CN104741834A - Flux-cored wire for welding X90 pipeline steel and preparing method thereof - Google Patents
Flux-cored wire for welding X90 pipeline steel and preparing method thereof Download PDFInfo
- Publication number
- CN104741834A CN104741834A CN201510101191.5A CN201510101191A CN104741834A CN 104741834 A CN104741834 A CN 104741834A CN 201510101191 A CN201510101191 A CN 201510101191A CN 104741834 A CN104741834 A CN 104741834A
- Authority
- CN
- China
- Prior art keywords
- powder
- welding
- flux
- cored wire
- fluoride
- 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.)
- Granted
Links
Classifications
-
- 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
- B23K35/368—Selection of non-metallic compositions of core 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
Abstract
The invention discloses a flux-cored wire for welding X90 pipeline steel. The flux-cored wire for welding the X90 pipeline steel comprises a flux core and skin. The flux core comprises, by mass, 30%-55% of fluoride, 10%-20% of oxide, 2%-5% of carbonate, 7%-10% of Al-Mg, 8%-15% of nickel powder, 0.5%-2.5% of chromium powder, 3%-6% of molybdenum powder, 1%-3% of copper powder, 10%-15% of electrolytic manganese metal, 1%-4% of ferrocolumbium, 0.5-1.5% of ferrotitanium, and 2%-4% of ferrosilicon. According to the flux-cored wire for welding the X90 pipeline steel, through control over the addition of the denitrfying agent and the oxygen agent and the slag making function and the gas making function of the fluoride, a good slag-gas-metal triune self-protection function is achieved; the arcing performance and the arc stabilizing performance are good, the fluidity of a molten bath is high, splashed particles are fine and small, slag is evenly covered after welding, slag removal is easy, and formed weld joints are delicate and attractive.
Description
Technical field
The invention belongs to welding material of metal technical field, be specifically related to a kind of flux-cored wire for the welding of X90 pipe line steel, the invention still further relates to the preparation method of this flux-cored wire.
Background technology
Along with the demand sustainable growth in the world of oil, natural gas, raising transfer efficiency, reduction pipeline installation expense become the important ring in global economy, and therefore high grade pipe line steel will become the main steel that oil-gas pipeline is laid.Therefore the problem developing match with it welding material and packaged process and product development becomes the most important thing.The self-protection flux-cored wire developed that welding technological properties is good, mechanical property is excellent, efficiency of construction is high and can meet all-position welding construction greatly will solve the development problem of coupling wlding.Current X90 is application among a small circle, the flux-cored wire that market does not match with it, and mostly utilizes submerged arc welding, is difficult to conduct a field operation.
Summary of the invention
The object of this invention is to provide a kind of flux-cored wire for the welding of X90 pipe line steel, this flux-cored wire has self-shield effect; The starting the arc and stabilising arc functional, splashing particle is tiny, and postwelding slag covers evenly, and de-slag is easy, and appearance of weld is careful attractive in appearance.
Another object of the present invention is to provide a kind of preparation method of the flux-cored wire for the welding of X90 pipe line steel.
The technical solution adopted in the present invention is, a kind of flux-cored wire for the welding of X90 pipe line steel, comprise medicine core and crust, medicine core is composed of the following components by mass percentage: fluoride 30% ~ 55%, oxide 10% ~ 20%, carbonate 2% ~ 5%, Al-Mg alloyed powder 7% ~ 10%, nickel powder 8% ~ 15%, chromium powder 0.5% ~ 2.5%, molybdenum powder 3% ~ 6%, copper powder 1% ~ 3%, electrolytic manganese metal 10% ~ 15%, ferro-niobium 1% ~ 4%, ferrotianium 0.5% ~ 1.5%, ferrosilicon 2% ~ 4%, the mass percent sum of each component is 100%.
Feature of the present invention is also,
Fluoride is barium fluoride and lithium fluoride take mass ratio as the mixture that 6:1 forms.
Oxide is the mixture of magnesia, alundum (Al2O3), titanium oxide and silica.
Carbonate is sodium carbonate.
