Difficult be out of shape plank is complex appearance component is agglutinant technology of medium pressure figuration
- source:TAMIKO CNC Machining
5mm) of quality of spare parts figuration rise very advantageous [6-7] . Nextpage3 agglutinant medium can control board local decrease thin, reduce spring back the agglutinant character of agglutinant medium makes board preform surface gets the action of tangential and agglutinant adherent stress, be equivalent to surface of edge board preform bringing to bear on tensile, be helpful for board preform flows into mould antrum, place of other figuration technology does not have this, this complex to low plasticity and appearance board member figuration makes a gender rise very beneficial. Board the stress that condition of this kind of stress alleviates or avoids end ministry centers preform, figuration mural profound change is minor. To the graph 3 medium component, board preform falls in the action of tangential and agglutinant adherent stress, material manages flow to curved surface of smaller part diameter, be helpful for diameter of local smaller part (≤ 2.
0mm) curved surface figuration, make a wall large very thin (0.
5mm) component part can come true to wait for mural thick figuration nearly (reduction ≤ 4% ) . And to rigid punch figuration, rigid punch gradually with board preform contact, form local drawing, bring about stress concentration, appear local neck shrinks phenomenon [4, 10] . Want reasonable allocation to figuration of component part of body of a flight of stairs board the flow of preform, normally steel punch figuration uses many second take shape, and it is OK to use take shape of agglutinant medium pressure one pace take shape, match a relation through optimizing those who control edge force and pressure of agglutinant medium infuse, control plate makings flows, precision of figuration component dimension is tall, exterior quality is better. The component part of body of a flight of stairs that uses the material of figuration of agglutinant medium pressure to be antirust aluminium is shown 5 times like the graph, although what use aluminium alloy outspread rate and tensile strength inferior, spring back is bigger, but thick to the wall for 1.
The figuration component of 0mm, the wall is large distributing relatively even, dimension precision is taller. The component of organic and transparent material of figuration of agglutinant medium pressure is shown 6 times like the graph, it is to ply 1.
The preform of 0mm, can achieve older rate be out of shape, the component after be out of shape still has very good transparency, overcame other figuration method to produce the defect of adverse effect to transparency. The distinct advantage of figuration of agglutinant medium pressure is model face curvature change is big, cannot integral figuration is made, only the figuration of component part whole at solder of fission figuration group offerred have the aid of condition, raised utilization reliability and reduced process. If the graph is shown 7 times,change of unit dimension diameter compares component part of large abnormity curved surface, original production method is first fission figuration, combine next solder. Figuration of agglutinant medium pressure but whole figuration, profound change of spare parts wall is minor. Process of figuration of agglutinant medium pressure board preform falls in action of tangential and agglutinant adherent stress, conduce to preform is flowed into and fill up curvature changes bigger model antrum. Tangential and agglutinant adherent stress rises along with the accretion of agglutinant medium pressure, to the figuration of member of different intensity board, can control its bulk through agglutinant medium pressure. Nextpage4 agglutinant medium easily sealed and form can dominate high-pressured field the main technique index that agglutinant medium pressure is technology of figuration of agglutinant medium pressure, obtain higher pressure to be able to undertake controlling in figuration process, it is the requirement that figuration of spare parts of plank of contented and different intensity and project change application. As a result of agglutinant medium but fluidity, inside the look storehouse that process of figuration of agglutinant medium pressure is in the agglutinant medium of constant pressure condition to must place Yu Mi to seal, can mix with infuse discharge a system to join in order to be opposite of figuration board preform to load and uninstall. Accordingly, should consider agglutinant medium at least look storehouse and board storehouse of look of preform, agglutinant medium and infuse and discharge the interfacial seal between the system problem. Because the half solid state of agglutinant medium is characteristic, compare with hydraulic forming, interfacial seal comes true more easily, this needed higher agglutinant medium pressure to offer possibility to obtain and control figuration place. Carry an interface to the circle, use homebred and sealed cell, actuating pressure of the biggest figuration already achieved 160MPa; Carry interface of large size rectangle to be not a circle, use data of homebred low cost, on the dimension interface of 800mm × 80mm, actuating pressure of the biggest figuration already achieved 80MPa[11-13] . Reachs technical target was figuration of spare parts of plank of high strenth, complex form and industrial application to offer a condition, the project influences the flight parts of an apparatus such as axis of gush of the eddy fan that satisfies a development completely, eddy, eddy, punch applied need. Because pressure control or figuration fail,the agglutinant medium that spill over can reclaim, nonexistent pressure is controlled or figuration failure leak splatters the problem that creates manufacturing site to be polluted apparently. Foundation and application study 1 plank is agglutinant the bulging of agglutinant medium pressure of LY12CZ of sex of medium pressure figuration and contrast of hydraulic pressure bulging experiment to make clear as a result, height at ultimate load of test specimen of bulging of agglutinant medium pressure rose 12.
