CN103878467B - A kind of welding method of chromiumnickel austenite stainless steel - Google Patents
A kind of welding method of chromiumnickel austenite stainless steel Download PDFInfo
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- CN103878467B CN103878467B CN201410115171.9A CN201410115171A CN103878467B CN 103878467 B CN103878467 B CN 103878467B CN 201410115171 A CN201410115171 A CN 201410115171A CN 103878467 B CN103878467 B CN 103878467B
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- stainless steel
- austenitic stainless
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- temperature
- weld
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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
- B23K9/16—Arc welding or cutting making use of shielding gas
-
- 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/12—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to investigating the properties, e.g. the weldability, of materials
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
Abstract
The invention discloses a kind of welding method of chromiumnickel austenite stainless steel, comprising: with acetone and sulfuric acid wiping solder side; It is in the drying box of 100 DEG C that ERNiCrFe-6 nickel-based welding wire and ERNiCrMo-3 Ni-Cr-Mo welding wire are placed on temperature, again ERNiCrFe-6 nickel-based welding wire and ERNiCrMo-3 Ni-Cr-Mo welding wire are deposited in box body, box body is being filled up, sealing box body with silica dessicant; Utilize argon gas for protection gas; fire blanket is wound around in the outside of austenitic stainless steel; with ERNiCrFe-6 nickel-based welding wire to austenitic stainless steel first time welding; with ERNiCrMo-3 Ni-Cr-Mo welding wire to the welding of austenitic stainless steel second time; gas cools; when temperature≤200 DEG C of the weld of austenitic stainless steel, remove fire blanket.The inventive method is simple, can effectively reduce chromiumnickel austenite stainless steel weld and occur distortion, strengthen the intensity of weld, make up the problem that chromium-nickel austenite weld lacks chromium and scarce nickel.
Description
Technical field
The present invention relates to a kind of welding method of chromiumnickel austenite stainless steel.
Background technology
Along with improving constantly of China's expanding economy and living standards of the people, chromiumnickel austenite stainless steel is good with its corrosion resistance, hardness is high and mechanical strength is large, extensively welcomed by the people, chromiumnickel austenite stainless steel is mainly used in the aspect such as bridge, road, but chromiumnickel austenite stainless steel is when welding, easy distortion, and easily form bubble at weld, cause weld crisp, easily rupture.This brings very large potential safety hazard for architectural engineering.
Summary of the invention
The present invention is directed to current chromium-nickel austenite stainless in welding process Problems existing, designed and developed a kind of welding method of chromiumnickel austenite stainless steel.
Technical scheme provided by the invention is:
A welding method for chromiumnickel austenite stainless steel, comprising:
Step one, before 3 ~ 5 hours, be the solder side of the sulfuric acid wiping austenitic stainless steel of 0.5mol/L in welding respectively by acetone and concentration;
Step 2, before welding 5 ~ 7 hour, ERNiCrFe-6 nickel-based welding wire and ERNiCrMo-3 Ni-Cr-Mo welding wire being placed on temperature is in the drying box of 100 DEG C 3 hours, again ERNiCrFe-6 nickel-based welding wire and ERNiCrMo-3 Ni-Cr-Mo welding wire are deposited in box body, fill up described box body with silica dessicant, seal described box body;
Step 3, take out ERNiCrFe-6 nickel-based welding wire, utilize argon gas for protection gas, wherein water content≤1% of argon gas, being defined in end relative with solder side on austenitic stainless steel is first end, in the outside of austenitic stainless steel apart from solder side 50cm place, start to be wound around the fire blanket that thickness is 2cm, until first end, with ERNiCrFe-6 nickel-based welding wire to austenitic stainless steel first time welding, carrying out in first time welding process, be distance solder side 20cm on 10 DEG C of gas sustained firings to austenitic stainless steel by temperature, 100cm and 300cm place, be the first ends of 20 DEG C of gas sustained firings to austenitic stainless steel by temperature, when the thickness of weld layer is 3mm, stop first time welding, stopping temperature is that 10 DEG C of gases and 20 DEG C of gases spray, correct the weld of austenitic stainless steel, when temperature≤50 DEG C of weld, start the welding of austenitic stainless steel second time,
Take out ERNiCrMo-3 Ni-Cr-Mo welding wire, utilize argon gas for protection gas, wherein water content≤1% of argon gas, with ERNiCrMo-3 Ni-Cr-Mo welding wire to the welding of austenitic stainless steel second time, carrying out in second time welding process, be distance solder side 20cm on 10 DEG C of gas sustained firings to austenitic stainless steel by temperature, 100cm and 300cm place, be the first ends of 20 DEG C of gas sustained firings to austenitic stainless steel by temperature, after second time welding terminates, stopping temperature is that 10 DEG C of gases and 20 DEG C of gases spray, correct the weld of austenitic stainless steel, when temperature≤200 DEG C of the weld of austenitic stainless steel, remove fire blanket.
