EVALUATION OF DEFORMABILITY OF MATERIAL OF PREPARATIONS IN DIRECT AND REVERSE EXTRACTION BY ROLLING STAMPING METHOD

The article presents the results of development and research various technological schemes process stamping by rolling cylindrical conical rolls to obtain complex profile workpieces. It is shown that achievement significant dimensions elements workpiece possible providing a directed flow metal changing relative position roll workpiece. most effective operations are landing, settling, unloading, reverse direct extrusion. paper focuses on analysis extrusion blanks with developed, including thin-walled elements. Since capabilities depend deformability material, stress-strain state workpieces was performed using method grids, hardness measurement microstructural analysis. main result construction ways deform particles material in coordinates "deformation intensity - stress index". Zones deformed conditions "rigid" established, therefore for these zones metals assessed criteria phenomenological theory. In addition, assessment also areas maximum degree deformation material. manufacture workpiece, operation extrusion, accompanied appearance contact stresses. To prevent from being pushed out forming constant thickness, support rollers should be provided. case increase stresses requires application additional measures strength tool.