2% (like the graph 8 are shown) , it is better that meet an emergency distributings [13-14] . Al6111-T4 material is agglutinant medium pressure bulging and bulging of rigid hemisphere punch are finite yuan the analysis shows bulging of agglutinant medium pressure was improved thick the uniformity that distributings to meet an emergency, if the graph is shown 9 times (μ is coefficient of friction)  . The element such as the agglutinant and adherent force of agglutinant medium and agglutinant medium viscosity, pressure is concerned, agglutinant and adherent force is right bulging of agglutinant medium pressure of the influence of reduction finite yuan the analysis makes clear (show 10 times like the graph) , as agglutinant medium viscosity elevatory, reduction is reduced; After viscosity is worth certainly more than, decrease thin serious instead [13-14] . Viscosity option is very accordingly important. Pratt of United States of 2 application research&Whitney company (Boeing) manufactured component part of the wainscot inside nozzle (Nozzle Inner Panel) material is Inconel718SPF, the wall is large for 0.
76mm. This company and American Ohio establish university collaboration, while to plank of alloy of nickel radical high temperature figuration makes a gender consider, to aluminium alloy (wait like 6061-O, 6111-T4, 2008-T4) , the figuration of agglutinant medium pressure of AKDQ of dark strong steel and excel in steel made a gender have thorough research. In American national defence advanced research plans bureau (Defense Advanced Research Projects Agency, DARPA) support and aid financially below, pratt&Whitney company (Boeing) established university collaboration to develop forming machine of pressure of two acting agglutinant medium with American Ohio, its tonnage is 6000kN respectively (generation) with 13000kN (the 2nd generation) , the application that is technology of figuration of agglutinant medium pressure thereby and thorough research provided very good hardware basis [16-18] . Home, group of task of author of Harbin Institute of Technology developed alloy of nickel radical high temperature large size, ultrathin wall is large light quantify figuration of component part whole; Aluminium alloy is bigger component of thin wall of form of fall a flight of stairs is close wait for the research such as mural thick figuration, obtained certain revolutionary positive result, solved aerospace to create some key problem of the technology, already accredit invents patent 7, already applied at the aircraft development such as axis of gush of eddy fan, eddy, eddy, punch. The component part of curved surface of abnormity of alloy of some high temperature that integral figuration makes, welding line amount decreases 75% , production working procedure reduces 80% above. Component part of manufactures sex of function of large size high accuracy, asymmetrical component of heat insolation of local big drop is already successful with Yu Mou aircraft. The forming machine of pressure of 6500kN agglutinant medium of own research and development already realized a project to turn application [6-13, 19-24] . Conclusion and look into (1) the characteristic that figuration of agglutinant medium pressure uses place of new-style punch stuff to have, it is difficult to be producibility of thick uniformity of board member wall, complex form, high strenth and low plasticity treatment plank but quality of figuration production sex, surface and decrease heavy light quantified the problem that waits for aerospace board member to make an attention to offer new settlement way. (2) application of figuration of agglutinant medium pressure shows this skill as a result to difficult be out of shape large component part of complex form, Baobi and ultrathin wall makes board of the respect cannot replace a gender, already was in development of aircraft of axis of gush of eddy fan, eddy, eddy, punch implementation project turns application, indicate the huge advantage of this technology and applied potential. (3) figuration of component of component of curved surface of abnormity of complex to the aircraft three-dimensional axes, irregular curved surface, can make full use of the characteristic of figuration of agglutinant medium pressure, contented producibility and raise figuration to produce quality, reduce cost, overcome product measure precision low, quality (especially the surface) poor problem. (4) the important method that figuration of pressure of really agglutinant medium uses numeric copy. How can the characteristic of figuration of agglutinant medium pressure send brandish and specific application adequately, numerical value is emulated can give out quickly in the light of specific issue solution, what research and development sticks size distortion of figuration of sexual medium pressure and plank coupling is finite yuan of analysis software, it is this one technology can the main factor that faster, better land uses extensively. CNC Milling CNC Machining