Preferably, in the welding method of described chromiumnickel austenite stainless steel, in described step 3, austenitic stainless steel is connected with a whirligig, described whirligig drives austenitic stainless steel to rotate, and when carrying out first time welding to austenitic stainless steel and second time is welded, opens whirligig, after welding terminates, close described whirligig.
Preferably, in the welding method of described chromiumnickel austenite stainless steel, in described step 3, after first time welding or second has been welded, correct austenitic stainless steel and be specially:
Austenitic stainless steel level is placed on support level face, when first time welding or second time have been welded, knocks out-of-flatness place of the weld of austenitic stainless steel with hydraulic cylinder.
Preferably, in the welding method of described chromiumnickel austenite stainless steel, in described step 3, after having corrected for the first time, be that the gas sustained firing of 0 DEG C is to the austenitic stainless steel place not being wound with fire blanket by temperature, when temperature≤200 DEG C of the weld of austenitic stainless steel, stopping temperature is that the gas of 0 DEG C sprays, after second time has been corrected, be that the gas sustained firing of 0 DEG C is to the austenitic stainless steel place not being wound with fire blanket by temperature, when temperature≤200 DEG C of the weld of austenitic stainless steel, dismounting fire blanket and stopping temperature are that the gas of 0 DEG C sprays.
The present invention is directed to the defect existed in the welding of current chromiumnickel austenite stainless steel, a kind of welding method of chromiumnickel austenite stainless steel of development and Design.The first, due to the design feature of chromiumnickel austenite stainless steel, the present invention, by the cooling of segmentation on chromiumnickel austenite stainless steel, accelerates heat transfer, reduces the distortion of weld, the present invention simultaneously also adopts the method for twice welding, further reduces the distortion of weld; The second, the present invention is also wound with fire blanket in austenitic stainless steel outside, prevents Cryogenic air to be applied directly on chromiumnickel austenite stainless steel, produces infringement to austenitic stainless steel; Three, the present invention also processes the welding wire of welding, reduces the moisture in welding wire, thus prevents weld in welding process from occurring bubble, thus enhance hardness and the intensity of weld; Four, adopt two kinds of different welding wires to weld in the present invention, effectively can make up the phenomenon that weld lacks chromium and scarce nickel.The inventive method is simple, can effectively reduce chromiumnickel austenite stainless steel weld and occur distortion, strengthen the intensity of weld, make up the problem that chromium-nickel austenite weld lacks chromium and scarce nickel.
Accompanying drawing explanation
Fig. 1 is flow chart of the present invention
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail, can implement according to this with reference to description word to make those skilled in the art.
