The world mounts (big popular name pressure machine) the maximal pressure forging press 800 MNs (80,000 tons) multiway model forging press at present , reason Chinese second heavy-duty machinery conglomerates is constructed autonomously. On November 29, Chinese mechanical industry federation has convened 800 MN multiway models forging press project population project approachment meeting in Beijing host.
At the meeting, experts have spoken highly of this one project. Expert Zeng Fan Chang who comes from aviation industry says it is that the world is equivalent to the level product , will make large-scale our country aviation forging level of production produce the quality lifting, will change large-scale world aviation forging producing a pattern together. Dual Corp. deputy chief engineer Chen Xiao Ci said the critical piece surpasses 80,000 tons of pressure machine disregarding being weight and volume being measuring level's , stick weight exceeds 250 tons of level component being no less than 7 a piece right away , the person makes degree of difficulty being imaginable.
That the aircraft building big medium-sized aircraft to require that big pressure machine is modern
makes middle , light metal is that (titanium alloy sigmatism proportion is more and more high
mainly). Only when using light metal more,the aircraft function ability gets rise unceasingly. But,
light metal such as titanium alloy, it's deformation needs the very high unit intensity of
pressure time. Need to produce light metal model forging , must increase the press machine
actuating pressure by large margins right away.
Above at present, owning 40,000 tons of level in the world model forging press country only American-Russia-France 3 countries, USA among them owns 4 of 50,000 tons of level , France owns 1 of 65,000 tons of level , Russia owns 2 of 75,000 tons of level.
Big pressure machine is to construct what large-scale aircraft needs essential equipment of component. According to what introduced by insider, Airbus produces out the A380 passenger plane therefore the company being able to catch up from behind, a key factor it is its molding exploring help , A380 landing gear having arrived at Muscovite on giving birth to a child in large-scale forging, to be to be completed in Russia on 75,000 tons of press machine on world giant passange plane marketplace. One of key factor becoming mordent competing with empty space visitor in this difference be equipped with going ahead,
Our country has a mind to producing big pressure machine in fact long ago. In 1975, one machine of plain prepares three machine having submitted to National Planning Commission that time about building large-scale die forging water press base requesting instructions to report, and getting an official reply to subordinate. Since but that time were what condition is limited, fabrication having accomplished design and the model machine only, the ultimate target has not been come true together.
Afterwards development of aerospace industry is restricted gravely during the 30 years, since not
having important pressure machine , our country. Middle promulgating this year, a project
concentrating on development is branch line aircraft and big medium-sized transport planes, but big
pressure machine is to produce big essential medium-sized transport plane key equipment. Challenge
large-scale limit equipment fabrication
In fact, except aerospace industry, the other important industrid department can't need forging
large-scale. Chen Xiao Ci has listed other important big pressure machine use to the reporter: And
the combustion gas turbine uses large-scale wheel disc forging , the cigarette gas turbine uses
large-scale wheel disc forging , the engine blade , large-scale boat of all kinds use model forging
, the power station uses large-scale model forging , pressure container forging, type civil-use
goods model forging childbirth, all can't be seprated from big pressure machine other.
China did not have big pressure machine , large-scale forging childbirth was going to be in progress coming passing the method casting or forging freely in the past. Since material consumes height, moreover accuracy lack, cause a few forging to have to enter port. Big pressure machine formation, the childbirth will use a lot of workpiece becomes forging from cast-on outwell , forging from liberty becomes die forging , makes product quality be advanced thereby.
Chen Xiao Ci says big 80,000 tons of pressure machine owns independent intellectual property right completely. He expresses , replaces people's unremitting efforts process several, enterprise and "R&D" institution at present made in China already get a breakthrough in the field of big pressure machine entirety structure and technology. What big obstacles to do not exist therefore on the technology, on needing the machine applying modern control technique to big pressure.
However, 80,000 tons, big pressure machine formation is ample but complicated one system engineering after all , some key technology need still captures. According to what introduced within much time for 1 year going over, dual Corp. the research institute already waits for an unit to grind hair with regard to the project earlier stage setting up a project working having been in progress deliberating with the machinery science research institute , south central university , Tsing Hua University , Yan Shan university , Chongqing University , Northwest Polytechnical University , Nanchang aviation industry academy , Xi'an heavy-duty machinery research institute , Beijing aviation material, And have reached the large-scale die forging hydraulic press designing that the technology studies the project allies self with the letter of intent tackling key problems creating key.
