Preparation method for double roller thin strips of clad plate strip

Abstract

The invention discloses a preparation method for double roller thin strips of a clad plate strip. A pair of pinch rollers and a pair of positioning rollers are arranged above and below two crystallization rollers rotating oppositely, namely double rollers, wherein a flow distribution device is also arranged above the double rollers; an outlet of the flow distribution device corresponds to a clearance formed between the double rollers; an intermediate plate strip enters a part between the double rollers through the rotating pinch rollers and then enters a part between the positioning rollers below the double rollers; molten metal to be clad is poured in the flow distribution device positioned above the crystallization rollers; the melting point of the molten metal is lower than that of the intermediate plate strip; the molten metal fills the clearance formed by the two crystallization rollers by virtue of the flow distribution device; molten pools are respectively established on one side or two sides of the intermediate plate strip; the outlet end of the flow distribution device is inserted to a position, which is 10-20mm below the liquid level of the molten pool between the double rollers; by using the cooling action of the crystallization rollers and the intermediate plate strip, the molten metal is quickly solidified; the molten metal and the surface of the intermediate plate strip act together at the occluded position of the two crystallization rollers; molten metal solidifying layers are formed on one side face or two side faces of the intermediate plate strip, so the clad plate strip is formed.

Description

technical field [0001] The invention relates to the field of twin-roll thin strip continuous casting, in particular to a method for preparing a twin-roll thin strip of a composite strip. Background technique [0002] Composite materials are artificially compounded by matrix materials and composite materials by a special method. It gives full play to the physical and chemical properties of the materials and forms a new type of material with excellent comprehensive performance. It is the fastest growing and most promising in the field of materials today. As a new discipline, the development of composite materials has been listed as a key plan all over the world. [0003] In the process of research on composite materials, people have realized that the key to composite materials is the interface bonding between the matrix material and the cladding material. In order to achieve the technical requirements of good bonding strength and firm cladding, in addition to the necessary la...

AI Technical Summary

Problems solved by technology

[0008] The disadvantage of this patent is that during the solidification process of the metal solution, solidification occurs only on the surface of the metal parent strip, but not on the surface of the thin strip continuous casting crystal roll, which loses the characteristics of thin strip continuous casting, rapid casting and rolling

Large energy consumption, complex process, long production cycle, high labor intensity, high product cost, difficult production change, etc.

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