As shown in Figure 1, the invention provides a kind of welding method of chromiumnickel austenite stainless steel, comprising:
Step one, in welding before 3 ~ 5 hours, with the solder side of acetone wiping austenitic stainless steel, then be the solder side of sulfuric acid wiping austenitic stainless steel of 0.5mol/L by concentration;
Step 2, before welding 5 ~ 7 hour, ERNiCrFe-6 nickel-based welding wire and ERNiCrMo-3 Ni-Cr-Mo welding wire being placed on temperature is in the drying box of 100 DEG C 3 hours, again ERNiCrFe-6 nickel-based welding wire and ERNiCrMo-3 Ni-Cr-Mo welding wire are deposited in box body, fill up described box body with silica dessicant, seal described box body;
Step 3, austenitic stainless steel level is placed on support level face, austenitic stainless steel is connected with a whirligig, whirligig drives austenitic stainless steel to rotate, wherein, whirligig comprises: motor and pipe box, the outer surface of the turning cylinder of motor is enclosed with the fire blanket that thickness is 5cm, one end of pipe box is set on the turning cylinder of motor, the other end of pipe box is set on the first end of austenitic stainless steel, driven by motor austenitic stainless steel rotates, take out ERNiCrFe-6 nickel-based welding wire, utilize argon gas for protection gas, wherein water content≤1% of argon gas, being defined in end relative with solder side on austenitic stainless steel is first end, in the outside of austenitic stainless steel apart from solder side 50cm place, start to be wound around the fire blanket that thickness is 2cm, until first end, with ERNiCrFe-6 nickel-based welding wire to austenitic stainless steel first time welding, open motor, carrying out in first time welding process, be distance solder side 20cm on 10 DEG C of gas sustained firings to austenitic stainless steel by temperature, 100cm and 300cm place, be the first ends of 20 DEG C of gas sustained firings to austenitic stainless steel by temperature, when the thickness of weld layer is 3mm, stop first time welding, disable motor, stopping temperature is that 10 DEG C of gases and 20 DEG C of gases spray, correct the weld of austenitic stainless steel, be specially: gripping means grips is in a pair side of the weld of austenitic stainless steel, hydraulic cylinder knocks out-of-flatness place of the weld of austenitic stainless steel, after having corrected for the first time, be that the gas sustained firing of 0 DEG C is to the austenitic stainless steel place not being wound with fire blanket by temperature, when temperature≤200 DEG C of the weld of austenitic stainless steel, stopping temperature is that the gas of 0 DEG C sprays, when temperature≤50 DEG C of weld, start the welding of austenitic stainless steel second time,
Take out ERNiCrMo-3 Ni-Cr-Mo welding wire, utilize argon gas for protection gas, wherein water content≤1% of argon gas, with ERNiCrMo-3 Ni-Cr-Mo welding wire to the welding of austenitic stainless steel second time, open motor, carrying out in second time welding process, be distance solder side 20cm on 10 DEG C of gas sustained firings to austenitic stainless steel by temperature, 100cm and 300cm place, be the first ends of 20 DEG C of gas sustained firings to austenitic stainless steel by temperature, after second time welding terminates, disable motor, stopping temperature is that 10 DEG C of gases and 20 DEG C of gases spray, correct the weld of austenitic stainless steel, correcting process after correcting process has welded with first is identical, after rectification completes, be that the gas sustained firing of 0 DEG C is to the austenitic stainless steel place not being wound with fire blanket by temperature, when temperature≤200 DEG C of the weld of austenitic stainless steel, dismounting fire blanket and stopping temperature are that the gas of 0 DEG C sprays, when temperature≤200 DEG C of the weld of austenitic stainless steel, remove fire blanket.
Although embodiment of the present invention are open as above, but it is not restricted to listed in description and embodiment utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend described.
