Solid calcium metal, ferrosilicon and titanium-silicon nitride alloy powder composite core spun yarn

Abstract

The invention relates to alloy core spun yarn, in particular to solid calcium metal, ferrosilicon and titanium-silicon nitride alloy powder composite core spun yarn. The solid calcium metal, ferrosilicon and titanium-silicon nitride alloy powder composite core spun yarn comprises a core layer and a sheet steel layer wrapping the outside of the core layer; a netlike supporting layer made of steel or iron is arranged between the core layer and the sheet steel layer; the core layer comprises a ferrosilicon and titanium-silicon nitride alloy powder layer, a middle protection layer and a solid calcium metal line; the solid calcium metal line is wrapped with the middle protection layer; the ferrosilicon and titanium-silicon nitride alloy powder layer wraps the middle protection layer and is composed of ferrosilicon powder and titanium-silicon nitride alloy powder of which the particle sizes are 3 mm or smaller; and the mass ratio of the solid calcium metal line to the ferrosilicon power to the titanium-silicon nitride alloy powder is 1:(1-2):(2-5). Compared with common solid calcium metal lines, the solid calcium metal, ferrosilicon and titanium-silicon nitride alloy powder composite core spun yarn has the advantages that the yield is higher, the preservation time is longer, the yield is more stable, 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

[0007] The purpose of the present invention is to provide a composite cored wire of solid metal calcium, ferrosilicon, titanium silicon nitride alloy powder, by adopting the method of cored wire to add alloy and calcium in the microalloyed s