CN105081610A - Metal powder cored wire specially used for hot-working die repair - Google Patents
Metal powder cored wire specially used for hot-working die repair Download PDFInfo
- Publication number
- CN105081610A CN105081610A CN201510607230.9A CN201510607230A CN105081610A CN 105081610 A CN105081610 A CN 105081610A CN 201510607230 A CN201510607230 A CN 201510607230A CN 105081610 A CN105081610 A CN 105081610A
- Authority
- CN
- China
- Prior art keywords
- powder
- metal
- parts
- welding
- core solder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000843 powder Substances 0.000 title claims abstract description 180
- 239000002184 metal Substances 0.000 title claims abstract description 143
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 141
- 230000008439 repair process Effects 0.000 title abstract description 6
- 238000003466 welding Methods 0.000 claims abstract description 115
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 46
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 36
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000007789 gas Substances 0.000 claims abstract description 30
- 229910000604 Ferrochrome Inorganic materials 0.000 claims abstract description 26
- PNXOJQQRXBVKEX-UHFFFAOYSA-N iron vanadium Chemical compound [V].[Fe] PNXOJQQRXBVKEX-UHFFFAOYSA-N 0.000 claims abstract description 24
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 22
- XKRFYHLGVUSROY-UHFFFAOYSA-N argon Substances [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 19
- 239000010439 graphite Substances 0.000 claims abstract description 19
- CXOWYMLTGOFURZ-UHFFFAOYSA-N azanylidynechromium Chemical compound [Cr]#N CXOWYMLTGOFURZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052786 argon Inorganic materials 0.000 claims abstract description 10
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims abstract description 9
- 229910000679 solder Inorganic materials 0.000 claims description 55
- 239000000203 mixture Substances 0.000 claims description 33
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 30
- 229910000831 Steel Inorganic materials 0.000 claims description 30
- 239000005543 nano-size silicon particle Substances 0.000 claims description 30
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 30
- 239000010959 steel Substances 0.000 claims description 30
- MPPQGYCZBNURDG-UHFFFAOYSA-N 2-propionyl-6-dimethylaminonaphthalene Chemical compound C1=C(N(C)C)C=CC2=CC(C(=O)CC)=CC=C21 MPPQGYCZBNURDG-UHFFFAOYSA-N 0.000 claims description 24
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 24
- 239000010433 feldspar Substances 0.000 claims description 24
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 108010038629 Molybdoferredoxin Proteins 0.000 claims description 23
- HBELESVMOSDEOV-UHFFFAOYSA-N [Fe].[Mo] Chemical compound [Fe].[Mo] HBELESVMOSDEOV-UHFFFAOYSA-N 0.000 claims description 23
- 239000011572 manganese Substances 0.000 claims description 23
- 229910052748 manganese Inorganic materials 0.000 claims description 21
- 239000011651 chromium Substances 0.000 claims description 20
- 239000012535 impurity Substances 0.000 claims description 17
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 16
- 229910052710 silicon Inorganic materials 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 11
- 239000002994 raw material Substances 0.000 claims description 11
- 238000011049 filling Methods 0.000 claims description 10
- 229910052750 molybdenum Inorganic materials 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 229910052719 titanium Inorganic materials 0.000 claims description 6
- 239000010936 titanium Substances 0.000 claims description 6
- 229910052720 vanadium Inorganic materials 0.000 claims description 6
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 229910052717 sulfur Inorganic materials 0.000 claims description 5
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 abstract description 17
- 239000000956 alloy Substances 0.000 abstract description 17
- 150000004767 nitrides Chemical class 0.000 abstract description 15
- 230000002929 anti-fatigue Effects 0.000 abstract description 12
- 238000005336 cracking Methods 0.000 abstract description 9
- 230000003647 oxidation Effects 0.000 abstract description 7
- 238000007254 oxidation reaction Methods 0.000 abstract description 7
- 238000005728 strengthening Methods 0.000 abstract description 6
- 230000003749 cleanliness Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 abstract description 3
- 229910001309 Ferromolybdenum Inorganic materials 0.000 abstract 1
- 229910001200 Ferrotitanium Inorganic materials 0.000 abstract 1
- 229910000628 Ferrovanadium Inorganic materials 0.000 abstract 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract 1
- 238000005299 abrasion Methods 0.000 abstract 1
- DLHONNLASJQAHX-UHFFFAOYSA-N aluminum;potassium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Si+4].[Si+4].[Si+4].[K+] DLHONNLASJQAHX-UHFFFAOYSA-N 0.000 abstract 1
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 abstract 1
- 229910052708 sodium Inorganic materials 0.000 abstract 1
- 239000011734 sodium Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 28
- 239000011812 mixed powder Substances 0.000 description 20
- 238000004519 manufacturing process Methods 0.000 description 15
- 239000000463 material Substances 0.000 description 15
- 238000005275 alloying Methods 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 239000013078 crystal Substances 0.000 description 8
- 230000007704 transition Effects 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 7
