Solid-liquid phase continuous compounding device for stainless steel compound plate slabs

Abstract

The invention discloses a solid-liquid phase continuous compounding device for stainless steel compound plate slabs. By adopting the device, stainless steel compound plate slabs can be produced continuously with high efficiency, low cost and high quality. The solid-liquid phase continuous compounding device for stainless steel compound plate slabs comprises two uncoilers, two wire brushes, guide rollers, casting systems, protective atmosphere heating systems, crawler-type crystallizers and cooling separation systems; the two uncoilers are arranged in the feeding position in a mutually staggered manner; the two wire brushes are arranged behind the uncoilers; the guide rollers are arranged behind the wire brushes; the protective atmosphere heating systems are arranged below the guide rollers; the casting systems are arranged on two sides of the protective atmosphere heating systems; the crawler-type crystallizers are arranged below the casting systems; and the cooling separation systems are arranged at the bottom. By adopting the device, not only are thin plate slabs of single metal material can be produced, but also compound thin plate slabs of different metal materials can be produced continuously; and the device is particularly suitable for continuous production of stainless steel composite plate slabs.

Description

technical field [0001] The invention relates to a metal composite material production device, in particular to a solid-liquid phase continuous composite device for stainless steel composite slabs. Background technique [0002] Stainless steel composite plates usually use stainless steel as the surface material, ordinary structural steel as the base material, and combine them in various ways to form multi-layer composite plates with different materials. It has both the rust resistance and corrosion resistance of stainless steel and ordinary structural steel. The advantages of high strength and low price have incomparable advantages in terms of cost performance compared with pure stainless steel of the same specification. Therefore, stainless steel clad plates have been highly valued by people since their birth. [0003] At present, the production of stainless steel clad slabs is still dominated by solid-solid phase cladding, and explosive welding and vacuum diffusion welding ...

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Problems solved by technology

The device and method for preparing stainless steel composite slabs proposed by the above-mentioned patent documents also have the following disadvantages: (1) the double mold continuous casting process has the problems of temperature control and protection of the upper casting slab and the matching of the casting speed of the upper and lower molds, That is to say, it must be ensured that the upper billet forms a solid billet before entering the lower molten pool, and no oxide scales can be formed on the surface. At the same time, the casting speeds of the upper and lower molds must match, otherwise serious quality defects will occur and it will be difficult to cast composite plates (2) Although the belt-type continuous casting machine solves the problem of sliding friction between the casting slab and the mold, it is actually difficult to use the rotating metal belt as the wall of the mold, because when the metal belt is thick Difficult to bend, it is difficult to withstand the erosion of high temperature metal when the metal strip is thin

In addition, this type of device has the same problems as the upper slab temperature control and surface oxidation prevention as the double mold continuous casting device

(3) Due to the small crystallization space of the liquid metal in the twin-roll casting process, the side seal and the end face of the roll are always in a state of dynamic friction, so there are serious side seal wear, liquid metal and roll bonding, and only thin-gauge castings with a relatively small thickness can be produced. Billet and other issues

(4) The electromagnetically controlled bimetallic continuous casting process is the simplest method for producing composite slabs, but it is very difficult to implement the composite interface by using electromagnetic force. Surface quality problems due to sliding frictional resistance between molds

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