CN104759788A - OCr13Ni5Mo steel metal flux-cored wire and preparation method thereof - Google Patents
OCr13Ni5Mo steel metal flux-cored wire and preparation method thereof Download PDFInfo
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- CN104759788A CN104759788A CN201510102474.1A CN201510102474A CN104759788A CN 104759788 A CN104759788 A CN 104759788A CN 201510102474 A CN201510102474 A CN 201510102474A CN 104759788 A CN104759788 A CN 104759788A
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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
- B23K35/22—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
- B23K35/406—Filled tubular wire or rods
Abstract
The invention discloses an OCr13Ni5Mo steel metal flux-cored wire. The metal flux-cored wire comprises an outer skin and a flux core. The flux core is formed by, by the mass ratio, 55% to 60% of chromium, 2.5% to 6% of manganese, 4% to 10% of silicon iron, 20% to 25% of nickel, 2.5% to 5% of molybdenum and the rest being iron. The invention further discloses a preparation method. The method comprises mixing and drying flux core materials, adding the mixture into low-carbon steel strips to be rolled into U-shaped grooves to be rolled and closed, pulled and straightened, and the steel strips are coiled into disks to be sealed and packaged. By means of the metal flux-cored wire, martensitic stainless steel weld joint microstructures can be obtained, and welded joints have good mechanical performance and abrasion resistance; the weld seam surface is smooth and flat, cleaning after welding is not needed, welding can be performed continuously, and the welding production efficiency is improved effectively; the metal flux-cored wire is applicable to automatic welding equipment, and the production efficiency is high; the production method is simple, and the metal flux-cored wire is convenient to operate and applicable to batch production.
Description
Technical field
The invention belongs to technical field of welding materials, be specifically related to a kind of 0Cr13Ni5Mo steel metal flux-cored wire, the invention also discloses the preparation method of this flux-cored wire.
Background technology
The metallographic structure of martensitic stain less steel is martensite.The mass fraction 12%-27% of chromium in this kind of steel, the mass fraction of carbon reaches as high as 1.0%, improves intensity and the hardness of steel.The martensitic stain less steel generally applied at present can be divided into Cr13 type martensitic stain less steel and Low Carbon Martensite Stainless Steel.
Crl3 type martensitic stain less steel, use mainly as the stainless steel with general corrosion resistance, along with the continuous increase of carbon content, its intensity and hardness improve, and plasticity and toughness reduce, and as welding steel, carbon content is generally no more than 0.15%.Except there is certain decay resistance, also there is higher elevated temperature strength and high temperature oxidation resistance, extensive use in the high-temperature and pressure pipeline in power station equipment and aero-engine.
Low Carbon Martensite Stainless Steel is on Cr13 basis, while significantly reducing carbon content, Ni content is controlled the scope at 4%-6%, also add a class high strength martensitic steel of the alloying elements such as a small amount of Mo, Ti, except there is certain decay resistance, also there is good anti-cavitation, polishing machine, be therefore widely used in the hydraulic turbine and large pump.
0Cr13Ni5Mo is a kind of Low Carbon Martensite Stainless Steel, has good acid resistance and weldability.Be widely used in rotary wheel of water turbine, pump case, valve body, impeller, on power station pressure pipes.Develop the flux-cored wire that a kind of martensitic stain less steel 0Cr13Ni5Mo mates, the stainless use of 0Cr13Ni5Mo can be further developed, given play to its economic benefit.
Summary of the invention
The object of this invention is to provide a kind of 0Cr13Ni5Mo steel metal flux-cored wire, face of weld is bright and clean smooth, and postwelding, can continuous sequence without the need to cleaning, effectively improves welding production efficiency.
Another object of the present invention is to provide a kind of preparation method of 0Cr13Ni5Mo steel metal flux-cored wire.
The technical solution adopted in the present invention is, 0Cr13Ni5Mo 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: hafnium metal powfer 55%-60%, manganese powder 2.5%-6%, ferrosilicon 4%-10%, nickel powder 20%-25%, molybdenum powder 2.5%-5%, all the other are iron, and above constituent mass percentage sum is 100%.
Feature of the present invention is also:
Skin material is mild steel steel band, wherein impurity element (w%) P≤0.009%, S≤0.008%.
The filling rate (mass ratio) of this flux-cored wire Chinese medicine core is 25%-28%.
The diameter of this flux-cored wire is 1.2-2.0mm.
Another technical scheme of the present invention is, the preparation method of 0Cr13Ni5Mo steel metal flux-cored wire, and concrete steps are as follows:
Step 1, takes hafnium metal powfer 55%-60% by mass percentage respectively, manganese powder 2.5%-6%, ferrosilicon 4%-10%, nickel powder 20%-25%, molybdenum powder 2.5%-5%, 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 mild steel steel band is placed on flux-cored wire forming machine puts on band machine, by forming machine, mild steel 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%-28%, 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. 0Cr13Ni5Mo steel metal flux-cored wire of the present invention, can obtain martensitic stain less steel seam organization, welding point has excellent mechanical property and corrosion resisting property, achieves the welding of 0Cr13Ni5Mo martensitic stain less steel.
