CN103769770B - The hardfacing of a kind of vanadium titanium niobium complex intensifying is used without slag self-protection flux-cored wire - Google Patents
The hardfacing of a kind of vanadium titanium niobium complex intensifying is used without slag self-protection flux-cored wire Download PDFInfo
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- CN103769770B CN103769770B CN201410032232.5A CN201410032232A CN103769770B CN 103769770 B CN103769770 B CN 103769770B CN 201410032232 A CN201410032232 A CN 201410032232A CN 103769770 B CN103769770 B CN 103769770B
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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
- B23K35/02—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
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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
- B23K35/308—Fe as the principal constituent with Cr as next major constituent
- B23K35/3086—Fe as the principal constituent with Cr as next major constituent containing Ni or Mn
-
- 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
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
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Abstract
The invention discloses the hardfacing of a kind of vanadium titanium niobium complex intensifying without slag self-protection flux-cored wire, comprise mild-carbon steel strip and medicine core, flux cored filler is in steel band, and drug core component by mass percent is: the high carbon ferro-chrome of 55 ~ 65%; The vanadium iron of 2 ~ 6%; The ferrotianium of 2 ~ 6%; The ferro-niobium of 3 ~ 7%; The graphite of 3 ~ 5%; The ferro-boron of 2 ~ 3%; 8 ~ 14% deoxidiers, remaining is iron powder, deoxidier is the mixture of almag, manganese powder and ferrosilicon, mass ratio is almag: manganese powder: ferrosilicon=(1 ~ 4): (6 ~ 8): (1: 3), and quality meets: manganese powder wt% >=ferrosilicon wt%+ almag wt%, the ratio that medicine core accounts for welding wire gross weight is 50 ~ 57%.Welding wire provided by the invention, has with low cost, and hardness is high and even, the features such as wearability is good, and multilayer welding is without the need to scarfing cinder, and stomata sensitivity is minimum.
Description
Technical field
The invention belongs to the welding field in Materials Processing Engineering, relate to the hardfacing of a kind of vanadium titanium niobium complex intensifying particularly without slag self-protection flux-cored wire.
Background technology
Self-protection flux-cored wire has heap and applies that efficiency is fast, composition regulation is convenient, and without the need to additional assist gas or solder flux, automaticity advantages of higher is 21 century one of the most promising hardfacing materials.Self-protecting flux-cored wire for overlaying welding generally relies on medicine core component wear-resistant particle of Formed compound in Welding Metallurgy process, and these wear-resistant distribution of particles, in tough matrix, make deposited metal have excellent wearability.Therefore, the alloy quantity of institute's transition in deposited metal, fundamentally determines its anti-wear performance.Traditional self-protection flux-cored wire; in order to realize good self-shield effect; formed except the necessary alloying element of wear-resisting weld seam except adding; also to add slag former in medicine core; as rutile, fluorite, carbonate etc.; these slag formers form slag in welding process, thus avoid air to the invasion of metal drop.But due to slag former lighter weight, often occupy most space in medicine core.This is restricted with regard to making the addition of ferroalloy and metal dust, thus becomes the bottleneck that self-protection flux-cored wire anti-wear performance improves further.In recent years; appearance without slag self-protection flux-cored wire breaches this technical bottleneck, does not add any mineral dust, thus increase the loadings of alloyed powder to greatest extent in its medicine core; be conducive to increasing filling rate simultaneously, provide broad space and the internal potential of adjustment welding wire anti-wear performance.
