium-sized the crucial equipment with indispensable transport. Challenge large limit equipment to make in fact, outside dividing industry of aviation, spaceflight, department of other and essential industry also needs large forging. Chen Xiaoci listed the other and main use of big press to the reporter: Gas turbine uses large turntable forging, of all kinds motor with turbine of large turntable forging, flue gas large and blade, marine modular forging, power station uses large model forging, pressure vessel forging, with etc type the production of the civil forging that taste a model, cannot leave big press. In the past, china does not have big press, the production of large forging should undertake through the method that cast or forgings freely. Use up as a result of material tall, and precision is insufficient, cause a few forging to must be imported. Of big press build, the production that still will make make much work by cast become forging, forging by freedom become die forging, make product quality gets promotion thereby. Chen Xiaoci says, 80 thousand tons of big press own own intellectual property completely. He expresses, through the indefatigable effort of a few acting people, at present Chinese production enterprise and scientific research unit had been in the integral structure of big press and technical respect obtain a breakthrough. Because of the nonexistent what is big obstacle on this technology, need to use contemporary control technology to big press only. Nevertheless, of 80 thousand tons of big press building is a giant and complex system project after all, still a few crucial technologies need to capture. According to introducing, in the time that goes more than one year, 2 heavy groups already as scientific as machinery academy, medium south institute of industry of university, Tsinghua university, Yan Shan university, Chongqing university, northwest industry university, Nanchang aviation, Xi'an is heavy-duty and mechanical the unit such as academy of material of aviation of institute, Beijing the project approving of early days research and development with respect to the project works, and reached design of hydraulic press of large die forging make crucial technology study the project tackles key problem jointly intent book. Chen Xiaoci expresses, to reflect the times impress of big press, stressing own innovation while not only oneself. After all 80 thousand tons of big press are the biggest press on eye preexistence, should reflect world level, this does not eliminate to introduce the possibility of foreign advanced technique appropriately. "But this is local, is not whole. " he still tells a reporter, in the process that has technical communication with abroad, the person of the same trade of the country such as beautiful, Russia, law also shows strong interest to this project. CNC Milling