- 239000003814 drug Substances 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 239000000047 product Substances 0.000 description 6
- 239000011324 bead Substances 0.000 description 5
- 238000005253 cladding Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 229910000734 martensite Inorganic materials 0.000 description 5
- 239000004482 other powder Substances 0.000 description 5
- 238000004506 ultrasonic cleaning Methods 0.000 description 5
- 238000005303 weighing Methods 0.000 description 5
- 238000005491 wire drawing Methods 0.000 description 5
- 229910001566 austenite Inorganic materials 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 238000005242 forging Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 229910001021 Ferroalloy Inorganic materials 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- 238000013475 authorization Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910052758 niobium Inorganic materials 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 229910052761 rare earth metal Inorganic materials 0.000 description 3
- 150000002910 rare earth metals Chemical class 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- -1 chrome nitride Chemical class 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000003487 electrochemical reaction Methods 0.000 description 2
- 238000006056 electrooxidation reaction Methods 0.000 description 2
- 229910001009 interstitial alloy Inorganic materials 0.000 description 2
- 229910001092 metal group alloy Inorganic materials 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 238000002161 passivation Methods 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000003019 stabilising effect Effects 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 229910000616 Ferromanganese Inorganic materials 0.000 description 1
- 208000025599 Heat Stress disease Diseases 0.000 description 1
- 229910003296 Ni-Mo Inorganic materials 0.000 description 1
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 229910000720 Silicomanganese Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- SJKRCWUQJZIWQB-UHFFFAOYSA-N azane;chromium Chemical compound N.[Cr] SJKRCWUQJZIWQB-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 238000005552 hardfacing Methods 0.000 description 1
- 238000001192 hot extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004372 laser cladding Methods 0.000 description 1
- 239000004579 marble Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention provides a metal powder cored wire specially used for hot-working die repair. The metal powder cored wire comprises a wire pipe wall and powder wrapped by the wire pipe wall. The powder is composed of, by mass, 4-8 parts of electrolytic manganese, 2-6 parts of 45# silicon iron, 1-4 parts of ferrotitanium, 20-35 parts of chromium metal, 20-30 parts of high-carbon ferro-chrome, 0-5 parts of graphite, 2-6 parts of ferrovanadium, 12-18 parts of ferromolybdenum, 2-4 parts of tungsten powder, 4-8 parts of nickel powder, 1-2 parts of nanometer chromium nitride powder, 2-6 parts of yttrium oxide powder, 1-2 parts of potassium feldspar and 1-4 parts of sodium fluosilicate. The nanometer chromium nitride powder is added, fine nitride interstitial phases are formed in deposited metal, and therefore the deposited metal has good toughness and anti-cracking capacity; yttrium oxide is added to the alloy powder, the deposited metal is purified, inclusions are nodulized, a nitride strengthening phase is promoted to be formed, and the anti-fatigue performance of the deposited metal is improved. A hot-working die is repaired through a gas metal arc welding technology in which the metal powder cored wire is combined with full-argon gas shielding. The obtained deposited metal has excellent high-temperature oxidation performance, abrasion resistance and cleanliness and good anti-fatigue performance.
Description
Technical field
The invention belongs to field of welding material, particularly relate to the metal powder core solder wire being exclusively used in hot-work die and repairing.
Background technology
In recent years, along with China's metallurgical industry and manufacturing fast development, mould is hot-work die particularly, and the consumption as Heat Working Rolls, hot-forging die, hot extruding die, hot blanking die etc. is increasing, has now become one of expendable part widely applied in industrial production.Mould in use peels off because wearing and tearing and the reason such as heat fatigue can produce, abrade, wearing and tearing etc. and losing efficacy.The service life of how to improve it is the study hotspot paid close attention to both at home and abroad always.The life-span of mould depends primarily on several aspects such as mold materials, structural design, Technology for Heating Processing, processing.China's die life only has external 1/2-1/3, there is the problem that precision is low, the process-cycle is long.In view of the inefficacy of mould is mostly by surface, from the saving energy and resource, give full play to material property potentiality and obtain property and maximum technical economic benefit, the performance of raising and improvement die-face material is the key extending die life.In production, the normal method of built-up welding that adopts prepares alloy-layer on die blank, obtains bimetallic mould, both reduces cost, and turn improved the performance of mould; Built-up welding is also the important technical that repairing mould extends its life-span.Built-up welding needs the welding material supporting with various die steel.
