Study Of Cold Ring Rolling Process Of The Outward Trapezia Ring

Cold ring rolling is an advanced plastic forming technilogy with cintinuous revolving local deformation,which has signifiant advantages in labor saving, energy, conservation, material saving, high efficient, low cost and low noise. Hot ring rolling is sufficiently advanced of the ring rolling technic which is matching to the rectangle section rings or the rings of symmetrical, the study of the cold ring rolling for rings of dissymmetrical section is just at the beginning. So this paper is about the study of the forming disciplinarian of the cold rolling of outward trapezia rings, EEM and technics of the outward trapezia rings is designed .The technical parameters is designed and proofread is according to the theory of ring rolling and the base of the study of the cold rolling, the technics of the cold ring rolling for rings of dissymmetrical section is put forward, the characteristic of the rolling process is analyzed,. The mail influence of the ring rolling process is analyzed, and than the rational technical parameters, the shape and domention of the mould and the pre-parts are instituted.Dynamical EEM method was adopted in the cold Rolling simulation analysis of he outward trapezia ring. Base on the EEM simulation theory, the cold ring rolling process of the outward trapezia ring was analyzed by the three-dimensional dynamica EEM simulation method. The floating disciplinarian of the material and the bug which is likely to appeared in the process of the cold ring rolling is analyzed., the bugs was finally avoided or minished by modifying the technical parameters.The mould and the technical parameters was designed to matching the machine of the type of D56G90 ring rolling machine . The key point of the design of the mould was advaned. Eligible ring are gained by the experimentation base on the design, which indiacte that the technic of this paper reseached was capable, and the result of the EEM simulation was right. Reference is offered for the manufacture of the rings of this kind.