Another technical scheme of the present invention is, a kind of preparation method of the flux-cored wire for the welding of X90 pipe line steel, and concrete steps are as follows:
Step 1, takes fluoride 30% ~ 55% respectively according to mass percent, oxide 10% ~ 20%, carbonate 2% ~ 5%, Al-Mg alloyed powder 7% ~ 10%, nickel powder 8% ~ 15%, chromium powder 0.5% ~ 2.5%, molybdenum powder 3% ~ 6%, copper powder 1% ~ 3%, electrolytic manganese metal 10% ~ 15%, ferro-niobium 1% ~ 4%, ferrotianium 0.5% ~ 1.5%, ferrosilicon 2% ~ 4%, the mass percent sum of each component is 100%;
Step 2, put in atomizing comminutor after fluoride, oxide and carbonate are carried out being dry mixed process in mixed powder machine, make binding agent with water and carry out granulation, grain diameter controls at 2 ~ 3mm;
Step 3, particle step 2 obtained is broken after oversintering, and filtering out granularity is 60 ~ 100 object medicinal powder;
Step 4, medicinal powder step 3 obtained mixes with Al-Mg alloyed powder, nickel powder, chromium powder, molybdenum powder, copper powder, electrolytic manganese metal, ferro-niobium, ferrotianium, ferrosilicon and obtains medicine core powder;
Step 5, medicine core powder step 4 obtained is placed on flux-cored wire production equipment charger, the common low carbon cold-rolled strip of size 14 × 0.6 (mm) is prevented putting on band machine, through steel strip cleaning device, carry out rolling U-type groove and adding powder operating after carrying out alkali cleaning, warm water cleaning, drying and processing, control filling rate 14.5 ~ 15.5%, carry out steel band by forming machine subsequently and heal up, form the welding wire of diameter 4.0mm;
Step 6, welding wire step 5 obtained is entering rough equipment, through 6 road tube reducing process, then on the paying out machine of finish draw production line, carries out the finish draw process of 9 grades of tube reducings, obtains the welding wire of diameter 1.2mm.
Feature of the present invention is also,
Fluoride, oxide and carbonate in step 1, dry 1.5h before taking at 250 DEG C; Al-Mg alloyed powder, nickel powder, chromium powder, molybdenum powder, copper powder, electrolytic manganese metal, ferro-niobium, ferrotianium, ferrosilicon, dry 1.5h before taking at 150 DEG C.
The mixture of in step 1, fluoride is fluoride to be barium fluoride and lithium fluoride with mass ratio be 6:1 composition; Oxide is the mixture of magnesia, alundum (Al2O3), titanium oxide and silica; Carbonate is sodium carbonate.
Being dry mixed the processing time in step 2 is 0.5 ~ 0.8h.
In step 3, sintering temperature is 700 ~ 750 DEG C, and the time is 0.5 ~ 0.8h.
The invention has the beneficial effects as follows,
1. the present invention is used for the flux-cored wire of X90 pipe line steel welding, by controlling denitrogenation, the adding of oxygen agent (Al-Mg alloyed powder, ferromanganese), be equipped with the slag making of fluoride and carbonate, gas making function again, reach the Trinitarian self-shield effect of good slag-gas-Jin; The starting the arc and stabilising arc functional, molten bath good fluidity, splashing particle is tiny, and postwelding slag covers evenly, and de-slag is easy, and appearance of weld is careful attractive in appearance.
2. the present invention is used for the preparation method of the welding wire of X90 pipe line steel full position welding, medicinal powder after pretreatment, granularity is comparatively even, the proportion of mineral powder is greatly improved, the filling rate of medicinal powder can be good at controlling, and meanwhile, the mobility of medicinal powder is better, the welding wire medicinal powder produced is even, stable performance.
Accompanying drawing explanation
Fig. 1 is the metallographic structure figure of Weld pipe mill after the welding wire welding using the embodiment of the present invention 1 to prepare;
Fig. 2 is the metallographic structure figure of Weld pipe mill after the welding wire welding using the embodiment of the present invention 2 to prepare;
Fig. 3 is the metallographic structure figure of Weld pipe mill after the welding wire welding using the embodiment of the present invention 3 to prepare.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
The present invention is used for the flux-cored wire of X90 pipe line steel welding, comprise medicine core and crust, medicine core is composed of the following components by mass percentage: fluoride 30% ~ 55%, oxide 10% ~ 20%, carbonate 2% ~ 5%, Al-Mg alloyed powder 7% ~ 10%, nickel powder 8% ~ 15%, chromium powder 0.5% ~ 2.5%, molybdenum powder 3% ~ 6%, copper powder 1% ~ 3%, electrolytic manganese metal 10% ~ 15%, ferro-niobium 1% ~ 4%, ferrotianium 0.5% ~ 1.5%, ferrosilicon 2% ~ 4%, the mass percent sum of each component is 100%.
Fluoride is barium fluoride and lithium fluoride take mass ratio as the mixture that 6:1 forms.
Oxide is the mixture of magnesia, alundum (Al2O3), titanium oxide and silica.
Carbonate is sodium carbonate.
