CN103817398A - Welding process capable of preventing missed welding of pipe parts - Google Patents
Welding process capable of preventing missed welding of pipe parts Download PDFInfo
- Publication number
- CN103817398A CN103817398A CN201310670503.5A CN201310670503A CN103817398A CN 103817398 A CN103817398 A CN 103817398A CN 201310670503 A CN201310670503 A CN 201310670503A CN 103817398 A CN103817398 A CN 103817398A
- Authority
- CN
- China
- Prior art keywords
- welding
- pipe
- weldering
- parts
- catheter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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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
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
- B23K9/0282—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/162—Arc welding or cutting making use of shielding gas making use of a stationary fluid
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/23—Arc welding or cutting taking account of the properties of the materials to be welded
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/14—Titanium or alloys thereof
Abstract
The invention discloses a welding process capable of preventing missed welding of pipe parts. The welding process includes the following steps: (1), scrubbing to-be butted pipe parts; (2), mounting hollow quartz glass pipes with the diameters 0.5-2mm smaller than the diameters of inner pipe cavities; (3), fixing the parts on a fixing fixture of a vacuum argon-filling welding box to weld; (4), washing the parts after the quartz glass pipes completely dissolve; (5), inspecting passing ability of pipes by a specified steel test balls. The welding process has the advantages that the problem of missed welding of the pipes is solved, forming ratio of the pipe parts is increased, welding quality is not affected, and product acceptability is improved; quartz is stable at the high temperature and does not react with titanium alloy, so that inner and outer surfaces of welding seams are stable and uniform, comparison uniformity is high, labor intensity of workers is reduced, and production efficiency is improved.
Description
Technical field
The present invention relates to a kind of welding procedure that prevents that pipe part weldering from leaking, relate to especially the welding procedure that the weldering of titanium alloy tubing part is leaked, belong to catheter weld parts technical field.
Background technology
GTAW in the time that welding quality requires high, shape and baroque part with workman's level of skill, the mood of working, surrounding environment, equipment operation condition, the physics of material itself, chemical property are in close relations.In actual production, design drawing requires to guarantee after titanium alloy catheter weld parts that through ball rate is 100% and adopts single welding, double-faced forming; Must guarantee that face of weld color is silvery white simultaneously, the defect such as do not allowed pore, be mingled with, difficulty of processing is very big.Therefore, in the time carrying out this type of titanium alloy catheter weld parts, for guaranteeing qualified quantity, only increase input, common demand and input ratio are 1:10, and first-time qualification rate is only 10% left and right.This becomes the thorny problem in batch production always, has not only caused a large amount of waste products, has strengthened workman's labour intensity, but also directly affect volume production institute planned.
Existing such part conventionally adopts single face welding and double face shaping in the time of welding, disposable 100% through welding, does not allow to exceed weldering spill tag standard, and difficulty is large, product percent of pass is low, especially in the time of the catheter part of welding minor diameter, human factor impact is large, and part moment, upper temperature was fast, inner chamber very easily welds leakage, cause inner cavity of component cross-sectional area less than normal, affect its inner chamber design given flow value, cannot meet the relevant parameter under duty.
Summary of the invention
The object of the present invention is to provide a kind of welding procedure that prevents that pipe part weldering from leaking, overcome the deficiencies in the prior art, can solve conduit weldering leakage problem, the weldering of catheter part can be leaked to ratio of briquetting and improve, and can not affect welding quality, improve the qualification rate of product.
The object of the invention is to be achieved through the following technical solutions: a kind of welding procedure that prevents that pipe part weldering from leaking, it comprises following steps:
(1), by the catheter part scrub of needs docking;
(2), installs than the hollow quartz-glass pipe of the little 0.5～2mm of conduit cavity in the commissure of catheter part docking, also soldering part of the symmetrical location of argon arc welding by hand then;
(3), part is fixed on the stationary fixture of vacuum argon filling welding case and welds and obtain integrally welded part, 1700～2500 ℃ of welding temperatures;
(4), by taking out in casing after integrally welded part cool to room temperature, carry out alkali cleaning processing until quartz glass tube dissolves completely, then clean up;
(5), with regulation test ball check conduit can the general character.
The external diameter of described hollow quartz-glass pipe is no more than the minimum place of titanium alloy catheter part internal diameter.
