CN101274397B - Promoting agent for nickel-base high-temperature alloy TIG weld and method of use thereof - Google Patents
Promoting agent for nickel-base high-temperature alloy TIG weld and method of use thereof Download PDFInfo
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- CN101274397B CN101274397B CN2008100645468A CN200810064546A CN101274397B CN 101274397 B CN101274397 B CN 101274397B CN 2008100645468 A CN2008100645468 A CN 2008100645468A CN 200810064546 A CN200810064546 A CN 200810064546A CN 101274397 B CN101274397 B CN 101274397B
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Abstract
The invention provides an active agent used for the TIG welding of nickel-base alloy, which consists of 40 to 45 parts by weight (pbw) of AlF3, 10 to 15pbw of MgF2, 5 to 10pbw of SrF2, 15 to 20pbw ofMoO3, 2 to 5pbw of TiO2, 5 to 10pbw of Ti2O3 and 3 to 7pbw of NiO. When in use: 1. the surface of plate material are treated with the removal of oxides and oil stains, which removes the oxidized filmof the surface of a test piece by polishing with a steel wire brush to reveal metal luster; 2. the test piece is wiped by using absolute ethanol or acetone to remove the oil stains and dried; 3. the surface of the test piece is evenly coated with suspension liquid made by mixing and stirring the powder active agent with the absolute ethanol by a flat brush; 4. after the absolute ethanol volatilizes completely, the welding can be carried out, and the appropriate coating thickness can cover a substrate. The active agent can increase welding penetration under the condition that the thermal inputamount of the welding is reduced, has less welding defects and can enhance welding efficiency at the same time.
Description
(1) technical field
The invention belongs to solder technology, specifically be used for nickel base superalloy TIG welding.
(2) technical background
At present; argon tungsten-arc welding is used very extensive; almost can be used for the welding of all metals, conventional TIG weldering because have welding arc stablility, under inert gas shielding, can guarantee inherent quality, be shaped attractive in appearance, be adapted at welding the bigger advantages such as place use of difficulty.But conventional TIG weldering single-run welding fusion penetration is shallow, and when the welding nickel-base alloy, the fusion penetration of single-run welding only has 1.5mm, only is suitable for welding thin plate.If increase the electric current input, molten wide meeting becomes very wide, and the fusion penetration increase is not obvious.Particularly, when the cut deal of welding more than the 3mm, need bevel, multi-pass weldings such as silk filling just can be finished, and welding efficiency is low, and weld defect is also many, and particularly welding deformation is big.
(3) summary of the invention
The object of the present invention is to provide under a kind of condition that can reduce the sweating heat input quantity increases welding penetration, and less weld defect improves a kind of activating agent that is used for nickel-base alloy TIG welding of welding efficiency simultaneously.
The object of the present invention is achieved like this: it is by MgF
2, AlF
3, SrF
2, MoO
3, TiO
2, Ti
2O
3Form with NiO, its weight ratio is: AlF
340-45 part, MgF
210-15 part, SrF
25-10 part, MoO
315-20 part, TiO
22-5 part, Ti
2O
35-10 part and NiO 3-7 part.
The present invention also has some technical characterictics like this:
1, described weight ratio is: AlF
345 parts, MgF
215 parts, SrF
25 parts, MoO
315 parts, TiO
23 parts, Ti
2O
37 parts of 10 parts, NiO.
Another object of the present invention is to provide a kind of using method of this activating agent: 1, plate surface is removed oxide, greasy dirt processing, at first remove the oxide-film on test specimen surface, expose metallic luster with the wire brush polishing; 2, with absolute ethyl alcohol or acetone wiping, the removing greasy dirt also dries; 3, Powdered activating agent is mixed into suspension with absolute ethyl alcohol, suspension evenly is coated in the test specimen surface with flat hairbrush; 4, treat that absolute ethyl alcohol volatilizees fully after, just can weld, the thickness of coating is advisable to cover matrix.
Applied activating agent of the present invention and compare with common TIG welding under identical weld procedure specification, fusion penetration can increase by 260%, and the sheet material that 5-6mm is thick can a through welding (need not bevel).And appearance of weld is good, and hot strength accounts for about 95% of mother metal.
Maximum characteristics of the present invention are: when welding current was identical, fusion penetration had increased by 260%, had just reduced the heat input of workpiece, and the possibility of weld defects generations such as weld crack, welding deformation, grain growth reduces significantly like this.The hot strength of weld seam accounts for about 95% of mother metal.
(4) description of drawings
Fig. 1 is that conventional TIG and A-TIG welding effect compare schematic diagram;
Fig. 2 is uncoated activating agent melting pool shape;
Fig. 3 is for applying the shape in activating agent molten bath.
(5) specific embodiment
The present invention is further illustrated below in conjunction with the drawings and specific embodiments:
Embodiment 1:
The composition of present embodiment activating agent is as follows: AlF
345 parts, MgF
215 parts, SrF
25 parts, MoO
315 parts, TiO
23 parts, Ti
2O
37 parts of 10 parts, NiO.