The hardfacing flux-cored wire of current Bead weld repair, generally all contains the elements such as Mn, Si, C.Wherein contained Cr, is formed with C and Fe thick (Cr, Fe) in welding process
7c
3carbide, such welding wire crack resistance is poor.Simultaneously (Cr, Fe)
7c
3the growth position of carbide is to larger on wearability impact.This is because (Cr, Fe)
7c
3carbide is hexagonal prism structure, and its cross section microhardness is 1500-1700HV, and longitudinal section microhardness is 1100-1200HV.Researchers improve this present situation to a certain extent by adding carbide.As " vanadium-reinforced wear-resistant submerged-arc surfacing flux-cored welding wire " (201010197412.0) of Hohai University, wherein vanadium iron mass ratio 8 ~ 20%; " a kind of high-carbon high-chromium high-niobium cast iron self-protecting flux-cored wire " (200710175676.4) of China Metallurgical Group Construction Research Institute, wherein ferro-niobium mass ratio 10 ~ 30%; " titanium reinforced wear-resistance submerged overlaying flux-cored wire " (201010197427.7) of Hohai University, wherein ferrotianium mass ratio 10 ~ 25%.But, (V, Ti, Nb) C double carbide has higher heat endurance and hardness, if utilize open arc welding technology to separate out (V, Ti in weld deposit process, Nb) C double carbide, will improve hardfacing alloy structure stability and wearability undoubtedly further.In addition, the method using multiple elements design to add may ensure under the condition forming the once-combined carbide of MC type, by the interpolation overall control of carbide in lower level, thus reach cost-saving, control the object of welding wire manufacturing cost, will the manufacture again and the repair that are widely used in the main equipment wear parts such as the larger steel roll of consumable quantity, coal-grinding roller, roll squeezer, excavator be applicable to.Also do not have in current research by adding a small amount of polynary carbide to form the report of double carbide hard phases strengthening flux-cored wire.
Summary of the invention
Goal of the invention: for solving the technical problem existed in prior art, the invention provides the hardfacing of a kind of vanadium titanium niobium complex intensifying without slag self-protection flux-cored wire.
Technology contents: for realizing above-mentioned technical purpose, the present invention proposes the hardfacing of a kind of vanadium titanium niobium complex intensifying without slag self-protection flux-cored wire, comprise mild-carbon steel strip and medicine core, flux cored filler is in steel band, it is characterized in that, the high carbon ferro-chrome of described drug core component mass percentage scope following 55 ~ 65%; The vanadium iron of 2 ~ 6%; The ferrotianium of 2 ~ 6%; The ferro-niobium of 3 ~ 7%; The graphite of 3 ~ 5%; The ferro-boron of 2 ~ 3%; 8 ~ 14% deoxidiers, remaining is iron powder, deoxidier is the mixture of almag, manganese powder and ferrosilicon, mass ratio is almag: manganese powder: ferrosilicon=(1 ~ 4): (6 ~ 8): (1: 3), and quality meets: manganese powder % >=ferrosilicon %+ almag %, the ratio that medicine core accounts for welding wire gross weight is 50 ~ 57%.
Preferably, described high carbon ferro-chrome phosphorus content is 9 ~ 10wt%, and chrome content is 60 ~ 70wt%, and all the other are iron; Described vanadium iron vanadium content is 35 ~ 50wt%, and all the other are iron; Described ferrotianium titaniferous amount is 28 ~ 32wt%, and all the other are iron; Described ferro-niobium niobium content is 50 ~ 60wt%, and all the other are iron; Described ferro-boron boron content is 19 ~ 25wt%, and all the other are iron; In described deoxidier, almag aluminum content is 47 ~ 53wt%, and all the other are magnesium; In described deoxidier, ferrosilicon silicon content is 72 ~ 80wt%, and all the other are iron.
Preferably, the particle diameter of all components of described medicine core is more than or equal to 80 orders.
Preferably, described mild-carbon steel strip is H08A carbon steel steel band.
Wherein, the size (thickness × width) of described mild-carbon steel strip is: 0.3 × 16mm or 0.4 × 18mm or 0.5 × 21mm.
The diameter of described welding wire is any one in 2.40mm, 2.60mm, 2.85mm, 3.15mm, 3.45mm, 3.80mm and 4.10mm.
The hardfacing of above-mentioned vanadium titanium niobium complex intensifying, without the preparation method of slag self-protection flux-cored wire, is characterized in that, comprises the steps:
(1) utilize molding roller that mild steel steel band is rolled into U-shaped, then by dust feeder, medicine core material of the present invention is joined in U-lag by 50 ~ 57% of welding wire gross weight of the present invention;
(2) U-lag is healed up, medicine core is wrapped up wherein, by wire drawing die, by road drawing, tube reducing, finally makes its diameter reach 2.40 ~ 4.10mm, obtain final products.
In above-mentioned medicine core, each component Main Function is as follows:
High carbon ferro-chrome: its composition is: transition alloy elements Cr in deposited metal, and C element is provided.
Vanadium iron, ferrotianium and ferro-niobium: preferential combination with C forms the wear-resisting phase of (V, Ti, Nb) C composite ganoine.
