Supercharge Your Innovation With Domain-Expert AI Agents!

Directional solidifying preparation method of lotus-shaped porous aluminum

A directional solidification, lotus-shaped porous technology, which is applied in the field of directional solidification and preparation of lotus-shaped porous aluminum

Inactive Publication Date: 2015-05-06
JIANGXI UNIV OF SCI & TECH
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both the air blowing foaming method and the solid foaming agent method have disadvantages such as the size of the pores and the distribution range and uniformity of the metal matrix, which are difficult to control; the porous materials prepared by the infiltration casting method and the investment casting method have poor porosity. It can only be kept within a narrow range, and its production cost is high; porous materials are prepared by spray deposition method and powder metallurgy method, the production cost is high, and it is difficult to form industrialization

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Directional solidifying preparation method of lotus-shaped porous aluminum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] After cleaning and removing 2kg of electrolytic aluminum with a purity of more than 99.9%, bake it in a holding furnace at 200°C for 2 to 4 hours to fully degas, place a melting crucible and a holding crucible in the vacuum directional solidification furnace, and then put the into the vacuum directional solidification furnace, close the furnace door of the vacuum directional solidification furnace, lock the safety lock of the furnace door, turn on the vacuum pump, and evacuate to 10 -1 Below Pa; turn on the cooling circulating water, turn on the heating power of the induction coil for heating the outer layer of the melting crucible, turn on the electricity to heat, and heat the electrolytic aluminum to 680°C. After the electrolytic aluminum in the melting crucible is completely melted, turn off the vacuum system and fill it with 0.5 MPa of hydrogen with a purity of 99.99%, heat preservation and pressure for 15 minutes; heat the graphite heater on the outer layer of the h...

Embodiment 2

[0030] After cleaning and removing 2kg of electrolytic aluminum with a purity of more than 99.9%, bake it in a holding furnace at 200°C for 2 to 4 hours to fully degas, place a melting crucible and a holding crucible in the vacuum directional solidification furnace, and then put the into the vacuum directional solidification furnace, close the furnace door of the vacuum directional solidification furnace, lock the safety lock of the furnace door, turn on the vacuum pump, and evacuate to 10 -1 Below Pa; turn on the cooling circulating water, turn on the heating power of the induction coil for heating the outer layer of the melting crucible, turn on the electricity to heat, and heat the electrolytic aluminum to 700°C. After the electrolytic aluminum in the melting crucible is completely melted, turn off the vacuum system and fill it with Purity of 99.99% hydrogen 1.0MPa, heat preservation and pressure for 20 minutes; heat the graphite heater on the outer layer of the heat preserv...

Embodiment 3

[0033] After cleaning and removing 2kg of electrolytic aluminum with a purity of more than 99.9%, bake it in a holding furnace at 200°C for 2 to 4 hours to fully degas, place a melting crucible and a holding crucible in the vacuum directional solidification furnace, and then put the into the vacuum directional solidification furnace, close the furnace door of the vacuum directional solidification furnace, lock the safety lock of the furnace door, turn on the vacuum pump, and evacuate to 10 -3 Below Pa; turn on the cooling circulating water, turn on the heating power of the induction coil for heating the outer layer of the melting crucible, turn on the electricity to heat, and heat the electrolytic aluminum to 720°C. After the electrolytic aluminum in the melting crucible is completely melted, turn off the vacuum system and fill it with Purity of 99.99% hydrogen 5.0MPa, heat preservation and pressure for 20 minutes; heat the graphite heater on the outer layer of the heat preserv...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
porosityaaaaaaaaaa
porosityaaaaaaaaaa
porosityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a directional solidifying preparation method of lotus-shaped porous aluminum. The directional solidifying preparation method comprises the following steps: adding electrolytic aluminum with the purity higher than 99.9% into a vacuum directional solidifying furnace, closing a furnace door, locking a furnace door safety lock, starting a vacuum pump, carrying out vacuumizing until the pressure is below 10<-1>Pa, switching on a circulating cooling water valve, and heating electrolytic aluminum to 680-750 DEG C until electrolytic aluminum is completely molten; shutting down a vacuum system, supplying hydrogen or mixed gas of hydrogen and argon until reaching a preset pressure, and after maintaining the temperature for a period of time, carrying out downward draw-casting, so as to prepare lotus-shaped porous aluminum. The porosity of openings of porous aluminum is 30%-70%, the average diameter of air holes is 0.2mm-1.0mm, and the air holes can be uniformly or directionally positioned. The lotus-shaped porous aluminum can be widely applied to the fields of aviation, aerospace, automobiles, information, buildings, military, nuclear energy and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of new non-ferrous metal materials, and in particular relates to a method for preparing directional solidification of lotus-shaped porous aluminum. Background technique [0002] In recent years, with the demand for green materials such as environmental protection, cleanliness, high efficiency and energy saving in various fields, new materials and new technologies have emerged continuously. As structural materials and functional materials with excellent performance, metal porous materials are constantly expanding their application fields, from high-efficiency filtration and separation of solid-liquid-gas to surface combustion, fuel cells, energy-saving heat pipes, from noise reduction, shock resistance to ultra-light structures , metal porous materials have become a new type of engineering material with excellent performance in both function and structure, and are widely used in industries such...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/08C22C21/00
Inventor 李勇张建波郑碰菊姜兴振杨新涛
Owner JIANGXI UNIV OF SCI & TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com