The preparation method of the above-mentioned flux-cored wire for the welding of X90 pipe line steel, concrete steps are as follows:
Step 1, takes fluoride 30% ~ 55% respectively according to mass percent, oxide 10% ~ 20%, carbonate 2% ~ 5%, Al-Mg alloyed powder 7% ~ 10%, nickel powder 8% ~ 15%, chromium powder 0.5% ~ 2.5%, molybdenum powder 3% ~ 6%, copper powder 1% ~ 3%, electrolytic manganese metal 10% ~ 15%, ferro-niobium 1% ~ 4%, ferrotianium 0.5% ~ 1.5%, ferrosilicon 2% ~ 4%, the mass percent sum of each component is 100%;
Wherein fluoride, oxide and carbonate, dries 1.5h before taking at 250 DEG C; Al-Mg alloyed powder, nickel powder, chromium powder, molybdenum powder, copper powder, electrolytic manganese metal, ferro-niobium, ferrotianium, ferrosilicon, dry 1.5h before taking at 150 DEG C;
Fluoride is barium fluoride and lithium fluoride take mass ratio as the mixture that 6:1 forms; Oxide is the mixture of magnesia, alundum (Al2O3), titanium oxide and silica; Carbonate is sodium carbonate;
Step 2, put in atomizing comminutor after fluoride, oxide and carbonate are carried out being dry mixed process 0.5 ~ 0.8h in mixed powder machine, make binding agent with water and carry out granulation, grain diameter controls at 2 ~ 3mm;
Step 3, particle step 2 obtained is 700 ~ 750 DEG C through sintering temperature, and the time is 0.5 ~ 0.8h, and then broken, filtering out granularity is 60 ~ 100 object medicinal powder;
Step 4, medicinal powder step 3 obtained mixes with Al-Mg alloyed powder, nickel powder, chromium powder, molybdenum powder, copper powder, electrolytic manganese metal, ferro-niobium, ferrotianium, ferrosilicon and obtains medicine core powder;
Step 5, medicine core powder step 4 obtained is placed on flux-cored wire production equipment charger, the common low carbon cold-rolled strip of size 14 × 0.6 (mm) is prevented putting on band machine, through steel strip cleaning device, carry out rolling U-type groove and adding powder operating after carrying out alkali cleaning, warm water cleaning, drying and processing, control filling rate 14.5 ~ 15.5%, carry out steel band by forming machine subsequently and heal up, form the welding wire of diameter 4.0mm;
Step 6, welding wire step 5 obtained is entering rough equipment, through 6 road tube reducing process, then on the paying out machine of finish draw production line, carries out the finish draw process of 9 grades of tube reducings, obtains the welding wire of diameter 1.2mm.
Use a large amount of fluorides (30% ~ 55%) as gas making, slag former in the present invention, its main component is BaF
2and LiF.The compound of Ba can support very short electric arc in welding process, and LiF, as a kind of fluoride, reduces viscosity coefficient of dross and fusing point except having, and outside the effect of increase slag fluidity, its topmost effect is stable arc.
Oxide (MgO, Al
2o
3, TiO
2, SiO
2), be very important a kind of component in self-protection flux-cored wire slag system, the improvement of welding technological properties and mechanical property is played a very important role.
Al
2o
3the viscosity of slag can be adjusted, improve the mobility of slag, make ripple fine and closely woven.But work as Al
2o
3when content is more than 5%, viscosity coefficient of dross also can raise, and viscosity is too high, and weld seam easily produces undercut.
MgO, TiO
2, SiO
2mainly regulate basicity, improve processing performance and the mechanical property of weld seam.
Al-Mg alloy is deoxidier conventional in self-protection flux-cored wire.Therefore Mg add the addition that can reduce Al, thus be beneficial to the content controlling Al in deposited metal.In alloy, the boiling point of Mg is lower, produces Mg steam under the effect of welding arc, can reduce the nitrogen partial pressure in arc atmosphere, but consumption crosses the very large flue dust of conference generation, and splashing is increased.Al has deoxidation, nitrogen fixation, is conventional deoxidier and nitrogen fixation agent, effectively can prevent the generation of pore in weld seam, play a very good protection.So the addition of A1-Mg should control in 7 ~ 12% scopes.
Mn is austenitizing stable element, can reduce the temperature of austenite to ferritic transformation.Mn in weld metal serves as solution strengthening constituent element, in the scope of Mn≤2.0%, along with the increase of Mn content, the quantity of acicular ferrite increases, the quantity of pro-eutectoid ferrite and ferrite side plate reduces, and make the grain size of acicular ferrite become more tiny, Mn also can improve the intensity of weld metal while improving weld metal toughness.Mn in welding wire can also play the effect of deoxidation, and can generate stable MnS with reaction of Salmon-Saxl, thus reduces the generation of low melting point phase FeS, is conducive to improving the heat resistanceheat resistant crackle of weld metal and the ability of lamellar tearing.In weld seam, the mechanical property of the content Resistance of Weld Metal of Mn has a great impact, with the increase of Mn content, yield strength and the hot strength of weld metal linearly increase, often increasing 0.01%Mn can make the yield strength of weld seam and hot strength increase 10MPa, although Mn does not increase the room temperature impact toughness of weld metal, significantly reduce brittle transition temperature.