Graphite: provide C element, partial oxidation forms CO and causes the micro-boiling in molten bath, reduces stomata sensitivity.
Ferro-boron: improve welding bead shaping surface.
Deoxidier is the mechanical impurity of almag, manganese powder and ferrosilicon 3 kinds.Good self-shield effect is reached by deoxidation.
Sketched can be understood by the effect of each component in technique scheme and medicine core, the present invention, owing to adding appropriate vanadium, titanium and niobium in medicine core simultaneously, forms a large amount of (V, Ti, Nb) C double carbides in Welding Metallurgy process, and Dispersed precipitate.Thus make to organize fined, increase deposited metal obdurability.Further, have than it (Cr, Fe) owing to first analysing (V, Ti, Nb) C double carbide
7c
3the hardness that carbide is higher and heat endurance, improve hardness and the wearability of deposited metal.Vanadium titanium niobium compound is added total amount and is greatly reduced, and just can reach the object significantly improving anti-wear performance, thus greatly save welding wire manufacturing cost, achieve original intention multielement enhanced on a small quantity, reach object of the present invention.
In technique scheme, described deoxidier be almag, manganese powder and ferrosilicon 3 kinds of alloys by (1 ~ 4): (6 ~ 8): the mechanical mixture of (1: 3).Because this welding wire does not add any mineral powder, can only mainly rely on alloying element de-oxygen molten drop or molten bath, need to add strong deoxidant element Al and Mg.But almag adds too much can worsen appearance of weld.The deoxidizing capacity of Si is better than Mn lower than Al, but add excessive meeting make welding bead surface formed pit.Mn has the double effects of deoxidation and gas making, and addition relatively should be many.Through repetition test, when finding that the deoxidier quality of preparation meets manganese powder % >=ferrosilicon %+ almag % simultaneously, the resultant effect of triple combination's deoxidation is ideal.
Beneficial effect: the present invention, by adding appropriate vanadium, titanium and niobium in medicine core simultaneously, forms (V, Ti, Nb) C double carbide of a large amount of Dispersed precipitate, and becomes (Cr, Fe) in Welding Metallurgy process
7c
3the heterogeneous forming core core of carbide, and reduce (Cr, Fe)
7c
3the size of carbide, makes to organize fined.Further, first analyse (V, Ti, Nb) C double carbide to have than it (Cr, Fe)
7c
3the hardness that carbide is higher and heat endurance, improve the wearability of deposited metal further.Flux-cored wire of the present invention is with low cost, and welding technological properties is good, and stomata sensitivity is minimum, and homogenization degree is high, and overlay surface hardness is even, and average hardness is in 56 ~ 65HRC scope.Wearability is 16 ~ 35 times of Q235.
Accompanying drawing explanation
Fig. 1 is (V, Ti, Nb) C double carbide form of the flux-cored wire that the embodiment of the present invention 1 obtains.
Fig. 2 is (V, Ti, Nb) C double carbide (as Fig. 1) energy spectrum analysis picture of the flux-cored wire that the embodiment of the present invention 1 obtains.
Detailed description of the invention
According to following embodiment, the present invention may be better understood.But concrete medicine core component proportioning, process conditions and result thereof described by embodiment only for illustration of the present invention, and should can not limit the present invention described in detail in claims yet.Wherein, the high carbon ferro-chrome phosphorus content used in following each embodiment is 9 ~ 10wt%, and chrome content is 60 ~ 70wt%, and all the other are iron; Vanadium iron vanadium content is 35 ~ 50wt%, and all the other are iron; Ferrotianium titaniferous amount is 28 ~ 32wt%, and all the other are iron; Ferro-niobium niobium content is 50 ~ 60wt%, and all the other are iron; Ferro-boron boron content is 19 ~ 25wt%, and all the other are iron; In deoxidier, almag aluminum content is 47 ~ 53wt%, and all the other are magnesium; In deoxidier, ferrosilicon silicon content is 72 ~ 80wt%, and all the other are iron.
