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Method for sealing lancing type crystallizer copper pipe using electromagnetic pressure

A crystallizer copper tube and electromagnetic technology, which is applied in the field of slotted molds for electromagnetic soft contact continuous casting, can solve the problem that the sealing medium cannot be connected with the copper tube, etc., and achieve low manufacturing cost, high connection strength, and convenient operation Effect

Inactive Publication Date: 2007-10-31
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for sealing the copper tube of the slit mold by using electromagnetic pressure, so as to solve the problem that the sealing medium such as ceramics and the copper tube cannot be connected, and to meet the insulation requirements of the high-frequency electromagnetic field on the copper tube of the mold It has the advantages of high rigidity, high strength, long life, high magnetic penetration efficiency, etc., and is suitable for the requirements of industrial production.

Method used

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  • Method for sealing lancing type crystallizer copper pipe using electromagnetic pressure
  • Method for sealing lancing type crystallizer copper pipe using electromagnetic pressure
  • Method for sealing lancing type crystallizer copper pipe using electromagnetic pressure

Examples

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Embodiment 1

[0018] Embodiment 1, at first select Ag-Cu crystallizer copper tube 1 for use, adopt the middle slit form to implement slit 2 to Ag-Cu crystallizer copper tube 1, the width of slit 2 is 0.6mm, and the end of slit 2 is processed as Rounded corners (diameter equal to slit width). The sealing medium 3 is ZrO 2 Ceramic sheet, ZrO 2 The ceramic sheet is an insulating and non-magnetic medium, with a temperature resistance higher than 1000° C., a compressive strength greater than 800 MPa, and a thermal expansion coefficient similar to that of the crystallizer copper tube 1 . ZrO 2 The ceramic sheet is processed into a thin slice with a thickness of 0.54-0.58mm, and the two ends of the thin slice are processed into a circle, and the surface roughness of the thin slice is between Ra12.5-50um after roughening. In order to prevent the ceramic sheet from loosening or falling off after being inserted into the slit 2 or leaving air in the slit 2, apply Vaseline to the entire crystallizer...

Embodiment 2

[0021] Embodiment 2, using red copper magnetically driven cylindrical ring 7 and polyurethane cylindrical ring 8 to transmit electromagnetic pressure to crystallizer copper tube 1 to make it undergo shrinkage plastic deformation, red copper magnetically driven cylindrical ring 7 is close to electromagnetic working coil 5, polyurethane Cylindrical ring 8 is close to crystallizer copper pipe 1 and has the same height as electromagnetic working coil 5 . Other structures and electromagnetic parameters are exactly the same as those in Embodiment 1.

[0022] The invention is simple in operation and reliable in sealing, and is suitable for square billets, round billets, whole-body slits, upper-end whole-body slits or middle slits, and the slits of electromagnetic soft contact continuous casting crystallizer copper tubes 1 with a slit width of 0.2 mm to 10 mm 2 sealed. At the same time, all the plastic deformation and sealing of the present invention work under the condition close to...

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Abstract

The invention discloses a sealing method of kerf-typed crystallizer brass pipe, which comprises the following steps: filling the sealing dielectrics in the kerf part of kerf-typed crystallizer brass pipe; setting electromagnetic working coil on the periphery of crystallizer brass pipe and next to the brass pipe; connecting the electromagnetic working coil with the high-power electromagnetic pulse current generation power; setting inside core mould in the brass pipe; outputting strong pulse current from high-power electromagnetic pulse current generation power; generating alternating magnetic field when the pulse current passes the electromagnetic working coil; deforming the brass pipe of diameter-reducing plasticity through electromagnetic pressure; forming sealing combination of brass pipe and sealing dielectrics.

Description

(1) Technical field [0001] The invention relates to a slotted crystallizer for electromagnetic soft contact continuous casting, in particular to a method for sealing a copper tube of the slotted mold. (2) Background technology [0002] There are two main types of electromagnetic soft contact continuous casting mold copper tubes: one is to cut a number of slits (hereinafter referred to as slits) on the mold copper tube in a certain way, so that the high-frequency electromagnetic field can reach the surface of the molten steel through the slits, The material of the crystallizer copper tube is exactly the same as that of the traditional crystallizer. Another type of mold copper tube does not cut slits, but divides the copper tube into upper and lower sections. The upper section near the electromagnetic field action area is made of high resistivity and high thermal conductivity materials, and the lower section is still made of copper tubes similar to ordinary continuous casting ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/10
Inventor 侯晓光张永杰
Owner BAOSHAN IRON & STEEL CO LTD
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