CN104646858A - Metal type flux-cored wire used for 1Ni9 low-temperature steel and preparation method thereof - Google Patents
Metal type flux-cored wire used for 1Ni9 low-temperature steel and preparation method thereof Download PDFInfo
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- CN104646858A CN104646858A CN201510075495.9A CN201510075495A CN104646858A CN 104646858 A CN104646858 A CN 104646858A CN 201510075495 A CN201510075495 A CN 201510075495A CN 104646858 A CN104646858 A CN 104646858A
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- cored wire
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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
- 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
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
- B23K35/3066—Fe as the principal constituent with Ni as next major constituent
-
- 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
- B23K35/40—Making wire or rods for soldering or welding
- B23K35/406—Filled tubular wire or rods
-
- 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
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention discloses a metal type flux-cored wire used for 1Ni9 low-temperature steel. The metal type flux-cored wire used for the 1Ni9 low-temperature steel consists of an outer skin and a flux core, wherein the flux core is metal powder and is prepared from the following ingredients in parts by weight: 40-55% of Ni, 1-3% f Cr, 2-4% of Si, 5-8% of Mn and the balance of Fe. The invention also discloses a preparation method of the metal type flux-cored wire. The preparation method comprises the following steps: mixing and drying the above materials; adding the mixture into a U-shaped groove formed by rolling by H08A steel bands; grinding, closing, drawing, straightening, coiling to obtain a disk, sealing and packaging. The metal type flux-cored wire disclosed by the invention is used for welding the 1Ni9 low-temperature steel, and a welding connector has high intensity and good toughness; the metal type flux-cored wire has the advantages of good welding manufacturability, little welding spatter, little welding smoke and smooth and flat welding line surfaces, is free from a slag inclusion problem in a welding process and does not need to be cleaned after welding; the preparation method has the advantages of simple technology and convenience in operation and is suitable for mass production.
Description
Technical field
The invention belongs to technical field of welding materials, be specifically related to a kind of 1Ni9 low-temperature steel metal flux-cored wire, the invention still further relates to the preparation method of this flux-cored wire.
Background technology
Usually the temperature of-10 DEG C ~-196 DEG C is called " low temperature ", is called " ultralow temperature " lower than when-196 DEG C.Production, reservoir vessel and the conveyance conduits such as various liquefied petroleum gas, liquefied ammonia, liquid oxygen, liquid nitrogen and the equipment of being on active service under cold situation are called low-temperature (low temperature) vessel, manufacture these containers and equipment steel used, are referred to as low-temperature steel.
Nickel in usual environmentally temperature, alloy content, tissue and alloy system, chromium constituent content can carry out difference classification to low-temperature steel.Can be divided into by environment temperature: four ranks such as-20 DEG C ~-40 DEG C ,-50 DEG C ~-80 DEG C ,-100 DEG C ~-110 DEG C ,-196 DEG C ~-269 DEG C; Low alloy ferritic steel, middle alloy low-carbon martensitic steels and high alloyed austenitic steel can be divided into by the difference of alloying element and tissue; Can be divided into again without nickel, chromium low-temperature steel and nickeliferous, chromium low-temperature steel with or without nickel, chromium element by alloy system.Be divided into by heat treatment method in addition: Micro Alloying low-temperature steel and modified low-temperature steel; By crystal lattice classification of type: be divided into body-centred cubic ferritic steel for low temperature service and the large class of face-centred cubic austenitic cryogenic steel two.1Ni9 steel is: alloy low-carbon martensite-modified low-temperature steel in low temperature.
1Ni9 steel is a kind of excellent low temperature mild steel of the American I nco company invention forties in 20th century, and its nickel content is 8.5 ~ 9.5%, and someone is referred to as ferritic steel, to be different from austenitic steel.1Ni9 steel has excellent obdurability and weldability at-196 DEG C, compared with the stainless steel with premium properties, has few, the low-cost advantage of alloy content; Compared with low temperature aluminium alloy, there is the advantage that allowable stress is large, coefficient of thermal expansion is little.Therefore 1Ni9 steel is considered to the excellent material manufacturing low temperature structure.