The welding material that built-up welding is commonly used has welding rod and welding wire.Welding rod adopts gas slag Combined Protection, and metallurgical quality is better, can by coating and core wire transition alloy elements, and weld seam impurity content is few, cleanliness factor is higher, and weld seam has higher anti-fatigue performance.Welding rod uses flexibly simultaneously, is also relatively applicable to the short weld seam of mould repair and irregular weld seam operating mode.Therefore, welding rod is usually used in the Bead weld repair of small mould, people have developed multiple hot-work die surfacing welding for this reason, the percentage by weight (wt%) being patent " hot forged mould Bead weld repair and again manufacture special welding rod " its chemical composition of coating of CN102240872A as publication No. is titanium dioxide 1-3, marble 25-40, fluorite 10-15, quartzy 3-5, chalk 2-4, high carbon ferro-chrome 8-12, high carbon ferromanganese 2-4, ferrosilicon 2-4, ferrotianium 6-9, molybdenum-iron 9-11, cerium oxide 4-8, metallic nickel 5-8, graphite 1-2; Core wire is H08A.This welding rod adopts Cr-Ni-Mo alloy system, the maximum level of electrode coating medium high carbon ferrochrome is 12%, the Cr content of deposited metal is far below 11%, be difficult to ensure that deposited metal has enough oxidation resistances below 800 DEG C and 800 DEG C, poor for high-temperature oxidation resistance during hot-work die built-up welding; The carbide former mainly Cr that this patent welding rod adds, the carbide of Cr is interstitial compound, the fusing point of interstitial compound and hardness are not so good as the height of gap phase, also decompose than being easier to during heating, nitride and some carbide (carbide as Ti, V, Nb) form gap phase, gap has the advantages such as high rigidity, high-melting-point, size be tiny mutually, but this welding rod does not adopt nitride strengthening; In addition, the alloying element that this welding rod plays Grain refinement only has Mo.Authorization Notice No. CN2507605Y " Mold Surfacing Electrode " utility model patent proposes a kind of flux-cored electrode tubular electrode for mould built-up welding, this welding rod makes conductive carrier with high-quality seamless steel pipe, pipe is outer scribbles coating, fills granular alloy medicine core in pipe, and end welding is provided with bare terminal end.This patent does not relate to the concrete formula of medicine core and coating.Though welding rod has above-mentioned advantage, welding rod is unsuitable for automatic welding, and built-up welding efficiency is lower, uses few in the built-up welding of large-scale hot-work die.Welding wire can be used for automatic welding, and welding efficiency is high, welding quality stable, and therefore, welding wire is the welding material that large mold built-up welding is commonly used.Welding wire is divided into solid welding wire and flux-cored wire, deposited metal of dies alloying element content is higher, the solid welding wire that alloying element content is high manufactures difficulty, so mould built-up welding mainstay core welding wire, especially the metal powder core solder wire mainly formed for medicinal powder with metal and ferroalloy powder is most widely used, the adjustment of metal powder core solder wire alloying component easily, manufacture easy, weld seam substantially without slag, multiple-bead deposit without the need to scarfing cinder, welding production efficiency is high, also can not produce dreg defect.In recent years, people compare attention to research and development mould built-up welding metal powder core solder wire, patent of invention " tungsten-pole argon arc-welding metal-powder-core weld wire for aged martensite steel and manufacture method thereof " as Authorization Notice No. CN1093450C discloses a kind of argon tungsten-arc welding metal powder core solder wire for mould built-up welding, in metal-powder-core, the weight proportion of each powder is: 39-78%Ni, 0-26%Co, 0-18%Mo, 0.2-6%Ti, 0.7-1.68%Al, 0.2-1.455%Nb, 0-0.72%Re, 0-0.15%Te, 0-0.25%Se, 0.02-0.04%B, 0.01-0.02%Zr, 0.01-0.1%Ca, the percentage by weight that medicine core accounts for welding wire is 30-52%.Authorization Notice No. is that CN103008924B patent of invention " a kind of flux-cored wire for forging mold built-up welding and application " discloses a kind of flux-cored wire for forging mold, welding wire adopts carbon steel steel band parcel medicine core powder, flux-cored wire filling rate is 30%-37%, medicine core powder comprises the material of following mass percentage: calcirm-fluoride 4%-7%, soda ash 0.5%-3%, quartz 0.5%-4%, rutile 2%-6%, high carbon ferro-chrome 13.6%-27.2%, pure chromium powder 13.9%-19.2%, nickel powder 2.2%-5.7%, electrolytic manganese 1.8%-4.3%, molybdenum-iron powder 6.3%-13.2%, ferrosilicon powder 2.1%-5.0%, vanadium iron powder 0.6%-1.9%, surplus is reduced iron powder.Application number is that the disclosed flux-cored wire of 201410748560.5 patents of invention " a kind of hot forged mould Gas Shielded welding flux-cored wire " adopts Cr-Ni-Mo-W-V-Co alloy system, adopts CO
2gas shielded arc welding, adds Co and improve oxidative resistance, red hardness, anti-wear performance, but cost significantly improves.
