CN104070274A - Spiral welded pipe inner welding method with soldering flux automatically sent by ventilation system - Google Patents
Spiral welded pipe inner welding method with soldering flux automatically sent by ventilation system Download PDFInfo
- Publication number
- CN104070274A CN104070274A CN201410273022.5A CN201410273022A CN104070274A CN 104070274 A CN104070274 A CN 104070274A CN 201410273022 A CN201410273022 A CN 201410273022A CN 104070274 A CN104070274 A CN 104070274A
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- CN
- China
- Prior art keywords
- welded pipe
- spiral welded
- solder flux
- soldering flux
- welding
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/12—Making tubes or metal hoses with helically arranged seams
- B21C37/122—Making tubes or metal hoses with helically arranged seams with welded or soldered seams
-
- 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
- B23K9/32—Accessories
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a spiral welded pipe inner welding method with a soldering flux automatically sent by a ventilation system. In the inner welding process of the spiral welded pipe, the ventilation system automatically sends the soldering flux to a welding seam by applying a wind force. Compared with the prior art, the spiral welded pipe inner welding method with the soldering flux automatically sent by the ventilation system has the beneficial effects that the soldering flux is directly sent to the welding seam through the wind force in the spiral welded pipe inner welding method with the soldering flux automatically sent by the ventilation system, and the wind force is adjustable, so that the coverage degree of the soldering flux to the welding seam can be well controlled, and the coverage rate for the welding seam can be up to 100%, the technological stability of the inner welding of the spiral welded pipe is improved efficiently, the performance and quality of the welding seam of the spiral welded pipe are guaranteed, the use amount of the soldering flux is efficiently controlled, the production cost for the welding is reduced obviously, and the production condition and the environmental health of a working region are also improved, and the production efficiency is improved.
Description
Technical field
The present invention relates to soldering method in a kind of spiral welded pipe, relate in particular to soldering method in a kind of spiral welded pipe that is automatically sent solder flux by ventilating system.
Background technology
Spiral welded pipe is that low-carbon (LC) structural carbon steel or low-alloy structural steel steel band are rolled into pipe by the angle of certain helix (being forming angle), then pipe seam is welded and is made, and it can produce large diameter steel pipe with narrower band steel.The outstanding advantages such as spiral welded pipe is high with its weld seam compression strength, stability is strong, have now been widely used in oil, liquefied petroleum gas, public waterworks, Urban Buried Pipeline Network construction field.
Spiral steel pipe mainly adopts the inside and outside soldered continuous mode of production operation of submerged-arc welding at present, and this production technology is by the docking of band steel toe tail, adopts monofilament or double wire hidden arc welding to connect, and adopts automatic submerged arc welding repair welding after being rolled into steel pipe, finally makes spiral welded pipe.
In spiral welded pipe manufacturing process, there is very important production technology to be together called interior weldering, this technique is with welding wire and solder flux, strip edge edge overlapping position to be welded while being with steel to enter former, its method is to spread in welded joints to spill one deck and have certain thickness graininess solder flux, the welding wire electric arc that ignites under the covering of fusible graininess solder flux, make welding wire, part fusing and the evaporation of mother metal and solder flux form a cavity, thereby electric arc is to form thermal source in cavity the inside smooth combustion, thermal source will be with the rapid heat fused of steel two ends interface, form molten bath, molten bath moves forward with thermal source, cooling rear formation continuous weld and band steel two ends are connected in one, when going out former, can not ftracture and form welded tube.In the process of interior weldering, solder flux is good isolated the opening of molten bath and air, thereby makes the electric arc can stable burning in molten chamber, also makes mother metal and welding wire well be protected and not oxidized.
In the process of welding in spiral welded pipe at present, solder flux is generally that directly paving is sprinkled upon on weldment, in the process of upper solder flux, easily occur that solder flux paving spills inhomogeneous, the phenomenon that even has commissure not to be covered to, if air directly contacts with the molten bath of high temperature in the process of welding, the oxygen in atmosphere will oxidized metal and various alloying element.Nitrogen in atmosphere, water vapour etc. enter molten bath, also can in subsequent cooling process, in weld seam, form pore, slag inclusion, defects i.e.cracks, worsen the quality and performance of weld seam.For fear of the generation of this phenomenon, workmen tends on weldment heavy dose of paving and spills solder flux, makes job site a large amount of flux particle that is scattered, and causes great waste, also makes working region not only dirty but also random simultaneously.In addition, in the process of welding, also usually there is the blocked phenomenon of the solder flux blanking mouth of pipe, affected to a certain extent the continuity of work, reduced production efficiency.
