CN108994425A - A kind of compound (again) manufactures Continuous Casting Rolls self-protection flux-cored wire and technique - Google Patents
A kind of compound (again) manufactures Continuous Casting Rolls self-protection flux-cored wire and technique Download PDFInfo
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- CN108994425A CN108994425A CN201810780606.XA CN201810780606A CN108994425A CN 108994425 A CN108994425 A CN 108994425A CN 201810780606 A CN201810780606 A CN 201810780606A CN 108994425 A CN108994425 A CN 108994425A
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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
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
-
- 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
- B23K35/24—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
-
- 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
- B23K9/235—Preliminary treatment
Abstract
The invention discloses a kind of compound (again) manufacture Continuous Casting Rolls self-protection flux-cored wire and techniques.Flux-cored wire constituent by weight percentage are as follows: 20~60% chromic carbide irons；8~14% nickel；1~6% molybdenum；2~5%75 ferrosilicon；4~6% manganese；0.5~2% rare earth oxide；1~3% ferrotianium；1~5% almag；5~16% rutile；0.5~2% potassium feldspar；0.5~2% aluminium oxide+magnesia；1~5% fluorite；0.2~3% sodium fluoride；0~10% high nitrogen ferrochrome；0~8% high carbon ferro-chrome；0~1.2% graphite；0~25% chromium powder；0~3% vanadium iron+ferro-niobium；0~2% barium fluoride；0~3% prodan；0~3% lithium fluoride；0~1% lithium carbonate；Surplus is iron powder.For the present invention using high single-layer surfacing moulding process is welded greatly, processing performance is good, and efficiently and cost performance is high.
Description
Technical field
The present invention relates to a kind of compound (again) manufacture Continuous Casting Rolls self-protection flux-cored wire and techniques, belong to welding technique neck
Domain.
Background technique
Continuous casting installation for casting is generally used in the major steel mill in China, and Continuous Casting Rolls are the main consumption portions in continuous casting installation for casting
Part, Continuous Casting Rolls include crystallized region, fan-shaped section and horizontal segment three parts, and Continuous Casting Rolls are in the dual work of high temperature billet steel and cooling water
With working condition is very harsh, and under mechanical and Thermal Load, Continuous Casting Rolls are in use since roll surface will appear degree
Different pattern cracking, oxidation corrosion, abrasive damage etc. destroy, and influence conticaster operating rate, product yield and quality, unit is rolled
Roll consumption and stocking cost.
Built-up welding can be not only used for repairing Continuous Casting Rolls because of failure site caused by being on active service, and also can be used for strengthening the table of Continuous Casting Rolls
Face, purpose are all to extend the service life of Continuous Casting Rolls, save precious materials, reduce manufacturing cost.Currently, according to steel difficult to understand
The standards such as connection, Da Nieli, moral mark, build-up welding of continuous casting roller working lining is with a thickness of unilateral 2~6mm, therefore, the built-up welding mark generally used
Standard is " 1+2 " or " 1+3 ", i.e. additional two to the three layers of capping silk of one layer of bottoming silk.
The common welding procedure of Continuous Casting Rolls is mostly submerged-arc welding, open arc welding at present, but production efficiency is not high, currently, adopting
With only 5~6.5kg/h when monofilament arc welding, one layer of one-sided thickness of built-up welding is generally 2.0mm~2.5mm, it is therefore desirable to heap
The time of weldering is longer, and field practice shows that the built-up welding time is longer, and the built-up welding number of plies is more, is more easy to appear built-up welding defect.Especially
When multi-layer welding, upper one layer generates certain thickness heat affected area to next layer, and meeting Resistance of Weld Metal tissue causes unfavorable shadow
It rings, the serious Continuous Casting Rolls that damage use on the machine the service life.
