CN106312260B - Two phase stainless steel process pipe welding method - Google Patents
Two phase stainless steel process pipe welding method Download PDFInfo
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- CN106312260B CN106312260B CN201610919558.9A CN201610919558A CN106312260B CN 106312260 B CN106312260 B CN 106312260B CN 201610919558 A CN201610919558 A CN 201610919558A CN 106312260 B CN106312260 B CN 106312260B
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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
- B23K9/164—Arc welding or cutting making use of shielding gas making use of a moving fluid
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
- B23K35/0261—Rods, electrodes, wires
- B23K35/0266—Rods, electrodes, wires flux-cored
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3603—Halide salts
- B23K35/3605—Fluorides
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/365—Selection of non-metallic compositions of coating materials either alone or conjoint with selection of soldering or welding 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
- B23K35/404—Coated rods; Coated electrodes
-
- 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
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
-
- 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
- B23K2103/05—Stainless steel
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Arc Welding In General (AREA)
- Nonmetallic Welding Materials (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a kind of two phase stainless steel process pipe welding methods, are S22053 two phase stainless steels, comprise the following steps：1) V-arrangement butt weld is used；2) backing welding uses argon tungsten-arc welding with second layer pass weld; the protective gas being passed through in welding gun is pure argon or the mixed gas of argon gas and ammonia; argon gas volume is more than 95% in mixed gas, and the flow of protective gas is 10 15L/min, and control line energy parameter；Control interlayer temperature is less than 250 DEG C until backing welding is soldered with second layer welding bead；3) it is full with the weldering of pure argon gas shielded arc welding for the pipeline of wall thickness≤10mm；For wall thickness between the pipeline of 10 32mm, layer arc welding filling and cosmetic welding, and interlayer temperature is controlled to be less than 200 DEG C until weldering is full by hand；4) after the completion of welding, acid wash passivation processing is carried out.The present invention can improve welding quality and efficiency using the weldering of argon Electricity Federation, reduce cost.
Description
Technical field
The present invention relates to the welding method technical fields of two phase stainless steel.It is more particularly related to a kind of two-phase
Stainless steel art method for welding pipeline.
Background technology
S22053 (Chinese trade mark 022Cr23Ni5Mo3N) two phase stainless steel material yield strength is high, not only has very strong
Resisting chlorides stress corrosion ability also has good comprehensive mechanical property.As petroleum chemical industry quality requirements improve,
S22053 two-phase stainless Steel material is due to excellent performance, from now in petroleum gas, chemical engineering and ocean engineering side
Face will be used widely, and largely apply in construction, and market application foreground is wide.
Welding manufactures main technique as pipeline, and quality of weld joint quality directly affects the performance of pipeline, I am public
Department uses S22053 two-phase stainless in 2,600,000 tons/year of heavy-oil hydrogenations and oil quality upgrading project Process Piping Construction are carried out
195 meters of steel pipe material, about 4300 inch of welding capacity, outer diameter tube 406mm~27mm, pipeline wall thickness 32mm~5.5mm, however manage
Road wall thickness directly results in weld dimensions duplex structure ratio and is difficult to control, and influences welding quality, and work efficiency reduces.
The content of the invention
It is an object of the invention to solve at least the above, and provide the advantages of at least will be described later.
It is a still further object of the present invention to provide one kind to improve welding quality and the efficiency of the engineering project, reduce project construction
Cost, the method welded using argon Electricity Federation carry out the method that S22053 two phase stainless steels process pipe welds.
In order to realize these purposes and further advantage according to the present invention, a kind of two phase stainless steel process pipe weldering is provided
Method is connect, is specially S22053 two phase stainless steels, comprises the following steps：
1) using V-arrangement butt weld, welding position is all positon；
2) for backing welding with second layer pass weld using argon tungsten-arc welding, the interior protective gas being passed through of welding gun is pure argon
Or the mixed gas of argon gas and ammonia, argon gas volume is more than 95% in mixed gas, and the flow of protective gas is 10-15L/min,
And control line energy parameter：Pipeline wall thickness≤10mm, heat input scope are 1.0-1.5KJ/mm；Pipeline wall thickness between 10-20mm,
Heat input scope is 1.5-2.5KJ/mm；For pipeline wall thickness between 20-32mm, heat input scope is 2.5-4KJ/mm；Control interlayer
Temperature is less than 250 DEG C until backing welding is soldered with second layer welding bead；
3) full with the weldering of pure argon gas shielded arc welding for the pipeline of wall thickness≤10mm, heat input control is 2.0-
3.0KJ/mm；For wall thickness between the pipeline of 10-32mm, arc welding filling and cosmetic welding, heat input control are layer by hand
2.5-4.0KJ/mm；And interlayer temperature is controlled to be less than 200 DEG C until weldering is full；
4) after the completion of welding, acid wash passivation processing is carried out.