Embodiment 1
The hardfacing of a kind of vanadium titanium niobium complex intensifying is used without slag self-protection flux-cored wire; comprise mild-carbon steel strip and medicine core; flux cored filler is in steel band; drug core component is prepared by following quality: the iron powder of the graphite of the ferrotianium of the high carbon ferro-chrome of 55g, the vanadium iron of 2g, 4g, the ferro-niobium of 7g, 3g, the ferro-boron of 2g, the deoxidier of 8g and 19g; 100g powder altogether, wherein deoxidier comprises the ferrosilicon of the almag of 1g, the manganese powder of 6g and 1g.The powder got is all by 80 object sieves.Inserted by got various powder in mixed powder machine, mix 40 minutes, then mixed-powder is added in the H08A carbon steel steel band groove of 16 × 0.3mm of U-shaped, filling rate is 54%.Again U-lag is healed up, medicinal powder is wrapped up wherein.Then make it be one or more in the wire drawing die of 4.10mm, 3.80mm, 3.45mm, 3.15mm, 2.85mm, 2.60mm, 2.40mm respectively by diameter, by road drawing, tube reducing, finally obtaining diameter is the product of 2.40 ~ 4.10mm.Welding current is 280 ~ 400A, and weldingvoltage is 28 ~ 36V, and speed of welding is 2.4m/min, and interlayer temperature controls at 150 ~ 250 DEG C, built-up welding 3 layers.Deposited metal hardness is that 56HRC and wearability are in table 1.
Embodiment 2
The hardfacing of a kind of vanadium titanium niobium complex intensifying is used without slag self-protection flux-cored wire; comprise mild-carbon steel strip and medicine core; flux cored filler is in steel band; drug core component is prepared by following quality: the iron powder of the graphite of the ferrotianium of the high carbon ferro-chrome of 58g, the vanadium iron of 5g, 2g, the ferro-niobium of 6g, 4g, the ferro-boron of 2.5g, the deoxidier of 14g and 8.5g; 100g powder altogether; wherein, deoxidier comprises the ferrosilicon of the almag of 4g, the manganese powder of 8g and 2g.The powder got is all by 80 object sieves.Inserted by got various powder in mixed powder machine, mix 40 minutes, then mixed-powder is added in the H08A carbon steel steel band groove of 16 × 0.3mm of U-shaped, filling rate is 50%.Again U-lag is healed up, medicinal powder is wrapped up wherein.Then make it be one or more in the wire drawing die of 4.10mm, 3.80mm, 3.45mm, 3.15mm, 2.85mm, 2.60mm, 2.40mm respectively by diameter, by road drawing, tube reducing, finally obtaining diameter is the product of 2.40 ~ 4.10mm.Welding current is 280 ~ 400A, and weldingvoltage is 28 ~ 36V, and speed of welding is 2.4m/min, and interlayer temperature controls at 150 ~ 250 DEG C, built-up welding 3 layers.Deposited metal hardness and wearability are in table 1.
Embodiment 3
The hardfacing of a kind of vanadium titanium niobium complex intensifying is used without slag self-protection flux-cored wire; comprise mild-carbon steel strip and medicine core; flux cored filler is in steel band; drug core component is prepared by following quality: the iron powder of the graphite of the ferrotianium of the high carbon ferro-chrome of 62g, the vanadium iron of 4g, 5g, the ferro-niobium of 4g, 4g, the ferro-boron of 2.5g, the deoxidier of 12g and 6.5g; 100g powder altogether; wherein, deoxidier comprises the ferrosilicon of the almag of 3g, the manganese powder of 6g and 3g.The powder got is all by 80 object sieves.Inserted by got various powder in mixed powder machine, mix 40 minutes, then mixed-powder is added in the H08A carbon steel steel band groove of 16 × 0.3mm of U-shaped, filling rate is 51%.Again U-lag is healed up, medicinal powder is wrapped up wherein.Then make it be one or more in the wire drawing die of 4.10mm, 3.80mm, 3.45mm, 3.15mm, 2.85mm, 2.60mm, 2.40mm respectively by diameter, by road drawing, tube reducing, finally obtaining diameter is the product of 2.40 ~ 4.10mm.Welding current is 280 ~ 400A, and weldingvoltage is 28 ~ 36V, and speed of welding is 2.4m/min, and interlayer temperature controls at 150 ~ 250 DEG C, built-up welding 3 layers.Deposited metal hardness and wearability are in table 1.
