CN101269436B - Aluminum-titanium alloy dissimilar metal scraping and wiping agitation soldering method - Google Patents
Aluminum-titanium alloy dissimilar metal scraping and wiping agitation soldering method Download PDFInfo
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- CN101269436B CN101269436B CN2008100644484A CN200810064448A CN101269436B CN 101269436 B CN101269436 B CN 101269436B CN 2008100644484 A CN2008100644484 A CN 2008100644484A CN 200810064448 A CN200810064448 A CN 200810064448A CN 101269436 B CN101269436 B CN 101269436B
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Abstract
The invention relates to a welding method used in the welding process of titanium and titanium alloy, aluminum and aluminum alloy heterologous metal, and the welding method belongs to the field of consumable electrode welding, an electric arc smelting technology and electric arc processing. The welding method of the invention aims to solve the problems of intersolubility and a chemical compound among metal in the welding process of the titanium and the titanium alloy, the aluminum and the aluminum alloy heterologous metal, as well as expensive cost and long production cycle of the domestic existing diffusion connection device; thus the welding method of the invention provides a scrapping and agitating welding method for the aluminum-titanium alloy heterologous metal. In the welding process, in a liquid melting bath, the scrapping method is adopted for removing a large intermetallic compound of a welding joint face; through scrapping and agitating, a crushed compound is dispersed; the material adopts TC4 titanium alloy and LF6 aluminum alloy; the welding machine is a TIG welding machine. The welding effect of the welding method can reach the diffusion welding effect, and the equipment used in the invention is simple, thereby greatly reducing the cost and improving the efficiency.
Description
Technical field
The present invention relates to a kind of welding method, employed welding method in specifically a kind of titanium or titanium alloy, aluminium and the aluminium alloy dissimilar metal welding process belongs to melt pole electrical arc welding, arc smelting technology, electric arc processes field.
Background technology
Advantages such as aluminium and aluminium alloy, titanium or titanium alloy have all that density is little, intensity is high, corrosion resistance and good heat resistance.In space was used, unit mass loss of weight cost rised in value more than 10000 Euros.High-strength light such as titanium, aluminium alloy has huge economic advantages, is widely used in the Aeronautics and Astronautics field by countries in the world.Yet, titanium alloy density is big and welding procedure is poor than aluminium alloy, again because the cost of titanium alloy far above aluminium alloy, simultaneously in application, we often require parts will possess the property of several respects, and this not to be single material can possess.The foreign material attaching parts can be utilized material advantage separately to greatest extent, receive the effect of " making the best use of everything ".
Aluminium, titanium and diverse metal alloy thereof connect, and for multiple product has proposed new thinking, also have a large amount of problems but connect between them, and what wherein application is had the greatest impact is intersolubility and intermetallic compound problem.Have monograph to point out: the essential condition that obtains the welding point of dissimilar metal is: intersolubility is completely arranged between them, can form the solid solution of gap or continuous series.When not possessing these conditions and physical and chemical performance and differ greatly, can produce the intermetallic compound and the eutectic of fragility, and be difficult to welding.If intermetallic compound is with superfine field trash shape compound and eutectic, and be difficult to welding.If intermetallic compound is distributed between the alloy grain with superfine field trash form disperse, then may be harmless fully; And if be band shape or needle-like appears between the crystal boundary, or between two kinds of metals intermediate layer appears, the danger that causes the metal brittle fracture is just arranged.From the periodic table of elements and aluminium-titanium phasor as seen, two kinds of physical chemistry of metal nature difference are very big, at room temperature do not satisfy the intersolubility condition, when welding, will form intermetallic compound on the contact wire of solid-state titanium and liquid aluminium.Formed compound has Ti
3Al, TiAl, TiAl
2And TiAl
3Etc. multiple, and compound growth speed is very fast, controls improperly will be covered with whole joint.They have low extensibility and easy fracture performance below 600 ℃, intermetallic compound shows strong stress and concentrates tendency, can cause rapid brittle fracture.Therefore, how to control the frangible compounds growth, or change the form of the compound that has generated and the key that distribution will become solution aluminium, titanium and diverse metal alloy connectivity problem thereof.
