CN104646858B - A kind of 1Ni9 low-temperature steels metal flux-cored wire and preparation method thereof - Google Patents
A kind of 1Ni9 low-temperature steels metal flux-cored wire and preparation method thereof Download PDFInfo
- Publication number
- CN104646858B CN104646858B CN201510075495.9A CN201510075495A CN104646858B CN 104646858 B CN104646858 B CN 104646858B CN 201510075495 A CN201510075495 A CN 201510075495A CN 104646858 B CN104646858 B CN 104646858B
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- flux
- cored wire
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- medicine core
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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 kind of 1Ni9 low-temperature steels metal flux-cored wire, it is 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%, remaining is iron.The invention also discloses its preparation method：After above-mentioned material is mixed dry, be added in the U-type groove that H08A steel bands are rolled into, roll closure, drawing, stretch, disk into disk, pack.Flux-cored wire of the present invention is used for the welding of 1Ni9 low-temperature steels, and welding point has high intensity and excellent toughness；With 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 is without cleaning；Its preparation method, technique is simple, easy to operate, is adapted to mass production.
Description
Technical field
The invention belongs to technical field of welding materials, and in particular to a kind of 1Ni9 low-temperature steels metal flux-cored wire, this
Invention further relates to the preparation method of the flux-cored wire.
Background technology
- 10 DEG C~-196 DEG C of temperature is generally referred to as " low temperature ", is referred to as during less than -196 DEG C " ultralow temperature ".Various liquefaction
The productions such as oil gas, liquefied ammonia, liquid oxygen, liquid nitrogen, storage container and conveyance conduit and the equipment being on active service under cold situation are referred to as
Low-temperature (low temperature) vessel, manufactures these containers and the steel used in equipment, is referred to as low-temperature steel.
Low-temperature steel can be carried out generally according to the nickel in environment temperature, alloy content, tissue and alloy system, chromium content
Different classifications.It can be divided into by environment temperature：- 20 DEG C~-40 DEG C, -50 DEG C~-80 DEG C, -100 DEG C~-110 DEG C, -196 DEG C~-
269 DEG C of grades, four ranks；It can be divided into low alloy ferritic steel, middle alloy low-carbon martensitic steels by the difference of alloying element and tissue
And high alloyed austenitic steel；By nickel, chromium is whether there is in alloy system, that no nickel, chromium low-temperature steel and nickeliferous, chromium can be divided into again is low
Wen Gang.It is divided into addition by heat treatment method：Micro Alloying low-temperature steel and quenched low-temperature steel；By crystal lattice classification of type：It is divided into body
The ferritic steel for low temperature service of the heart cube and the major class of face-centred cubic austenitic cryogenic steel two.1Ni9 steel is：Alloy low-carbon horse in low temperature
Family name's body-quenched low-temperature steel.
1Ni9 steel is a kind of excellent low temperature mild steel of U.S.'s Inco companies 1940s invention, and its nickel content is
8.5~9.5%, someone is referred to as ferritic steel, to be different from austenitic steel.1Ni9 steel has excellent tough at -196 DEG C
Property and weldability, compared with the stainless steel with premium properties, there is that alloy content is few, cheap；With low temperature aluminium
Alloy is compared, and has the advantages that allowable stress is big, coefficient of thermal expansion is small.Therefore 1Ni9 steel is considered as the excellent material for manufacturing low temperature structure
Material.
The content of the invention
It is an object of the invention to provide a kind of 1Ni9 low-temperature steels metal flux-cored wire, the weldering of 1Ni9 low-temperature steels is exclusively used in
Connect, its welding point has high intensity and excellent toughness.
It is a further object to provide a kind of preparation method of 1Ni9 low-temperature steels metal flux-cored wire.
The technical solution adopted in the present invention is, a kind of 1Ni9 low-temperature steels metal flux-cored wire, by crust and medicine core
Composition, medicine core is metal-powder, composed of the following components by mass percentage：Ni40%-55%, Cr1%-3%, Si2%-
4%, Mn5%-8%, remaining is iron, and above constituent mass percentage sum is 100%.