Summary of the invention
The object of this invention is to provide a kind of 1Ni9 low-temperature steel metal flux-cored wire, be exclusively used in the welding of 1Ni9 low-temperature steel, its welding point has high strength and excellent toughness.
Another object of the present invention is to provide a kind of preparation method of 1Ni9 low-temperature steel metal flux-cored wire.
The technical solution adopted in the present invention is, a kind of 1Ni9 low-temperature steel metal flux-cored wire, be made up of crust and medicine core, medicine core is metal-powder, composed of the following components by mass percentage: Ni40%-55%, Cr1%-3%, Si2%-4%, Mn5%-8%, all the other are iron, and above constituent mass percentage sum is 100%.
Feature of the present invention is also:
Skin material is H08A steel band.
The filling rate (mass ratio) of this flux-cored wire Chinese medicine core is 20%-25%.
The medicine core powder size of this flux-cored wire is 80-100 order.
The diameter of this flux-cored wire is 1.2-2.0mm.
Another technical scheme of the present invention is, a kind of preparation method of 1Ni9 low-temperature steel metal flux-cored wire, and concrete steps are as follows:
Step 1, takes Ni40%-55% by mass percentage respectively, Cr1%-3%, Si2%-4%, Mn5%-8%, and all the other are iron, and above constituent mass percentage sum is 100%;
Step 2, material step 1 taken mixes, and is then placed in drying oven and dries, and the temperature of oven dry is 200-300 DEG C, and the time is 2-2.5h, obtains medicine core powder;
Step 3, what H08A steel band is placed on flux-cored wire forming machine puts on band machine, by forming machine, H08A steel band is rolled into U-type groove, then in U-type groove, add the medicine core powder that step 2 obtains, the filling rate controlling medicine core powder is 20%-25%, U-type groove is rolled closed by forming machine again, and be drawn to 1.2mm-2.0mm, obtain flux-cored wire;
Step 4, finally stretching with the flux-cored wire that step 3 is prepared by wire drawing machine, coil into disk, pack.
The invention has the beneficial effects as follows,
1. flux-cored wire of the present invention is used for the welding of 1Ni9 low-temperature steel, and welding point has high strength and excellent toughness; Have good welding usability, spatter is few, and weld fumes is few, without slag inclusion problem in welding process; Face of weld is bright and clean smooth, and postwelding, can continuous sequence without the need to cleaning, effectively improves welding production efficiency, is suitable for automatic welding device, have higher production efficiency.
2. the preparation method of flux-cored wire of the present invention, technique is simple, easy to operate, is applicable to mass production.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in detail.
1Ni9 low-temperature steel metal flux-cored wire of the present invention, is made up of crust and medicine core, and medicine core is metal-powder, composed of the following components by mass percentage: Ni40%-55%, Cr1%-3%, Si2%-4%, Mn5%-8%, all the other are iron, and above constituent mass percentage sum is 100%.Skin material is H08A steel band.
The filling rate (mass ratio) of this flux-cored wire Chinese medicine core is 20%-25%.The medicine core powder size of this flux-cored wire is 80-100 order.The diameter of this flux-cored wire is 1.2-2.0mm.
