A kind of processing method of seamless pipe welding wire containing rutile flux core powder prepared by low carbon steel strip

Abstract

Disclosed is a method for fabricating a seamless tube welding wire containing rutile cored powders by a mild-carbon steel strip. The method includes that by weight, 30%-50% of rutile, 2%-5% of dehydrated feldspar, 5%-10% of silicon iron, 1%-8% of ferrotitanium, 5%-15% of manganese metal, 2%-5% of zircon sand, 3%-8% of mineral magnesia, 2%-6% of quartz, 0.5%-2% of zirconium metal and the balance iron powders are fully and uniformly stirred to form the rutile cored powders, and the rutile cored powders are stored in a feeding device for stand-by, the mild-carbon steel strip is rolled to form a U-shaped steel strip, the cored powders are filled in the U-shaped steel strip at a rolling speed of 2-10m / s, the filling rate is controlled within 14%-18%, then a seamed tube in the diameter of D is formed by rolling, a seamless tube welding wire tube blank is formed by on-line welding of a laser-beam welding machine or a high-frequency welding machine, the seamless tube welding wire tube blank is subjected to high frequency annealing at 500-1200 DEG C, then the diameter of the seamless tube welding wire tube blank is reduced by a cold-drawn machine to form a D1 seamless tube welding wire, and then the D1 seamless tube welding wire is copperized so as to form the seamless tube welding wire containing the rutile cored powders.

Description

technical field [0001] The invention belongs to the technical field of welding materials, in particular to a processing method for preparing a seamless pipe welding wire containing rutile core powder from a low-carbon steel strip. Background technique [0002] Seamed metal pipe welding wire or seamless metal pipe welding wire can be prepared by wrapping the flux core with metal tape. In terms of performance, seamless metal pipe welding wire is far superior to seamed metal pipe welding wire. Seamless metal pipe welding wire is mostly used in marine Engineering or manufacturing of high-tech industries such as large ships, but the processing method of seamless metal pipe welding wire has been kept secret and blocked by foreign welding material manufacturers. [0003] It is reported that seamless aluminum tube welding wire has been prepared in China. It uses smelted aluminum or aluminum alloy ingot, after homogenization annealing and peeling, it is filled with metal halide by do...

AI Technical Summary

Problems solved by technology

This processing method can only be used for metals with low melting point and good plasticity such as aluminum, and is not suitable for metals with high melting point and poor plasticity such as steel

[0004] It is also said that there is a processing method of vibrating and adding powder to produce seamless carbon steel pipe welding wire, but the biggest problem with this processing method is that continuous production cannot be realized, resulting in low production efficiency, and the length of the processed welding wire is limited. Powder layering is prone to occur, which will lead to uneven composition of the welding wire and affect welding quality

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