The features of the present invention is also resided in：
Skin material is H08A steel bands.
The filling rate (mass ratio) of medicine core is 20%-25% in the flux-cored wire.
The medicine core powder size of the flux-cored wire is 80-100 mesh.
A diameter of 1.2-2.0mm of the flux-cored wire.
Another technical scheme of the present invention is, a kind of preparation side of 1Ni9 low-temperature steels metal flux-cored wire
Method, is comprised the following steps that：
Step 1, Ni40%-55%, Cr1%-3%, Si2%-4%, Mn5%-8% are weighed respectively by mass percentage,
Remaining is iron, and above constituent mass percentage sum is 100%；
Step 2, the material that step 1 is weighed is well mixed, is then placed within drying oven and dries, the temperature of drying is
200-300 DEG C, the time is 2-2.5h, obtains medicine core powder；
Step 3, by H08A steel bands be placed on flux-cored wire forming machine put band machine on, H08A steel bands are rolled by forming machine
U-type groove is made, the medicine core powder that step 2 is obtained then is added into U-type groove, the filling rate for controlling medicine core powder is 20%-
25%, then U-type groove is rolled by closure by forming machine, and 1.2mm-2.0mm is drawn to, obtain flux-cored wire；
Step 4, finally flux-cored wire prepared by step 3 is stretched with wire drawing machine, disk is packed into disk.
The beneficial effects of the invention are as follows,
1. flux-cored wire of the present invention is used for the welding of 1Ni9 low-temperature steels, welding point has high intensity and excellent toughness；
With 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
It is smooth, postwelding without cleaning, can continuous sequence, effectively increase welding production efficiency, be suitable for automatic welding device, with compared with
High production efficiency.
2. the preparation method of flux-cored wire of the present invention, technique is simple, easy to operate, it is adapted to mass production.
Embodiment
With reference to embodiment, the present invention is described in detail.
1Ni9 low-temperature steels metal flux-cored wire of the present invention, is made up of crust and medicine core, and medicine core is metal-powder, by matter
Measure percentage composed of the following components：Ni40%-55%, Cr1%-3%, Si2%-4%, Mn5%-8%, remaining is iron, with
Upper constituent mass percentage sum is 100%.Skin material is H08A steel bands.
The filling rate (mass ratio) of medicine core is 20%-25% in the flux-cored wire.The medicine core powder size of the flux-cored wire
It is 80-100 mesh.A diameter of 1.2-2.0mm of the flux-cored wire.
The preparation method of above-mentioned 1Ni9 low-temperature steels metal flux-cored wire, is comprised the following steps that：
Step 1, Ni40%-55%, Cr1%-3%, Si2%-4%, Mn5%-8% are weighed respectively by mass percentage,
Remaining is iron, and above constituent mass percentage sum is 100%；
Step 2, the material that step 1 is weighed is well mixed, is then placed within drying oven and dries, the temperature of drying is
200-300 DEG C, the time is 2-2.5h, obtains medicine core powder；
Step 3, by H08A steel bands be placed on flux-cored wire forming machine put band machine on, H08A steel bands are rolled by forming machine
U-type groove is made, the medicine core powder that step 2 is obtained then is added into U-type groove, the filling rate for controlling medicine core powder is 20%-
25%, then U-type groove is rolled by closure by forming machine, and 1.2mm-2.0mm is drawn to, obtain flux-cored wire；
Step 4, finally flux-cored wire prepared by step 3 is stretched with wire drawing machine, disk is packed into disk.
Flux-cored wire of the present invention is applied to gas metal-arc welding (GMAW), and welding current is 180-240A, and voltage is
20-25V, protective gas is CO2, Ar, or Ar-CO2Mixed gas, gas flow rate is 15-20L/min.Or gas tungstun arc welding
(GTAW) welding current is 130-150A, and protective gas is Ar, and gas flow rate is 15-50L/min.
The effect of each component in medicine core：
Ni has austenitizing effect, and certain Ni elements can make occur required converes instruction in weld seam.Ni is also
With crystal grain thinning, the effect of weld seam low-temperature flexibility is improved.
