EXPANSION OF TECHNOLOGICAL POSSIBILITIES OF THE SEDIMENT PROCESS IN APPLICATION RINGS BY MEANING OF CONTACT FRICTION CONDITIONS

A. V. Smyrnykh, S. S. Strugov, V. A. Ivanov, M. D. Tarkalenko

Abstract


The plastic flow of material in the course of sedimentation in the underlay rings under the conditions of contact friction by various kinds of lubrication is investigated in the context of expanding the technological capabilities of the process to realize the possibility of manufacturing a wider range of forgings. The dependence of the shape change in the combined friction of the specimens was studied to increase the degree of extrusion of the hub and to reduce the barrel size in order to reduce the rate of flow and the possibility of reducing the allowance for forging. It has been found that when the coefficient of contact friction is increased by applying lubricant to the end of the ring and the friction in the tool cavity is reduced, the degree of extrusion of the hub increases. It is determined that an increase in contact friction at the ring surface reduces the growth rate of the diameter of the critical surface and contributes to a more favorable filling of the forging hub, thereby increasing the technological capabilities of the operation.

Keywords


sediment in bed rings; combined friction; forging

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DOI: http://dx.doi.org/10.14529/met180210

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