Described alkali cleaning processing refers to that just integrally welded part inserts hot NaOH soda bath and boil and wash 2～4 hours.
Beneficial effect of the present invention is: by quartz glass tube being installed at place to be welded, solve conduit weldering leakage problem, ratio of briquetting is leaked in the weldering that has improved catheter part, and can not affect welding quality, improve the qualification rate of product, quartz is at high temperature stable simultaneously, there is not chemical reaction with titanium alloy, weld seam surfaces externally and internally stable and uniform, contrast uniformity is strong, has reduced workman's labour intensity, has improved production efficiency, this technology can also be applied to, in the stainless steel and high-temperature alloy steel in military products production, expand its scope of application.
Accompanying drawing explanation
Fig. 1 is the assembling schematic diagram of conduit of the present invention and union elbow;
Fig. 2 is hollow quartz-glass pipe scheme of installation of the present invention
Fig. 3 is the schematic diagram after the present invention welds;
Fig. 4 is the schematic diagram after hollow quartz-glass pipe of the present invention dissolves.
Wherein, 1-titanium alloy catheter part, 2-tube connector joint, 3-hollow quartz-glass pipe, the catheter part that 4-is integrally welded.
The specific embodiment
Further describe technical scheme of the present invention below in conjunction with accompanying drawing, but described in claimed scope is not limited to.
Prevent the welding procedure that pipe part weldering is leaked, it comprises following steps:
It comprises following steps:
(1), titanium alloy catheter part 1 and tube connector joint 2 scrubs of butt weld will be needed;
(2), as shown in Figure 1, Figure 2, install than the hollow quartz-glass pipe 3 of the little 0.5～2mm of conduit cavity in titanium alloy catheter part 1 and the junction of tube connector joint 2 butt welds, then argon arc welding is symmetrical by hand locates and soldering part;
(3), as Fig. 3, titanium alloy catheter part 1 is fixed on the stationary fixture of vacuum argon filling welding case and welds and obtain integrally welded catheter part 4,1700～2500 ℃ of welding temperatures;
(4), as Fig. 4, after all-in-one-piece catheter part to be welded 4 cool to room temperature, in casing, take out, deliver to surface treatment workshop and boil and wash 2～4 hours until quartz glass tube dissolves completely with hot NaOH soda bath, then clean up;
(5), check conduit with the test ball of regulation can the general character, guarantee that qualification rate is not less than 95%.
The external diameter of described hollow quartz-glass pipe is no more than the minimum place of titanium alloy catheter part internal diameter.
The titanium alloy catheter part that the present invention makes dissects rear inspection weld seam inner surface, and accessory inner surface is smooth evenly to be dissectd after part being heat-treated simultaneously, carries out metallographic examination, part even tissue.
Prior art adopts high temperature resistance, easily the material removed is as filler, and while preventing from welding, molten bath subsides too much, causes weldering leakage to exceed standard, and affects through ball rate.And the anti-fusion temperature of the hollow quartz-glass pipe that the present invention adopts is more than 2800 degree, the fusion temperature of the titanium alloy (TA15) using is more than 1600 degree, in welding process, the temperature resistance of glass tube is effective, the coefficient of expansion is little, at high temperature stablizing and can guarantee certain intensity, is the good selection of welding filler.
Claims (3)
1. prevent the welding procedure that pipe part weldering is leaked, it is characterized in that: it comprises following steps:
(1), by the catheter part scrub of needs docking;
(2), installs than the hollow quartz-glass pipe of the little 0.5～2mm of conduit cavity in the commissure of catheter part docking, also soldering part of the symmetrical location of argon arc welding by hand then;
(3), part is fixed on the stationary fixture of vacuum argon filling welding case and welds and obtain integrally welded part, 1700～2500 ℃ of welding temperatures;
(4), by taking out in casing after integrally welded part cool to room temperature, carry out alkali cleaning processing until quartz glass tube dissolves completely, then clean up;
(5), with regulation test ball check conduit can the general character.
2. the welding procedure that prevents that pipe part weldering from leaking according to claim 1, is characterized in that: the external diameter of described hollow quartz-glass pipe is no more than the minimum place of titanium alloy catheter part internal diameter.