The preparation method of above-mentioned 1Ni9 low-temperature steel metal flux-cored wire, concrete steps are as follows:
Step 1, takes Ni40%-55% by mass percentage respectively, Cr1%-3%, Si2%-4%, Mn5%-8%, and all the other are iron, and above constituent mass percentage sum is 100%;
Step 2, material step 1 taken mixes, and is then placed in drying oven and dries, and the temperature of oven dry is 200-300 DEG C, and the time is 2-2.5h, obtains medicine core powder;
Step 3, what H08A steel band is placed on flux-cored wire forming machine puts on band machine, by forming machine, H08A steel band is rolled into U-type groove, then in U-type groove, add the medicine core powder that step 2 obtains, the filling rate controlling medicine core powder is 20%-25%, U-type groove is rolled closed by forming machine again, and be drawn to 1.2mm-2.0mm, obtain flux-cored wire;
Step 4, finally stretching with the flux-cored wire that step 3 is prepared by wire drawing machine, coil into disk, pack.
Flux-cored wire of the present invention is applicable to gas metal-arc welding (GMAW), and welding current is 180-240A, and voltage is 20-25V, and protective gas is CO
2, Ar, or Ar-CO
2mist, gas flow rate is 15-20L/min.Or gas tungstun arc welding (GTAW) welding current is 130-150A, protective gas is Ar, and gas flow rate is 15-50L/min.
The effect of each component in medicine core:
Ni has austenitizing effect, certain Ni element, can make to occur required converes instruction in weld seam.Ni also has crystal grain thinning, improves the effect of weld seam low-temperature flexibility.
Cr, Mn can in the intensity to a certain degree improving weld seam.
Si, Mn also have the effect of deoxidation, can oxygen element in a certain degree removing, purification weld seam.
Iron is used for supplementary residual mass, is that the quality of powder core reaches 100%.
Embodiment 1
Step 1, takes Ni400g respectively, Cr30g, Si30g, Mn80g, Fe460g;
Step 2, powder step 1 taken mixes, and is then placed in drying oven and dries, and the temperature of oven dry is 200 DEG C, and the time is 2h, obtains medicine core powder;
Step 3, what wide H08A steel band is placed on flux-cored wire forming machine puts on band machine, by forming machine, H08A steel band is rolled into U-type groove, then in U-type groove, add the medicine core powder that step 2 obtains, the filling rate controlling medicine core powder is 20%, U-type groove is rolled closed by forming machine again, and be drawn to 1.2mm, obtain flux-cored wire;
Step 4, finally stretching with the flux-cored wire that step 3 is prepared by wire drawing machine, coil into disk, pack.
With flux-cored wire prepared by embodiment 1, adopt gas metal-arc welding (GMAW), welding current is 180-200A, and voltage is 22V, and protective gas is CO
2, gas flow rate is 15L/min.The tensile strength of welding point is 709Mpa, and yield limit is 507Mpa, and the contraction percentage of area is 61%, and ballistic work is 130J.Performance meets the instructions for use of 1Ni9 steel.
Embodiment 2
Step 1, takes Ni430g respectively, Cr15g, Si40g, Mn70g, Fe445g;
Step 2, powder step 1 taken mixes, and is then placed in drying oven and dries, and the temperature of oven dry is 240 DEG C, and the time is 2.2h, obtains medicine core powder;
Step 3, what wide H08A steel band is placed on flux-cored wire forming machine puts on band machine, by forming machine, H08A steel band is rolled into U-type groove, then in U-type groove, add the medicine core powder that step 2 obtains, the filling rate controlling medicine core powder is 25%, U-type groove is rolled closed by forming machine again, and be drawn to 1.4mm, obtain flux-cored wire;
Step 4, finally stretching with the flux-cored wire that step 3 is prepared by wire drawing machine, coil into disk, pack.
With flux-cored wire prepared by embodiment 2, adopt gas metal-arc welding (GMAW), welding current is 190-200A, and voltage is 22V, and protective gas is CO
2, gas flow rate is 15L/min.The tensile strength of welding point is 707Mpa, and yield limit is 500Mpa, and the contraction percentage of area is 60%, and ballistic work is 121J.Performance meets the instructions for use of 1Ni9 steel.
