CN105234526A - Welding process of titanium alloy graphite backing - Google Patents
Welding process of titanium alloy graphite backing Download PDFInfo
- Publication number
- CN105234526A CN105234526A CN201510779556.XA CN201510779556A CN105234526A CN 105234526 A CN105234526 A CN 105234526A CN 201510779556 A CN201510779556 A CN 201510779556A CN 105234526 A CN105234526 A CN 105234526A
- Authority
- CN
- China
- Prior art keywords
- welding
- graphite
- backing
- titanium alloy
- frock
- 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.)
- Pending
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Classifications
-
- 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
- B23K9/035—Seam welding; Backing means; Inserts with backing means disposed under the seam
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a welding process of a titanium alloy graphite backing. The welding process comprises a step 1 of designing and fabricating a graphite welding backing fixture according to a titanium alloy welded structure, a step 2 of performing drying and degassing treatments on the graphite welding backing fixture, a step 3 of assembling the graphite welding backing fixture in an inner cavity of titanium alloy welded structure part, a step 4 of carrying out welding, and a step 5 of crushing the graphite welding backing fixture after welding and taking out graphite fragments, and then finishing the welding process of the titanium alloy graphite backing. The welding process of the titanium alloy graphite backing is applicable to the welding of one side welding forced back shaping of complex and special-shaped titanium alloy structures, and capable of improving a back shaping effect.
Description
Technical field
The invention belongs to the technical field of welding procedure, be specifically related to a kind of titanium alloy graphite backing welding technique.
Background technology
Titanium alloy one side welding with back formation has two kinds of forming modes: free forming and pressure are shaped.Free forming is that the back side of weld seam does not add any support material, leaks and form sealing run under only relying on the surface tension of deposite metal to prevent molten bath.Free forming requires that workpiece gap is reasonable, gap too small being difficult to ensures through welding, the defects such as excesssive gap then easily burns, titanium alloy material is welded, this point is particularly outstanding, titanium alloy welding requires that gap is slightly large, but molten titanium alloy flowability is good, is easy to burn or weld leak large situation.In addition, very strict to welding process requirement during free forming, the normalization of technique not only affects the stressing conditions in molten bath, also affects volume and the shape in molten bath simultaneously.Whether welding procedure directly determines to there will be lack of penetration or the defect such as to burn, so weldquality is difficult to ensure during free forming.When forcing to be shaped, back of weld is added with and sets off material, as shown in Figure 1, due to the existence of support material and the existence of liner, makes molten pool metal also be unlikely to when workpiece burns to run off.Force shaping butt joint clearance requirement not have free forming strict, the welding wider range be suitable for, weldquality is easy to ensure simultaneously.The quality of liner enclosed welding seam, except outside the Pass having with technological parameter and welding conditions, has very large relation with the shape of liner itself and performance.Current titanium alloy welding frock backing many employings Cu alloy material, and according to product structure form, the welding backing frock of design specialized.
Titanium alloy welding backing frock is adopted to have following shortcoming:
1, complex structure, cost are high;
2, for complicated, abnormally-structured realization difficulty;
3, for thick-wall titanium alloy Welding Structure, for ensureing through welding, need reserve assemble welding gap, this situation can not adopt the welding backing of copper and other metal material;
Summary of the invention
In view of this, the invention provides a kind of titanium alloy graphite backing welding technique, complexity can be applicable to, the single welding of abnormally-structured titanium alloy structure forces the welding of back-welding shape, improve Titanium Alloy Welds back-welding shape effect.
Step one, by titanium alloy welding structural design and processing graphite welding backing frock;
Step 2, oven dry degassing processing is carried out to graphite welding backing frock;
Step 3, graphite is welded backing frock be assembled to titanium alloy welding structural member inner chamber;
Step 4, enforcement welding;
After step 5, welding, graphite is welded backing frock and smash taking-up graphite scrap.
Further, in step one, design graphite welding backing frock is specially: guarantee that graphite welding backing frock and place to be welded match, and arranges weak structure in graphite welding backing frock, takes out so that postwelding destroys.
Beneficial effect:
The holder that the present invention has graphite to weld backing frock due to the titanium alloy product back side serves as a contrast, there is not the problem of burn-through, therefore can select larger welding current, fusion penetration can reach gap clearance root, ensure that the shaping at the backing run back side is smooth, even, and significantly reduce welding operation difficulty.
Accompanying drawing explanation
Fig. 1 is that titanium alloy welding forces formed liners frock schematic diagram.
Fig. 2 is titanium alloy graphite backing of the present invention welding embodiment schematic diagram.