Ni is austenite stabilizer element, and Ni is infinitely solid-solution in γ-Fe, in weld metal, also play solution strengthening effect, can increase acicular ferrite and separate out, thinning microstructure.The effect of Ni is similar to Mn, just weak compared with the effect of Mn, is weak reinforced alloys element.Within the scope of the whole cooling velocity of weld metal, Ni can make phase transition temperature reduce, and make ferrite side plate start transition temperature reduce degree be obviously greater than the reduction that acicular ferrite starts transition temperature.Time in weld metal containing Mn, this effect of Ni is more conducive to the formation of acicular ferrite.
Cr is strongly formed and stablizes ferritic element, and the basis of carbon steel adds the chromium of q.s, both can make steel in Oxidant, produce ferrochrome oxide (FeCr) that is a kind of and matrix strong bonded
2o
3passivating film; Effectively can improve again the pitting potential value of steel, reduce steel to the sensitiveness of spot corrosion.Cr improves corrosion proof effect and meets n/8 law.Along with the increase of Cr content, some intermetallic compounds are separated out the tendency formed and are increased, and the existence of these intermetallic compounds not only significantly reduces plasticity and the toughness of steel, and also reduces the corrosion resistance of steel in some conditions.
Mo is ferrite former, and Mo can resist chlorion (Cl
-) spot corrosion that produces, and Mo be added on the intensity increasing steel while, and toughness does not reduce.Mo Main Function improves corrosion resistance, cryogenic mechanics performance, elevated temperature strength and temper resistance.
Embodiment 1
Step 1, takes barium fluoride 471.5g respectively, lithium fluoride 78.5g, magnesia 20g, alundum (Al2O3) 30g, titanium oxide 10g, silica 40g, sodium carbonate 20g, Al-Mg alloyed powder 70g, nickel powder 80g, chromium powder 5g, molybdenum powder 30g, copper powder 10g, electrolytic manganese metal 100g, ferro-niobium 10g, ferrotianium 5g, ferrosilicon 20g;
Step 2, put in atomizing comminutor after barium fluoride, lithium fluoride, magnesia, alundum (Al2O3), titanium oxide, silica and sodium carbonate being carried out in mixed powder machine be dry mixed process 0.5h, make binding agent with water and carry out granulation, grain diameter controls at 2 ~ 3mm;
Step 3, broken after particle step 2 obtained sinters 0.8h at 700 DEG C, filtering out granularity is 60 ~ 100 object medicinal powder;
Step 4, medicinal powder step 3 obtained mixes with Al-Mg alloyed powder, nickel powder, chromium powder, molybdenum powder, copper powder, electrolytic manganese metal, ferro-niobium, ferrotianium, ferrosilicon, obtains medicine core powder;
Step 5, medicine core powder step 4 obtained is placed on flux-cored wire production equipment charger, the common low carbon cold-rolled strip of size 14 × 0.6 (mm) is prevented putting on band machine, through steel strip cleaning device, carry out rolling U-type groove and adding powder operating after carrying out alkali cleaning, warm water cleaning, drying and processing, control filling rate 15 ± 0.5%, carry out steel band by forming machine subsequently and heal up, form the welding wire of diameter 4.0mm;
Step 6, welding wire step 5 obtained is entering rough equipment, through 6 road tube reducing process, then on the paying out machine of finish draw production line, carries out the finish draw process of 9 grades of tube reducings, obtains the welding wire of diameter 1.2mm.