Before soldering test, at first remove the oxide-film on test specimen surface with the wire brush polishing, expose metallic luster; Compare welding effect for convenience, will weld plate as shown in Figure 1 and be divided into two zones, wherein, a zone applies activating agent and carries out the A-TIG. welding, and another part carries out general T IG welding.Powdered activating agent is mixed into suspension with absolute ethyl alcohol, suspension evenly is coated in the test specimen surface with flat hairbrush.After treating that absolute ethyl alcohol volatilizees fully, just can weld.Coated weight is a principle with whole covering matrixes generally, and its welding conditions are as shown in the table:
Table 1 weld procedure specification
Effect analysis:
1, melting pool shape
During uncoated activating agent, its melting pool shape as shown in Figure 2, fusion penetration is more shallow, and is about about 1.7mm, molten wide bigger greatly.Even increasing electric current, fusion penetration does not still increase, molten wide then obviously increase.And crystal grain significantly increases.After the coating activating agent.Melting pool shape as shown in Figure 3, fusion penetration is significantly increased as can be seen.Molten wide narrowing down.
2, appearance of weld
After applying activating agent, appearance of weld is good, and weld seam is straight, does not have the phenomenon of undercut, molten wide narrowing down, and the surface of weld seam is very smooth.
Embodiment 2:
The composition of present embodiment activating agent is as follows: AlF
340 parts, MgF
210 parts, SrF
210 parts, MoO
320 parts, TiO
25 parts, Ti
2O
35 parts of 10 parts and NiO.Use is with embodiment 1.
Embodiment 3:
The composition of present embodiment activating agent is as follows: AlF
342 parts, MgF
215 parts, SrF
28 parts, MoO
317 parts, TiO
23 parts, Ti
2O
35 parts of 10 parts and NiO.Use is with embodiment 1.
Embodiment 4:
The composition of present embodiment activating agent is as follows: AlF
345 parts, MgF
212 parts, SrF
210 parts, MoO
315 parts, TiO
25 parts, Ti
2O
33 parts of 10 parts and NiO.Use is with embodiment 1.
Claims (2)
1. an activating agent that is used for nickel-base alloy TIG welding is characterized in that it is by MgF
2, AlF
3, SrF
2, MoO
3, TiO
2, Ti
2O
3Form with NiO, its weight ratio is: AlF
340-45 part, MgF
210-15 part, SrF
25-10 part, MoO
315-20 part, TiO
22-5 part, Ti
2O
31O part and NiO 3-7 part.
2. a kind of activating agent that is used for nickel-base alloy TIG welding according to claim 1 is characterized in that described weight ratio is: AlF
345 parts, MgF
215 parts, SrF
25 parts, MoO
315 parts, TiO
23 parts, Ti
2O
37 parts of 10 parts, NiO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100645468A CN101274397B (en) | 2008-05-21 | 2008-05-21 | Promoting agent for nickel-base high-temperature alloy TIG weld and method of use thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100645468A CN101274397B (en) | 2008-05-21 | 2008-05-21 | Promoting agent for nickel-base high-temperature alloy TIG weld and method of use thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101274397A CN101274397A (en) | 2008-10-01 |
| CN101274397B true CN101274397B (en) | 2010-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100645468A Expired - Fee Related CN101274397B (en) | 2008-05-21 | 2008-05-21 | Promoting agent for nickel-base high-temperature alloy TIG weld and method of use thereof |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101947703B (en) * | 2010-10-08 | 2012-07-04 | 中国航空工业集团公司北京航空制造工程研究所 | Active welding flux for high-temperature alloy fusion welding and preparation method thereof |
| CN102672370A (en) * | 2012-06-01 | 2012-09-19 | 江苏科技大学 | Multi-component active soldering flux for aluminum and aluminum alloy tungsten argon arc welding and preparation method for multi-component active soldering flux |
| CN103769773B (en) * | 2012-10-19 | 2016-03-09 | 上海船舶工艺研究所 | A kind of activating agent for argon tungsten-arc welding and using method thereof |
| CN103962752B (en) * | 2013-05-14 | 2017-04-05 | 中车青岛四方机车车辆股份有限公司 | A kind of activating agent and using method for weathering steel MAG welding |
| CN109732240A (en) * | 2019-03-19 | 2019-05-10 | 常州工学院 | A kind of activating agent and its application method for 2219 alloyed aluminium variable polarity TIG welds |
| CN110328492B (en) * | 2019-05-23 | 2022-03-11 | 中国人民解放军第五七一九工厂 | A-TIG welding repair compound method for long cracks of aero-engine turbine rear casing support plate |
| CN114535867B (en) * | 2022-02-23 | 2022-09-20 | 哈尔滨焊接研究院有限公司 | Active agent for titanium alloy laser wire filling surfacing cladding and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035073A (en) * | 1988-02-16 | 1989-08-30 | 福建师范大学 | Aluminium and aluminum alloy soft soldering scaling powder |
| CN1439479A (en) * | 2002-03-29 | 2003-09-03 | 甘肃工业大学 | Active agent for stainless steel tungsten argon arc welding |
-
2008
- 2008-05-21 CN CN2008100645468A patent/CN101274397B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035073A (en) * | 1988-02-16 | 1989-08-30 | 福建师范大学 | Aluminium and aluminum alloy soft soldering scaling powder |
| CN1439479A (en) * | 2002-03-29 | 2003-09-03 | 甘肃工业大学 | Active agent for stainless steel tungsten argon arc welding |
Non-Patent Citations (2)
| Title |
|---|
| 林三宝,杨春利,刘凤尧,吴林.不锈钢TIG焊活性剂对焊缝性能的影响.哈尔滨工业大学学报第34卷 第3期.2002,第34卷(第3期),第308-311页. |
| 林三宝,杨春利,刘凤尧,吴林.不锈钢TIG焊活性剂对焊缝性能的影响.哈尔滨工业大学学报第34卷 第3期.2002,第34卷(第3期),第308-311页. * |
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