Domestic aluminium, titanium and alloy foreign material thereof are connected studied seldom, and the method for attachment of the compound syndeton of dissimilar metals such as titanium, aluminium diffusion commonly used is at present produced.For solving the problem of deoxidation film and compound growth, adopt the method for welding under the preceding striping of weldering, the vacuum environment usually, and adopt the method that adds intermediate barrier layers, the atom between restriction aluminium-titanium diffuses to form compound layer.Yet the size of the apparatus expensive that diffusion connects, production cycle length and connected piece is subjected to the restriction of diffuser casing (vacuum chamber) size.In aluminium, titanium and diverse metal alloy welding process thereof, the generation of intermetallic compound and growth are inevitable at the interface, and these intermetallic compound butt joint performances have decisive influence, but do not control the ripe theory and the guiding technology of intermetallic compound growth at present.This produces huge obstruction to the practical application that aluminium, titanium and diverse metal alloy thereof connect.
Summary of the invention
The objective of the invention is in order to solve intersolubility and the intermetallic compound problem in titanium or titanium alloy, aluminium and the aluminium alloy dissimilar metal welding process, and shortcoming such as domestic existing diffusion connection device costliness, production cycle be long, proposed aluminum-titanium alloy dissimilar metal scraping and wiping agitation soldering method, the concrete scheme of this method is as follows:
Step 1: at first utilize argon gas with the air emptying in the welding chamber 1.After titanium plate or titanium alloy sheet 2 cleared up, place the air emptying and be full of the welding chamber 1 of argon gas.
Step 2: start welder, select less current, utilize the method for ac tungsten inert gases welding, the aluminium alloy welding wire heap is applied on titanium plate or titanium alloy sheet 2.
Step 3: heap forms the certain thickness aluminium alloy layer 3 of one deck after applying and finishing.Suitably strengthen electric current, and prepare welding once more.
Step 4: the tool heads of will swiping 4 is installed on the jig 5 of rotation, welds simultaneously, aluminium alloy layer 3 refuses that heap is applied.
Step 5: utilize scraping tool heads 4 scraping molten baths when welding, the tool heads 4 of swiping this moment is done rotation and traverse motion.This action continues to welding always and finishes.
Step 6: in welding chamber, be cooled to room temperature after the weldment welding is finished.
The present invention adopts the way of scraping to remove large stretch of intermetallic compound of solder joints face in welding process in the liquid molten bath, and by the scraping stirring, make that broken compound disperses to distribute, material TC4 titanium alloy and LF6 aluminium alloy, welding machine is a tig arc welding machine, and welding effect of the present invention can reach the diffusion welding method effect, and this method equipment therefor is simple, greatly reduce cost, improved efficient.
Description of drawings
Fig. 1 is the welding schematic diagram of aluminium-titanium of the present invention and diverse metal alloy scraping and wiping agitation soldering method thereof.
The specific embodiment
Below in conjunction with accompanying drawing aluminium-titanium of the present invention and diverse metal alloy scraping and wiping agitation soldering method thereof are described further.
Embodiment 1, in conjunction with Fig. 1, described aluminium, titanium and diverse metal alloy scraping and wiping agitation soldering thereof connect method and are achieved in that and at first utilize argon gas with the air emptying in the welding chamber 1, after titanium plate or titanium alloy sheet 2 are cleared up, place the air emptying and are full of the welding chamber 1 of argon gas.Start welder, select less current, utilize the method for ac tungsten inert gases welding, the aluminium alloy welding wire heap is applied on titanium plate or titanium alloy sheet 2.Heap forms the certain thickness aluminium alloy layer 3 of one deck after applying and finishing.Suitably strengthen electric current, and prepare welding once more.Scraping tool heads 4 is installed on the jig 5 of rotation, welds simultaneously, aluminium alloy layer 3 refuses that heap is applied.Utilize scraping tool heads 4 scraping molten baths when welding, the tool heads 4 of swiping this moment is done rotation and traverse motion.This action continues to welding always and finishes.After finishing, the weldment welding in welding chamber, is cooled to room temperature.
Adopt the scraping tool heads that large stretch of intermetallic compound of solder joints face is distributed broken also the dispersion; The effect of argon gas is to prevent that weld metal produces oxidation reaction in the welding, influences welding quality and produces intermetallic compound.
Claims (2)
1. aluminium-titanium and diverse metal alloy scraping and wiping agitation soldering method thereof is characterized in that welding method is taked following steps:
Step 1: at first utilize argon gas with the air emptying in the welding chamber (1), after titanium plate or titanium alloy sheet (2) are cleared up, place the air emptying and be full of the welding chamber (1) of argon gas;
Step 2: start welder, select less current, utilize the method for ac tungsten inert gases welding, the aluminium alloy welding wire heap is applied on titanium plate or titanium alloy sheet (2);
Step 3: heap forms the certain thickness aluminium alloy layer of one deck (3) after applying and finishing, and suitably strengthens electric current, and prepares welding once more;
Step 4: the tool heads of will swiping (4) is installed on the jig (5) of rotation, welds simultaneously, aluminium alloy layer (3) refuse that heap is applied;
Step 5: utilize scraping tool heads (4) scraping molten bath when welding, the tool heads (4) of swiping this moment is done rotation and traverse motion, and this action continues to welding always and finishes;
Step 6: in welding chamber, be cooled to room temperature after the weldment welding is finished.
