CN104646821A - Gas protective friction welding method of titanium alloy and zirconium alloy - Google Patents
Gas protective friction welding method of titanium alloy and zirconium alloy Download PDFInfo
- Publication number
- CN104646821A CN104646821A CN201510010432.5A CN201510010432A CN104646821A CN 104646821 A CN104646821 A CN 104646821A CN 201510010432 A CN201510010432 A CN 201510010432A CN 104646821 A CN104646821 A CN 104646821A
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- titanium alloy
- zircaloy
- workpiece
- friction welding
- welding method
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/24—Preliminary treatment
Abstract
The invention relates to a gas protective friction welding method of titanium alloy and zirconium alloy. The method comprises the steps of grinding or washing a connector of a titanium alloy workpiece and a zirconium alloy workpiece; clamping the titanium alloy workpiece and the zirconium alloy workpiece onto a friction welding device, arranging a butt-joint connector in an inert gas protective box, and introducing argon into the protective box; rotating the workpiece, carrying out the friction welding for the titanium alloy and zirconium alloy connector in the argon protective box, and naturally cooling the welding connector under the protection of the inert gas after the welding is ended. By adopting the gas protective friction welding method of the titanium alloy and zirconium special metal, the welding efficiency is high, convenience and flexibility in operation can be realized, the cost is low, and a welding connector with no crack and no brittle compound can be obtained.
Description
Technical field
The present invention relates to a kind of welding method of dissimilar non-ferrous metal, particularly relate to the gas shield friction welding method of a kind of titanium alloy and zircaloy, belong to welding technology field.
Background technology
Be used alone a kind of material in modern project and usually can not meet various requirement in practical application.Use the material of different performance under different operating conditions, can play the performance advantage of different materials, different-metal material welding structure is more and more subject to people's attention.The characteristics such as titanium alloy has linear expansion coefficient and elastic modelling quantity is little, excellent corrosion resistance, have been widely used in important load-carrying member.The important feature material that zircaloy becomes in nuclear industry and chemical engineering industry because having the advantage such as lower thermal neutron absorption cross section, good corrosion resisting property, but Zr alloy surface heat resistance and wearing no resistance, and price is more expensive, limits giving full play to of its potential.
Titanium alloy and zircaloy are connected to form the performance potential that dissimilar metal structure can play bi-material, have good application prospect in the field such as the energy, nuclear power.
Realize titanium alloy and zircaloy to weld difficulty very large.1) titanium alloy is oxidizable, and titanium generates TiO more than 600 DEG C
2, hinder interface cohesion, form brittle layer at weld seam and interface, increase the fragility of metal.2) thermal conductivity factor of titanium alloy and zircaloy and linear expansion coefficient differ greatly, and easily crack under the effect of weld heating and stress.3) titanium alloy and zircaloy all belong to firmly crisp and material that is plasticity difference, and the welding difficulty of both realizations interface cohesion is very large
Adopt Pervasion Weld Technology can realize the connection of titanium and zircaloy, but require diffusion in vacuum soldering equipment of good performance, very high requirement is had to the Surface Machining of connected piece and vacuum, and heating, insulation, cooling need longer time, welding efficiency is low, is particularly difficult to realize pipe fitting and rods Site Welding.Therefore, if can realize, titanium alloy is welded with the reliable of zircaloy round piece, advance titanium alloy and the heterostructural application of zircaloy to have important meaning to simplification.
Summary of the invention
The object of the invention is for the deficiencies in the prior art; the gas shield friction welding method of a kind of titanium alloy and zircaloy is proposed; adopt and can obtain that interface cohesion is good in this way, flawless, welding point without brittlement phase, titanium alloy and the abnormally-structured instructions for use aborning of zircaloy can be met.
The technical scheme that the present invention takes is:
A gas shield friction welding method for titanium alloy and zircaloy, comprises step as follows:
(1) joint of titanium alloy workpiece and zircaloy workpiece is carried out polishing or cleaning;
(2) be installed on friction welding apparatus by titanium alloy workpiece and zircaloy workpiece, banjo fixing butt jointing is placed in inert gas shielding case, and guard box leads to argon shield;
(3) rotational workpieces, in argon-filled protection case, carry out friction welding (FW) to titanium alloy and zircaloy joint, welding parameter is: rotating speed 1500 ~ 2500r/min, friction pressure 15MPa ~ 50MPa, fraction time 10s ~ 20s, top pressure 100MPa ~ 200MPa;
(4), after welding terminates, welding point naturally cools under inert gas shielding.
In the gas shield friction welding method of above-mentioned titanium alloy and zircaloy, titanium alloy workpiece and zircaloy workpiece are pipe fitting or rod-shaped workpiece, preferred diameter 20mm ~ 80mm.