2. 0Cr13Ni5Mo steel metal flux-cored wire of the present invention, have good welding usability, spatter is few, and weld fumes is few, without slag inclusion problem in welding process.
3. 0Cr13Ni5Mo steel metal flux-cored wire of the present invention, face of weld is bright and clean smooth, and postwelding, can continuous sequence without the need to cleaning, effectively improves welding production efficiency; Be suitable for automatic welding device, there is higher production efficiency.
4. the preparation method of 0Cr13Ni5Mo steel metal 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.
0Cr13Ni5Mo steel metal flux-cored wire of the present invention, be made up of crust and medicine core, medicine core is metal-powder, composed of the following components by mass percentage: hafnium metal powfer 55%-60%, manganese powder 2.5%-6%, ferrosilicon 4%-10%, nickel powder 20%-25%, molybdenum powder 2.5%-5%, all the other are iron, and above constituent mass percentage sum is 100%.Skin material is mild steel steel band, wherein impurity element (w%) P≤0.009%, S≤0.008%.
The filling rate (mass ratio) of this flux-cored wire Chinese medicine core is 25%-28%.
The diameter of this flux-cored wire is 1.2-2.0mm.
The preparation method of above-mentioned 0Cr13Ni5Mo steel metal flux-cored wire, concrete steps are as follows:
Step 1, takes hafnium metal powfer 55%-60% by mass percentage respectively, manganese powder 2.5%-6%, ferrosilicon 4%-10%, nickel powder 20%-25%, molybdenum powder 2.5%-5%, 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 mild steel steel band is placed on flux-cored wire forming machine puts on band machine, by forming machine, mild steel 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%-28%, 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.
0Cr13Ni5Mo steel metal flux-cored wire of the present invention, is applicable to gas metal-arc welding (GMAW), and welding current is 180-220A, and voltage is 18-22V, and protective gas is CO
2, Ar, or Ar20%-CO
280% mist, gas flow rate is 15-20L/min.
The effect of each component in medicine core:
1. chromium, silicon, molybdenum is ferrite former, and form ferrite, manganese with the use of impelling in weld metal, nickel is austenite former, forms austenite with the use of impelling in weld metal.This two metalloids powder, through rational proportioning, can make weld seam be transformed into martensitic structure.
2. chromium can improve the corrosion resistance of weld seam, makes welding point meet stainless instructions for use.
3. silicon, manganese has certain deoxidation effect, can purify weld seam.In addition, silicon also has the effect of anti-temper softening, is that weld seam keeps certain intensity in follow-up heat treatment process.Manganese also has the effect improving weld seam quenching degree, is that weld seam is all transformed into martensite in the process of cooling.
4. nickel has crystal grain thinning, improves the effect of welding seam toughness.
5. iron is used for supplementary residuals weight, makes the total amount of medicinal powder reach 100%.
Embodiment 1
Step 1, takes hafnium metal powfer 55g respectively, manganese powder 3g, ferrosilicon 8g, nickel powder 22g, molybdenum powder 3g, iron 9g;
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 mild steel steel band is placed on flux-cored wire forming machine puts on band machine, by forming machine, mild steel 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 28%, 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.Welding point tensile strength is 810Mpa, and yield limit is 700Mpa, and the contraction percentage of area is 52%, and ballistic work is 130J.Performance meets the instructions for use of martensitic stain less steel 0Cr13Ni5Mo.
Embodiment 2
Step 1, takes respectively: hafnium metal powfer 57g, manganese powder 2.5g, ferrosilicon 4g, nickel powder 23g, molybdenum powder 2.5g, iron 11g;
Step 2, powder 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 mild steel steel band is placed on flux-cored wire forming machine puts on band machine, by forming machine, mild steel 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 27%, 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.Welding point tensile strength is 8210Mpa, and yield limit is 710Mpa, and the contraction percentage of area is 54%, and ballistic work is 125J.Performance meets the instructions for use of martensitic stain less steel 0Cr13Ni5Mo.
Embodiment 3
Step 1, takes hafnium metal powfer 60g respectively, manganese powder 4g, ferrosilicon 6g, nickel powder 20g, molybdenum powder 4g, iron 6g;
Step 2, powder step 1 taken mixes, and is then placed in drying oven and dries, and the temperature of oven dry is 250 DEG C, and the time is 2.5h, obtains medicine core powder;
Step 3, what mild steel steel band is placed on flux-cored wire forming machine puts on band machine, by forming machine, mild steel 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 1.6mm, 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 20V, and protective gas is CO
2, gas flow rate is 17L/min.Welding point tensile strength is 786Mpa, and yield limit is 688Mpa, and the contraction percentage of area is 61%, and ballistic work is 110J.Performance meets the instructions for use of martensitic stain less steel 0Cr13Ni5Mo.
