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

Fusion casting method of large-size high-performance titanium and titanium alloy ingot

A titanium alloy, high-performance technology, applied in the field of melting and casting of large-scale high-performance titanium and titanium alloy ingots, can solve problems such as adverse effects on mechanical properties, low efficiency, and failure to meet the application requirements of titanium and titanium alloys, and achieve improved metallographic microscopic Organizational structure, overcoming segregation, and avoiding the effects of coarse grain boundaries

Inactive Publication Date: 2011-03-30
BAOJI LIXING TITANIUM IND
View PDF0 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The efficiency of traditional small-scale titanium and titanium alloy smelting is low, and the segregation of the chemical composition of titanium alloy and the unsatisfactory metallographic structure have a negative impact on its mechanical properties, which cannot meet the growing demands of titanium and titanium alloys in various fields, especially aviation and aerospace. Growing Application Requirements
Segregation defects in titanium alloy ingots smelted in vacuum consumable electrode electric arc furnaces are common in the prior art

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: TA2 pure titanium ingot melting.

[0015] (1) Pressed electrode: press zero pole sponge titanium with a density > 3.2g / cm 3 , the weight of the electrode block is 100Kg, the number of electrode blocks is 50, and the total weight of the electrode is 5000Kg;

[0016] (2) Assembling electrodes: argon arc welding is used to assemble the pressed electrode blocks into large-scale consumable electrodes, and the electrode end face of the assembly welding is perpendicular to the length direction, and the electrode curvature is ≤5‰;

[0017] (3) One-time vacuum consumable smelting: put the welded electrode into a φ720mm crucible of vacuum consumable electrode electric arc furnace for one smelting, the working vacuum in the furnace is ≤0.08×10pa, the melting current is 10~28KA, and the melting voltage 20~40V, water temperature 20~50℃, the smelted ingot is naturally cooled for 2~4 hours and then released to make a φ720mm primary ingot, the temperature of the furnace ...

Embodiment 2

[0019] Example 2: smelting of TC4 titanium alloy ingot.

[0020] (1) Pressed electrode: mix 89.64Kg of titanium sponge, 7.150Kg of Al-V master alloy, and 3.210Kg of Al bean, and then press the electrode, with a density of > 3.2g / cm 3 , Pressed electrode block weight 100kg. The weight of the electrode block is 100Kg, the number of electrode blocks is 50, and the total weight of the electrode is 5000Kg;

[0021] (2) Assembling electrodes: argon arc welding is used to assemble the pressed electrode blocks into large-scale consumable electrodes, and the electrode end face of the assembly welding is perpendicular to the length direction, and the electrode curvature is ≤5‰;

[0022] (3) One-time vacuum consumable smelting: Put the welded electrode into a φ640mm crucible in a vacuum consumable electrode electric arc furnace for one smelting, the working vacuum in the furnace is ≤0.08×10pa, the melting current is 10-28KA, and the melting voltage 20~40V, water temperature 20~50℃, the...

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
Densityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a fusion casting method of a large-size high-performance titanium and titanium alloy ingot, which comprises the following steps: (1) electrode compression: compressing pure titanium or titanium alloy materials into electrode blocks; (2) assembly and welding of an electrode: carrying out argon arc welding on the compressed electrode blocks to obtain a large consumable electrode; (3) primary vacuum consumable fusion: carrying out primary fusion on the assembled and welded electrode in a vacuum consumable-electrode arc furnace to obtain a primary cast ingot; and (4) secondary vacuum consumable fusion: carrying out secondary fusion on the primary cast ingot used as the electrode to obtain a finished cast ingot product. Compared with the prior art, the invention can effectively overcome the segregation of alloy components in the titanium alloy and improve the metallographical microscopic structure, thereby preventing the fusion ingot from being subject to coarse grain boundary, embrittlement of carbide networks and the like, reducing the generation of cracks, enhancing the strength and the mechanical property of the titanium alloy and improving the fusion efficiency.

Description

technical field [0001] The invention relates to a method for melting and casting large-scale high-performance titanium and titanium alloy ingots. Background technique [0002] Titanium and titanium alloys have light weight, high strength, corrosion resistance and excellent mechanical properties. Its application has expanded from chemical industry, energy, environmental protection, etc. to high-tech fields such as naval vessels, aviation, and aerospace. At the same time, higher requirements are put forward for the performance of titanium and titanium alloys. The efficiency of traditional small-scale titanium and titanium alloy smelting is low, and the segregation of the chemical composition of titanium alloy and the unsatisfactory metallographic structure have a negative impact on its mechanical properties, which cannot meet the growing demands of titanium and titanium alloys in various fields, especially aviation and aerospace. growing application requirements. In the prio...

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
IPC IPC(8): C22B9/20C22B34/12C22C1/02C22C14/00
Inventor 赵坤
Owner BAOJI LIXING TITANIUM IND
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