Deposited metal high-temperature oxidation resistance is excellent, wearability is good, cleanliness factor is high, have good fatigue resistance can deposited metal flux cored wire be Making mold and repair the welding material manufacturing urgent need again, the performance of such metal powder core solder wire of current China with also there is larger gap abroad.Research and development hot-work die built-up welding metal powder core solder wire is significant for the raising hot-work die life-span.
Summary of the invention
For the deficiencies in the prior art, the present invention provides a kind of deposited metal of dies flux cored wire of martensitic matrix by the optimal design that alloy powder is filled a prescription, by adding nano chromium nitride powder and yttrium oxide powder in iron(-)base powder, enable deposited metal meet the technical requirements such as hot-work die high-temperature oxidation resistance, high-wearing feature, high-cleanness, high, anti-fatigue performance simultaneously.
Although existing deposited metal is that the metal powder core solder wire of metal powder core solder wire with Ni-based in hardness, compactness, bond strength etc. of iron-based is about the same, the toughness of iron-based deposited metal, lower than Ni-based, is difficult to the requirement meeting high tenacity.The molten bath life period of the arc weldings such as argon-rich gas shielded gas metal-arc welding is short, adopts its metallurgical reaction of micron powder insufficient, is difficult to form abundant nitride, carbide hard phase.Therefore, improving its toughness and cracking resistance by adding nano chromium nitride powder in the present invention, the standard-required of hot-work die high tenacity and cracking resistance can be reached.Meanwhile, nanometer grade powder is active large, and metallurgical reaction is violent, makes up the drawback that arc welding molten bath life period is short, metallurgical reaction is insufficient, makes it be suitable for the arc welding methods such as argon-rich gas shielded gas metal-arc welding, submerged-arc welding.
Wherein, described " hot-work die " mainly refers to hammer forging die tool, hot heading mould, hot-extrusion mold, hot blanking die, finish forge mould or die casting etc.
Concrete technical scheme is as follows:
Be exclusively used in the metal powder core solder wire that hot-work die is repaired, comprise welding wire tube wall and be wrapped in the medicinal powder in it; It is characterized in that: described medicinal powder is made up of the raw material of following mass parts: electrolytic manganese 4-8,45# ferrosilicon 2-6, ferrotianium 1-4, crome metal 20-35, high carbon ferro-chrome 20-30, graphite 0-5, vanadium iron 2-6, molybdenum-iron 12-18, tungsten powder 2-4, nickel powder 4-8, nano silicon nitride chromium powder 1-2, yittrium oxide powder 2-6, potassic feldspar 1-2, prodan 1-4.
Deposited metal containing nano silicon nitride chromium powder has excellent high temperature hardness, anti-wear performance, and good toughness and cracking resistance, and therefore, nano silicon nitride chromium powder preferably uses as the basic material of the hardfacing alloy powder for the formation of hot-work die.
Wherein, when the content of nano silicon nitride chromium powder is lower than 1 mass parts, high temperature hardness, anti-wear performance, toughness and cracking resistance bad.On the other hand, if the content of nano silicon nitride chromium powder is higher than 2 mass parts, deposited metal easily produces gas hole defect, and cost also raises.The present invention confirms following result: if when the content of nano silicon nitride chromium powder is not less than 1 mass parts and is no more than 2 mass parts, can obtain the high temperature hardness of expectation, anti-wear performance, toughness and cracking resistance.