Claims (4)
1. a welding method for chromiumnickel austenite stainless steel, is characterized in that, comprising:
Step one, before 3 ~ 5 hours, be the solder side of the sulfuric acid wiping austenitic stainless steel of 0.5mol/L in welding respectively by acetone and concentration;
Step 2, before welding 5 ~ 7 hour, ERNiCrFe-6 nickel-based welding wire and ERNiCrMo-3 Ni-Cr-Mo welding wire being placed on temperature is in the drying box of 100 DEG C 3 hours, again ERNiCrFe-6 nickel-based welding wire and ERNiCrMo-3 Ni-Cr-Mo welding wire are deposited in box body, fill up described box body with silica dessicant, seal described box body;
Step 3, take out ERNiCrFe-6 nickel-based welding wire, utilize argon gas for protection gas, wherein water content≤1% of argon gas, being defined in end relative with solder side on austenitic stainless steel is first end, in the outside of austenitic stainless steel apart from solder side 50cm place, start to be wound around the fire blanket that thickness is 2cm, until first end, with ERNiCrFe-6 nickel-based welding wire to austenitic stainless steel first time welding, carrying out in first time welding process, be distance solder side 20cm on 10 DEG C of gas sustained firings to austenitic stainless steel by temperature, 100cm and 300cm place, be the first ends of 20 DEG C of gas sustained firings to austenitic stainless steel by temperature, when the thickness of weld layer is 3mm, stop first time welding, stopping temperature is that 10 DEG C of gases and 20 DEG C of gases spray, correct the weld of austenitic stainless steel, when temperature≤50 DEG C of weld, start the welding of austenitic stainless steel second time,
Take out ERNiCrMo-3 Ni-Cr-Mo welding wire, utilize argon gas for protection gas, wherein water content≤1% of argon gas, with ERNiCrMo-3 Ni-Cr-Mo welding wire to the welding of austenitic stainless steel second time, carrying out in second time welding process, be distance solder side 20cm on 10 DEG C of gas sustained firings to austenitic stainless steel by temperature, 100cm and 300cm place, be the first ends of 20 DEG C of gas sustained firings to austenitic stainless steel by temperature, after second time welding terminates, stopping temperature is that 10 DEG C of gases and 20 DEG C of gases spray, correct the weld of austenitic stainless steel, when temperature≤200 DEG C of the weld of austenitic stainless steel, remove fire blanket.
2. the welding method of chromiumnickel austenite stainless steel as claimed in claim 1, it is characterized in that, in described step 3, austenitic stainless steel is connected with a whirligig, described whirligig drives austenitic stainless steel to rotate, and when carrying out first time welding to austenitic stainless steel and second time is welded, opens whirligig, after welding terminates, close described whirligig.
3. the welding method of chromiumnickel austenite stainless steel as claimed in claim 2, is characterized in that, in described step 3, after first time welding or second has been welded, has corrected austenitic stainless steel and is specially:
Austenitic stainless steel level is placed on support level face, when first time welding or second time have been welded, knocks out-of-flatness place of the weld of austenitic stainless steel with hydraulic cylinder.
4. the welding method of chromiumnickel austenite stainless steel as claimed in claim 3, it is characterized in that, in described step 3, after having corrected for the first time, be that the gas sustained firing of 0 DEG C is to the austenitic stainless steel place not being wound with fire blanket by temperature, when temperature≤200 DEG C of the weld of austenitic stainless steel, stopping temperature is that the gas of 0 DEG C sprays, after second time has been corrected, be that the gas sustained firing of 0 DEG C is to the austenitic stainless steel place not being wound with fire blanket by temperature, when temperature≤200 DEG C of the weld of austenitic stainless steel, dismounting fire blanket and stopping temperature are that the gas of 0 DEG C sprays.
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| CN201410115171.9A CN103878467B (en) | 2014-03-26 | 2014-03-26 | A kind of welding method of chromiumnickel austenite stainless steel |
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| CN201410115171.9A CN103878467B (en) | 2014-03-26 | 2014-03-26 | A kind of welding method of chromiumnickel austenite stainless steel |
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| CN103878467A CN103878467A (en) | 2014-06-25 |
| CN103878467B true CN103878467B (en) | 2016-03-02 |
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| CN110253116B (en) * | 2019-06-20 | 2021-07-20 | 中船澄西新荣船舶有限公司 | Argon arc welding process for super austenitic stainless steel 254SMo steel pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5542148A (en) * | 1978-09-21 | 1980-03-25 | Mitsubishi Heavy Ind Ltd | Inconel welding method of dissimilar material joint |
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| CN101100013A (en) * | 2007-07-04 | 2008-01-09 | 中国石油天然气集团公司 | Thin-wall stainless steel double-layer and carbon steel base layer composite tube girth weld welding method |
| CN101284330A (en) * | 2008-05-28 | 2008-10-15 | 山东大学 | Molybdenum copper and stainless steel argon tungsten argon arc welding process |
| CN201969995U (en) * | 2010-11-08 | 2011-09-14 | 哈尔滨锅炉厂有限责任公司 | Water-cooled hot-wire tungsten electrode argon arc welding device for austenitic stainless steel pipe |
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