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Two-dimensional casting and forming device and method for a metal ingot

A casting molding and metal ingot technology, which is applied in the control of molten metal pouring from ladles, metal processing equipment, equipment for transporting molds, etc., can solve problems such as pores and internal quality problems of steel ingots, and improve the process Effects of cooling, reducing liquid shrinkage, and increasing nucleation rate

Active Publication Date: 2022-03-29
UNIV OF SCI & TECH LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during actual operation, pores usually appear between the cold core and the molten steel, causing quality problems inside the ingot

Method used

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  • Two-dimensional casting and forming device and method for a metal ingot
  • Two-dimensional casting and forming device and method for a metal ingot

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The preparation method of fine-grained homogeneous dense large-scale steel ingot, taking the preparation of a large-scale Q345 steel ingot with a weight of 80 tons as an example, the specific steps are as follows, see figure 1 , figure 2 :

[0041] 1) First assemble the equipment: fix the bottom plate 22 on the tank bottom of the vacuum atmosphere tank body 1, then place the longitudinal moving trolley 25 and its control mechanism on the longitudinal moving track 21, and then place the transverse moving trolley 17 on the longitudinal moving trolley 25 and its control mechanism, laying a refractory brick layer 16 on the traversing trolley 17 for heat insulation, adjusting the traversing trolley 17 and the longitudinal movement trolley 25 to the initial position, placing the 80-ton ingot mold 15 on the refractory brick layer 16; The cover 5 is placed on the top of the vacuum atmosphere tank body 1, and is locked with the bolt 3, and then the casting car 6 and the tundis...

Embodiment 2

[0048] The preparation method of fine-grained homogeneous dense alloy steel ingot, taking the 4Cr13 die steel ingot of preparation 7.5 tons as example, concrete steps are as follows, see figure 1 , figure 2 :

[0049] 1) First assemble the equipment: fix the bottom plate 22 on the tank bottom of the vacuum atmosphere tank body 1, then place the longitudinal moving trolley 25 and its control mechanism on the longitudinal moving track 21, and then place the transverse moving trolley 17 on the longitudinal moving trolley 25 and its control mechanism, laying a refractory brick layer 16 on the traversing trolley 17 for heat insulation, adjusting the traversing trolley 17 and the longitudinal movement trolley 25 to the initial position, placing the 80-ton ingot mold 15 on the refractory brick layer 16; The cover 5 is placed on the top of the vacuum atmosphere tank body 1, and is locked with the bolt 3, and then the casting car 6 and the tundish 7 are moved to the top of the vacuum...

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Abstract

The invention relates to a two-dimensional casting molding device and method for metal ingots. The vacuum atmosphere tank body is evacuated until the pressure in the vacuum atmosphere tank body is greater than the external atmospheric pressure, and water is passed into the cooling water cavity for cooling; a tundish is placed, and the casting The car and the tundish are moved to the upper part of the top cover, and the nozzle is aligned with the hole in the center of the top cover, and the pre-melted metal melt is injected into the tundish to supplement the heating of the metal melt in the tundish; start the shifting system , so that the ingot mold is under the nozzle, and then the cooling water pipe is turned on to cool the ingot mold; the metal melt is poured, the metal melt flows into the ingot mold, and the shifting system is started, the ingot mold moves continuously according to the set track, and the metal melt is controlled. The temperature field and solidification process of the body in the ingot mold until the ingot mold is filled with molten metal. The advantages are: the process is simple, and a metal ingot with uniform internal quality and fine grain and denseness can be obtained by die casting, the yield of the ingot can be improved, and the production cost can be reduced.

Description

technical field [0001] The invention belongs to the field of metal ingot preparation, and in particular relates to a two-dimensional casting forming device and method for metal ingots. Background technique [0002] At present, the production method of large metal ingots is still dominated by ordinary die casting. When casting large metal ingots by ordinary die casting, the pre-melted metal melt is poured into the ingot mold for cooling and solidification. At this time, as the three-dimensional size of the ingot increases, the solidification speed of the metal melt in the ingot mold slows down rapidly, especially for some metals with poor thermal conductivity (such as alloy steel, titanium and its alloy ingots, etc.) in this way. As a result, a series of quality problems have been brought about, such as intensified segregation, developed columnar crystals, coarse core structure, loose core, increased shrinkage cavity, and increased non-metallic inclusions, resulting in a si...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D47/00B22D7/06B22D7/12B22D27/04B22D27/15B22D33/02B22D37/00
Inventor 井玉安
Owner UNIV OF SCI & TECH LIAONING