Embodiment 2
Step 1, takes barium fluoride 257g, lithium fluoride 43g respectively, magnesia 100g, alundum (Al2O3) 30g, titanium oxide 50g, silica 20g, sodium carbonate 30g, Al-Mg alloyed powder 90g, nickel powder 100g, chromium powder 10g, molybdenum powder 50g, copper powder 20g, electrolytic manganese metal 120g, ferro-niobium 30g, ferrotianium 10g, ferrosilicon 40g;
Step 2, put in atomizing comminutor after barium fluoride, lithium fluoride, magnesia, alundum (Al2O3), titanium oxide, silica and sodium carbonate being carried out in mixed powder machine be dry mixed process 0.6h, make binding agent with water and carry out granulation, grain diameter controls at 2 ~ 3mm;
Step 3, broken after particle step 2 obtained sinters 0.7h at 720 DEG C, filtering out granularity is 60 ~ 100 object medicinal powder;
Step 4, medicinal powder step 3 obtained mixes with Al-Mg alloyed powder, nickel powder, chromium powder, molybdenum powder, copper powder, electrolytic manganese metal, ferro-niobium, ferrotianium, ferrosilicon, obtains medicine core powder;
Step 5, medicine core powder step 4 obtained is placed on flux-cored wire production equipment charger, the common low carbon cold-rolled strip of size 14 × 0.6 (mm) is prevented putting on band machine, through steel strip cleaning device, carry out rolling U-type groove and adding powder operating after carrying out alkali cleaning, warm water cleaning, drying and processing, control filling rate 15 ± 0.5%, carry out steel band by forming machine subsequently and heal up, form the welding wire of diameter 4.0mm;
Step 6, welding wire step 5 obtained is entering rough equipment, through 6 road tube reducing process, then on the paying out machine of finish draw production line, carries out the finish draw process of 9 grades of tube reducings, obtains the welding wire of diameter 1.2mm.
Embodiment 3
Step 1, takes barium fluoride 342.9g, lithium fluoride 57.1g respectively, magnesia 20g, alundum (Al2O3) 40g, titanium oxide 50g, silica 1 0g, sodium carbonate 50g, Al-Mg alloyed powder 80g, nickel powder 80g, chromium powder 15g, molybdenum powder 40g, copper powder 10g, electrolytic manganese metal 150g, ferro-niobium 20g, ferrotianium 5g, ferrosilicon 30g;
Step 2, put in atomizing comminutor after barium fluoride, lithium fluoride, magnesia, alundum (Al2O3), titanium oxide, silica and sodium carbonate being carried out in mixed powder machine be dry mixed process 0.7h, make binding agent with water and carry out granulation, grain diameter controls at 2 ~ 3mm;
Step 3, broken after particle step 2 obtained sinters 0.5h at 750 DEG C, filtering out granularity is 60 ~ 100 object medicinal powder;
Step 4, medicinal powder step 3 obtained mixes with Al-Mg alloyed powder, nickel powder, chromium powder, molybdenum powder, copper powder, electrolytic manganese metal, ferro-niobium, ferrotianium, ferrosilicon, obtains medicine core powder;
Step 5, medicine core powder step 4 obtained is placed on flux-cored wire production equipment charger, the common low carbon cold-rolled strip of size 14 × 0.6 (mm) is prevented putting on band machine, through steel strip cleaning device, carry out rolling U-type groove and adding powder operating after carrying out alkali cleaning, warm water cleaning, drying and processing, control filling rate 15 ± 0.5%, carry out steel band by forming machine subsequently and heal up, form the welding wire of diameter 4.0mm;
Step 6, welding wire step 5 obtained is entering rough equipment, through 6 road tube reducing process, then on the paying out machine of finish draw production line, carries out the finish draw process of 9 grades of tube reducings, obtains the welding wire of diameter 1.2mm.
Embodiment 4
Step 1, takes barium fluoride 274.3g, lithium fluoride 45.7g respectively, magnesia 10g, alundum (Al2O3) 30g, titanium oxide 30g, silica 30g, sodium carbonate 40g, Al-Mg alloyed powder 100g, nickel powder 150g, chromium powder 25g, molybdenum powder 60g, copper powder 30g, electrolytic manganese metal 100g, ferro-niobium 40g, ferrotianium 15g, ferrosilicon 20g;
Step 2, put in atomizing comminutor after barium fluoride, lithium fluoride, magnesia, alundum (Al2O3), titanium oxide, silica and sodium carbonate being carried out in mixed powder machine be dry mixed process 0.8h, make binding agent with water and carry out granulation, grain diameter controls at 2 ~ 3mm;
Step 3, broken after particle step 2 obtained sinters 0.6h at 730 DEG C, filtering out granularity is 60 ~ 100 object medicinal powder;
Step 4, medicinal powder step 3 obtained mixes with Al-Mg alloyed powder, nickel powder, chromium powder, molybdenum powder, copper powder, electrolytic manganese metal, ferro-niobium, ferrotianium, ferrosilicon, obtains medicine core powder;
Step 5, medicine core powder step 4 obtained is placed on flux-cored wire production equipment charger, the common low carbon cold-rolled strip of size 14 × 0.6 (mm) is prevented putting on band machine, through steel strip cleaning device, carry out rolling U-type groove and adding powder operating after carrying out alkali cleaning, warm water cleaning, drying and processing, control filling rate 15 ± 0.5%, carry out steel band by forming machine subsequently and heal up, form the welding wire of diameter 4.0mm;
Step 6, welding wire step 5 obtained is entering rough equipment, through 6 road tube reducing process, then on the paying out machine of finish draw production line, carries out the finish draw process of 9 grades of tube reducings, obtains the welding wire of diameter 1.2mm.
