Titanium-silicon nitride alloy cored wire containing rare earth, calcium, barium and molybdenum

Abstract

The invention relates to an alloy cored wire, in particular to a titanium-silicon nitride alloy cored wire containing rare earth, calcium, barium and molybdenum. The titanium-silicon nitride alloy cored wire containing rare earth, calcium, barium and molybdenum comprises a core layer and a steel skin layer wrapping the core layer. The core layer is titanium-silicon nitride alloy powder which contains rare earth, calcium, barium and molybdenum and has the particle sizes below 3 mm. A netty supporting layer made of steel or iron is arranged between the core layer and the steel skin layer. The titanium-silicon nitride alloy powder containing rare earth, calcium, barium and molybdenum is prepared from, by mass, 1.0%-2.5% of Al, 10%-25% of N, 2.5%-5.0% of Mn, 1.0%-2.5% of Mg, 25%-40% of Ti, 25%-35% of Si, 5%-10% of Ca, 0.5%-1.0% of Mo, 0.5%-1.0% of Ba, 1.0%-2.0% of rare earth elements, no more than 0.1% of P, no more than 0.1% of S, and the balance Fe. The alloy powder is added into microalloyed steel through a cored wire method so that the problem of low recovery rate can be solved, consumption of ferrosilicon and ferromanganese can be reduced, application of titanium-silicon nitride and the titanium-silicon nitride cored wire is developed, and remarkable economic benefits are achieved.

Description

technical field [0001] The invention relates to an alloy cored wire. Background technique [0002] my country is a big country of iron and steel, but the quantity and variety of high-quality steel account for a relatively small proportion, which not only cannot meet the requirements of my country's economic construction and national defense construction, but also causes a serious waste of resources, resulting in continuous increase in the cost of iron and steel smelting. The fundamental way to solve the above problems is to adopt the new metallurgical discipline that appeared in the 1970s—microalloying technology, that is, adding a small amount (0.001%-0.1%) of alloying elements to the steel can improve the properties of the steel (such as high Strength, high toughness, good weldability and corrosion resistance) have been significantly improved, while saving precious alloying elements to reduce costs, which is an important sign of the transformation from traditional steel pr...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a cored wire containing rare earth, calcium, barium, molybdenum titanium nitride silicon alloy, which can not only solve the problem of low recovery rate, but also It can also save the use of ferrosilicon and ferromanganese, and develop the application of titanium silicon nitride and its cored wire alloy, which has significant economic benefits