Yittrium oxide rare earth as except metal and ferroalloy, nanometer chrome nitride and inevitably except impurity more than point and the metal oxide that comprises, it plays purification deposited metal, nodularization field trash, impels formation nitride gap phase, improves the effect of the anti-fatigue performance of deposited metal.With regard to its content, although cannot treat different things as the same, when the content of yittrium oxide is lower than 2 mass parts, yittrium oxide may be caused to purify and anti-fatigue performance decreased effectiveness.On the other hand, when the content of yittrium oxide is higher than 6 mass parts, high temperature hardness and wear resistance decrease may be caused, therefore, in the application, the addition of yittrium oxide is limited to below 6 mass parts, therefore can not produce the problems referred to above.
Preferably, described medicinal powder is made up of the raw material of following mass parts: electrolytic manganese 6-8,45# ferrosilicon 3-6, ferrotianium 2-4, crome metal 25-35, high carbon ferro-chrome 24-30, graphite 2-5, vanadium iron 3-6, molybdenum-iron 14-18, tungsten powder 3-4, nickel powder 5-8, nano silicon nitride chromium powder 1.2-2, yittrium oxide powder 3-6, potassic feldspar 1.2-2, prodan 2-4.
Preferably, described medicinal powder is made up of the raw material of following mass parts: electrolytic manganese 6-7,45# ferrosilicon 3-5, ferrotianium 2-3, crome metal 25-30, high carbon ferro-chrome 24-28, graphite 2-3, vanadium iron 3-4, molybdenum-iron 14-16, tungsten powder 3-3.5, nickel powder 5-6, nano silicon nitride chromium powder 1.2-1.8, yittrium oxide powder 3-5, potassic feldspar 1.2-1.8, prodan 2-3.
The composition of described electrolytic manganese by quality ratio Mn content is not less than 99.5%; The composition of 45# ferrosilicon is 40.0%-47.0%Si, 0.1%C by quality ratio, and remaining is Fe and the impurity not affecting performance; The composition of ferrotianium is 23%-35%Ti, 8.5%Al, 5%Si, 2.5%Mn by quality ratio, and remaining is Fe and the impurity not affecting performance; The composition of crome metal by quality ratio Cr content is not less than 98%; Cr is not less than 60%, C is by quality ratio that 6% ~ 10%, Si is not more than 3%, S and is no more than 0.04%, P and is no more than 0.04% for the composition of high carbon ferro-chrome, and remaining is Fe and the impurity not affecting performance; The composition of graphite is 94% ~ 99%C by quality ratio; The composition of vanadium iron is 50%V, 0.2%C, 2%Si, 0.8%Al by quality ratio, and remaining is Fe and the impurity not affecting performance; The composition of molybdenum-iron is 50%Mo, 3%Si by quality ratio, and remaining is Fe and the impurity not affecting performance; The composition of tungsten powder by quality ratio W content is not less than 98%; The composition of nickel powder by quality ratio Ni content is not less than 98%.
With regard to above-mentioned alloy powder of the present invention, preferred described electrolytic manganese, 45# ferrosilicon, ferrotianium, crome metal, high carbon ferro-chrome, graphite, vanadium iron, molybdenum-iron, tungsten powder, nickel powder, yittrium oxide powder, potassic feldspar and prodan granularity are 75 microns ~ 180 microns (namely granularity is-80 order ~+200 orders).
In the present invention, adding of nano chromium nitride powder, tiny nitride gap phase can be formed in deposited metal, utilize nano chromium nitride powder crystal grain thinning (granularity of nano chromium nitride powder is less than 100 nanometers) simultaneously, improve the high temperature hardness of deposited metal, anti-wear performance, and make it have good toughness, cracking resistance and anti-fatigue performance, nanoscale chromium nitride powder activity is large, metallurgical reaction is violent, arc surfacing molten bath life period can be made up short, the drawback that metallurgical reaction is insufficient, be suitable for argon-rich gas shielded gas metal-arc welding, the arc surfacing techniques such as submerged-arc welding, on the other hand, in order to meet the requirement of deposited metal high-cleanness, high, anti-fatigue performance, by adding yittrium oxide rare earth in alloy powder, purifying deposited metal, nodularization field trash, impelling formation nitride strengthening phase, improving the anti-fatigue performance of deposited metal.Designed by rational alloy system, make deposited metal obtain martensitic matrix tissue and add a small amount of residual austenite soma, and using nitride, carbide as hardening constituent; Preferred by Metallurgical processing and raw material, reduce the impurity contents such as deposited metal S, P, and improve processing performance.
