METHODS OF SPHEROIDIZING MEDIUM AND HIGH CARBON STEELS BY SEVERE PLASTIC DEFORMATION, APPARATUS FOR SEVERE PLASTIC DEFORMATION, AND SPHEROIDIZED MEDIUM AND HIGH CARBON STEELS PREPARED THEREFROM

摘要

The invention of the visualization method and high carbon steel with machined Jiangsu, Jiangsu device and thus the resulting visualization , relates to a high carbon steel, more specifically, the carbon (C) 0.40 to 1.60% by weight and chromium (Cr) 1.0 to 2.0% by weight of a high carbon steel, containing the step of charging the device with an asymmetrical die Jiangsu ; ECAP (Equal Channel Angular Pressing) by performing a process of shearing strain by deformation of 0.5 or more steps through the room temperature or heated, and the pressure of the carbon steel (pressing); Heat treating the middle and high carbon steel in the modified 700~900 ; And a method of manufacturing and high carbon steel in which visualization through the steps of cooling, Jiangsu device and thus relates to the resulting visualization and high carbon steel in. ; The visualization of high-carbon steel inner contact angle and diameter of the inlet and outlet using the adjusted die asymmetric transformation process by performing the same process that pressure is being simplified, there can be achieved in a short time by performing the spheroidizing annealing and cooling processes in sequence is economically advantageous to greatly reduce the manufacturing cost. In addition, the visualization of the produced cold-forged, high carbon steel has improved ability is applied to various machine parts are made.