High strength low heat cracking aluminium copper serial alloy welding wire, its preparation method and application

An alloy welding wire, aluminum-copper technology, applied in welding equipment, welding equipment, arc welding equipment, etc., can solve the problems of serious arc crater cracks and low weld metal strength, and achieve excellent resistance to thermal cracking, small spatter, melting deep effect

Inactive Publication Date: 2006-06-14
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
View PDF0 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The weld structure of this kind of welding wire is composed of dendrites and coarse eutectics distributed along the grain boundaries. The strength of the weld metal is low. When welding 2219 and 2519 high-strength aluminum-copper alloys with it, the strength of the welded joint can only reach that of the base metal. About 55% to 60%, and the arc crater crack is more serious

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 Construction

[0019] The present invention is described in further detail below in conjunction with embodiment.

[0020] According to the chemical composition range of the welding wire of the present invention, three kinds of welding wires with different composition contents have been processed and prepared, and the preparation process is as follows: using intermediate alloys such as Al-Cu, Al-Mn, Al-V and pure Ag and high-purity Al The alloy is prepared and smelted in a well-type electric furnace with a graphite crucible at a melting temperature of 750-760°C; the addition of Ti and Zr elements in the alloy is done by K 2 TiF 4 and K 2 ZrF 4 It is added in the form of reaction between salts and molten aluminum; refining with refining slag removal agent, deslagging and dehydrogenation with hexachloroethane; after refining, the alloy solution is poured into a preheated iron mold at 720°C to form an ingot, iron The preheating temperature of the mold was 200°C. After the ingot is homogenize...

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

No PUM Login to view more

Abstract

A welding Al-Cu alloy wire for MIG welding and AC TIG welding contains Cu (5.5-6.5 Wt%), Mn (0.2-0.6), Ti (0.15-0.30), Zr (0.15-0.35), V (0.05-0.20), Ag (0.2-0.5), Si (0-0.1), Fe (0-0.15) and Al (rest). Its preparing process includes such steps as smelting in graphite crucible, refining, removing slag, dehydrogenating, casting, soaking, removing scale, extruding, drawing and scraping. Its advantages are high strength, high plasticity and high cracking resistance.

Description

technical field [0001] The invention belongs to the field of welding materials, in particular to a high-strength and low-thermal-crack aluminum-copper alloy welding wire and its preparation method and application, which are mainly used for melting gas shielded welding (MIG) and alternating tungsten argon arc welding (TIG) for welding aluminum Copper-based high-strength aluminum alloy. Background technique [0002] Aluminum-copper alloys are precipitation-strengthened alloys, which can be strengthened by heat treatment. They have high room temperature strength and good high-temperature and ultra-low-temperature performance. They are widely used in aviation, aerospace and other military and civilian vehicles, such as: storage of space shuttles and launch vehicles. Fuel tanks for liquid hydrogen and liquid oxygen, structural parts for supersonic aircraft and automobiles, and armor for light combat vehicles. The recently developed howitzer mount also uses a large number of new ...

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): B23K35/28B23K9/16B23K35/40
Inventor 国旭明杨成刚钱百年
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap