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A kind of al-mg-in welding wire and its preparation method

An al-mg-in, welding wire technology, applied in welding equipment, welding media, manufacturing tools, etc., can solve problems such as not being developed, and achieve the effects of improving tensile strength, as-cast performance, and plasticity.

Active Publication Date: 2017-07-18
广西北港新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, people have not yet developed an Al-Mg-In welding wire that uses In as the main additive element.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1. Al-Mg-In welding wire, the weight percentage of composition is Mg: 4.5%, In: 0.15%, Ce: 0.1%, Mn: 0.4%, Ti: 0.05%, Si: 0.3%, Fe: 0.2% And Na: 0.0015%, the balance is Al.

[0039] 2. The preparation method of Al-Mg-In welding wire, its operation steps are as follows:

[0040] (1) Preparation of raw materials: the matrix element Al is added in the form of 99.7% purity; the addition method of alloy elements is: Mg and Ce are added in the form of 99.9% purity, In is added in the form of 99.99% purity, and Ti is added in the form of Add in the form of Al-5Ti-B, add Mn in the form of Al-10Mn master alloy, and prepare according to the weight percentage of the above-mentioned 1. Al-Mg-In welding wire composition.

[0041] (2) Alloy melting:

[0042] The medium frequency induction resistance furnace is used for smelting, and the aluminum ingot and the Al-10Mn master alloy are smelted in the furnace at one time. The melting temperature is 760 ° C. After the melt is soft and ...

Embodiment 2

[0051] 1. Al-Mg-In welding wire, the weight percentage of composition is Mg: 5.0%, In: 0.25%, Ce: 0.15%, Mn: 0.5%, Ti: 0.10%, Si: 0.3%, Fe: 0.2% And Na: 0.0015%, the balance is Al.

[0052] 2. The preparation method of Al-Mg-In welding wire, its operation steps are as follows:

[0053] Step (1) is with embodiment 1.

[0054] (2) Alloy melting:

[0055] The medium frequency induction resistance furnace is used for smelting, and the aluminum ingot and the Al-10Mn master alloy are smelted in the furnace at one time. The melting temperature is 720 ° C. After the melt is soft and slumped, a covering agent is added for protection. The formula of the covering agent is CaF by weight percentage. 2 12%, MgCl 2 71% and CaCl 2 17%, keep warm for 30 minutes, stir the melt to make the internal temperature and composition of the melt uniform; add Ce at 760°C; add Mg at 700°C and In at 650°C; heat up to 760°C and use CCl 6 Refining, after cooling down to 720°C, the melt is allowed to sta...

Embodiment 3

[0063] 1. Al-Mg-In welding wire, the weight percentage of composition is Mg: 5.5%, In: 0.35%, Ce: 0.20%, Mn: 0.7%, Ti: 0.15%, Si: 0.3%, Fe: 0.2% And Na: 0.0015%, the balance is Al.

[0064] 2. Its preparation method is with embodiment 1, and difference is that in step (3) annealing temperature is 450 ℃, and soaking time is 20 hours; In step (4), extrusion temperature is 380 ℃, and extrusion ratio is 15 , the size of the billet after extrusion is φ10mm; in step (5), the intermediate annealing temperature is 420°C, and the holding time is 1 hour.

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Abstract

The invention discloses an Al-Mg-In system welding wire and a preparing method thereof. The welding wire comprises, by weight, 4.0%-6.5% of Mg, 0.15%-1.0% of In, 0.1%-0.4% of Ce, 0.4%-1.2% of Mn, 0.05%-0.15% of Ti, smaller than or equal to 0.3% of Si, smaller than or equal to 0.2% of Fe, smaller than or equal to 0.0015% of Na, and the balance Al. The preparing method comprises the following steps that an aluminum ingot, a magnesium ingot, an indium ingot, a cerium ingot and Al-10 Mn intermediate alloy are smelted in a medium-frequency induction resistance furnace according to the proportion, a refiner is made through Al-5Ti-B, and an ingot casting is formed through casting; after the ingot casting is evenly annealed, head cropping and face milling are carried out, and a rod-shaped blank is formed through thermal extrusion; and wire drawing is carried out on the rod-shaped blank through a drawing machine, and the Al-Mg-In system welding wire is obtained through surface treatment and coiling. The Al-Mg-In system welding wire has the following advantages that the technology is simple and each to achieve, the spreadability and wettability of the welding wire are good, and the heat crack sensibility is small; the structure of the welding wire is refined, and the forming technology is superior; and compared with base metal, a welding connector has high strength and tenacity matching.

Description

technical field [0001] The invention belongs to the technical field of metal material preparation. Specifically, it is an Al-Mg-In series welding wire and a preparation method thereof. Background technique [0002] At present, light rail trains, subway trains and high-speed train cars are all welded components with aluminum alloy profiles as the skeleton. Welding can reduce the workload of vehicle manufacturing by 40%. The running performance, running speed, carrying capacity and efficiency of the vehicle depend on the welding materials Performance is good or bad. However, the aluminum alloy welding wire needed for domestic vehicle manufacturing mainly relies on imports, of which the welding wires 4043, 5082 and 5356 produced by the Aluminum Corporation of America (ALCOA) account for more than 90%. The rapid development of my country's intercity light rail and high-speed rail industry has sharply increased the demand for Al-Mg alloy welding wire, and the market potential f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/08C22C1/03B23K35/40
CPCB23K35/40C22C1/026C22C1/03C22C21/08
Inventor 赵艳君马本莉胡治流蒋长标李逸泰潘利文曾建民苏玲
Owner 广西北港新材料有限公司
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