Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Hot Top Casting Process of 7xxx Series Superhard Aluminum Alloy Round Rod with φ784mm

A hard aluminum alloy and hot top casting technology, which is applied in the field of metal material forming, can solve the problems of bright crystal grains, loose pores, etc., and achieve the effect of reducing the internal stress of casting

Active Publication Date: 2017-12-22
CHINA ZHONGWANG
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a hot-top casting process for 7xxx series superhard aluminum alloy round rods with a diameter of 784 mm. cracks, composition segregation, bright crystal grains, coarse grains, loose pores and other defects, and the use of hot top casting solves the defects of surface segregation, coarse grain layer thickness, etc., greatly improving the yield and production efficiency, and reducing casting costs

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
  • Hot Top Casting Process of 7xxx Series Superhard Aluminum Alloy Round Rod with φ784mm
  • Hot Top Casting Process of 7xxx Series Superhard Aluminum Alloy Round Rod with φ784mm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The hot-top casting process of the 7xxx series superhard aluminum alloy round rod, the aluminum alloy round rod contains the following chemical components by mass: Si 0.25%; Fe 0.4%; Cu 1.6%; Mn 0.25%; Mg 2.6%; Cr 0.2%; Zn 5.6%; Ti 0.15%; Zr 0.03%; Al balance.

[0040] Its preparation process comprises the following steps:

[0041] a. Material preparation: select low-iron and low-silicon aluminum ingots, aluminum-manganese alloys, aluminum-copper master alloy ingots, aluminum-lead master alloy ingots and magnesium ingots according to the ratio;

[0042] b. Smelting: Add other raw materials except magnesium ingots to the furnace for smelting, the melting temperature is 760°C, and add magnesium ingots after complete melting, refining and slag removal;

[0043] c. Stirring: the electromagnetic stirrer is used to stir to ensure that the raw materials in the furnace can be melted quickly and the temperature is uniform;

[0044] d. Refining: the refining process includes s...

Embodiment 2

[0057] The hot-top casting process of the 7xxx series superhard aluminum alloy round rod, the aluminum alloy round rod contains the following chemical components by mass: Si 0.25%; Fe 0.4%; Cu 1.55%; Mn 0.25%; Mg 2.55%; Cr0.19%; Zn5.6%; Ti0.15%; Zr0.03%; Al balance.

[0058] Its preparation process comprises the following steps:

[0059] a. Material preparation: select low-iron and low-silicon aluminum ingots, aluminum-manganese alloys, aluminum-copper master alloy ingots, aluminum-lead master alloy ingots and magnesium ingots according to the ratio;

[0060] b. Smelting: Add other raw materials except magnesium ingots to the furnace for smelting, the melting temperature is 755°C, and add magnesium ingots after complete melting, refining and slag removal;

[0061] c. Stirring: the electromagnetic stirrer is used to stir to ensure that the raw materials in the furnace can be melted quickly and the temperature is uniform;

[0062] d. Refining: the refining process includes s...

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
yield strengthaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a hot-top casting process for a 7xxx series superhard aluminum alloy round rod with a diameter of 784mm. The aluminum alloy round rod contains the following chemical components by mass: Si 0.25%; Fe 0.4%; Cu 1.55-1.65%; Mn 0.25%; Mg 2.55-2.65%; Cr 0.19-0.25%; Zn 5.6-5.7%; Ti 0.15%; Zr 0.03%; d, refining; e, slag removal; f, heat preservation and standing; g, on-line refinement; h, on-line degassing; i, filtration; j, casting; k, homogeneous treatment. The process disclosed by the invention solves the defects such as cracks, component segregation, bright crystal grains, coarse grains, and loose pores that often occur when the large-diameter superhard aluminum alloy adopts the direct condensation casting technology, and the hot top casting solves the surface segregation Defects such as nodules and coarse grain thickness.

Description

technical field [0001] The invention belongs to the field of metal material forming, and relates to an aluminum alloy casting method, in particular to a hot-top casting process for a 7xxx series superhard aluminum alloy round bar with a diameter of 784 mm. Background technique [0002] 7xxx series aluminum alloys have the advantages of high specific strength and hardness, good thermal processing performance, excellent welding performance, good corrosion resistance and high toughness, etc., and should be made into structural materials with greater bearing capacity and widely used In the aerospace industry and other civil industrial fields. [0003] Although the strength of 7xxx series aluminum alloys is superior to that of 6XXX series aluminum alloys, the tensile strength and yield strength of some alloys can reach more than 400MPa, but the tensile strength and yield strength of 7xxx series aluminum alloys both reach 400MPa or more, after anodic oxidation, the surface The qu...

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 Patents(China)
IPC IPC(8): C22C21/10C22C1/03C22C1/06B22D11/00C22F1/053
CPCB22D11/003C22C1/026C22C1/03C22C1/06C22C21/10C22F1/053
Inventor 马青梅盖洪涛李菁菁叶尚英李伟
Owner CHINA ZHONGWANG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com