Embodiment 4
The hardfacing of a kind of vanadium titanium niobium complex intensifying is used without slag self-protection flux-cored wire; comprise mild-carbon steel strip and medicine core; flux cored filler is in steel band; drug core component is prepared by following quality: the iron powder of the graphite of the ferrotianium of the high carbon ferro-chrome of 65g, the vanadium iron of 6g, 6g, the ferro-niobium of 3g, 5g, the ferro-boron of 3g, the deoxidier of 10g and 2g; 100g powder altogether; wherein, deoxidier comprises the ferrosilicon of the almag of 2g, the manganese powder of 7g and 1g.The powder got is all by 80 object sieves.Inserted by got various powder in mixed powder machine, mix 40 minutes, then mixed-powder is added in the H08A carbon steel steel band groove of 16 × 0.3mm of U-shaped, filling rate is 52%.Again U-lag is healed up, medicinal powder is wrapped up wherein.Then make it be one or more in the wire drawing die of 4.10mm, 3.80mm, 3.45mm, 3.15mm, 2.85mm, 2.60mm, 2.40mm respectively by diameter, by road drawing, tube reducing, finally obtaining diameter is the product of 2.40 ~ 4.10mm.Welding current is 280 ~ 400A, and weldingvoltage is 28 ~ 36V, and speed of welding is 2.4m/min, and interlayer temperature controls at 150 ~ 250 DEG C, built-up welding 3 layers.Deposited metal hardness and wearability are in table 1.
Table 1 beat hardness and adopt HR-150A Rockwell apparatus, load 150Kg, gets 5 point hardnesses to each test specimens, calculates average hardness value.
Wear test adopts MLS-225 type wet type rubber wheel abrasion tester.
The overlay cladding of each embodiment is cut five and is of a size of 57 × 25 × 6mm Wear specimens.Wear test parameter is as follows: rubber wheel diameter: 178mm, rubber wheel rotating speed: 240 revs/min, rubber wheel hardness: 70 (Shao Er hardness), load: 10Kg, rubber wheel revolution: pre-grinding 1000 turns, formal test turns 1000 turns, abrasive material: 40 ~ 70 object quartz sands.The anti-wear performance of deposited metal is weighed with the weight loss formally worn and torn.Fill in the beaker of acetone soln forward and backward sample inserted of each experiment, clean 3 ~ 5 minutes in ultrasonic washing instrument, record of weighing after dry.Experiment Q235 steel sample as a comparison, the ratio of contrast piece weight loss and measuring piece weight loss is as the relative wear resistance ε of built-up welding sample.
Table 1 each embodiment deposited metal stomata sensitivity and wearability
Claims (7)
1. the hardfacing of vanadium titanium niobium complex intensifying is used without a slag self-protection flux-cored wire, and comprise mild-carbon steel strip and medicine core, flux cored filler, in steel band, is characterized in that, described drug core component mass percentage scope is as follows: the high carbon ferro-chrome of 55 ~ 65%; The vanadium iron of 2 ~ 6%; The ferrotianium of 2 ~ 6%; The ferro-niobium of 3 ~ 7%; The graphite of 3 ~ 5%; The ferro-boron of 2 ~ 3%; 8 ~ 14% deoxidiers, remaining is iron powder, deoxidier is the mixture of almag, manganese powder and ferrosilicon, mass ratio is almag: manganese powder: ferrosilicon=(1 ~ 4): (6 ~ 8): (1:3), and quality meets: manganese powder % >=ferrosilicon %+ almag %, the ratio that medicine core accounts for welding wire gross weight is 50 ~ 57%.
2. vanadium titanium niobium complex intensifying according to claim 1 hardfacing is without slag self-protection flux-cored wire, and it is characterized in that, described high carbon ferro-chrome phosphorus content is 9 ~ 10wt%, and chrome content is 60 ~ 70wt%, and all the other are iron; Described vanadium iron vanadium content is 35 ~ 50wt%, and all the other are iron; Described ferrotianium titaniferous amount is 28 ~ 32wt%, and all the other are iron; Described ferro-niobium niobium content is 50 ~ 60wt%, and all the other are iron; Described ferro-boron boron content is 19 ~ 25wt%, and all the other are iron; In described deoxidier, almag aluminum content is 47 ~ 53wt%, and all the other are magnesium; In described deoxidier, ferrosilicon silicon content is 72 ~ 80wt%, and all the other are iron.
3. vanadium titanium niobium complex intensifying according to claim 1 hardfacing is without slag self-protection flux-cored wire, and it is characterized in that, the particle diameter of all components of described medicine core is more than or equal to 80 orders.