With regard to iron(-)base powder of the present invention, it at least comprises following alloying element: C, N, Si, Mn, Cr, Mo, V, Ti, Ni, W.When containing above-mentioned alloying element in iron(-)base powder, the deposited metal of preparation has certain high temperature hardness and corrosion resistance, can ensure that chromium nitride and yittrium oxide strengthen the maximization of effect.
The medicinal powder of metal powder core solder wire also can have the material powder of other metal powder than that described above or alloyed powder to form by collaboration.Now, of the present inventionly prerequisite to be characterized as not destroy.
In the present invention, metal powder core solder wire medicinal powder is that the powder such as chromium nitride, vanadium iron, ferrosilicon, ferrotianium are mixed, and in order to reduce welding material cost, reducing spatter, improve arc stability, improving appearance of weld, preferably adding a certain amount of arc stabilizer,
Wherein, potassic feldspar and prodan, as arc stabilizer, play stable arc, reduce the effect of splashing, and make deposited metal surface quality obtain the effect promoted further.Namely can be used alone also can be used in combination, when used as a mixture, make the content of potassic feldspar and prodan in described scope.When the total content of potassic feldspar and prodan is lower than 0.1 mass parts, its stable arc, the effect reducing the deposited metal surface forming that splashes, improves are not obvious.On the other hand, if when the total content of potassic feldspar and prodan is higher than 4 mass parts, the effect that stabilising arc, reduction splash also is improved no longer further, and relatively reduces the addition of alloying element.Confirm following result: during the scope making potassic feldspar and prodan content respectively more than 0.1 mass parts and below 2 mass parts, good stabilising arc can be obtained, reduce splashing, improve the shaping effect of deposited metal.Preferred use average grain diameter is the powder of 48 microns ~ 180 microns
Preferably, when alloy powder of the present invention, for the treatment of during hot die steel, (carbon mass fraction is generally less than 0.5%, the alloying element often added has: Cr, Mn, W, Mo, V, Si, Ni, Nb, Al etc.), in general, owing to the addition of Cr in cladding layer, Ni, the elements such as Mo, therefore galvanic cell can be formed between cladding layer and base material, thus generation electrochemical corrosion, but all with the addition of Cr due in hot-work die itself and cladding powder, elements such as Ni, Mo and make electrochemical reaction be difficult to Fast Persistence to carry out.First, Cr to be dissolved in the alloy in Ni thus to form Ni-Cr solid solution, and plays significant passivation; Secondly, in corrosion process, Cr part replaces the Fe in rusty scale alpha-feooh, defines oxyhydroxide α-(Fe1-xCrx) OOH.Because this rusty scale microstructure is comparatively fine and close and relatively stable, matrix material and corrosive medium well can be isolated, its high impedance simultaneously well can reduce again the speed of electrochemical reaction.And Mo can in steel crystal grain thinning, solution strengthening, formed cured layer, this cured layer is combined with matrix firmly, formation passivation, thus there is good protective value.Simultaneously because the interaction time of laser beam in laser cladding process and powder is short, therefore in cooling procedure rapidly, there is larger cooling degree, and the alloying element in powder can form multiple compounds, the quantity of further increase non-spontaneous forming core, greatly improve nucleation rate, finally make the fine microstructures of cladding layer fine and close.Fine and closely woven tissue not only reduces the impurity content on unit crystal boundary, and decreases the component segregation formed owing to cooling fast, thus reduces the impact of the accelerated corrosion because of galvanic effect.So, no matter be from corrosion weight loss amount, or according to having more scientific corrosion weight loss rate analysis, all illustrate that hot-work die comprises Cr, Ni, during Mo tri-kinds of elements, the sample of cladding layer has better corrosion resistance, and does not accelerate the corrosion of base material due to electrochemical corrosion and galvanic effect.Demonstrate powder of the present invention and there is the decay resistance consistent with base material, well meet the designing requirement that hot-work die reparation manufactures again.