In step (1), titanium alloy and zircaloy workpiece alkali wash are cleaned, weld in 2h after cleaning.Alkali wash cleaning step is, be the NaOH solution of 15% with volumetric concentration, clean welded part 10min ~ 15min being not less than under the room temperature condition of 15 DEG C, rinse with clear water afterwards, then be clean in the aqueous solution of nitric acid of 30% in volumetric concentration, after rinsing with clear water again, dry under 40 DEG C ~ 50 DEG C conditions.Described titanium alloy workpiece is preferably Ti-6Al-4V tubing or bar.Described zircaloy workpiece is preferably R60702 tubing or bar, and supply of material state is cold rolling+stress relief annealing.
Step (2) purity of argon is greater than 99.9%, argon flow amount 20L/min ~ 25L/min.
The present invention adopts the friction welding technological of inert gas shielding, realizes diameter 20mm ~ 80mm titanium alloy and is connected with zirconium alloy tube or the reliable of bar.Conventional friction welding technological does not have inert gas shielding; be difficult to use in the welding of titanium alloy and zircaloy; because titanium alloy and zircaloy are all firmly crisp and material that is plasticity difference, and titanium alloy is very easily oxidized, and cannot realize titanium alloy be connected with the reliable of zircaloy with conventional friction welding technology.
The titanium alloy adopting the present invention to propose and the gas shield friction welding method of zircaloy dissimilar metal, welding efficiency is high, flexible to operation, and cost is low, can obtain flawless, welding point without frangible compounds.Compared with conventional friction soldering method; the welding quality of the titanium alloy that the present invention proposes and zircaloy gas shield friction welding (FW) significantly improves; welding point tensile strength is not less than the tensile strength of titanium alloy mother metal, can meet the instructions for use to titanium alloy and zircaloy dissimilar metal component in production.
Detailed description of the invention
Further illustrate below in conjunction with specific embodiment.
Embodiment 1:
The gas shield friction welding (FW) of TC4 titanium alloy (Ti-6Al-4V) and zirconium alloy tube.The dimensions of TC4 titanium alloy pipe and R60702 zirconium alloy tube is diameter 50mm, wall thickness 6mm, length 80mm.
The processing step of concrete titanium alloy and zirconium alloy tube gas shield friction welding (FW) is as follows:
(1) before welding, sand papering is carried out, until polish metallic luster to the joint of titanium alloy and zirconium alloy tube.
(2) be installed on friction welding apparatus by titanium alloy and zirconium alloy tube workpiece, tubing banjo fixing butt jointing is placed in inert gas shielding case, and logical argon shield, purity of argon is greater than 99.9%, argon flow amount 20L/min.
(3) rotational workpieces, in argon-filled protection case, carry out friction welding (FW) to titanium alloy and zircaloy pipe fitting joint, welding parameter is: rotating speed 1800r/min, friction pressure 16MPa, fraction time 12s, top pressure 120MPa.
(4), after welding terminates, titanium alloy and zircaloy joint naturally cool under inert gas shielding in guard box.
The TC4 titanium alloy obtained and R60702 zircaloy friction welding joint are shaped well.Do not find the microdefect such as crackle, pore through low power magnifying glass and metallography microscope sem observation, meet the instructions for use of connected piece.
Embodiment 2:
The gas shield friction welding (FW) of TA15 titanium alloy and R60702 Zirconium alloy bar.The dimensions of TA15 titanium alloy rod bar and R60702 Zirconium alloy bar is diameter 40mm, length 120mm.
The processing step of concrete titanium alloy and Zirconium alloy bar gas shield friction welding (FW) is as follows:
(1) before welding, the joint alkali wash of pole shape titanium alloy and zircaloy is cleaned, cleaning step is: the aqueous solution taking percent by volume as 15%NaOH solution, titanium alloy and zircaloy part 12min is cleaned under the room temperature condition of 15 DEG C, rinse with clear water afterwards, then be clean in the aqueous solution of nitric acid of 30% in percent by volume, after rinsing with clear water again, dry under 40 DEG C of conditions.
(2) be installed on friction welding apparatus by titanium alloy and zircaloy rod-shaped workpiece, banjo fixing butt jointing is placed in inert gas shielding case.Guard box leads to argon gas (Ar) protection, and purity of argon is greater than 99.9%, argon flow amount 25L/min.
(3) rotational workpieces, in argon-filled protection case, carry out friction welding (FW) to titanium alloy and zirconium alloy bar straight coupling, welding parameter is: rotating speed 2200r/min, friction pressure 26MPa, fraction time 18s, top pressure 190MPa.
(4), after welding terminates, welding point naturally cools under argon shield in guard box.
The TA15 titanium alloy obtained by above-mentioned technique and R60702 Zirconium alloy bar joint are shaped well.Do not find the microdefect such as crackle, pore through low power magnifying glass and metallography microscope sem observation, connector area combines good, meets the requirement of connected piece operation technique.
