CN100335229C - Composite welding wire for welding red copper thick plate without preheating and its welding method - Google Patents
Composite welding wire for welding red copper thick plate without preheating and its welding method Download PDFInfo
- Publication number
- CN100335229C CN100335229C CNB2005100101639A CN200510010163A CN100335229C CN 100335229 C CN100335229 C CN 100335229C CN B2005100101639 A CNB2005100101639 A CN B2005100101639A CN 200510010163 A CN200510010163 A CN 200510010163A CN 100335229 C CN100335229 C CN 100335229C
- Authority
- CN
- China
- Prior art keywords
- welding
- red copper
- combined wire
- thick plate
- preheating
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Arc Welding In General (AREA)
Abstract
The present invention relates to a combined wire and a welding method thereof for welding red copper thick plates without preheating. Which relates to welding flux and a soldering method thereof for welding thick copper plates and solves the problems of the weld of the copper thick plates needs preheating, and welding seams easily have air holes and cracks. The combined wire for welding the red copper thick plates without preheating is composed of 66 to 99% of Cu and 1 to 34% of Ti by mass percent. The combined wire is formed by that one kind of the material wraps the other kind of the material. The method for welding the red copper thick plates without preheating has the following steps that the copper thick plates 3 to be welded are butted; mixed gas of nitrogen and argon is used for protection; the combined wire 4 is filled in the butted part of the copper thick plates 3; a welding torch uses an oscillatory method in weld. The combined wire and the welding method thereof of the present invention do not need preheating when the copper thick plates are welded and simultaneously eliminate the air holes and the cracks of the welding seams; the combined wire and the welding method thereof of the present invention have the characteristics of simple operation, energy saving, high efficiency and low cost.
Description
Technical field
The present invention relates to weld the scolder and the welding method thereof of thick copper coin.
Background technology
The purposes of copper and copper alloy is only second to iron and steel and aluminium.Because red copper thermal conductivity factor height is 391W/mK, is 1.5 times of aluminium, heat distributes from the weld zone rapidly in the welding process.When particularly red copper thick plate being welded, not only the molten bath forms difficulty, and is prone to fire check in the process of weld seam crystallisation by cooling.When being welded, thick-wall red copper spare has following point: 1, preheat temperature height (600～700 ℃) temperature height, and to guarantee carrying out continuously of welding process.The welding region high-temperature residence time is long like this, and input thermal capacity is big, and workman's working environment is very arduous, and simultaneously big, tissue of heat affected area scope and Weld Performance change greatly; 2, the alloying element evaporation is serious, and weld seam is hydrogeneous, oxygen amount height, and the zinc evaporation is serious, occurs defectives such as pore, crackle easily; 3, welding quality instability, appearance of weld is poor, and weld strength is low.MIG needs 600～700 ℃ of preheatings when being welded in the welding thick-wall red copper, and is very sensitive to oxygen element, and when the copper of welding deoxidation deficiency, the crackle and the pore of weld seam are more, and intensity is lower.The strength of joint of TIG soldering is low, weld hardness is high, plasticity, toughness, poor toughness.GIG melting welding: one, there is following point in argon shield in the welding to red copper thick plate: 1, preheat temperature height need be preheated to 600-700 ℃ usually and just can reach welding effect preferably; 2, the welding of slab generally all must be adopted multi-pass welding, and welding process should be carried out continuously, causes heat time heating time long, and the thermal capacity of input is big, and welding heat affected zone is bigger, simultaneously mother metal tissue and performance is also had certain influence; 3, appearance of weld is poor, is prone to fire check, and the weldment surface oxidation is serious, and the welding point distortion is bigger; 4, because welding engineering must at high temperature continue to carry out, make that workman's working environment is very abominable, production efficiency is low; Two, helium protection: the arc power during the helium protection is higher, is preheated to 300 ℃ during to thick plates and just can reaches welding effect preferably.But because 1800 yuan/bottle of helium prices are about 24 times of argon gas, so welding cost height when using the helium protection; Three, nitrogen protection: because do not form solid solution and compound between nitrogen and the copper, so theoretically, nitrogen protection can be used for welding red copper.During nitrogen protection, weld seam, the power of electric arc is very high, when not preheating, just can welding red copper.But from present soldering test, during nitrogen protection, a large amount of pore and crackle can occur in the weld seam, make the intensity of weld seam reduce.