2. aluminium-titanium according to claim 1 and diverse metal alloy scraping and wiping agitation soldering method thereof is characterized in that: the material of scraping tool heads (4) is tungsten or cerium tungsten or high-melting-point ceramic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100644484A CN101269436B (en) | 2008-05-06 | 2008-05-06 | Aluminum-titanium alloy dissimilar metal scraping and wiping agitation soldering method |
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|---|---|---|---|
| CN2008100644484A CN101269436B (en) | 2008-05-06 | 2008-05-06 | Aluminum-titanium alloy dissimilar metal scraping and wiping agitation soldering method |
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| CN101269436A CN101269436A (en) | 2008-09-24 |
| CN101269436B true CN101269436B (en) | 2010-06-02 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294533A (en) * | 2011-07-26 | 2011-12-28 | 浙江五环钛业股份有限公司 | titanium and titanium alloy welding process |
| CN102615402A (en) * | 2012-04-25 | 2012-08-01 | 山东大学 | Tungsten electrode argon arc welding method for filler wires of titanium alloy and aluminum alloy |
| CN103433584A (en) * | 2013-06-19 | 2013-12-11 | 哈尔滨工业大学 | Medium-temperature brazing method of dissimilar metals of titanium and aluminium under atmospheric condition |
| CN105057881A (en) * | 2015-09-18 | 2015-11-18 | 哈尔滨工业大学 | Method for overlap joint of special-shaped titanium aluminum metal through friction stir welding by utilizing pre-stacking aluminum layer |
| JP6727095B2 (en) * | 2016-10-17 | 2020-07-22 | 三菱重工業株式会社 | Dissimilar metal joining method |
| CN109332860B (en) * | 2018-11-23 | 2021-01-05 | 大连理工大学 | Arc additive manufacturing method of 5083 aluminum alloy/TC 4 titanium alloy structure |
| CN111390338B (en) * | 2020-04-03 | 2022-02-11 | 哈尔滨工业大学 | Method for additive manufacturing of TiAl intermetallic compound through heterogeneous dual-wire TOP-TIG electric arc |
| CN113618330A (en) * | 2021-07-20 | 2021-11-09 | 南京航空航天大学 | Repair device and method for repairing titanium alloy and steel structure through aluminum alloy solid-phase material increase |
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| CN1730224A (en) * | 2005-09-06 | 2006-02-08 | 中国航天科技集团公司第一研究院第七○三研究所 | Ti-Al intermetallic compound alloy transition liquid phase diffusion weld composite connection method |
| DE102005037134A1 (en) * | 2005-08-06 | 2007-02-08 | Friedrich-Alexander-Universität Erlangen-Nürnberg | Connecting flat components by friction welding, e.g. to form steel-aluminum hybrid sheets for use in automobiles, involves pressing part of one component onto incisions in other with rotating welding mandrel |
| CN101015876A (en) * | 2007-02-14 | 2007-08-15 | 哈尔滨工业大学 | AC tungsten inert gases welding electric arc micro-melting brazing procedure for aluminium, titanium and diverse metal alloy thereof |
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2008
- 2008-05-06 CN CN2008100644484A patent/CN101269436B/en not_active Expired - Fee Related
Patent Citations (3)
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|---|---|---|---|---|
| DE102005037134A1 (en) * | 2005-08-06 | 2007-02-08 | Friedrich-Alexander-Universität Erlangen-Nürnberg | Connecting flat components by friction welding, e.g. to form steel-aluminum hybrid sheets for use in automobiles, involves pressing part of one component onto incisions in other with rotating welding mandrel |
| CN1730224A (en) * | 2005-09-06 | 2006-02-08 | 中国航天科技集团公司第一研究院第七○三研究所 | Ti-Al intermetallic compound alloy transition liquid phase diffusion weld composite connection method |
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Assignee: Youer Metal Products (Suzhou) Co.,Ltd. Assignor: Harbin Institute of Technology Contract record no.: 2011320010089 Denomination of invention: Aluminum-titanium alloy dissimilar metal scraping and wiping agitation soldering method Granted publication date: 20100602 License type: Exclusive License Open date: 20080924 Record date: 20110711 |
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