Claims (6)
1. a gas shield friction welding method for titanium alloy and zircaloy, is characterized in that, comprise step as follows:
(1) joint of titanium alloy workpiece and zircaloy workpiece is carried out polishing or cleaning;
(2) be installed on friction welding apparatus by titanium alloy workpiece and zircaloy workpiece, banjo fixing butt jointing is placed in inert gas shielding case, and guard box leads to argon shield;
(3) rotational workpieces, in argon-filled protection case, carry out friction welding (FW) to titanium alloy and zircaloy joint, welding parameter is: rotating speed 1500 ~ 2500r/min, friction pressure 15MPa ~ 50MPa, fraction time 10s ~ 20s, top pressure 100MPa ~ 200MPa;
(4), after welding terminates, welding point naturally cools under inert gas shielding.
2. the gas shield friction welding method of a kind of titanium alloy according to claim 1 and zircaloy, is characterized in that, titanium alloy workpiece and zircaloy workpiece are pipe fitting or rod-shaped workpiece.
3. the gas shield friction welding method of a kind of titanium alloy according to claim 2 and zircaloy, is characterized in that, titanium alloy workpiece and zircaloy diameter of work 20mm ~ 80mm.
4. the gas shield friction welding method of a kind of titanium alloy according to claim 1 and zircaloy, is characterized in that, described titanium alloy workpiece is Ti-6Al-4V tubing or bar; Described zircaloy workpiece is R60702 tubing or bar.
5. the gas shield friction welding method of a kind of titanium alloy according to claim 1 and zircaloy; it is characterized in that; in step (1), titanium alloy and zircaloy workpiece alkali wash are cleaned; weld in 2h after cleaning; alkali wash cleaning step is: be the NaOH solution of 15% with volumetric concentration; clean welded part 10min ~ 15min being not less than under the room temperature condition of 15 DEG C; rinse with clear water afterwards; then be clean in the aqueous solution of nitric acid of 30% in volumetric concentration; after rinsing with clear water again, dry under 40 DEG C ~ 50 DEG C conditions.
6. the gas shield friction welding method of a kind of titanium alloy according to claim 1 and zircaloy, is characterized in that, step (2) purity of argon is greater than 99.9%, argon flow amount 20L/min ~ 25L/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510010432.5A CN104646821A (en) | 2015-01-08 | 2015-01-08 | Gas protective friction welding method of titanium alloy and zirconium alloy |
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| CN201510010432.5A CN104646821A (en) | 2015-01-08 | 2015-01-08 | Gas protective friction welding method of titanium alloy and zirconium alloy |
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| CN104646821A true CN104646821A (en) | 2015-05-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107639341A (en) * | 2017-11-14 | 2018-01-30 | 吉林大学 | High-performance spin friction Welding for different alloys |
| CN114289917A (en) * | 2022-01-21 | 2022-04-08 | 中机智能装备创新研究院(宁波)有限公司 | Induction friction composite brazing method and preparation method of dissimilar alloy workpiece |
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| CN1357426A (en) * | 2000-12-08 | 2002-07-10 | 富士乌兹克斯株式会社 | Friction welding process of jointing different metal material |
| CN2511426Y (en) * | 2001-11-24 | 2002-09-18 | 安达市庆升摩擦焊油管修复厂 | Manufacture of oil pipe and external thickened short joint by friction welding |
| CN1726301A (en) * | 2002-10-21 | 2006-01-25 | 卡伯特公司 | Method of forming a sputtering target assembly and assembly made therefrom |
| CN1836256A (en) * | 2003-07-16 | 2006-09-20 | 卡伯特公司 | Thermography test method and apparatus for bonding evaluation in sputtering targets |
| CN103769802A (en) * | 2004-08-02 | 2014-05-07 | Ati资产公司 | Corrosion-resistant fluid conduting part, device using same, and method for replacing same |
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2015
- 2015-01-08 CN CN201510010432.5A patent/CN104646821A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1357426A (en) * | 2000-12-08 | 2002-07-10 | 富士乌兹克斯株式会社 | Friction welding process of jointing different metal material |
| CN2511426Y (en) * | 2001-11-24 | 2002-09-18 | 安达市庆升摩擦焊油管修复厂 | Manufacture of oil pipe and external thickened short joint by friction welding |
| CN1726301A (en) * | 2002-10-21 | 2006-01-25 | 卡伯特公司 | Method of forming a sputtering target assembly and assembly made therefrom |
| CN1836256A (en) * | 2003-07-16 | 2006-09-20 | 卡伯特公司 | Thermography test method and apparatus for bonding evaluation in sputtering targets |
| CN103769802A (en) * | 2004-08-02 | 2014-05-07 | Ati资产公司 | Corrosion-resistant fluid conduting part, device using same, and method for replacing same |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107639341A (en) * | 2017-11-14 | 2018-01-30 | 吉林大学 | High-performance spin friction Welding for different alloys |
| CN114289917A (en) * | 2022-01-21 | 2022-04-08 | 中机智能装备创新研究院(宁波)有限公司 | Induction friction composite brazing method and preparation method of dissimilar alloy workpiece |
| CN114289917B (en) * | 2022-01-21 | 2023-08-25 | 中国机械总院集团宁波智能机床研究院有限公司 | Induction friction composite brazing method and preparation method of dissimilar alloy workpiece |
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Application publication date: 20150527 |