Summary of the invention
The objective of the invention is needs preheating and weld seam to be prone to the problem of pore and crackle when solving welding red copper thick plate, and a kind of combined wire and welding method thereof that not needing to be used for the preheating welding red copper thick plate is provided, and the technical scheme that addresses the above problem is as follows:
The combined wire that the present invention is used for not needing the preheating welding red copper thick plate is by being made up of elemental copper and titanium, and red copper accounts for 66～99% by mass percentage, titanium accounts for 1～34%, and combined wire forms by a kind of parcel in two kinds of above-mentioned materials is another kind of.
Not needing to be used for the method for this copper slab of pre-thermal weld, this method adopts the following step:
A, the red copper thick plate butt joint that will weld;
B, the protection of employing nitrogen argon mixture gas;
C. fill combined wire in the docking section of red copper thick plate, red copper accounts for 66～99% to combined wire by mass percentage, titanium accounts for 1～34%;
The welding manner that welding gun adopts swing to advance when D. welding carries out.
Combined wire of the present invention and welding method thereof, when welding red copper thick plate 3, do not need preheating, the pore and the crackle of weld seam have been eliminated simultaneously, it also has simple to operate, energy-conservation, efficient, cost, and low (nitrogen is cheap, 35 yuan/bottle, be about 1/50 of helium, argon gas gets 1/2) characteristics, help the popularization in industrial production.
Description of drawings
Fig. 1 is the front view of combined wire, and Fig. 2 is the A-A cut-away view of Fig. 1, and Fig. 3 is the schematic diagram of welding method of the present invention.
The specific embodiment
The specific embodiment one: describe present embodiment in conjunction with Fig. 1.Being used for of present embodiment do not need the combined wire 4 of preheating welding red copper thick plate to be made up of elemental copper and titanium, and red copper accounts for 66～99% by mass percentage, titanium accounts for 1～34%, and combined wire 4 forms by a kind of parcel in two kinds of above-mentioned materials is another kind of.
The specific embodiment two: (as Fig. 2) of present embodiment not needing to be used for the combined wire 4 of preheating welding red copper thick plate to be formed by red copper outer 1 and titanium core 2, and red copper accounts for 99% by mass percentage, titanium accounts for 1%.Red copper shown in Figure 2 outer 1 and titanium core 2 can transpositions.
The specific embodiment three: being used for of present embodiment do not need the combined wire 4 of preheating welding red copper thick plate to be formed by red copper outer 1 and titanium core 2, and red copper accounts for 75% by mass percentage, titanium accounts for 25%.
The specific embodiment four: being used for of present embodiment do not need the combined wire 4 of preheating welding red copper thick plate to be formed by red copper outer 1 and titanium core 2, and red copper accounts for 66% by mass percentage, titanium accounts for 34%.
The specific embodiment five: present embodiment not needing to be used for the method for preheating welding red copper thick plate, red copper thick plate 3 butt joints that this method is just used the following step: A, will be welded; B, adopt the protection of nitrogen argon mixture gas, the volume ratio of nitrogen argon mixture gas to be, nitrogen accounts for 25～99%, argon gas accounts for 1～75%; Because do not form solid solution and compound between nitrogen and the copper; and during nitrogen protection; the power of electric arc is very high; so; adopt the nitrogen protection can finish welding to red copper thick plate 3 under the situation of not preheating, adding in the nitrogen that an amount of argon gas mixes is in order to solve nitrogen electric arc problem of unstable during high power again.C. fill combined wire 4 in the docking section of red copper thick plate, red copper accounts for 66～99% by mass percentage, titanium accounts for 1～34%; The combined wire of the present invention titanium that nitrogen contains in by combined wire 4 in the process of nitrogen argon mixture gas protection absorbs, so, avoided nitrogen in welding, to be prone to the problem of pore and crackle; The welding manner that welding gun 5 adopts swing to advance when D. welding carries out the better (see figure 3) of the effect of welding.