Preferably, the two phase stainless steel process pipe welding method, the protection being passed through in welding gun in step 2)
The volume fraction of ammonia in gas gas is 2-3%.
Preferably, the two phase stainless steel process pipe welding method, in step 3), for 10≤wall thickness ＜
The pipeline of 20mm using single V grooves, and uses multilayer welding welding method.
Preferably, the two phase stainless steel process pipe welding method, in step 3), for 20≤wall thickness≤
The pipeline of 32mm using upper and lower compound V-butt, and uses multi-pass welding welding method.
Preferably, the two phase stainless steel process pipe welding method, uses in step 2) argon tungsten-arc welding
ER2209 welding wires.
Preferably, the two phase stainless steel process pipe welding method, pure argon gas shielded arc in step 3)
Weldering, manual electric arc welding are using welding rod, and using ER2209 welding wires as core wire, coating is then made of following component in parts by weight：
35-45 parts of calcirm-fluoride, 12-18 parts of titanium dioxide, 3-5 parts of strontium fluoride, 5-8 parts of magnesium carbonate, 5-8 parts of barium carbonate, nitrided ferro-chromium 5-8
Part, 3-5 parts of mid-carbon fe-mn, 2-5 parts of molybdenum powder, 6-10 parts of basalt, 8-12 parts of fish-eye stone and 1-2 parts of diopside.
Preferably, the two phase stainless steel process pipe welding method, the preparation method of the welding rod are as follows：It weighs
35-45 parts of calcirm-fluoride, 12-18 parts of titanium dioxide, 3-5 parts of strontium fluoride, 5-8 parts of magnesium carbonate, 5-8 parts of barium carbonate, nitrided ferro-chromium 5-8
Part, 3-5 parts of mid-carbon fe-mn, 2-5 parts of molybdenum powder, 6-10 parts of basalt, 8-12 parts of fish-eye stone and 1-2 parts of diopside, after mixing
The potassium-sodium water glass for adding in the 15-20% for accounting for its mixture total weight does bonding agent, mixture is coated in outside welding wire, through hydraulic type
Electrode extrusion press is suppressed, and dries 1.5h at 150 DEG C, 0.5h is dried at 400 DEG C.
Preferably, the two phase stainless steel process pipe welding method, the mass percent that coating accounts for welding rod are 35-
40%.
The present invention includes at least following advantageous effect：
1) present invention is according to the chemical analysis of S22053 two phase stainless steel material conduit materials, mechanical property, use condition
Consider with welding condition, while consider that weld strength, corrosion resistance, linear expansion coefficient, high-temperature behavior, weld crack are gentle
The sensibility in hole, the method welded using argon Electricity Federation carry out S22053 two phase stainless steel material technology pipeline welding jobs, effectively
Welding quality is improved, reduces production cost, welding wire selects ER2209, has chosen more suitable welding rod welding wire, to welding
Qualification rate plays guaranteeing role；
2) present invention preferentially selects the protection containing 2-3% ammonia+97-98% argon gas in backing welding and second layer welding bead
Gas, it is possible to reduce the loss of N element in welding material so that ferritic structure can preferably change to austenite structure, protect
Card obtains rational ratio, and ammonia can be such that the inner surface of backing welding avoids completely at some extent as reducing agent
Oxidation improves pitting corrosion resistant performance；
3) present invention is in filling and during cosmetic welding, the welding rod of selection using ER2209 welding wires as core wire, coating then by calcirm-fluoride,
Titanium dioxide, strontium fluoride, magnesium carbonate, barium carbonate, nitrided ferro-chromium, mid-carbon fe-mn, molybdenum powder, basalt, fish-eye stone and diopside are made,
Wherein its slag making of magnesium carbonate and barium carbonate and gas making effect, calcirm-fluoride, strontium fluoride are slag former, adjust slag melting point, fish-eye stone
For potassium, the fluoride silicate mineral of calcium, diopside is calcium and the silicate of magnesium, and fish-eye stone and diopside are respectively provided with anti-oxidation
Effect, and basalt is silica, alundum (Al2O3), the mixture of iron oxide, has the corrosion resistant characteristic of hard wear resistant, this
A little components are combined with appearance of weld is promoted, and reduce weld porosity rate, the liquid metal surface of molten state during welding
Power so as to improve its mobility, promotes the effect of appearance of weld beauty, meanwhile, the intensity height of weld seam, toughness are high, corrosion resistance
By force, beautiful appearance.
Part is illustrated to embody by further advantage, target and the feature of the present invention by following, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Specific embodiment
With reference to specific embodiment, the present invention is described in further detail, those skilled in the art's reference to be made to say
Bright book word can be implemented according to this.
It should be noted that experimental method described in following embodiments, is conventional method unless otherwise specified, institute
Reagent and material are stated, unless otherwise specified, is commercially obtained.
