Solid metal calcium ferrosilicon magnesium-rare earth alloy composite clad wire

Abstract

Disclosed is solid metal calcium ferrosilicon magnesium-rare earth alloy composite clad wire. The outer layer of the clad wire is a common steel belt with the thickness being 0.3-0.5 mm. A core layer comprises a rare earth-magnesium alloy powder layer, a middle protective layer and a solid metal calcium line, the solid metal calcium line is wrapped by the middle protective layer, the middle protective layer is wrapped by the rare earth-magnesium alloy powder layer, and the rare earth-magnesium alloy powder layer comprises ferrosilicon powder and rare earth-magnesium alloy powder. The mass ratio of the solid metal calcium line to the ferrosilicon powder to the rare earth-magnesium alloy powder is 1:1-2:1-5. The granularity of the ferrosilicon powder and the granularity of the rare earth-magnesium alloy powder are smaller than 3 mm. The alloy powder is added into microalloyed steel through a clad wire method so that the calcium and magnesium treatment process can be stable and high absorptivity can be obtained, and the current problems are well solved. In addition, the solid metal calcium ferrosilicon magnesium-rare earth alloy composite clad wire has the advantages of being longer in preservation time and more stable in yield, and has obvious economical benefits.

Description

technical field [0001] The invention relates to an alloy powder cored wire. Background technique [0002] my country's steel industry is at its peak in history. In the next few years, it is estimated that my country's annual steel output will reach 1.8 billion tons, and the cored wire market will reach more than 5 billion yuan. According to the statistics of the World Iron and Steel Association, in 2011, the total steel output of all countries in the world reached 1.6 billion tons, an increase of 15%; while China ranked first in the world with an output of 700 million tons. In addition, with the continuous advancement of science and technology, various projects Structural design tends to be high-parameter, lightweight and large-scale. The performance of steel materials requires higher strength and better toughness. Core-spun wire feeding processing technology plays an indispensable and important role in this. [0003] Obtaining products with higher purity and higher uniform...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a kind of solid metal calcium, ferrosilicon, magnesium rare earth alloy composite cored wire, by adopting the method of cored wire to join in microalloyed steel, can make calcium, magnesium treatment process stable and obtain higher Absorption rate, so that the current problems can be better solved