Surfacing roll, especially Continuous Casting Rolls make one layer of energy of unilateral built-up welding thickness using the height for improving one-pass weld metal
Enough reach the layer height of current 2~5 layers (one layer of+two layers capping of bottoming or+three layers of capping of one layer of bottoming or other combinations),
And on the one hand the performances such as alloying component and hardness can satisfy the technique imagination of (Voestalpine, Da Nieli, moral mark) technical requirements
It is limited to welding procedure to be difficult to operate, easily occurs the defects of dropping down slag, overheating, be mingled in welding process, welding procedure is not easy reality
It applies；On the other hand stringenter to resurfacing welding material component requirements, because when build-up welding alloy material alloy content is excessively high, built-up welding thickness
It is also easy to produce amount of ferrite when excessively high, declines hardness；And build-up welding alloy material alloy content it is too low when, due to the original of dilution rate
Because causing alloy dilution excessive, ingredient (especially have base material 1.5mm at) deficiency；Two aspects cause mechanical property to be deteriorated.Cause
This, using the height for improving one-pass weld metal, making one layer of unilateral built-up welding thickness that can reach 2~5 layers of current built-up welding, (one layer is beaten
+ two layers capping of bottom or+three layers of capping of one layer of bottoming or two layers of capping and other combinations) layer height, and alloying component
And the performances such as hardness can satisfy the technique of (Voestalpine, Da Nieli, moral mark) technical requirements and have not been reported at present.
Summary of the invention
In view of the deficiencies of the prior art, the purpose of the present invention is to provide a kind of suitable compound (again) systems of single-layer surfacing molding
Make the self-protection flux-cored wire of roll.
It is compound using self-protection flux-cored wire single-layer surfacing molding that another object of the present invention is to provide a kind of
(again) technique of Continuous Casting Rolls is manufactured.
To achieve the goals above, the invention adopts the following technical scheme:
A kind of compound (again) manufacture Continuous Casting Rolls self-protection flux-cored wire, the flux-cored wire form by weight percentage at
It is divided into: 20~60% chromic carbide irons；8~14% nickel；1~6% molybdenum；2~5%75 ferrosilicon；4~6% manganese；0.5~2% rare earth
Oxide；1~3% ferrotianium；1~5% almag；5~16% rutile；0.5~2% potassium feldspar；0.5~
2% aluminium oxide+magnesia；1~5% fluorite；0.2~3% sodium fluoride；0~10% high nitrogen ferrochrome；0~30% chromium；0
~2% calcium-silicon；0~8% high carbon ferro-chrome；0~1.2% graphite；0~25% chromium powder；0~3% vanadium iron+ferro-niobium；0~
2% barium fluoride；0~3% prodan；0~3% lithium fluoride；0~1% lithium carbonate；Surplus is iron powder.
" compound (again) manufacture Continuous Casting Rolls " in the present invention refer to composite manufacturing and remanufacture Continuous Casting Rolls.Medicine of the invention
The rare earth oxide in core welding wire is cerium oxide.
Wherein, the content that the content of Cr is 63% or more, C in chromic carbide iron is 0.035% or less；The content of Si in ferrosilicon
It is 74% or more；The content of Ti is 20% or more in ferrotianium；In almag the content of A1 be 48% or more, active metal it is total
Content is 97% or more；The content that the content of N is 8~9%, Cr in high nitrogen ferrochrome is 60~70%；Cr's contains in high carbon ferro-chrome
The content that amount is 63% or more, C is 8% or more；The content of V is 50~70% in vanadium iron, in ferro-niobium the content of Nb be 60~
70%.
Self-protection flux-cored wire of the present invention, affiliated flux-cored wire mass percent are as follows:
Steel band: thickness of strips (mm) × width (mm) are as follows: 0.6 × 14,0.5 × 14 and associated band, weight ratio 30~
Between 40%；Gage of wire: 2.4~Φ of Φ 3.2mm.
The production of flux-cored wire belongs to industrial mature technology, and principle is: the purchase dedicated mild steel thin steel strip of flux-cored wire,
It is for example U-shaped etc. that thin steel strip rolled into semi-circular shape with special equipment, alloy powder is added to form core wire, rolling sealing forms
The very long very thin metal tube for being surrounded by core wire, then by rolling or cold drawing, forming diameter is Φ 2.4mm~Φ 3.2mm's
Flux-cored wire finished product.