Cr, Mn can improve the intensity of weld seam to a certain degree.
Si, Mn also have the effect of deoxidation, oxygen element that can be in having removed to a certain degree, purification weld seam.
Iron is used for supplementing residual mass, is that the quality of powder core reaches 100%.
Embodiment 1
Step 1, Ni400g, Cr30g, Si30g, Mn80g, Fe460g are weighed respectively；
Step 2, the powder that step 1 is weighed is well mixed, is then placed within drying oven and dries, the temperature of drying is
200 DEG C, the time is 2h, obtains medicine core powder；
Step 3, wide H08A steel bands are placed on the putting on band machine of flux-cored wire forming machine, by forming machine by H08A steel bands
U-type groove is rolled into, the medicine core powder that step 2 is obtained then is added into U-type groove, the filling rate for controlling medicine core powder is 20%,
U-type groove is rolled by closure by forming machine again, and is drawn to 1.2mm, flux-cored wire is obtained；
Step 4, finally flux-cored wire prepared by step 3 is stretched with wire drawing machine, disk is packed into disk.
The flux-cored wire prepared with embodiment 1, using gas metal-arc welding (GMAW), welding current is 180-
200A, voltage is 22V, and protective gas is CO2, gas flow rate is 15L/min.The tensile strength of welding point is 709Mpa, is bent
The limit is taken for 507Mpa, the contraction percentage of area is 61%, and ballistic work is 130J.Performance meets the use requirement of 1Ni9 steel.
Embodiment 2
Step 1, Ni430g, Cr15g, Si40g, Mn70g, Fe445g are weighed respectively；
Step 2, the powder that step 1 is weighed is well mixed, is then placed within drying oven and dries, the temperature of drying is
240 DEG C, the time is 2.2h, obtains medicine core powder；
Step 3, wide H08A steel bands are placed on the putting on band machine of flux-cored wire forming machine, by forming machine by H08A steel bands
U-type groove is rolled into, the medicine core powder that step 2 is obtained then is added into U-type groove, the filling rate for controlling medicine core powder is 25%,
U-type groove is rolled by closure by forming machine again, and is drawn to 1.4mm, flux-cored wire is obtained；
Step 4, finally flux-cored wire prepared by step 3 is stretched with wire drawing machine, disk is packed into disk.
The flux-cored wire prepared with embodiment 2, using gas metal-arc welding (GMAW), welding current is 190-
200A, voltage is 22V, and protective gas is CO2, gas flow rate is 15L/min.The tensile strength of welding point is 707Mpa, is bent
The limit is taken for 500Mpa, the contraction percentage of area is 60%, and ballistic work is 121J.Performance meets the use requirement of 1Ni9 steel.
Embodiment 3
Step 1, Ni470g, Cr20g, Si20g, Mn60g, Fe430g are weighed respectively；
Step 2, the material that step 1 is weighed is well mixed, is then placed within drying oven and dries, the temperature of drying is
280 DEG C, the time is 2.5h, obtains medicine core powder；
Step 3, wide H08A steel bands are placed on the putting on band machine of flux-cored wire forming machine, by forming machine by H08A steel bands
U-type groove is rolled into, the medicine core powder that step 2 is obtained then is added into U-type groove, the filling rate for controlling medicine core powder is 22%,
U-type groove is rolled by closure by forming machine again, and is drawn to 1.6mm, flux-cored wire is obtained；
Step 4, finally flux-cored wire prepared by step 3 is stretched with wire drawing machine, disk is packed into disk.
The flux-cored wire prepared with embodiment 3, using gas metal-arc welding (GMAW), welding current is 200-
220A, voltage is 23V, and protective gas is CO2, gas flow rate is 17L/min.The tensile strength of welding point is 752Mpa, is bent
The limit is taken for 556Mpa, the contraction percentage of area is 65%, and ballistic work is 119J.Performance meets the use requirement of 1Ni9 steel.
