High-hardness, high-tenacity, high-chrome-white cast iron with extended service life and method for manufacturing the same

摘要

The present invention improves impact toughness while maintaining a high abrasion resistance and hardness by controlling the carbide volume ratio (CVF), the amount of retained austenite, the size of process carbides, and the aspect ratio of process carbides, Chromium white cast iron and a method of manufacturing the same.;The high hardness, high toughness chromium white cast iron of the present invention preferably contains at least 0.2 wt% of Ti, which is an element for improving the process carbide, or preferably contains 1 to 2 wt% of Cu for austenite stabilization and inhibition of process carbide decomposition Or both of the two elements.;In addition, the present invention can heat-treat the high chromium white cast iron alloy containing Ti and / or Cu at a high temperature of 1100 to 1200C to produce a high hardness, high toughness chromium white cast iron.