The mechanical experimental results of the welding wire that embodiment 1,2,3,4 prepares is in table 1.
The corresponding mechanical experimental results of table 1 embodiment 1 ~ 4
Fig. 1 is the metallographic structure figure of Weld pipe mill after the welding wire welding using the embodiment of the present invention 1 to prepare; Fig. 2 is the metallographic structure figure of Weld pipe mill after the welding wire welding using the embodiment of the present invention 2 to prepare; Fig. 3 is the metallographic structure figure of Weld pipe mill after the welding wire welding using the embodiment of the present invention 3 to prepare, as can be seen from Fig. 1,2,3, after embodiment 1,2,3 obtains welding wire welding, the tissue of Weld pipe mill is mainly the mixture of acicular ferrite and lath-shaped bainite, separately has a little granular bainite and carbonization precipitate.Ferrite bainite and spicule ferritic are interted and are distributed, and the carbide that crystal boundary and intracrystalline are separated out plays the effect of strengthening.
Claims (9)
1. the flux-cored wire for the welding of X90 pipe line steel, it is characterized in that, comprise medicine core and crust, medicine core is composed of the following components by mass percentage: fluoride 30% ~ 55%, oxide 10% ~ 20%, carbonate 2% ~ 5%, Al-Mg alloyed powder 7% ~ 10%, nickel powder 8% ~ 15%, chromium powder 0.5% ~ 2.5%, molybdenum powder 3% ~ 6%, copper powder 1% ~ 3%, electrolytic manganese metal 10% ~ 15%, ferro-niobium 1% ~ 4%, ferrotianium 0.5% ~ 1.5%, ferrosilicon 2% ~ 4%, the mass percent sum of each component is 100%.
2. the flux-cored wire for the welding of X90 pipe line steel according to claim 1, is characterized in that, fluoride is barium fluoride and lithium fluoride take mass ratio as the mixture that 6:1 forms.
3. the flux-cored wire for the welding of X90 pipe line steel according to claim 1, it is characterized in that, oxide is the mixture of magnesia, alundum (Al2O3), titanium oxide and silica.
4. the flux-cored wire for the welding of X90 pipe line steel according to claim 1, it is characterized in that, carbonate is sodium carbonate.
5., for a preparation method for the flux-cored wire of X90 pipe line steel welding, it is characterized in that, concrete steps are as follows:
Step 1, takes fluoride 30% ~ 55% respectively according to mass percent, oxide 10% ~ 20%, carbonate 2% ~ 5%, Al-Mg alloyed powder 7% ~ 10%, nickel powder 8% ~ 15%, chromium powder 0.5% ~ 2.5%, molybdenum powder 3% ~ 6%, copper powder 1% ~ 3%, electrolytic manganese metal 10% ~ 15%, ferro-niobium 1% ~ 4%, ferrotianium 0.5% ~ 1.5%, ferrosilicon 2% ~ 4%, the mass percent sum of each component is 100%;
Step 2, put in atomizing comminutor after fluoride, oxide and carbonate are carried out being dry mixed process in mixed powder machine, make binding agent with water and carry out granulation, grain diameter controls at 2 ~ 3mm;
Step 3, particle step 2 obtained is broken after oversintering, and filtering out granularity is 60 ~ 100 object medicinal powder;
Step 4, medicinal powder step 3 obtained mixes with Al-Mg alloyed powder, nickel powder, chromium powder, molybdenum powder, copper powder, electrolytic manganese metal, ferro-niobium, ferrotianium, ferrosilicon and obtains medicine core powder;
Step 5, medicine core powder step 4 obtained is placed on flux-cored wire production equipment charger, common low carbon cold-rolled strip is prevented putting on band machine, through steel strip cleaning device, carry out rolling U-type groove and adding powder operating after carrying out alkali cleaning, warm water cleaning, drying and processing, control filling rate 14.5 ~ 15.5%, carry out steel band by forming machine subsequently and heal up, form the welding wire of diameter 4.0mm;
Step 6, welding wire step 5 obtained is entering rough equipment, through 6 road tube reducing process, then on the paying out machine of finish draw production line, carries out the finish draw process of 9 grades of tube reducings, obtains the welding wire of diameter 1.2mm.
6. the preparation method of the flux-cored wire for the welding of X90 pipe line steel according to claim 5, it is characterized in that, fluoride, oxide and carbonate in step 1, dry 1.5h before taking at 250 DEG C; Al-Mg alloyed powder, nickel powder, chromium powder, molybdenum powder, copper powder, electrolytic manganese metal, ferro-niobium, ferrotianium, ferrosilicon, dry 1.5h before taking at 150 DEG C.