Using the technique of compound (again) the manufacture roll of self-protection flux-cored wire single-layer surfacing molding, including following step
It is rapid:
(1) by drawing, by size before roll turning to built-up welding；
(2) detection of roll, the non-destructive testing including size, base material composition, performance and inside and outside defect are carried out before weldering；
(3) bead-welding technology is determined after carrying out bead-welding technology evaluation according to base material, resurfacing welding material and built-up welding mode, method, and
The technological parameter determined according to bead-welding technology；
(4) single-layer surfacing one-pass molding is carried out, i.e., the unilateral built-up welding thickness of roll can reach drawing rule after single-layer surfacing
Determine+1~2.5mm of built-up welding thickness；
(5) according to drawing requirement to the ingredient of postwelding different location, hardness and tissue detect, while to overlay cladding into
Row carrying out flaw detection.
Wherein, overlaying method can be used: filament submerged arc overlay welding, be suitble to monofilament, the methods of mariages and multiple-wire welding.
The built-up welding standard parameter of flux-cored wire
The weldering of one layer heap, unilateral built-up welding with a thickness of drawing requirement+1~2.5mm of size,
Arc voltage: 25.0~31.0V；
Welding current: 270~450A；
Wire feed rate: 2~4.5mm/min；
Revolving speed: 100~220mm/min；
Transverse moving speed: 0.20~0.35ipm；
Welding wire elongation: 22~28mm；
Swing width (design) is about 20~50mm, 8~30mm of amount of lap；
Swing speed: 2.0~4.0m/min；
Welding bead interlayer temperature: 100~200 DEG C.
The present invention has the advantages that
Using self-protection flux-cored wire and its bead-welding technology of the invention, single layer welded seam height height and its ingredient, group
It knits and hardness can satisfy the technical requirements of the nitrogenous silk of Voestalpine, while using self-shield built-up welding mode, processing performance is good, high
Effect and cost performance height.Specific advantage is as follows:
1, the characteristic and degree of oxidation of self-protection flux-cored wire of the invention according to each alloying element in welding, through for several times
Scientific experiment, final optimization pass go out composition range, and it is excessively high on the one hand to effectively prevent alloying component, cause one layer of welding bead working lining hard
Degree is insufficient, the trend of ferrite excessive (>=10%) in tissue；On the other hand it is too low to effectively prevent alloying component, causes tool female
The insufficient defect of alloy material ingredient at material 1.5mm.
2, self-protection flux-cored wire of the invention is according to the content of alloying component, by optimization of orthogonal test go out minerals,
The content of the components such as compound, thus ensure that formed in non gas shielded welding termination process it is excellent, the removability of slag can it is good, splash it is small, electricity
The defects of arc such as stablizes at the good processing performance, and welding bead interior tissue, hardness are uniform, no slag inclusion, stomata.
3, the welding of flux-cored wire single layer can be realized weld bead height height and ingredient, tissue and hardness meet the nitrogenous silk of Voestalpine
(TSC 4-TS No.03/94) components of working layer.
4, increase and weld high single-layer surfacing molding, reduce the built-up welding time, improve production efficiency.
5, self-shield built-up welding mode, processing performance is good, and one formable layer of built-up welding, reduces multi-layer welding upper layer to lower layer
Generation heat affected area and scarfing cinder in welding process difficulty.
6, increase and weld high single-layer surfacing molding, reduce the probability that all kinds of defects in weld deposit process generate, especially press from both sides
The defects of slag, stomata.
7, increase and weld the molding of high single-layer surfacing, one-sided thickness within 0~1mm since material dilution rate is larger, alloy at
Partial wave moves larger；But after built-up welding one-sided thickness is more than 1.5mm, resurfacing welding material alloying component and tissue change are little, therefore heap
Weldering one-sided thickness is more than to be conducive to the raising of seam organization and performance uniformity after 1.5mm, conducive to the service life of raising roll.