Embodiment 1：
A kind of two phase stainless steel process pipe welding method is specially S22053 two phase stainless steels, comprises the following steps：
1) using V-arrangement butt weld, welding position is all positon；
2) for backing welding with second layer pass weld using argon tungsten-arc welding, the interior protective gas being passed through of welding gun is pure argon
The flow of protective gas is 10-15L/min, and control line energy parameter：Pipeline wall thickness≤10mm, heat input scope are 1.0-
1.5KJ/mm；For pipeline wall thickness between 10-20mm, heat input scope is 1.5-2.5KJ/mm；Pipeline wall thickness is between 20-32mm, line
Energy range is 2.5-4KJ/mm；Control interlayer temperature is less than 250 DEG C until backing welding is soldered with second layer welding bead；
3) full with the weldering of pure argon gas shielded arc welding for the pipeline of wall thickness≤10mm, heat input control is 2.0-
3.0KJ/mm；For wall thickness between the pipeline of 10-32mm, arc welding filling and cosmetic welding, heat input control are layer by hand
2.5-4.0KJ/mm；And interlayer temperature is controlled to be less than 200 DEG C until weldering is full；
4) after the completion of welding, acid wash passivation processing is carried out.
Embodiment 2：
On the basis of embodiment 1, the two phase stainless steel process pipe welding method is led in welding gun in step 2)
The protective gas entered is the mixed gas of argon gas and ammonia, and the volume fraction of ammonia is 2-3%.
In step 3), for the pipeline of 10≤wall thickness ＜ 20mm, using single V grooves, and multilayer welding welding method is used.
Wherein, ER2209 welding wires are used in step 2) argon tungsten-arc welding.
Wherein, in step 3) pure argon gas shielded arc welding, manual electric arc welding using welding rod, using ER2209 welding wires as
Core wire, coating are then made of following component in parts by weight：35 parts of calcirm-fluoride, 12 parts of titanium dioxide, 3 parts of strontium fluoride, magnesium carbonate 5
Part, 5 parts of barium carbonate, 5 parts of nitrided ferro-chromium, 3 parts of mid-carbon fe-mn, 2 parts of molybdenum powder, 6 parts of basalt, 8 parts of fish-eye stone and 1 part of diopside.
Wherein, the preparation method of the welding rod is as follows：Weigh 35 parts of calcirm-fluoride, 12 parts of titanium dioxide, 3 parts of strontium fluoride, carbonic acid
5 parts of magnesium, 5 parts of barium carbonate, 5 parts of nitrided ferro-chromium, 3 parts of mid-carbon fe-mn, 2 parts of molybdenum powder, 6 parts of basalt, 8 parts of fish-eye stone and diopside 1
Part, the potassium-sodium water glass for adding in the 15-20% for accounting for its mixture total weight after mixing does bonding agent, by mixture coated in weldering
Silk is outer, is suppressed through hydraulic type electrode extrusion press, dries 1.5h at 150 DEG C, 0.5h is dried at 400 DEG C.
Wherein, the mass percent that coating accounts for welding rod is 35%.
Embodiment 3：
On the basis of embodiment 1, the two phase stainless steel process pipe welding method is led in welding gun in step 2)
The protective gas entered is the mixed gas of argon gas and ammonia, and the volume fraction of ammonia is 2-3%.
Wherein, in step 3), for the pipeline of 20≤wall thickness≤32mm, using upper and lower compound V-butt, and using more
Layer multi-pass welding welding method.
Wherein, ER2209 welding wires are used in step 2) argon tungsten-arc welding.
Wherein, in step 3) pure argon gas shielded arc welding, manual electric arc welding using welding rod, using ER2209 welding wires as
Core wire, coating are then made of following component in parts by weight：45 parts of calcirm-fluoride, 18 parts of titanium dioxide, 5 parts of strontium fluoride, magnesium carbonate 8
Part, 8 parts of barium carbonate, 8 parts of nitrided ferro-chromium, 5 parts of mid-carbon fe-mn, 5 parts of molybdenum powder, 10 parts of basalt, 12 parts of fish-eye stone and diopside 2
Part.
Wherein, the preparation method of the welding rod is as follows：Weigh 45 parts of calcirm-fluoride, 18 parts of titanium dioxide, 5 parts of strontium fluoride, carbonic acid
8 parts of magnesium, 8 parts of barium carbonate, 8 parts of nitrided ferro-chromium, 5 parts of mid-carbon fe-mn, 5 parts of molybdenum powder, 10 parts of basalt, 12 parts of fish-eye stone and diopside
2 parts, the potassium-sodium water glass for adding in the 15-20% for accounting for its mixture total weight after mixing does bonding agent, and mixture is coated in
Outside welding wire, suppressed through hydraulic type electrode extrusion press, dry 1.5h at 150 DEG C, 0.5h is dried at 400 DEG C.
