Toughening processing method of hard phase Fe3C in plain white cast iron

Abstract

The invention relates to the common white cast iron field, disclosing a method for the malleableizing treatment on a hard phase of common white cast iron Fe3C. The common abrasion resistant white cast iron which is subjected to the hard phase Fe3C malleableizing treatment is suitable for micro and low impact stress operating conditions and can be used to prepare corresponding abrasion resistant parts such as ploughshares, microsections and guide plates. The malleableizing treatment method comprises the following steps: firstly, materials of the common white cast iron including scrap steel, pig iron, ferrosilicon and ferromanganese are determined, and by taking the total weight of the materials of the common white cast iron as a reference, ferrochromium, ferromolybdenum and the materials of the common white cast iron are weighted respectively according to 1.0 to 10 percent of Cr and 0 to 3.5 percent of Mo; secondly, the materials of the common white cast iron including the scrap steel,the pig iron, the ferrosilicon and the ferromanganese are orderly added in a furnace for smelting, after melting down, aluminum wires, the weight of which against the weight of molten iron is 0.01 percent, are used for deoxidation, and the ferrochromium and the ferromolybdenum are added in for melting down; finally, after the melting down of the molten iron, the molten iron is subject to standing, slag removal and forming, and the malleableizing treatment is completed.

Description

technical field [0001] The invention relates to the field of common white cast iron, in particular to a hard phase Fe in common white cast iron 3 Toughening treatment method of C, hard phase Fe 3 C toughened ordinary white wear-resistant cast iron is suitable for micro and low impact stress conditions, and is used to prepare corresponding wear-resistant parts such as plowshares, grinding discs, and guide plates. Background technique [0002] Wear and tear is common in many industrial sectors such as metallurgy, mining, machinery, electric power, etc., and has become an important cause of equipment component failure or material damage, and is also one of the reasons that cause the most economic losses. At present, high-chromium white cast iron is widely used, while ordinary white cast iron is less used. One of the main reasons is that the anti-wear hard phase Fe in the latter structure 3 C has lower hardness and poor toughness, resulting in poor wear resistance of the mater...

AI Technical Summary

Problems solved by technology

[0004] About how to increase the hard phase Fe in ordinary white cast iron 3 The toughness of C has not been reported at home and abroad