4. vanadium titanium niobium complex intensifying according to claim 1 hardfacing is without slag self-protection flux-cored wire, it is characterized in that, described mild-carbon steel strip is H08A carbon steel steel band.
5. the vanadium titanium niobium complex intensifying hardfacing according to claim 1 or 4 is used without slag self-protection flux-cored wire, and it is characterized in that, the thickness × width of described mild-carbon steel strip is: 0.3 × 16mm or 0.4 × 18mm or 0.5 × 21mm.
6. vanadium titanium niobium complex intensifying according to claim 1 hardfacing is without slag self-protection flux-cored wire, it is characterized in that, the diameter of described welding wire is any one in 2.40mm, 2.60mm, 2.85mm, 3.15mm, 3.45mm, 3.80mm and 4.10mm.
7. vanadium titanium niobium complex intensifying according to claim 1 hardfacing is without the preparation method of slag self-protection flux-cored wire, it is characterized in that, comprises the steps:
(1) utilize molding roller that mild steel steel band is rolled into U-shaped, then by dust feeder, medicine core described in claim 1 is joined in U-lag by 50 ~ 57% of welding wire gross weight;
(2) U-lag is healed up, medicine core is wrapped up wherein, by wire drawing die, by road drawing, tube reducing, finally makes its diameter reach 2.40 ~ 4.10mm, obtain final products.
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| CN106141488B (en) * | 2016-07-28 | 2018-07-03 | 江苏科技大学 | A kind of self-protection flux-cored wire for adding more granularity drug core components and preparation method thereof |
| CN106238964B (en) * | 2016-07-28 | 2018-07-27 | 江苏科技大学 | A kind of titanium is modified high-chromium cast iron-type self protection pile-up welding flux core welding wire and preparation method thereof |
| CN106736041A (en) * | 2016-12-08 | 2017-05-31 | 河海大学常州校区 | A kind of self-protecting flux-cored wire for hardfacing |
| CN107363431B (en) * | 2017-08-28 | 2019-03-12 | 湘潭大学 | A kind of self-shield open arc built-up welding austenitic matrix flux-cored wire and its application method |
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| CN112643244B (en) * | 2020-11-30 | 2023-02-14 | 山东聚力焊接材料有限公司 | Self-protection flux-cored wire and preparation method thereof |
| CN112975205B (en) * | 2021-03-02 | 2022-12-23 | 唐山宝航机械制造有限公司 | Wear-resistant powder-cored welding wire for guide plate surfacing and preparation method thereof |
| CN112975206B (en) * | 2021-03-13 | 2022-06-07 | 江苏东南焊材有限公司 | Tough flux-cored wire and preparation method thereof |
| CN114535567B (en) * | 2021-12-14 | 2023-09-01 | 湘潭大学 | Composite powder particle of high-vanadium high-boron alloy for surfacing and application method thereof |
| CN116713637B (en) * | 2023-07-31 | 2023-11-03 | 燕山大学 | Flux-cored wire for build-up welding and material increase of fan-shaped section continuous casting roller, and preparation method and application thereof |
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|---|---|---|---|---|
| EP1716271B1 (en) * | 2004-02-16 | 2013-09-04 | Kevin Francis Dolman | Hardfacing ferroalloy materials |
| CN1304161C (en) * | 2004-12-23 | 2007-03-14 | 北京工业大学 | High-hardness, wearable, self-protecting metal cored surfacing welding wire |
| CN1775454A (en) * | 2005-12-09 | 2006-05-24 | 北京工业大学 | High anticrack, wear-resistance, high-cr cast iron cored solder wire for huild-up welding |
| CN101596653A (en) * | 2009-06-18 | 2009-12-09 | 山东大学 | A kind of cored welding strip applied in resurfacing welding and preparation method thereof |
| CN102513742A (en) * | 2011-12-28 | 2012-06-27 | 天津大桥金属焊丝有限公司 | Flux-cored wire for visible arc overlaying of high-chromium cast iron |
| CN102873474B (en) * | 2012-06-07 | 2014-06-18 | 南昌大学 | Little slag self-protection hard-surface flux-cored wire for build-up welding |
-
2014
- 2014-01-23 CN CN201410032232.5A patent/CN103769770B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN103769770A (en) | 2014-05-07 |
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