Method and equipment for preparing semisolid fused mass of ferrous material

A technology for iron and steel materials and a preparation device is applied in the field of preparation of semi-solid melts of iron and steel materials, and can solve the problems of high manufacturing cost and inconvenience in popularization and application.

Inactive Publication Date: 2004-03-10
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The manufacturing cost of this method is relatively high, and it is inconvenient to popularize and apply

Method used

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  • Method and equipment for preparing semisolid fused mass of ferrous material
  • Method and equipment for preparing semisolid fused mass of ferrous material

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Embodiment Construction

[0027] The present invention will be further described in conjunction with accompanying drawings.

[0028] The preparation device of semi-solid melt of iron and steel materials such as figure 1 . The device includes: a special container for holding a molten steel material 1, a temperature regulating device 5 installed outside the special container, an agitator 4 and a vibrator 7 at the bottom.

[0029] The steel material melt 1 is placed in a special container, and the stirrer 4 and the vibrator 7 respectively or simultaneously generate a stirring force field and a vibration force field to move the melt 1, and promote the freeing and freeing of the crystals formed on the inner wall of the special container crystal spheroidization. The temperature regulating device 5 installed outside the special container regulates the cooling rate of the melt 1 and the temperature gradient inside the melt to suppress the growth of dendrites. Open the sprue plug 6, and pour the qualified se...

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Abstract

An apparatus for preparing the semi-solid molten body of iron and steel is composed of a special container for molten iron or steel, temp regulator, stirrer and bottom vibrator. The linear layer of said special container contains nucleation promoter. Its method includes pouring the molten iron or steel at the temp which is 5-10 deg.C, higher than the temp of liquid-phase line into said special container, and stirring or vibrating for 1-10 min.

Description

technical field [0001] The invention relates to a method and device for preparing semi-solid melts of iron and steel materials, which are suitable for the preparation of semi-solid melts of various iron and steel materials and various non-ferrous metals. Background technique [0002] Semi-solid melt is an essential raw material for semi-solid forming, which can be used in forming methods such as die-casting, extrusion, rolling or forging. The basic requirement of a semi-solid melt is that the solid phase is fine, round, non-dendritic and evenly distributed. Due to the dendrite growth characteristics of iron and steel materials, the solid phase structure obtained by solidification under normal conditions is mainly dendrites. Therefore, how to prepare semi-solid melts of iron and steel materials that meets the requirements is a common concern. [0003] In the prior art, there are four main technical approaches for preparing semi-solid melts: utilizing external force fields or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D1/00B22D17/30B22D27/08
Inventor 邢书明张励忠张鹏刘汉武杜云慧
Owner BEIJING JIAOTONG UNIV
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