Continuous casting, continuous solling production method and apparatus for stainless steel seamless composite pipe

Abstract

The invention relates to stainless steel seamless composite tube continuous casting tandem rolling producing method and device. Its features are that it uses two parallel vertical type hollow bloom continuous casting machines to directly cast out stainless steel composite hollow bloom, cut the high temperature tube blank into given size, and put into sloping bottom die casting furnace to adjust temperature; then the tube blank is taken out to sent into roller trio planet skew rolling mill, tension reducing mill, sizing mill to form finished tube; the finished tube is processed cooling, strengthening, scaling, packing. The invention can shorten production flow, reduce device investment, save energy sources, and increase production efficiency and steel tube rolling quality.

Description

technical field [0001] The invention relates to a stainless steel seamless composite pipe continuous casting and rolling production method and equipment, which belongs to a near-network continuous casting and rolling technology in the production process of different metal seamless composite pipes in the field of metallurgy. The present invention is characterized in that continuous casting composite hollow tube blanks are used to realize on-line heat preservation and soaking, and then the tube blanks are directly sent to a three-roll planetary skew rolling mill, tension reducing machine, and sizing machine to continuously produce finished seamless composite tubes. . By adopting the method, the process of piercing the solid billet and heating the billet twice can be omitted, and the near-net shape continuous casting and rolling for the production of the seamless composite steel pipe can be finally realized. technical background [0002] Stainless steel, a special metal materi...

AI Technical Summary

Problems solved by technology

Moreover, the domestic and foreign market demand is increasing day by day, but the rare metals nickel, chromium, and titanium required for the production of stainless steel are less and less, and their prices are becoming more and more expensive, which greatly restricts the production and application of stainless steel. To solve this contradiction, people began to research and explore stainless steel composite materials

At present, stainless steel composite plates, strips, and pipes appearing in some application fields are produced under this market background, but so far, there are still few stainless steel composite materials in the market, especially stainless steel seamless composite pipes. Less than that, one of the important reasons is that the production process of seamless composite pipes is difficult and complicated. Although several new methods have appeared in the production field in recent years, such as centrifugal casting, mechanical surfacing, disposable core rod method and spray casting Both methods can produce stainless steel seamless composite pipes, but these existing production methods have common shortcomings: that is, the production process is interrupted, there are many manual operations, the production efficiency is low, the cost is high, and it is difficult to achieve continuous, large-scale and Automated manufacturing

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