3. the welding procedure that prevents that pipe part weldering from leaking according to claim 1, is characterized in that: described alkali cleaning processing refers to that just integrally welded part inserts hot NaOH soda bath and boil and wash 2～4 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310670503.5A CN103817398B (en) | 2013-12-10 | 2013-12-10 | A kind of welding procedure that prevents that pipe part weldering from leaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310670503.5A CN103817398B (en) | 2013-12-10 | 2013-12-10 | A kind of welding procedure that prevents that pipe part weldering from leaking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103817398A true CN103817398A (en) | 2014-05-28 |
| CN103817398B CN103817398B (en) | 2016-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310670503.5A Active CN103817398B (en) | 2013-12-10 | 2013-12-10 | A kind of welding procedure that prevents that pipe part weldering from leaking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103817398B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104972213A (en) * | 2015-05-25 | 2015-10-14 | 北京控制工程研究所 | Installing and clamping tool and method for conducting capillary tube welding through installing and clamping tool |
| CN114473200A (en) * | 2022-03-08 | 2022-05-13 | 中国航空制造技术研究院 | Laser welding inner wall protection system and welding method for small-diameter pipeline |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5764490A (en) * | 1980-10-06 | 1982-04-19 | Mitsubishi Heavy Ind Ltd | Circumfeential automatic tig welding device |
| SU944838A1 (en) * | 1980-07-10 | 1982-07-23 | Предприятие П/Я В-2679 | Method and apparatus for connecting tube to end part |
| US6484540B1 (en) * | 1998-10-16 | 2002-11-26 | Heraeus Quarzglas Gmbh & Co. Kg | Method for welding a quartz glass tube for use as an optical fiber preform |
| CN101200013A (en) * | 2007-12-03 | 2008-06-18 | 中国核动力研究设计院 | Copper and stainless steel dissimilar metal water adapter vacuum brazing technology method |
| CN101708566A (en) * | 2009-11-30 | 2010-05-19 | 上海锅炉厂有限公司 | Backing applied to small-caliber steel pipe welding |
| CN102848057A (en) * | 2012-09-27 | 2013-01-02 | 中国化学工程第三建设有限公司 | Method for reworking welding seam of aluminum and aluminum alloy |
-
2013
- 2013-12-10 CN CN201310670503.5A patent/CN103817398B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU944838A1 (en) * | 1980-07-10 | 1982-07-23 | Предприятие П/Я В-2679 | Method and apparatus for connecting tube to end part |
| JPS5764490A (en) * | 1980-10-06 | 1982-04-19 | Mitsubishi Heavy Ind Ltd | Circumfeential automatic tig welding device |
| US6484540B1 (en) * | 1998-10-16 | 2002-11-26 | Heraeus Quarzglas Gmbh & Co. Kg | Method for welding a quartz glass tube for use as an optical fiber preform |
| CN101200013A (en) * | 2007-12-03 | 2008-06-18 | 中国核动力研究设计院 | Copper and stainless steel dissimilar metal water adapter vacuum brazing technology method |
| CN101708566A (en) * | 2009-11-30 | 2010-05-19 | 上海锅炉厂有限公司 | Backing applied to small-caliber steel pipe welding |
| CN102848057A (en) * | 2012-09-27 | 2013-01-02 | 中国化学工程第三建设有限公司 | Method for reworking welding seam of aluminum and aluminum alloy |
Non-Patent Citations (1)
| Title |
|---|
| 叶志平: "简单的焊管衬垫", 《机械工人.热加工》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104972213A (en) * | 2015-05-25 | 2015-10-14 | 北京控制工程研究所 | Installing and clamping tool and method for conducting capillary tube welding through installing and clamping tool |
| CN114473200A (en) * | 2022-03-08 | 2022-05-13 | 中国航空制造技术研究院 | Laser welding inner wall protection system and welding method for small-diameter pipeline |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103817398B (en) | 2016-05-04 |
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Address after: 550014 No. 1111 Liyang Road, Baiyun District, Guiyang City, Guizhou Province Patentee after: Chinese Hangfa Guizhou Liyang aero Power Co. Ltd. Address before: 561102 Science and Technology Management Department of 5 Mailbox in Pingba County, Guizhou Province Patentee before: Guizhou Liyang Aerospace Power Co., Ltd. |
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