Fig. 3 is the A-A generalized section of Fig. 2.
Fig. 4 is the B-B generalized section of Fig. 2.
Wherein, 1-product to be welded, 2-graphite backing I, 3-graphite backing II.
Detailed description of the invention
To develop simultaneously embodiment below in conjunction with accompanying drawing, describe the present invention.
The invention provides a kind of titanium alloy graphite backing welding technique, complexity can be applicable to, the single welding of abnormally-structured titanium alloy structure forces the welding of back-welding shape, improve Titanium Alloy Welds back-welding shape effect.
Step one, by titanium alloy welding structural design and processing graphite welding backing frock; Design graphite welding backing frock is specially: guarantee that graphite welding backing frock and place to be welded match, and arranges weak structure in graphite welding backing frock, takes out so that postwelding destroys.
Step 2, oven dry degassing processing is carried out to graphite welding backing frock; Before Product jointing, degassing processing need be carried out to graphite backing frock, to ensure titanium alloy welding effect.
Step 3, graphite is welded backing frock be assembled to titanium alloy welding structural member inner chamber;
Step 4, enforcement welding;
After step 5, welding, graphite is welded backing frock and smash taking-up graphite scrap.
As shown in Figure 2, Figure 3 and Figure 4, for the graphite backing designed according to shape of product, as can be seen from the figure, this product is irregular square tube docking structure, and weld seam both sides profile is shunk, backing is welded as adopted metal structure, then need the taking-up considering postwelding frock, thus make the complex structure welding backing, owing to adopting graphite backing technique, thus simplify the structure of welding backing, reduce production, manufacturing cost.
In sum, these are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. a titanium alloy graphite backing welding technique, is characterized in that, comprise the following steps:
Step one, by titanium alloy welding structural design and processing graphite welding backing frock;
Step 2, oven dry degassing processing is carried out to graphite welding backing frock;
Step 3, graphite is welded backing frock be assembled to titanium alloy welding structural member inner chamber;
Step 4, enforcement welding;
After step 5, welding, graphite is welded backing frock and smash taking-up graphite scrap, complete titanium alloy graphite backing welding procedure.
2. a kind of titanium alloy graphite backing welding technique as claimed in claim 1, it is characterized in that, in step, design graphite welding backing frock is specially: guarantee that graphite welding backing frock and place to be welded match, and weak structure is set in graphite welding backing frock, takes out so that postwelding destroys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510779556.XA CN105234526A (en) | 2015-11-13 | 2015-11-13 | Welding process of titanium alloy graphite backing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510779556.XA CN105234526A (en) | 2015-11-13 | 2015-11-13 | Welding process of titanium alloy graphite backing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105234526A true CN105234526A (en) | 2016-01-13 |
Family
ID=55032481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510779556.XA Pending CN105234526A (en) | 2015-11-13 | 2015-11-13 | Welding process of titanium alloy graphite backing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105234526A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105537735A (en) * | 2016-03-08 | 2016-05-04 | 哈尔滨东安发动机（集团）有限公司 | Repair welding method for magnesium alloy casting oil way |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3201492A1 (en) * | 1982-01-20 | 1983-09-08 | N-H-Design, 7520 Bruchsal | Method of protecting weld roots from burning |
| GB2446380A (en) * | 2007-02-08 | 2008-08-13 | Saipem Spa | Back Support Pad |
| CN201711716U (en) * | 2010-07-23 | 2011-01-19 | 中化二建集团有限公司 | Pipeline welding inner liner |
| CN203109412U (en) * | 2013-01-29 | 2013-08-07 | 广东禅涛钢结构有限公司 | Steel tube longitudinal weld seam welding device |
-
2015
- 2015-11-13 CN CN201510779556.XA patent/CN105234526A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3201492A1 (en) * | 1982-01-20 | 1983-09-08 | N-H-Design, 7520 Bruchsal | Method of protecting weld roots from burning |
| GB2446380A (en) * | 2007-02-08 | 2008-08-13 | Saipem Spa | Back Support Pad |
| CN201711716U (en) * | 2010-07-23 | 2011-01-19 | 中化二建集团有限公司 | Pipeline welding inner liner |
| CN203109412U (en) * | 2013-01-29 | 2013-08-07 | 广东禅涛钢结构有限公司 | Steel tube longitudinal weld seam welding device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105537735A (en) * | 2016-03-08 | 2016-05-04 | 哈尔滨东安发动机（集团）有限公司 | Repair welding method for magnesium alloy casting oil way |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160113 |