8, using arc stability when welding wire built-up welding of the invention, small, welding bead beautiful appearance of splashing takes off slag and is easy, pore-free,
Wellability is good.
9, using welding wire of the invention in the case where processing performance and satisfactory mechanical property, built-up welding one-sided thickness can reach
12mm。
Specific embodiment
Invention is further described in detail with reference to embodiments, but cited embodiment is not limited to this
Invention.
Using ordinary carbon steel band H08A in following embodiment, with a thickness of 0.5mm, width 14mm, filling rate 35%.
Embodiment 1
Drug core component are as follows: 560 grams of chromic carbide irons；128 grams of nickel；14 grams of molybdenums；30 gram of 75 ferrosilicon；46 grams of manganese；12 grams of cerium oxide；
17 grams of ferrotianiums；10 grams of almags；50 grams of rutile；18 grams of potassium feldspars；1 gram of aluminium oxide；4 grams of magnesia；46 grams of fluorites；10 grams
Sodium fluoride；6 grams of barium fluorides；30 grams of prodans；18 grams of calcium-silicon；Totally 1000 grams of powder.
Embodiment 2
Drug core component are as follows: 404 grams of chromic carbide irons；60 grams of chromium powders；120 grams of nickel；12 grams of molybdenums；46 gram of 75 ferrosilicon；50 grams of manganese；20
Gram cerium oxide；10 grams of ferrotianiums；14 grams of almags；90 grams of rutile；6 grams of potassium feldspars；8 grams of aluminium oxide；10 grams of magnesia；12 grams
Fluorite；20 grams of sodium fluorides；100 grams of high nitrogen ferrochromes；10 grams of prodans；6 grams of lithium fluoride；2 grams of lithium carbonates；Totally 1000 grams of powder.
Embodiment 3
Drug core component are as follows: 200 grams of chromic carbide irons；240 grams of chromium powders；112 grams of nickel；56 grams of molybdenums；26 gram of 75 ferrosilicon；44 grams of manganese；5
Gram cerium oxide；18 grams of ferrotianiums；10 grams of almags；85 grams of rutile；10 grams of potassium feldspars；10 grams of aluminium oxide；4 grams of magnesia；16
Gram fluorite；30 grams of sodium fluorides；80 grams of high carbon ferro-chromes；16 grams of vanadium iron；10 grams of ferro-niobiums；26 grams of lithium fluoride；2 grams of lithium carbonates.Totally 1000
Gram powder.
Embodiment 4
Drug core component are as follows: 251 grams of chromic carbide irons；200 grams of chromium powders；80 grams of nickel；34 grams of molybdenums；30 gram of 75 ferrosilicon；40 grams of manganese；10
Gram cerium oxide；26 grams of ferrotianiums；46 grams of almags；160 grams of rutile；5 grams of potassium feldspars；6 grams of aluminium oxide；2 grams of magnesia；10 grams
Fluorite；2 grams of sodium fluorides；40 grams of high carbon ferro-chromes；10 grams of graphite；12 grams of vanadium iron；8 grams of ferro-niobiums；18 grams of barium fluorides；10 grams of lithium carbonates.
Totally 1000 grams of powder.
Above-described embodiment is made to the welding wire that diameter is Φ 2.4mm, carries out build-up welding of continuous casting roller, technique are as follows:
With composite manufacturing by hard surfacing Φ 150mm continuous casting, for base material is 42CrMo, drawing provides that one-sided thickness is 4mm, alloy
Ingredient meets Voestalpine (TSC 4-TS No.03/94).
Using composite manufacturing by hard surfacing technique are as follows:
1.1 new roller stocks are worked into Φ 142mm, and do corresponding detection；
1.2 are utilized respectively the self-insurance flux-cored wire welding of Examples 1 to 4.
Before 1.3 weldings, roller stock is preheated into electric furnace, it is desirable that and 150 DEG C of preheating temperature, 100 DEG C/hr of pre-heating temperature elevation speed <.