Adopt the performance indications after red copper thick plate 3 welding of the combined wire do not need the preheating welding red copper thick plate and welding method welding thereof to be:
Joint tensile strength 〉=80%;
Percentage elongation 〉=20%;
Speed of welding 1～6mm/s.
Claims (8)
1, not needing to be used for the combined wire of preheating welding red copper thick plate, to it is characterized in that it is made up of elemental copper and titanium, red copper accounts for 66～99% by mass percentage, titanium accounts for 1～34%, and combined wire (4) forms by a kind of parcel in two kinds of above-mentioned materials is another kind of.
2, the combined wire that not needing to be used for the preheating welding red copper thick plate according to claim 1, the skin that it is characterized in that combined wire are by red copper, and inner core is that titanium forms.
3, the combined wire that not needing to be used for the preheating welding red copper thick plate according to claim 1, the skin that it is characterized in that combined wire are by titanium, and inner core is that red copper forms.
4, the combined wire that not needing to be used for the preheating welding red copper thick plate according to claim 1 is characterized in that by mass percentage red copper accounts for 99%, titanium accounts for 1%.
5, the combined wire that not needing to be used for the preheating welding red copper thick plate according to claim 1 is characterized in that by mass percentage red copper accounts for 75%, titanium accounts for 25%.
6, the combined wire that not needing to be used for the preheating welding red copper thick plate according to claim 1 is characterized in that by mass percentage red copper accounts for 66%, titanium accounts for 34%.
7, not needing to be used for the method for preheating welding red copper thick plate, to it is characterized in that red copper thick plate (3) butt joint that this method adopts the following step: A, will weld; B, the protection of employing nitrogen argon mixture gas; C. fill combined wire (4) in the docking section of red copper thick plate (3), red copper accounts for 66～99% to combined wire (4) by mass percentage, titanium accounts for 1～34%; The welding manner that welding gun when D. welding (5) adopts swing to advance carries out.
8, the method that not needing to be used for the preheating welding red copper thick plate according to claim 7 is characterized in that the volume ratio of nitrogen argon mixture gas is, nitrogen accounts for 25～99%, argon gas accounts for 1～75%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100101639A CN100335229C (en) | 2005-07-08 | 2005-07-08 | Composite welding wire for welding red copper thick plate without preheating and its welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100101639A CN100335229C (en) | 2005-07-08 | 2005-07-08 | Composite welding wire for welding red copper thick plate without preheating and its welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1709633A CN1709633A (en) | 2005-12-21 |
| CN100335229C true CN100335229C (en) | 2007-09-05 |
Family
ID=35705959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100101639A Expired - Fee Related CN100335229C (en) | 2005-07-08 | 2005-07-08 | Composite welding wire for welding red copper thick plate without preheating and its welding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100335229C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101829860A (en) * | 2010-04-20 | 2010-09-15 | 哈尔滨工业大学 | Welding wire for unpreheated welding of red copper thick and large part and preparation method thereof |
| CN102513729A (en) * | 2012-01-04 | 2012-06-27 | 天津大学 | Aluminum deoxidizing welding wire used for carbon dioxide gas arc welding and preparation method thereof |
| CN106400003B (en) * | 2016-10-09 | 2018-08-31 | 青岛理工大学 | The coating of titanium nitride/copper titanium intermetallic compound enhancing for red copper surface |
| CN110480131A (en) * | 2019-08-28 | 2019-11-22 | 上海交通大学 | The protective gas and welding method of MIG welding |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5725288A (en) * | 1980-07-23 | 1982-02-10 | Hitachi Ltd | Method for welding thick copper plate |