The cross sectional shape of flux-cored wire is more complicated, more symmetrical, and electric arc is more stable, and metallurgical reaction and the protective effect of medicine core are more abundant.But along with the reduction of gage of wire, this difference reduces gradually.With regard to flux-cored wire of the present invention, when gage of wire is between 2.4 millimeters ~ 4.0 millimeters, during flux-cored wire cross sectional shape employing " O " type, arc stability is the highest, and the filling rate of flux-cored wire is also higher, can realize higher alloy transfer.
In above-mentioned hot-work die built-up welding metal powder core solder wire: tube wall preferred SPCC or the H08A mild steel steel band preparation of described flux-cored wire.
Preferred embodiment: the tube wall of described flux-cored wire selects wall thickness to be 0.3 ~ 0.5mm, width is the SPCC steel band preparation of 14 ~ 16mm; Its chemical composition is preferred by percentage to the quality: C is not more than 0.12%, Si is not more than 0.05%, Mn is not more than 0.5%, S is not more than 0.035%, P is not more than 0.035%, remaining be Fe and the impurity not affecting performance.
The filling rate of above-mentioned hot-work die built-up welding metal powder core solder wire be 30% ~ 55% (filling rate is the ratio of medicinal powder quality and medicinal powder, steel band quality sum).
In above-mentioned medicinal powder, the effect of each component is as follows:
The effect of electrolytic manganese is component controlling, and manganese metal impurity content is few, is beneficial to the purification of deposited metal.
The effect of 45# ferrosilicon is component controlling, combines add medicinal powder with electrolytic manganese, silicomanganese combined deoxidation effective.
The effect of ferrotianium is deoxidation, and carbide precipitate TiC and nitride TiN, crystal grain thinning, by thin brilliant and precipitated phase two kinds of mode strengthen welds, improves the hardness of deposited metal.
The effect of crome metal and high carbon ferro-chrome is that Resistance of Weld Metal plays solution strengthening effect to weld metal transition Cr, simultaneously carbide precipitate strengthen welds, and Cr content reaches the high-temperature oxidation resistance that more than 11% can also improve deposited metal.High carbon ferro-chrome except transition Cr, also to weld seam transition C.
The effect of graphite is to weld seam transition C, controls the suitable C content of weld seam and forms carbide, ensure the hardness of weld seam.
The effect of vanadium iron is alloying, forms carbide, nitride, crystal grain thinning.
The effect of molybdenum-iron is alloying, crystal grain thinning, solution strengthening, forms carbide, improves high-temperature behavior and the anti-wear performance of deposited metal.
The effect of tungsten powder is alloying, to weld seam transition W, improves high temperature hardness and the wear resistance at elevated temperature of weld metal.
The effect of nickel powder to improve stabilization of austenite, slow down austenite to martensitic transformation, increase remained austenite content, improve plasticity, the toughness of deposited metal, and martensite start temperature Ms point can be reduced, the residual stress of deposited metal can be reduced.
The effect of nano silicon nitride chromium powder is to weld seam transition N, forms nitride, crystal grain thinning with nitride forming element Ti, V, Cr etc., improves high temperature hardness and the structure stability of weld metal; To weld metal transition Cr.Nanometer powder is active large, and metallurgical reaction is abundant.
The effect of yittrium oxide reduces Welding seam inclusion content, makes inclusion balling, and purification weld metal, improves the anti-fatigue performance of weld metal; Reduce the surface tension of molten drop, impel the droplet transfer, reduce and splash.
The effect of potassic feldspar is stable arc, reduces and splashes, improve processing performance, and face of weld can be made to produce skim slag.
The effect of prodan is stable arc, reduces and splashes, and reduces viscosity coefficient of dross, improves processing performance.
The preparation method of hot-work die built-up welding metal powder core solder wire of the present invention comprises the following steps:
(1) join the proportioning weighing medicinal powder that powder is filled a prescription by medicinal powder, first graphite less for proportion, potassic feldspar, prodan are pressed after formula rate weighs and mixed, mix powder 8-10 minute with existing mixed powder machine, obtain non-alloyed mixed powder; Then join in non-alloyed mixed powder after the deoxidizing alloys such as electrolytic manganese, 45# ferrosilicon, ferrotianium, crome metal, high carbon ferro-chrome, vanadium iron, molybdenum-iron, tungsten powder, nickel powder, nano silicon nitride chromium powder, yittrium oxide powder being weighed by formula rate, continue mixed powder 8-10 minute again, obtain medicinal powder.