1.4 built-up welding standard parameters require (reference):
The weldering of one layer heap, unilateral built-up welding are soldered to Φ 154mm with a thickness of 6mm, i.e. heap；
Arc voltage: 28.0V；
Welding current: 320A；
Wire feed rate: 4mm/min；
Revolving speed: 120mm/min；
Transverse moving speed: 0.25ipm；
Welding wire elongation: 22mm；
Tip tilt angle: 5 degree backward；
Swing width (design) is about 30mm, amount of lap 15mm；
Delay: the local multiple-time delay pressed about 0.6 second, the place in the road Bu Ya are delayed about 0.4 second less；
Swing speed: 3m/min；
Welding bead interlayer temperature: 150 DEG C.
1.5 postheating
Continuous Casting Rolls are after the completion of built-up welding, the cooled to room temperature in still air.
1.6 inspection after welding
After cooling, one-sided thickness is detected respectively between 5.5~6.5mm, is measured at base material 4mm and 2.5mm respectively
Ingredient and hardness, further measure 1.5mm place ingredient and hardness, the measurement position of alloy element component are as follows: detect position
(alloying component such as away from base material 4mm, sample position is between 4mm~4.5mm) is sampled in the range of~detection position+0.5mm,
C is sampled analysis using carbon and sulfur analytical instrument；N, the alloys such as Si, Mn, Cr, Ni, Mo, V, Nb measure its content using chemical method.
Using the hardness of HR-150A type Leeb Hardness Tester measurement different location.
Ingredient at different measurement positions is as shown in table 1.
1 weld seam different location alloying component mass percent (wt%) of table
Using magnetic powder and ultrasonic examination surface and internal equal zero defect, it is all satisfied drawing requirement.As seen from Table 1: implementing
Example 1,2 meets Voestalpine (TSC 4-TS No.03/94) standard；Embodiment 3,4 meets Voestalpine (TSC4-TS No.02/93)
Standard.As it can be seen that the Continuous Casting Rolls developed of the present invention with self-protection flux-cored wire can a layer heap be welded into type, and ingredient and hardness are full
The requirement of sufficient Voestalpine.
Claims (4)
1. a kind of compound (again) manufacture Continuous Casting Rolls self-protection flux-cored wire, which is characterized in that flux-cored wire percentage by weight
Than counting constituent are as follows: 20~60% chromic carbide irons；8~14% nickel；1~6% molybdenum；2~5%75 ferrosilicon；4~6% manganese；0.5
~2% rare earth oxide；1~3% ferrotianium；1~5% almag；5~16% rutile；0.5~2% potassium
Feldspar；0.5~2% aluminium oxide+magnesia；1~5% fluorite；0.2~3% sodium fluoride；0~10% high nitrogen ferrochrome；0
~8% high carbon ferro-chrome；0~1.2% graphite；0~25% chromium powder；0~3% vanadium iron+ferro-niobium；0~2% barium fluoride；0~
3% prodan；0~3% lithium fluoride；0~1% lithium carbonate；Surplus is iron powder.
2. compound (again) manufacture Continuous Casting Rolls self-protection flux-cored wire according to claim 1, which is characterized in that described dilute
Native oxide is cerium oxide.
3. a kind of work using compound (again) the manufacture roll of self-protection flux-cored wire single-layer surfacing described in claim 1 molding
Skill, which comprises the following steps:
(1) by drawing, by size before roll turning to built-up welding；
(2) detection of roll, the non-destructive testing including size, base material composition, performance and inside and outside defect are carried out before weldering；
(3) according to determining bead-welding technology after base material, resurfacing welding material and built-up welding mode, method progress bead-welding technology evaluation, and according to
The technological parameter that bead-welding technology determines；
(4) single-layer surfacing one-pass molding is carried out, i.e., the unilateral built-up welding thickness of roll can reach drawing regulation heap after single-layer surfacing
Weld thickness+1~2.5mm
(5) ingredient of postwelding different location, hardness and tissue are detected according to drawing requirement, while overlay cladding is visited
Triage is surveyed.
4. technique according to claim 3, which is characterized in that the overlaying method is filament submerged arc overlay welding, suitable monofilament,
Mariages or multiple-wire welding.
