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Pre-forming of large and complex shape forging process simulation upsetting top

Asymmetric gathered left iliac cavity, contrary to the expected results may be returned to families in the smaller part of the deformation holding the aspect ratio. 4 Discussion and Conclusion The above results and analysis can be seen heading in the top of the eccentric head of the displacement of large metal particles, and the strain distribution is very uneven, from the deformation of the grid, the general case, Kyrgyzstan from the lower left corner to the shear distortion of the same cell more serious, with the upper right side of the grid density is also the largest. When the value is large, the most serious distortions in the upper left corner of the grid. See also the case from the equivalent strain distribution, the most serious distortions in the grid, where such technology is also the largest strain, concurrent drawer difficult deformation zone. 1lZ head Zhu Kun iodine system device (ram) when the field 10 0,0,5 waist 11 5 = O and mouth shape deformation space of a week cover (the old structure) resistance comparison (under the new node {0 hook .5) where the metal is the most difficult to fill the bottom left of the concave fillet, the follow-up work on the 1BI billet step to take certain measures to improve the flow of metal to the situation where the well repeatedly used against freedom of forging deformation to avoid missing when the final mole within the phenomenon. Meanwhile, in allowing the case to increase the shank at the head of the transition radius convex mold to facilitate the flow plate is the trend to the concave angle. In addition, the first flattening and then use the show went so far as the eccentric head of the top heading, the last pole Department of aid programs is also worth considering the system blank, this will be good for dispersing large deformation head to reduce the power of the top heading, and short shank to facilitate operation of the top heading. Ministry in the allocation of long-rod may also leave aside gradient mode. Effect of friction on the forming great condition, good resistance to lubricating not only greatly reduce the workpiece deformation, and to die in a given material structure produces the punch along the direction of the surface to the broadening of fine move, on the eccentric upset head is very beneficial, in does not increase the degree of deformation of materials under accelerated migration, but also bound to benefit hard disk is filling the final shape of the concave die structure design, it is necessary to pay attention to technology needs, but also take into account the possibility of actual production. It is noteworthy that the mold structure changes have a major impact on the shape. Compared with the second die structure operator sets the actual production, but the removal of rigid constraints, the metal will flow down the right side of the gap produce some flash mode. In addition to the workpiece and punch reduce the friction between the contact surfaces with possession of this flow step, the step in the follow-up work and other methods can be used to correct the wrong move. The results show that the bar end the top of the initial inclination on the eccentric way of metal flow during upsetting or deformation resistance, impact is not large. System is a series of eccentric billet upsetting top step of a work more important than the typical working steps, the formation of preformed blanks of the ten workers is the result of step with each other, therefore, the implementation of this article is just one aspect of numerical reflection large-scale deformation forging blank making difficult the design and analysis methods, which can be used for the actual production of a smaller investment and provide valuable advice and guidance to prevent blindness, so targeted, so it is a useful and meaningful exploration. Against the computer simulation experiment, and the \But the physical simulation has a strong practical, if the numerical simulation for the proposed Arab-Israeli issues discovered or re-use physical simulation to experiment. Results will enable the two-phase units,[link widoczny dla zalogowanych], refer to each other and jointly serve the purpose of process and die design,[link widoczny dla zalogowanych], so the perfect unity of quantitative and qualitative. This paper analyzes the use of a more ideal environment and the deformation of the deformation parameter, there is some discrepancy with the actual, if the deformation of materials, using real, true die size, and consider non-steady-state temperature distribution and the proposed three-dimensional finite element model and algorithm, although the AO value of the simulation process more complex. However, the analysis will be more reliable,[link widoczny dla zalogowanych], information is also larger,[link widoczny dla zalogowanych], you can analyze more continuous deformation of working steps. This is what every plastic deformation of the joint efforts of researchers and ten goals. References lKobaFashlS-port j. MetalForming flutter dtheFiniteElementMeth. d. OxfordUniversityPre ~ s. Inc. 19892 Young summarized constant editor. Left forging technology. Xi'an, Northwestern Polytechnical University Press Du ,[link widoczny dla zalogowanych],1986-226 ~ 2283AltanT other bats, Hesuo translation. Forging a modern equipment, materials and processes. I National Defence Industry Press Beijing. 1982.15O4 Zhu understand. Debate pull plastic forming process with finite element numerical simulation [PhD thesis]. Tong University, Shanghai Air, 1994 Received 17 May 1995 Japanese Journal of notification is not set in the post office on the \Publication price of 3.5 yuan in 1996, the annual 21 yuan. 16_, \
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