How could be fully, safety, solder flux is sent to welding line place in spiral welded pipe efficiently, become spiral welded pipe manufacturing enterprise urgent problem.
Summary of the invention
The object of this invention is to provide soldering method in a kind of spiral welded pipe that is automatically sent solder flux by ventilating system, by wind-force, solder flux is directly sent to commissure, because wind-force is adjustable, so can well control the level of coverage of solder flux butt welded seam, the coverage rate of butt welded seam can arrive 100%, effectively raise the technology stability of weldering in spiral welded pipe, guaranteed the Performance and quality of spiral welded pipe weld seam, and effectively controlled the use amount of solder flux, significantly reduced the production cost of welding, also working condition and the environmental sanitation of working region have been improved simultaneously, improved production efficiency.
For achieving the above object, the present invention realizes by the following technical solutions:
By ventilating system, automatically sent a soldering method in the spiral welded pipe of solder flux, in the process of welding in spiral welded pipe, by ventilating system, use wind-force that solder flux is sent to commissure automatically.
Described ventilating system comprises choke valve, air supplying hose, supply air system, feeding tube, doffer, the air outlet place of choke valve is provided with air supplying hose, the other end of air supplying hose is socketed on the ajutage of supply air system, the air outlet place socket feeding tube of supply air system, the other end of feeding tube is socketed with doffer.
Described supply air system comprises pneumatic feeding storehouse, material guiding tube, ajutage, and ajutage inserts pneumatic feeding storehouse by the air inlet place of pneumatic feeding storehouse, and material guiding tube is fixed on pneumatic feeding storehouse, and material guiding tube communicates with pneumatic feeding storehouse inside.
Described doffer comprises insulation stop flitch, discharge nozzle, and insulation stop flitch is fixed on the both sides of discharge nozzle.
Compared with prior art, the invention has the beneficial effects as follows:
Soldering method in a kind of spiral welded pipe that is automatically sent solder flux by ventilating system, by wind-force, solder flux is directly sent to commissure, because wind-force is adjustable, so can well control the level of coverage of solder flux butt welded seam, the coverage rate of butt welded seam can arrive 100%, effectively raise the technology stability of weldering in spiral welded pipe, guaranteed the Performance and quality of spiral welded pipe weld seam, and effectively controlled the use amount of solder flux, significantly reduced the production cost of welding, also improved working condition and the environmental sanitation of working region, improved production efficiency simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of ventilating system in the present invention.
Fig. 2 is the top view of accompanying drawing 1.
In figure: 1. pneumatic feeding storehouse 7. feeding tube 8. discharge nozzle 9. insulation stop flitch of choke valve .2. air supplying hose .3. ajutage .4. tremie pipe .5. material guiding tube 6.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further illustrated:
As shown in the figure, the present invention is a kind of is sent soldering method in the spiral welded pipe of solder flux automatically by ventilating system, in the process of welding in spiral welded pipe, by ventilating system, use wind-force that solder flux is sent to commissure automatically, wherein ventilating system comprises choke valve 1, air supplying hose 2, supply air system, feeding tube 7, doffer, the air outlet place of choke valve 1 is provided with air supplying hose 2, the other end of air supplying hose 2 is socketed on the ajutage 3 of supply air system, the air outlet place socket feeding tube 7 of supply air system, the other end of feeding tube 7 is socketed with doffer.
Supply air system comprises pneumatic feeding storehouse 6, material guiding tube 5, ajutage 3, and ajutage 3 inserts pneumatic feeding storehouse 6 by the air inlet place of pneumatic feeding storehouse 6, and material guiding tube 5 is fixed on pneumatic feeding storehouse 6, and material guiding tube 5 communicates with pneumatic feeding storehouse 5 inside.
Doffer comprises insulation stop flitch 9, discharge nozzle 8, and insulation stop flitch 9 is fixed on the both sides of discharge nozzle 8.
The upper end socket tremie pipe 4 of material guiding tube 5,6 one-tenth 65 ° of overturning angles of material guiding tube 5 and pneumatic feeding storehouse, are conducive to solder flux to the inflow of pneumatic feeding storehouse 6.
Wind regime is to send into ventilating system via choke valve 1, the size that choke valve 1 can regulation and control wind-force.
The charging aperture of discharge nozzle 8 and feeding tube 7 sockets, discharging opening is in the inside of insulation stop flitch 9, and opening shape is done in lower end, so that the outflow of solder flux, insulation stop flitch 9 can be controlled the flow direction of solder flux, guarantees that solder flux all drops on commissure.
