Preparation method for double roller thin strips of clad plate strip

A composite strip and twin-roll thin strip continuous casting technology, which is applied in the field of twin-roll thin strip continuous casting, can solve the problems of high labor intensity, long production cycle and complicated process, so as to improve the density and internal quality and reduce porosity And the formation of cracks, the effect of short process flow

Inactive Publication Date: 2014-12-31
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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.

Method used

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  • Preparation method for double roller thin strips of clad plate strip
  • Preparation method for double roller thin strips of clad plate strip

Examples

Experimental program
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Effect test

Embodiment 1

[0032] The thickness of the middle strip is 2mm, and the thickness of the composite metal on both sides is 1mm. In the actual composite process, first adjust the roll gap between the composite metal and the composite metal, and then start the control roller of the middle strip to make it pass The crystallization roller, the intermediate strip is preheated at 550°C, during which the molten metal in the tundish starts to be cast, and the threading speed of the intermediate strip, the liquid level and the superheat of the composite metal liquid are controlled within the following ranges: the threading speed: 45m / min, Composite metal liquid level: 80mm, superheat: 23°C.

Embodiment 2

[0034] The thickness of the middle strip is 3mm, and the thickness of the composite metal on both sides is 1.5mm. In the actual composite process, first adjust the roll gap between the composite metal and the composite metal, and then start the control roller of the middle strip to make it pass through. After passing through the crystallization roller, the intermediate strip is preheated to 600°C. During this period, the molten metal in the tundish starts to be cast, and the threading speed of the intermediate strip, the liquid level and superheat of the composite metal liquid are controlled within the following ranges: Strip threading speed: 60m / min , Composite metal liquid level: 110mm, superheat: 26 ℃.

Embodiment 3

[0036] The thickness of the middle strip is 5mm, and the thickness of the composite metal on both sides is 2.5mm. In the actual composite process, firstly adjust the roll gap between the composite metal and the composite metal, and then start the control roller of the middle strip to make it pass through. After passing through the crystallization roller, the intermediate strip is preheated to 700°C. During this period, the molten metal in the tundish starts to be cast. The threading speed of the intermediate strip, the liquid level and superheat of the composite metal liquid are controlled within the following ranges: Strip threading speed: 80m / min , Composite metal liquid level: 150mm, superheat: 33 ℃.

[0037] 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 ...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/06
Inventor 任三兵樊俊飞方园于艳
Owner BAOSHAN IRON & STEEL CO LTD
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