7. the preparation method of the flux-cored wire for the welding of X90 pipe line steel according to claim 5, is characterized in that, in step 1, fluoride is barium fluoride and lithium fluoride take mass ratio as the mixture that 6:1 forms; Oxide is the mixture of magnesia, alundum (Al2O3), titanium oxide and silica; Carbonate is sodium carbonate.
8. the preparation method of the flux-cored wire for the welding of X90 pipe line steel according to claim 5, it is characterized in that, being dry mixed the processing time in step 2 is 0.5 ~ 0.8h.
9. the preparation method of the flux-cored wire for the welding of X90 pipe line steel according to claim 5, it is characterized in that, in step 3, sintering temperature is 700 ~ 750 DEG C, and the time is 0.5 ~ 0.8h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510101191.5A CN104741834B (en) | 2015-03-06 | 2015-03-06 | A kind of flux-cored wire welded for X90 pipe line steels and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510101191.5A CN104741834B (en) | 2015-03-06 | 2015-03-06 | A kind of flux-cored wire welded for X90 pipe line steels and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104741834A true CN104741834A (en) | 2015-07-01 |
| CN104741834B CN104741834B (en) | 2017-07-28 |
Family
ID=53582395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510101191.5A Expired - Fee Related CN104741834B (en) | 2015-03-06 | 2015-03-06 | A kind of flux-cored wire welded for X90 pipe line steels and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104741834B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105149815A (en) * | 2015-10-26 | 2015-12-16 | 河北翼辰实业集团有限公司 | Self-shielded flux-cored wire used for downward welding and horizontal position welding |
| CN105798485A (en) * | 2016-05-31 | 2016-07-27 | 西安理工大学 | Self-shielded flux-cored wire for X80 pipeline steel and preparation method of self-shielded flux-cored wire |
| CN107378306A (en) * | 2017-07-31 | 2017-11-24 | 西安理工大学 | WH80 steel Self-protecting flux-cored wire and preparation method thereof |
| CN109804092A (en) * | 2016-10-11 | 2019-05-24 | Posco公司 | Flux-cored wire cold-rolled steel sheet and its manufacturing method |
| CN115008065A (en) * | 2022-05-19 | 2022-09-06 | 北京工业大学 | Flux-cored wire for high entropy of titanium-steel welding seam and preparation method thereof |
| CN115008066A (en) * | 2022-07-06 | 2022-09-06 | 武汉铁锚焊接材料股份有限公司 | Self-protection flux-cored wire for weathering resistant steel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101234461A (en) * | 2007-01-31 | 2008-08-06 | 天津市金桥焊材集团有限公司 | Self-protecting full position high ductility flux-cored wire for X80 level pipeline pipeline steel welding |
| CN103962743A (en) * | 2014-04-30 | 2014-08-06 | 西安理工大学 | Welding stick for all-position welding of X100 pipeline steel and manufacturing method thereof |
| CN104259687A (en) * | 2014-08-08 | 2015-01-07 | 天津市永昌焊丝有限公司 | Metal powder-cored wire for welding X80 high-strength low-alloy pipeline steel |
| CN104259684A (en) * | 2014-07-29 | 2015-01-07 | 洛阳双瑞特种合金材料有限公司 | Self-protection flux-cored wire for welding X90 pipeline steel and manufacturing method of self-protection flux-cored wire |
| CN104308391A (en) * | 2014-10-27 | 2015-01-28 | 武汉铁锚焊接材料股份有限公司 | Flux-cored wire for corrosion-resistant steel |
-
2015
- 2015-03-06 CN CN201510101191.5A patent/CN104741834B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101234461A (en) * | 2007-01-31 | 2008-08-06 | 天津市金桥焊材集团有限公司 | Self-protecting full position high ductility flux-cored wire for X80 level pipeline pipeline steel welding |
| CN103962743A (en) * | 2014-04-30 | 2014-08-06 | 西安理工大学 | Welding stick for all-position welding of X100 pipeline steel and manufacturing method thereof |
| CN104259684A (en) * | 2014-07-29 | 2015-01-07 | 洛阳双瑞特种合金材料有限公司 | Self-protection flux-cored wire for welding X90 pipeline steel and manufacturing method of self-protection flux-cored wire |
| CN104259687A (en) * | 2014-08-08 | 2015-01-07 | 天津市永昌焊丝有限公司 | Metal powder-cored wire for welding X80 high-strength low-alloy pipeline steel |
| CN104308391A (en) * | 2014-10-27 | 2015-01-28 | 武汉铁锚焊接材料股份有限公司 | Flux-cored wire for corrosion-resistant steel |
Non-Patent Citations (1)
| Title |
|---|