Wherein, the mass percent that coating accounts for welding rod is 40%.
Embodiment 3 is most thick two phase stainless steel process pipe, and after the completion of welding, flaw detection slice, thin piece amounts to 3776, once
It is 3776 qualified, qualification rate 100%.Present inventor carries out welding point physicochemical property examination for the weld seam of embodiment 3
It tests, the results showed that, the ferrite content of weld actual measurement illustrates austenite and ferritic within defined ferrite content
Ratio control is about the same, meets the requirements；Welding point has good resisting corrosion of chlorine ion performance；The tension of welding point is strong
Spend for 988-1000MPa, surrender degree is 762-795MPa, face it is curved with to carry on the back curved 180 ° qualified, the average impact values of weld seam are
72J, the average impact value of heat affected area is 77J；There is not Hydrogen Brittleness Phenomena in welding point, and cracking breakout 0% illustrates anti-cold cracking
Property is strong.
Although the embodiments of the present invention have been disclosed as above, but its be not restricted in specification and embodiment it is listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, it is of the invention and unlimited
In specific details and shown here as the embodiment with description.
Claims (6)
- Be specially S22053 two phase stainless steels 1. a kind of two phase stainless steel process pipe welding method, which is characterized in that including with Lower step：1) using V-arrangement butt weld, welding position is all positon；2) for backing welding with second layer pass weld using argon tungsten-arc welding, the interior protective gas being passed through of welding gun is pure argon or argon The mixed gas of gas and ammonia, the volume fraction of ammonia is 2-3% in mixed gas, and the flow of protective gas is 10-15L/ Min, and control line energy parameter：Pipeline wall thickness≤10mm, heat input scope are 1.0-1.5KJ/mm；Pipeline wall thickness is between 10- 20mm, heat input scope are 1.5-2.5KJ/mm；For pipeline wall thickness between 20-32mm, heat input scope is 2.5-4KJ/mm；Control Interlayer temperature is less than 250 DEG C until backing welding is soldered with second layer welding bead；3) full with the weldering of pure argon gas shielded arc welding for the pipeline of wall thickness≤10mm, heat input control is 2.0-3.0KJ/ mm；For wall thickness between the pipeline of 10-32mm, arc welding filling and cosmetic welding, heat input control are 2.5- to layer by hand 4.0KJ/mm；And interlayer temperature is controlled to be less than 200 DEG C until weldering is full；4) after the completion of welding, acid wash passivation processing is carried out；Pure argon gas shielded arc welding, manual electric arc welding are using welding rod, using ER2209 welding wires as core wire, coating in step 3) Then it is made of following component in parts by weight：35-45 parts of calcirm-fluoride, 12-18 parts of titanium dioxide, 3-5 parts of strontium fluoride, magnesium carbonate 5- 8 parts, 5-8 parts of barium carbonate, 5-8 parts of nitrided ferro-chromium, 3-5 parts of mid-carbon fe-mn, 2-5 parts of molybdenum powder, 6-10 parts of basalt, fish-eye stone 8-12 1-2 parts of part and diopside.
- 2. two phase stainless steel process pipe welding method as described in claim 1, which is characterized in that in step 3), for The pipeline of 10≤wall thickness ＜ 20mm using single V grooves, and uses multilayer welding welding method.
- 3. two phase stainless steel process pipe welding method as described in claim 1, which is characterized in that in step 3), for The pipeline of 20≤wall thickness≤32mm using upper and lower compound V-butt, and uses multi-pass welding welding method.
- 4. two phase stainless steel process pipe welding method as described in claim 1, which is characterized in that step 2) argon tungsten-arc welding It is middle to use ER2209 welding wires.
- 5. two phase stainless steel process pipe welding method as described in claim 1, which is characterized in that the preparation side of the welding rod Method is as follows：Weigh 35-45 parts of calcirm-fluoride, 12-18 parts of titanium dioxide, 3-5 parts of strontium fluoride, 5-8 parts of magnesium carbonate, 5-8 parts of barium carbonate, nitrogen Change 1-2 parts of 5-8 parts of ferrochrome, 3-5 parts of mid-carbon fe-mn, 2-5 parts of molybdenum powder, 6-10 parts of basalt, 8-12 parts of fish-eye stone and diopside, mix It closes the uniform potassium-sodium water glass for adding in the 15-20% for accounting for its mixture total weight afterwards and does bonding agent, mixture is coated in outside welding wire, It is suppressed through hydraulic type electrode extrusion press, dries 1.5h at 150 DEG C, 0.5h is dried at 400 DEG C.
- 6. two phase stainless steel process pipe welding method as described in claim 1, which is characterized in that coating accounts for the quality of welding rod Percentage is 35-40%.
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