| CN1445044A (en) * | 2003-04-17 | 2003-10-01 | 哈尔滨工业大学 | Method for red copper transition welding without preheating metal alloy |
| CN1562548A (en) * | 2004-04-14 | 2005-01-12 | 哈尔滨工业大学 | Micro melting soldering method of argon-shielded tungsten arc welding for thick plate of red copper without warming-up |
-
2005
- 2005-07-08 CN CNB2005100101639A patent/CN100335229C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5725288A (en) * | 1980-07-23 | 1982-02-10 | Hitachi Ltd | Method for welding thick copper plate |
| CN1445044A (en) * | 2003-04-17 | 2003-10-01 | 哈尔滨工业大学 | Method for red copper transition welding without preheating metal alloy |
| CN1562548A (en) * | 2004-04-14 | 2005-01-12 | 哈尔滨工业大学 | Micro melting soldering method of argon-shielded tungsten arc welding for thick plate of red copper without warming-up |
Non-Patent Citations (1)
| Title |
|---|
| 氩氮混合保护TIG焊在紫铜厚大件上的应用 张鹏，马金萍，焊接，第7期 2001 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1709633A (en) | 2005-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Cheng et al. | Microstructures and mechanical properties of copper-stainless steel butt-welded joints by MIG-TIG double-sided arc welding | |
| CN101284339B (en) | Welding wire and method for welding the aluminum and aluminum alloy and steel | |
| CN108161278B (en) | High-entropy flux-cored wire for aluminum-steel MIG welding and preparation method thereof | |
| CN108161277B (en) | High-entropy flux-cored wire for aluminum-steel submerged arc welding and preparation method thereof | |
| CN106425100B (en) | Bilateral laser titanium steel composite board complete penetraction and fusion in welding welding method based on transition zone control | |
| Ding et al. | TIG–MIG hybrid welding of ferritic stainless steels and magnesium alloys with Cu interlayer of different thickness | |
| CN106425104A (en) | One-sided welding double-sided molding welding method for titanium steel composite pipe | |
| CN107999916A (en) | A kind of double light beam laser-TIG compound silk filling melt-brazing methods of dissimilar material | |
| CN108188582B (en) | Laser-electric arc composite filler wire welding method for preparing magnesium/steel dissimilar metal | |
| CN104476011B (en) | High-entropy alloy welding wire and the application of titanium/mild steel is welded for TIG | |
| CN1228167C (en) | Method for red copper transition welding without preheating metal alloy | |
| CN102896398A (en) | Aluminum alloy arc spot welding method based on CMT (Cold Metal Transmission Welding) and welding system | |
| CN113798677B (en) | Welding method of duplex stainless steel and titanium alloy | |
| CN103567661A (en) | Welding material for butt fusion welding transition layer of titanium-steel composite board and preparation method of welding material | |
| CN100335229C (en) | Composite welding wire for welding red copper thick plate without preheating and its welding method | |
| CN101269436B (en) | Aluminum-titanium alloy dissimilar metal scraping and wiping agitation soldering method | |
| Kaushik et al. | Al-steel dissimilar joining: Challenges and opportunities | |
| Yu et al. | Microstructures and mechanical property of 5052 aluminum alloy/Q235 steel butt joint achieved by laser beam joining with Sn-Zn filler wire | |
| CN1285440C (en) | Micro melting soldering method of argon-shielded tungsten arc welding for thick plate of red copper without warming-up | |
| CN107297569A (en) | A kind of titanium copper dissimilar metal connector welding method | |
| CN102581497A (en) | Method for welding by fused metal filling | |
| CN114289823A (en) | Method for improving performance of 7075-T6 super-hard aluminum alloy thick plate fusion welding joint | |
| CN108161263A (en) | A kind of argon-arc welding-braze welding composite welding method | |
| CN113953712A (en) | Material for butt welding of TA1-Q235 composite plates and welding method | |
| CN111715982A (en) | Novel welding method of high-alloy austenitic heat-resistant stainless steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070905 Termination date: 20110708 |