Embodiment 4
Step 1, takes hafnium metal powfer 58g respectively, manganese powder 6g, ferrosilicon 5g, nickel powder 22g, molybdenum powder 2.5g, iron 6.5g;
Step 2, powder 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 2.3h, obtains medicine core powder;
Step 3, what mild steel steel band is placed on flux-cored wire forming machine puts on band machine, by forming machine, mild steel 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 26%, 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 4, adopt gas metal-arc welding (GMAW), welding current is 220A, and voltage is 20V, and protective gas is CO
2, gas flow rate is 20L/min.Welding point tensile strength is 781Mpa, and yield limit is 686Mpa, and the contraction percentage of area is 62%, and ballistic work is 127J.Performance meets the instructions for use of martensitic stain less steel 0Cr13Ni5Mo.
Embodiment 5
Step 1, takes hafnium metal powfer 56g respectively, manganese powder 4g, ferrosilicon 10g, nickel powder 21g, molybdenum powder 5g, iron 4g;
Step 2, powder 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 2.8h, obtains medicine core powder;
Step 3, what mild steel steel band is placed on flux-cored wire forming machine puts on band machine, by forming machine, mild steel 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 28%, 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 5, adopt gas metal-arc welding (GMAW), welding current is 180A, and voltage is 20V, and protective gas is argon gas, and gas flow rate is 17L/min.Welding point tensile strength is 806Mpa, and yield limit is 723Mpa, and the contraction percentage of area is 62%, and ballistic work is 135J.Performance meets the instructions for use of martensitic stain less steel 0Cr13Ni5Mo.
Claims (5)
1.0Cr13Ni5Mo 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: hafnium metal powfer 55%-60%, manganese powder 2.5%-6%, ferrosilicon 4%-10%, nickel powder 20%-25%, molybdenum powder 2.5%-5%, all the other are iron, and above constituent mass percentage sum is 100%.
2. 0Cr13Ni5Mo steel metal flux-cored wire according to claim 1, is characterized in that, skin material is mild steel steel band, wherein impurity element P≤0.009%, S≤0.008%.
3. 0Cr13Ni5Mo steel metal flux-cored wire according to claim 1, is characterized in that, the filling rate of this flux-cored wire Chinese medicine core is 25%-28%.
4. 0Cr13Ni5Mo 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.
The preparation method of 5.0Cr13Ni5Mo steel metal flux-cored wire, it is characterized in that, concrete steps are as follows:
Step 1, takes hafnium metal powfer 55%-60% by mass percentage respectively, manganese powder 2.5%-6%, ferrosilicon 4%-10%, nickel powder 20%-25%, molybdenum powder 2.5%-5%, 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 mild steel steel band is placed on flux-cored wire forming machine puts on band machine, by forming machine, mild steel 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%-28%, 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.
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Cited By (6)
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| CN105014261A (en) * | 2015-07-30 | 2015-11-04 | 武汉铁锚焊接材料股份有限公司 | Seamless metal powder core type flux-cored wire for chromium-molybdenum steel |
| CN105945446A (en) * | 2016-06-21 | 2016-09-21 | 西安理工大学 | Metal mold flux-cored wire for 1Cr12Ni2W1MoV stainless steel and preparation method of metal mold flux-cored wire |
| CN107350658A (en) * | 2017-07-12 | 2017-11-17 | 西安理工大学 | PH13 8Mo stainless steels metal mold welding wire and preparation method thereof |
| CN107649798A (en) * | 2017-10-20 | 2018-02-02 | 西安理工大学 | 25Cr2Ni4MoV steel metal flux-cored wire and preparation method |
| CN111185691A (en) * | 2018-11-15 | 2020-05-22 | 天津大学 | High-toughness low-phase-change-point metal powder-cored welding wire |
| CN114346512A (en) * | 2021-12-29 | 2022-04-15 | 西安理工大学 | Welding wire for alloy steel-stainless steel composite material transition layer and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105945446A (en) * | 2016-06-21 | 2016-09-21 | 西安理工大学 | Metal mold flux-cored wire for 1Cr12Ni2W1MoV stainless steel and preparation method of metal mold flux-cored wire |
| CN105945446B (en) * | 2016-06-21 | 2019-01-29 | 西安理工大学 | 1Cr12Ni2W1MoV stainless steel metal flux-cored wire and preparation method thereof |
| CN107350658A (en) * | 2017-07-12 | 2017-11-17 | 西安理工大学 | PH13 8Mo stainless steels metal mold welding wire and preparation method thereof |
| CN107649798A (en) * | 2017-10-20 | 2018-02-02 | 西安理工大学 | 25Cr2Ni4MoV steel metal flux-cored wire and preparation method |
| CN111185691A (en) * | 2018-11-15 | 2020-05-22 | 天津大学 | High-toughness low-phase-change-point metal powder-cored welding wire |
| CN114346512A (en) * | 2021-12-29 | 2022-04-15 | 西安理工大学 | Welding wire for alloy steel-stainless steel composite material transition layer and preparation method thereof |
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| CN104759788B (en) | 2018-04-10 |
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