| 张敏等: "X100 管线钢自保护药芯焊丝研制及焊接接头性能分析", 《焊接学报》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105149815A (en) * | 2015-10-26 | 2015-12-16 | 河北翼辰实业集团有限公司 | Self-shielded flux-cored wire used for downward welding and horizontal position welding |
| CN105798485A (en) * | 2016-05-31 | 2016-07-27 | 西安理工大学 | Self-shielded flux-cored wire for X80 pipeline steel and preparation method of self-shielded flux-cored wire |
| CN109804092A (en) * | 2016-10-11 | 2019-05-24 | Posco公司 | Flux-cored wire cold-rolled steel sheet and its manufacturing method |
| CN107378306A (en) * | 2017-07-31 | 2017-11-24 | 西安理工大学 | WH80 steel Self-protecting flux-cored wire and preparation method thereof |
| CN107378306B (en) * | 2017-07-31 | 2019-12-24 | 西安理工大学 | Self-protection flux-cored wire for WH80 steel and preparation method thereof |
| CN115008065A (en) * | 2022-05-19 | 2022-09-06 | 北京工业大学 | Flux-cored wire for high entropy of titanium-steel welding seam and preparation method thereof |
| CN115008065B (en) * | 2022-05-19 | 2023-09-01 | 北京工业大学 | Flux-cored wire for high entropy of titanium-steel weld joint and preparation method thereof |
| CN115008066A (en) * | 2022-07-06 | 2022-09-06 | 武汉铁锚焊接材料股份有限公司 | Self-protection flux-cored wire for weathering resistant steel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104741834B (en) | 2017-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104741816A (en) | Flux-cored welding wire for X120 pipeline steel welding and manufacturing method thereof | |
| CN104741834A (en) | Flux-cored wire for welding X90 pipeline steel and preparing method thereof | |
| CN105798485B (en) | X80 pipe line steel self-protection flux-cored wire and preparation method thereof | |
| CN103962743B (en) | For welding wire that X100 pipe line steel full position welds and preparation method thereof | |
| CN106944765B (en) | A kind of self-protection flux-cored wire for X80 pipe line steel | |
| CN103990918B (en) | Welding FV520B Martensite Stainless Steel welding wire and its preparation method | |
| CN106964918B (en) | A kind of all positon underwater wet welding self-protection flux-cored wire of deepwater environment | |
| CN102489902B (en) | Metal powder type flux-cored wire used for welding high-impact-toughness steel | |
| CN102658442B (en) | Low-alloy steel welding electrode with Cr control capacity and FAC resisting capacity of weld metal of basic slag system | |
| CN105269174A (en) | 460MPa-level flux-cored wire for ocean engineering and application thereof | |
| CN104148824B (en) | A kind of high tenacity flux-cored wire for electrogas arc welding | |
| CN103084761B (en) | Self-protection core welding stick used for underwater wet welding | |
| CN111618480A (en) | AC/DC dual-purpose high-manganese austenite ultralow-temperature welding rod | |
| CN107671449A (en) | A kind of precipitation-hardening stainless steel Self-protecting flux-cored wire and preparation method thereof | |
| CN108296667A (en) | A kind of flux-cored wire and preparation method for Underwater Welding | |
| CN105921912A (en) | Self-protective flux-cored wire for 1Cr12Ni2W1MoV stainless steel and preparation method thereof | |
| CN104722962A (en) | High-strength high-toughness gas shield flux-cored wire for high-strength steel | |
| CN104646868A (en) | Self-shielded flux-cored wire for 17-4 ph precipitation-hardening stainless steel and preparation method | |
| CN102873473A (en) | Low-hydrogen alkaline electrode for online welding of X80 pipeline steel | |
| CN107900556A (en) | A kind of austenitic stainless steel self-protection flux-cored wire | |
| CN100423880C (en) | Gas-shielded welding wire for welding high-strength steel | |
| CN106181122A (en) | A kind of seamless submerged arc flux-cored wire for yield strength 550MPa steel | |
| CN108356447A (en) | G520 stainless steels and 25Cr2Ni4MoV steel alloys welding Self-protecting flux-cored wire and preparation method thereof | |
| CN103433642B (en) | Low-hydrogen basic electrode for 1Ni9 low-temperature steel welding and preparation method of low-hydrogen basic electrode | |
| CN106078006A (en) | A kind of 550MPa high-strength steel ultralow-hydrogen low high tenacity seamless flux-cored wire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170728 Termination date: 20210306 |