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| CN201810780606.XA CN108994425B (en) | 2018-07-16 | 2018-07-16 | Self-protection flux-cored wire for composite (re) manufacturing continuous casting roller and process |
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| CN201810780606.XA CN108994425B (en) | 2018-07-16 | 2018-07-16 | Self-protection flux-cored wire for composite (re) manufacturing continuous casting roller and process |
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| CN108994425B CN108994425B (en) | 2020-12-15 |
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Cited By (8)
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| CN110480205A (en) * | 2019-09-29 | 2019-11-22 | 鞍钢集团北京研究院有限公司 | Continuous casting machine crystallizer foot roll built-up welding open arc self-protection flux-cored wire and its preparation method |
| CN110539103A (en) * | 2019-09-29 | 2019-12-06 | 鞍钢集团北京研究院有限公司 | Open arc self-protection flux-cored wire for surfacing of continuous casting roller at horizontal section of continuous casting machine and manufacturing method thereof |
| CN110539102A (en) * | 2019-09-29 | 2019-12-06 | 鞍钢集团北京研究院有限公司 | Open arc self-protection flux-cored wire for surfacing of continuous casting roller at bending section of continuous casting machine and manufacturing method thereof |
| CN110539101A (en) * | 2019-09-29 | 2019-12-06 | 鞍钢集团北京研究院有限公司 | Open arc self-protection flux-cored wire for continuous casting roller surfacing of fan-shaped section of continuous casting machine and manufacturing method thereof |
| CN110883446A (en) * | 2019-12-17 | 2020-03-17 | 四川国鑫机械制造有限公司 | Flux-cored wire for roller repair and preparation method |
| CN111347192A (en) * | 2018-12-20 | 2020-06-30 | 天津大桥焊材集团有限公司 | Transition layer surfacing submerged arc flux-cored wire for repairing cold-rolled backing roll |
| CN112122820A (en) * | 2020-09-29 | 2020-12-25 | 天津市永昌焊丝有限公司 | Acidic high-strength high-toughness flux-cored wire |
| CN112122821A (en) * | 2020-09-29 | 2020-12-25 | 天津市永昌焊丝有限公司 | Wear-resistant and corrosion-resistant flux-cored wire for TIG-P surfacing of hydraulic support component |
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| CN111347192A (en) * | 2018-12-20 | 2020-06-30 | 天津大桥焊材集团有限公司 | Transition layer surfacing submerged arc flux-cored wire for repairing cold-rolled backing roll |
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| CN110539103A (en) * | 2019-09-29 | 2019-12-06 | 鞍钢集团北京研究院有限公司 | Open arc self-protection flux-cored wire for surfacing of continuous casting roller at horizontal section of continuous casting machine and manufacturing method thereof |
| CN110539102A (en) * | 2019-09-29 | 2019-12-06 | 鞍钢集团北京研究院有限公司 | Open arc self-protection flux-cored wire for surfacing of continuous casting roller at bending section of continuous casting machine and manufacturing method thereof |
| CN110539101A (en) * | 2019-09-29 | 2019-12-06 | 鞍钢集团北京研究院有限公司 | Open arc self-protection flux-cored wire for continuous casting roller surfacing of fan-shaped section of continuous casting machine and manufacturing method thereof |
| CN110883446A (en) * | 2019-12-17 | 2020-03-17 | 四川国鑫机械制造有限公司 | Flux-cored wire for roller repair and preparation method |
| CN112122820A (en) * | 2020-09-29 | 2020-12-25 | 天津市永昌焊丝有限公司 | Acidic high-strength high-toughness flux-cored wire |
| CN112122821A (en) * | 2020-09-29 | 2020-12-25 | 天津市永昌焊丝有限公司 | Wear-resistant and corrosion-resistant flux-cored wire for TIG-P surfacing of hydraulic support component |
| CN112122820B (en) * | 2020-09-29 | 2022-03-04 | 天津市永昌焊丝有限公司 | Acidic high-strength high-toughness flux-cored wire |
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