Embodiment 4
Step 1, Ni500g, Cr25g, Si40g, Mn50g, Fe385g are weighed respectively；
Step 2, the material that step 1 is weighed is well mixed, is then placed within drying oven and dries, the temperature of drying is
300 DEG C, the time is 2h, obtains medicine core powder；
Step 3, wide H08A steel bands are placed on the putting on band machine of flux-cored wire forming machine, by forming machine by H08A steel bands
U-type groove is rolled into, the medicine core powder that step 2 is obtained then is added into U-type groove, the filling rate for controlling medicine core powder is 25%,
U-type groove is rolled by closure by forming machine again, and is drawn to 1.8mm, flux-cored wire is obtained；
Step 4, finally flux-cored wire prepared by step 3 is stretched with wire drawing machine, disk is packed into disk.
The flux-cored wire prepared with embodiment 4, using gas metal-arc welding (GMAW), welding current is 220-
240A, voltage is 25V, and protective gas is CO2, gas flow rate is 20L/min.The tensile strength of welding point is 737Mpa, is bent
The limit is taken for 502Mpa, the contraction percentage of area is 62%, and ballistic work is 131J.Performance meets the use requirement of 1Ni9 steel.
Embodiment 5
Step 1, Ni520g, Cr20g, Si30g, Mn70g, Fe360g are weighed respectively；
Step 2, the material that step 1 is weighed is well mixed, is then placed within drying oven and dries, the temperature of drying is
220 DEG C, the time is 2.3h, obtains medicine core powder；
Step 3, wide H08A steel bands are placed on the putting on band machine of flux-cored wire forming machine, by forming machine by H08A steel bands
U-type groove is rolled into, the medicine core powder that step 2 is obtained then is added into U-type groove, the filling rate for controlling medicine core powder is 23%,
U-type groove is rolled by closure by forming machine again, and is drawn to 2.0mm, flux-cored wire is obtained；
Step 4, finally flux-cored wire prepared by step 3 is stretched with wire drawing machine, disk is packed into disk.
The flux-cored wire prepared with embodiment 5, uses gas tungstun arc welding (GTAW) welding current for 130-140A, protects
Shield gas is Ar, and gas flow rate is 15-50L/min.The tensile strength of welding point is 728Mpa, and yield limit is 512Mpa,
The contraction percentage of area is 58%, and ballistic work is 120J.Performance meets the use requirement of 1Ni9 steel.
Embodiment 6
Step 1, Ni550g, Cr10g, Si20g, Mn60g, Fe360g are weighed respectively；
Step 2, the material that step 1 is weighed is well mixed, is then placed within drying oven and dries, the temperature of drying is
260 DEG C, the time is 2h, obtains medicine core powder；
Step 3, wide H08A steel bands are placed on the putting on band machine of flux-cored wire forming machine, by forming machine by H08A steel bands
U-type groove is rolled into, the medicine core powder that step 2 is obtained then is added into U-type groove, the filling rate for controlling medicine core powder is 22%,
U-type groove is rolled by closure by forming machine again, and is drawn to 2.0mm, flux-cored wire is obtained；
Step 4, finally flux-cored wire prepared by step 3 is stretched with wire drawing machine, disk is packed into disk.
The flux-cored wire prepared with embodiment 6, uses gas tungstun arc welding (GTAW) welding current for 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, the contraction percentage of area is 57%, and ballistic work is 134J.Performance meets the use requirement of 1Ni9 steel.
Claims (5)
1. a kind of 1Ni9 low-temperature steels metal flux-cored wire, it is characterised in that be made up of crust and medicine core, medicine core is metal powder
Body, it is composed of the following components by mass percentage：Ni43%-47%, Cr1.5%-2%, Si2%-4%, Mn6%-7%, its
Yu Weitie, above constituent mass percentage sum is 100%, and skin material is H08A steel bands, and the flux-cored wire is applied to molten
Change pole gas shielded arc welding (GMAW), welding current is 180-240A, and voltage is 20-25V, and protective gas is CO2, Ar, or Ar-CO2
Mixed gas, gas flow rate is 15-20L/min, or gas tungstun arc welding (GTAW) welding current is 130-150A, protects gas
Body is Ar, and gas flow rate is 15-50L/min.