Embodiment 3
Step 1, takes Ni470g respectively, Cr20g, Si20g, Mn60g, Fe430g;
Step 2, material step 1 taken mixes, and is then placed in drying oven and dries, and the temperature of oven dry is 280 DEG C, and the time is 2.5h, obtains medicine core powder;
Step 3, what wide H08A steel band is placed on flux-cored wire forming machine puts on band machine, by forming machine, H08A steel band is rolled into U-type groove, then in U-type groove, add the medicine core powder that step 2 obtains, the filling rate controlling medicine core powder is 22%, U-type groove is rolled closed by forming machine again, and be drawn to 1.6mm, obtain flux-cored wire;
Step 4, finally stretching with the flux-cored wire that step 3 is prepared by wire drawing machine, coil into disk, pack.
With flux-cored wire prepared by embodiment 3, adopt gas metal-arc welding (GMAW), welding current is 200-220A, and voltage is 23V, and protective gas is CO
2, gas flow rate is 17L/min.The tensile strength of welding point is 752Mpa, and yield limit is 556Mpa, and the contraction percentage of area is 65%, and ballistic work is 119J.Performance meets the instructions for use of 1Ni9 steel.
Embodiment 4
Step 1, takes Ni500g respectively, Cr25g, Si40g, Mn50g, Fe385g;
Step 2, material step 1 taken mixes, and is then placed in drying oven and dries, and the temperature of oven dry is 300 DEG C, and the time is 2h, obtains medicine core powder;
Step 3, what wide H08A steel band is placed on flux-cored wire forming machine puts on band machine, by forming machine, H08A steel band is rolled into U-type groove, then in U-type groove, add the medicine core powder that step 2 obtains, the filling rate controlling medicine core powder is 25%, U-type groove is rolled closed by forming machine again, and be drawn to 1.8mm, obtain flux-cored wire;
Step 4, finally stretching with the flux-cored wire that step 3 is prepared by wire drawing machine, coil into disk, pack.
With flux-cored wire prepared by embodiment 4, adopt gas metal-arc welding (GMAW), welding current is 220-240A, and voltage is 25V, and protective gas is CO
2, gas flow rate is 20L/min.The tensile strength of welding point is 737Mpa, and yield limit is 502Mpa, and the contraction percentage of area is 62%, and ballistic work is 131J.Performance meets the instructions for use of 1Ni9 steel.
Embodiment 5
Step 1, takes Ni520g respectively, Cr20g, Si30g, Mn70g, Fe360g;
Step 2, material step 1 taken mixes, and is then placed in drying oven and dries, and the temperature of oven dry is 220 DEG C, and the time is 2.3h, obtains medicine core powder;
Step 3, what wide H08A steel band is placed on flux-cored wire forming machine puts on band machine, by forming machine, H08A steel band is rolled into U-type groove, then in U-type groove, add the medicine core powder that step 2 obtains, the filling rate controlling medicine core powder is 23%, U-type groove is rolled closed by forming machine again, and be drawn to 2.0mm, obtain flux-cored wire;
Step 4, finally stretching with the flux-cored wire that step 3 is prepared by wire drawing machine, coil into disk, pack.
With flux-cored wire prepared by embodiment 5, adopt gas tungstun arc welding (GTAW) welding current to be 130-140A, protective gas is Ar, and gas flow rate is 15-50L/min.The tensile strength of welding point is 728Mpa, and yield limit is 512Mpa, and the contraction percentage of area is 58%, and ballistic work is 120J.Performance meets the instructions for use of 1Ni9 steel.
Embodiment 6
Step 1, takes Ni550g respectively, Cr10g, Si20g, Mn60g, Fe360g;
Step 2, material step 1 taken mixes, and is then placed in drying oven and dries, and the temperature of oven dry is 260 DEG C, and the time is 2h, obtains medicine core powder;
Step 3, what wide H08A steel band is placed on flux-cored wire forming machine puts on band machine, by forming machine, H08A steel band is rolled into U-type groove, then in U-type groove, add the medicine core powder that step 2 obtains, the filling rate controlling medicine core powder is 22%, U-type groove is rolled closed by forming machine again, and be drawn to 2.0mm, obtain flux-cored wire;
Step 4, finally stretching with the flux-cored wire that step 3 is prepared by wire drawing machine, coil into disk, pack.