During use: can first doffer be temporarily fixed on welding gun, solder flux is sent into pneumatic feeding storehouse 6 via tremie pipe 4, wind regime is sent into pneumatic feeding storehouse 6 via choke valve 1, wind-force is adjusted into suitable size, solder flux arrives doffer through feeding tube 7 under the effect of wind-force, and trickles down in welded joints uniformly in company with the movement of welding gun.
Claims (4)
1. by ventilating system, automatically send a soldering method in the spiral welded pipe of solder flux, it is characterized in that, in the process of welding in spiral welded pipe, by ventilating system, use wind-force that solder flux is sent to commissure automatically.
2. soldering method in a kind of spiral welded pipe that is automatically sent solder flux by ventilating system according to claim 1, it is characterized in that, described ventilating system comprises choke valve, air supplying hose, supply air system, feeding tube, doffer, the air outlet place of choke valve is provided with air supplying hose, the other end of air supplying hose is socketed on the ajutage of supply air system, the air outlet place socket feeding tube of supply air system, the other end of feeding tube is socketed with doffer.
3. soldering method in a kind of spiral welded pipe that is automatically sent solder flux by ventilating system according to claim 2, it is characterized in that, described supply air system comprises pneumatic feeding storehouse, material guiding tube, ajutage, ajutage inserts pneumatic feeding storehouse by the air inlet place of pneumatic feeding storehouse, material guiding tube is fixed on pneumatic feeding storehouse, and material guiding tube communicates with pneumatic feeding storehouse inside.
4. soldering method in a kind of spiral welded pipe that is automatically sent solder flux by ventilating system according to claim 2, is characterized in that, described doffer comprises insulation stop flitch, discharge nozzle, and insulation stop flitch is fixed on the both sides of discharge nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410273022.5A CN104070274A (en) | 2014-06-18 | 2014-06-18 | Spiral welded pipe inner welding method with soldering flux automatically sent by ventilation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410273022.5A CN104070274A (en) | 2014-06-18 | 2014-06-18 | Spiral welded pipe inner welding method with soldering flux automatically sent by ventilation system |
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| Publication Number | Publication Date |
|---|---|
| CN104070274A true CN104070274A (en) | 2014-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410273022.5A Pending CN104070274A (en) | 2014-06-18 | 2014-06-18 | Spiral welded pipe inner welding method with soldering flux automatically sent by ventilation system |
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| CN (1) | CN104070274A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113790583A (en) * | 2021-09-06 | 2021-12-14 | 鞍山奥明管业有限公司 | Prefabricated direct-buried insulating pipe |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01306074A (en) * | 1988-06-02 | 1989-12-11 | Ajikawa Tekko Kensetsu Kk | Automatic welding equipment for pipe inner surface |
| CN2126132U (en) * | 1992-04-21 | 1992-12-30 | 北京宣武华光焊接工艺成套装备联营公司 | Small-diameter tube submerged-arc welding machine |
| CN1277903A (en) * | 1999-06-18 | 2000-12-27 | 现代重工业株式会社 | Three electrodes automatic submerged-arc welding machine used for welding small diameter pipeline |
| CN201881081U (en) * | 2011-01-07 | 2011-06-29 | 大庆市首创钢管制造有限公司 | Inner welding automatic pneumatic conveying assistor for welding flux |
-
2014
- 2014-06-18 CN CN201410273022.5A patent/CN104070274A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01306074A (en) * | 1988-06-02 | 1989-12-11 | Ajikawa Tekko Kensetsu Kk | Automatic welding equipment for pipe inner surface |
| CN2126132U (en) * | 1992-04-21 | 1992-12-30 | 北京宣武华光焊接工艺成套装备联营公司 | Small-diameter tube submerged-arc welding machine |
| CN1277903A (en) * | 1999-06-18 | 2000-12-27 | 现代重工业株式会社 | Three electrodes automatic submerged-arc welding machine used for welding small diameter pipeline |
| CN201881081U (en) * | 2011-01-07 | 2011-06-29 | 大庆市首创钢管制造有限公司 | Inner welding automatic pneumatic conveying assistor for welding flux |
Non-Patent Citations (1)
| Title |
|---|
| 王海力等: "风送焊剂法在埋弧焊管中的应用技术", 《焊管》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113790583A (en) * | 2021-09-06 | 2021-12-14 | 鞍山奥明管业有限公司 | Prefabricated direct-buried insulating pipe |
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