2. 1Ni9 low-temperature steels metal flux-cored wire according to claim 1, it is characterised in that the flux-cored wire Chinese medicine
The filling rate (mass ratio) of core is 22%-25%.
3. 1Ni9 low-temperature steels metal flux-cored wire according to claim 1, it is characterised in that the medicine of the flux-cored wire
Core powder size is 80-100 mesh.
4. 1Ni9 low-temperature steels metal flux-cored wire according to claim 1, it is characterised in that the flux-cored wire it is straight
Footpath is 1.2-2.0mm.
5. a kind of preparation method of 1Ni9 low-temperature steels metal flux-cored wire, it is characterised in that comprise the following steps that：
Step 1, Ni43%-47%, Cr1.5%-2%, Si2%-4%, Mn6%-7% are weighed respectively by mass percentage, its
Yu Weitie, above constituent mass percentage sum is 100%；
Step 2, the material that step 1 is weighed is well mixed, is then placed within drying oven and dries, the temperature of drying is 200-
300 DEG C, the time is 2-2.5h, obtains medicine core powder；
Step 3, by H08A steel bands be placed on flux-cored wire forming machine put band machine on, H08A steel bands are rolled into by forming machine
U-type groove, then adds the medicine core powder that step 2 is obtained into U-type groove, and the filling rate for controlling medicine core powder is 22%-25%, then
U-type groove is rolled by closure by forming machine, and is drawn to 1.2mm-2.0mm, flux-cored wire is obtained；
Step 4, finally flux-cored wire prepared by step 3 is stretched with wire drawing machine, disk is packed into disk；
The flux-cored wire is applied to gas metal-arc welding (GMAW), and welding current is 180-240A, and voltage is 20-25V,
Protective gas is CO2, Ar, or Ar-CO2Mixed gas, gas flow rate is 15-20L/min, or gas tungstun arc welding (GTAW)
Welding current is 130-150A, and protective gas is Ar, and gas flow rate is 15-50L/min.
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| Application Number | Priority Date | Filing Date | Title |
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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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| 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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| CN104646858B true CN104646858B (en) | 2017-11-03 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112705879B (en) * | 2020-12-09 | 2022-07-01 | 西安理工大学 | Welding wire for TA1-Cu-Q345 composite plate 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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|---|---|---|---|---|
| CN102085605A (en) * | 2009-12-02 | 2011-06-08 | 中冶焊接科技有限公司 | Flux-cored wire used for submerged arc surfacing repair of furnace bed roll |
| CN102091884A (en) * | 2011-01-25 | 2011-06-15 | 天津大学 | Flux-cored wire capable of generating compressive stress at weld toe of stainless steel weld joint |
| CN102717208A (en) * | 2012-06-08 | 2012-10-10 | 江苏孚尔姆焊业科技有限公司 | Novel calcium titanate slag system flux-cored wire and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20080093351A1 (en) * | 2006-10-19 | 2008-04-24 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Flux-cored wire for gas shielded arc welding for creep-resisting steels |
-
2015
- 2015-02-12 CN CN201510075495.9A patent/CN104646858B/en not_active Expired - Fee Related
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|---|---|---|---|---|
| CN102085605A (en) * | 2009-12-02 | 2011-06-08 | 中冶焊接科技有限公司 | Flux-cored wire used for submerged arc surfacing repair of furnace bed roll |
| CN102091884A (en) * | 2011-01-25 | 2011-06-15 | 天津大学 | Flux-cored wire capable of generating compressive stress at weld toe of stainless steel weld joint |
| CN102717208A (en) * | 2012-06-08 | 2012-10-10 | 江苏孚尔姆焊业科技有限公司 | Novel calcium titanate slag system flux-cored wire and preparation method thereof |
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| 9Ni钢焊接接头低温性能研究;张敏等;《兵器材料科学与工程》;20130731;第36卷(第4期);第10-14页 * |
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