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

Abstract

The invention relates to an alloy core-spun yarn. A titanium-silicon nitride alloy core-spun yarn comprises a core layer and a sheet steel layer which is wrapped on the outer part of the core layer, wherein a net-shaped supporting layer made of steel or iron is arranged between the core layer and the sheet steel layer; the core layer comprises a titanium-silicon nitride alloy powder layer, a middle protective layer and a solid metal calcium yarn; the solid metal calcium yarn is wrapped by the middle protective layer; the middle protective layer is wrapped by the titanium-silicon nitride alloy powder layer; a mass ratio of the solid metal calcium yarn to the titanium-silicon nitride alloy powder layer is 1: (2-5); and the titanium-silicon nitride alloy powder layer is made of titanium-silicon nitride alloy powder with a grain size of 3 mm or smaller. Alloy and calcium are added into micro-alloyed steel through a method of adopting the core-spun yarn, so that the problem that a recovery rate is low can be solved; and meanwhile, compared with a conventional solid metal calcium yarn, the alloy core-spun yarn has the advantages of being higher in yield, longer in storage time and more stable in yield, and has remarkable economic benefits.

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 kind of solid metal calcium titanium nitride silicon alloy powder composite cored wire, by adopting the method for cored wire to add alloy and calcium in the microalloyed steel, not only can solve the problem of low recovery rate, but also Compared with the conventional solid metal calcium wire, the yield is higher, the storage time is longer, the yield is more stable, and it has significant economic benefits