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Preparation method of 3D printing magnesium-aluminum molten metal filtering device

A molten metal and filtering device technology, applied in the field of iron and steel metallurgy, can solve the problems of uneven distribution, poor erosion resistance, and low high-temperature strength of the filter, and achieve good filtering effect, high strength at room temperature, and uniform distribution

Inactive Publication Date: 2020-05-29
UNIV OF SCI & TECH LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low high-temperature strength and poor erosion resistance of the filter prepared by the foaming method used in the traditional molten metal filter, it will even introduce inclusions, pore size, and uneven distribution into the molten metal during service. However, the existing molten metal filter cannot completely remove the inclusions, which greatly affects the quality of the steel.

Method used

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  • Preparation method of 3D printing magnesium-aluminum molten metal filtering device
  • Preparation method of 3D printing magnesium-aluminum molten metal filtering device
  • Preparation method of 3D printing magnesium-aluminum molten metal filtering device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Put 20g of magnesium aluminum spinel powder, 80g of industrial alumina powder, 46g of fused corundum powder, 24g of fused magnesia powder, and 30g of sintered magnesia in a ball mill pot, use water as the ball mill medium, and ball mill for 8 hours; Pour the suspension into the suction filter funnel, turn on the vacuum pump and filter for 6 hours; put the mixed sludge obtained by suction filtration into a double-rotary vacuum mixer, add 40g of dextrin at the same time, and mix for 1 hour to obtain a 3D printing equipment. The magnesium-aluminum printing mud; use SolidWorks software to create a 200mm × 200mm × 50mm filter device pore adopts a square structure, and a 3D model of a molten metal filter device with a filter device pore size of 20 μm × 20 μm; use Simplify 3D software to create The 3D model of the molten metal filtering device is sliced, the layer height is 1mm, the wall thickness is 1.5mm, and the moving speed of the extrusion head is 4000mm / min; the magnesium...

Embodiment 2

[0044] Put 60g of industrial alumina powder, 52g of sintered corundum powder, 48g of sintered magnesia, and 40g of magnesia-alumina spinel powder into a ball mill pot, use water as the ball mill medium, and mill for 8 hours; pour the suspension obtained from the ball mill into the suction filter funnel In the process, turn on the vacuum pump and filter for 6 hours; put the mixed sludge obtained by suction into a double-rotary vacuum mixer, add 50g of methylene cellulose at the same time, and mix for 1 hour to obtain a magnesium-aluminum printing material for 3D printing equipment. Mud; use SolidWorks software to create a 200mm×200mm×50mm three-dimensional model of a molten metal filter device with a triangular structure for the pores of the filter device, and a right-angled side length of 15 μm; use Simplify 3D software to analyze the created molten metal filter device The 3D model is sliced, and the layer height is 1.2mm, the wall thickness is 1.5mm, and the moving speed of th...

Embodiment 3

[0047] Put 58g of industrial alumina powder, 20g of fused corundum powder, 22g of sintered magnesia, and 20g of fused magnesia powder in a ball mill tank, use water as the ball mill medium, and mill for 6 hours; pour the suspension obtained from the ball mill into suction filtration In the funnel, turn on the vacuum pump and filter for 6 hours; put the mixed sludge obtained by suction into a double-rotor vacuum mixer, add 36g of resin at the same time, and mix for 1 hour to obtain magnesium-aluminum printing sludge for 3D printing equipment; Use SolidWorks software to create a 200mm × 200mm × 50mm, filter device pores using a regular hexagonal structure, and a 3D model of a molten metal filter device with a side length of 15 μm in the filter device; use Simplify 3D software to create a 3D model of the molten metal filter device For slice processing, set the layer height to 1mm, the wall thickness to 1.5mm, and the moving speed of the extrusion head to 3000mm / min; put the magnes...

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Abstract

The invention relates to a preparation method of a 3D printing magnesium-aluminum molten metal filtering device. The method comprises the steps of: taking industrial alumina powder, sintered corundumpowder / fused corundum powder, fused magnesia powder and sintered magnesia powder as raw materials; by taking dextrin, methylene cellulose or resin as a binding agent, carrying out ball milling, suction filtration and mixing on the raw materials and the binding agent to prepare magnesium-aluminum printing pug for 3D printing equipment, preparing the biscuit of the molten metal filtering device by virtue of a 3D printing technology, and drying and sintering the biscuit to obtain the finished product of the molten metal filtering device. The prepared 3D printing magnesium-aluminum molten metal filtering device has the advantages that the pore diameter is artificially controllable, the pore size and distribution are uniform, and the filtering effect is good; and meanwhile, the biscuit is sintered at high temperature, the filtering device is high in normal-temperature strength and high in structural density, the main crystalline phase is spinel, and high temperature resistance and corrosionresistance are high.

Description

technical field [0001] The invention relates to the field of iron and steel metallurgy, in particular to a method for preparing a 3D printed magnesium-aluminum molten metal filter device. Background technique [0002] In the past 20 years, my country's iron and steel industry has developed rapidly in terms of steel varieties and quality. However, high-end special steels such as high-performance die steel and high-strength wear-resistant steel still have an annual import volume of tens of millions of tons, which greatly restricts the country's major The development of engineering construction, high-end equipment manufacturing and other fields. Performance stability has always been the main gap between domestic high-end special steel and imported steel, and one of the important reasons for the poor performance stability of domestic steel is the lack of precise control of non-metallic inclusions in steel. [0003] At present, the means of removing inclusions in the metallurgica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/117C04B35/622C04B35/66C04B38/00B01D29/00B33Y10/00B33Y70/10
CPCB01D29/00B33Y10/00B33Y70/00C04B35/117C04B35/622C04B35/66C04B38/0003C04B2235/3206C04B2235/3222C04B2235/5436C04B2235/656C04B2235/6567C04B2235/77C04B2235/96C04B2235/9607C04B38/0067
Inventor 罗旭东满奕然侯庆冬
Owner UNIV OF SCI & TECH LIAONING