With flux-cored wire prepared by embodiment 6, adopt gas tungstun arc welding (GTAW) welding current to be 140-150A, protective gas is Ar, and gas flow rate is 15-50L/min.The tensile strength of welding point is 741Mpa, and yield limit is 537Mpa, and the contraction percentage of area is 57%, and ballistic work is 134J.Performance meets the instructions for use of 1Ni9 steel.
Claims (6)
1. a 1Ni9 low-temperature steel metal flux-cored wire, it is characterized in that, be made up of crust and medicine core, medicine core is metal-powder, composed of the following components by mass percentage: Ni40%-55%, Cr1%-3%, Si2%-4%, Mn5%-8%, all the other are iron, and above constituent mass percentage sum is 100%.
2. 1Ni9 low-temperature steel metal flux-cored wire according to claim 1, is characterized in that, skin material is H08A steel band.
3. 1Ni9 low-temperature steel metal flux-cored wire according to claim 1, is characterized in that, the filling rate (mass ratio) of this flux-cored wire Chinese medicine core is 20%-25%.
4. 1Ni9 low-temperature steel metal flux-cored wire according to claim 1, is characterized in that, the medicine core powder size of this flux-cored wire is 80-100 order.
5. 1Ni9 low-temperature steel metal flux-cored wire according to claim 1, is characterized in that, the diameter of this flux-cored wire is 1.2-2.0mm.
6. a preparation method for 1Ni9 low-temperature steel metal flux-cored wire, is characterized in that, concrete steps are as follows:
Step 1, takes Ni40%-55% by mass percentage respectively, Cr1%-3%, Si2%-4%, Mn5%-8%, and all the other are iron, and above constituent mass percentage sum is 100%;
Step 2, material step 1 taken mixes, and is then placed in drying oven and dries, and the temperature of oven dry is 200-300 DEG C, and the time is 2-2.5h, obtains medicine core powder;
Step 3, what H08A steel band is placed on flux-cored wire forming machine puts on band machine, by forming machine, H08A steel band is rolled into U-type groove, then in U-type groove, add the medicine core powder that step 2 obtains, the filling rate controlling medicine core powder is 20%-25%, U-type groove is rolled closed by forming machine again, and be drawn to 1.2mm-2.0mm, obtain flux-cored wire;
Step 4, finally stretching with the flux-cored wire that step 3 is prepared by wire drawing machine, coil into disk, pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510075495.9A CN104646858B (en) | 2015-02-12 | 2015-02-12 | A kind of 1Ni9 low-temperature steels metal flux-cored wire and preparation method thereof |
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|---|---|---|---|
| CN201510075495.9A CN104646858B (en) | 2015-02-12 | 2015-02-12 | A kind of 1Ni9 low-temperature steels metal flux-cored wire and preparation method thereof |
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| CN104646858A true CN104646858A (en) | 2015-05-27 |
| CN104646858B CN104646858B (en) | 2017-11-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112705879A (en) * | 2020-12-09 | 2021-04-27 | 西安理工大学 | Welding wire for TA1-Cu-Q345 steel side transition layer and preparation method |
| CN114669911A (en) * | 2022-04-01 | 2022-06-28 | 南京钢铁股份有限公司 | Flux-cored gas-shielded welding wire for 9% Ni storage tank steel and preparation and use methods thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114669911A (en) * | 2022-04-01 | 2022-06-28 | 南京钢铁股份有限公司 | Flux-cored gas-shielded welding wire for 9% Ni storage tank steel and preparation and use methods thereof |
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|---|---|
| CN104646858B (en) | 2017-11-03 |
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