Wherein: the proportioning of described medicinal powder is as follows in mass parts: electrolytic manganese 4-8,45# ferrosilicon 2-6, ferrotianium 1-4, crome metal 20-35, high carbon ferro-chrome 20-30, graphite 0-5, vanadium iron 2-6, molybdenum-iron 12-18, tungsten powder 2-4, nickel powder 4-8, nano silicon nitride chromium powder 1-2, yittrium oxide powder 2-6, potassic feldspar 1-2, prodan 1-4.The granularity of nano silicon nitride chromium powder be more than 99% be less than 100 nanometers, the granularity of other powder is 75 microns ~ 180 microns (namely granularity is-80 order ~+200 orders);
(2) after 14 ~ 16 mm wides, 0.3 ~ 0.5 millimeters thick mild steel steel band being cleaned with ultrasonic cleaning apparatus, with existing flux-cored wire production equipment, above-mentioned steel band is rolled into U-shaped, in U-shaped grain, add the medicinal powder that step (1) is made again, filling rate (ratio of medicinal powder quality and metal powder core solder wire quality) is 30 ~ 55%;
(3) healed up by U-lag, medicinal powder is wrapped up wherein, the position that heals up adopts overlap joint connected mode (width of overlap is 1-2mm, is ensured by the format roll of existing flux-cored wire production equipment); Touched by wire drawing, by road drawing, tube reducing, finally make its diameter reach 2.4mm ~ 4.0mm.
(4) the metal powder core solder wire layer of step (3) gained is coiled into dish, obtains hot-work die built-up welding metal powder core solder wire finished product.
Wherein: the preferred SPCC steel band of above-mentioned steps (2) described mild steel steel band.
With regard to metal powder core solder wire of the present invention, when the gas flow that MAG welds gas is less than 18L/min, the deflection of protective gas is not enough, and weld seam easily produces the defects such as pore; When gas flow is greater than 23L/min, not only waste gas, and oxidisability strengthens, and face of weld can be formed the dimmed oxide skin of one deck, weldquality is declined, likely produce turbulent flow simultaneously and reduce protected effect.Therefore, in the present invention, preferred gas flow is 18L/min-23L/min.
Arc voltage and welding current are the main technologic parameters of MAG weldering, key parameter when arc voltage is short circuiting transfer, and arc voltage and welding current match, and can obtain splashing little, the stabilized welding process that appearance of weld is good.Preferred welding current 300A-450A in the present invention; Voltage 28V-42V.
Because short circuiting transfer all adopts thin welding wire, so the resistance heat that electrode extension produces is very large to welding influential effect.Extension elongation increases, and the resistance heat on welding wire increases, and wire melting is accelerated, and productivity ratio improves.But for the present invention, when extension elongation is greater than 28mm, easily there is the fusing of the overheated section of forming in welding wire, and splash serious, welding process is unstable.After stretching out increase, the distance between nozzle and weldment also increases simultaneously, causes gas shield deleterious.But when extension elongation is less than 14mm, the distance between nozzle and weldment is too short, the easy plug nozzle of splashing metal.Therefore, in the present invention, preferred electrode extension is 14mm-28mm.
Above-mentioned hot-work die built-up welding metal powder core solder wire adopts argon-rich gas shielded MAG to weld, welding current 300A-450A; Voltage 28V-42V; Gas flow 18L/min-23L/min; Electrode extension 14mm-28mm.The welding technological properties of welding wire is good, arc stability, splash little, crack resistance good.The hardness of deposited metal is HRC40-55.
The application of metal powder core solder wire of the present invention is not limited to gas shielded arc welding, also can be used for submerged-arc welding, electroslag welding etc.
The remarkable result that the present invention has is:
(1) this patent metal powder core solder wire has good processing performance, is suitable for automatic welding, and welding production efficiency is high, can be used for manufacture and the reparation of large-scale hot-work die.
(2) composition of deposited metal by changing the composition adjustment of metal powder core solder wire medicinal powder, can produce series of products for different hot die steels, applied range.
(3) this patent metal powder core solder wire optimizes deposited metal chrome content, makes deposited metal have good high-temperature oxidation resistance, significantly improves the service life of hot-work die.
(4) this patent metal powder core solder wire by adding nano silicon nitride chromium powder and nitride forming element in medicinal powder, by reaction fabricated in situ nitride, nitride has the advantages such as size is tiny, high-temperature stable mutually as gap, significantly improves high temperature hardness and the high-temperature stability of deposited metal.
(5) this patent is by steel band with medicinal powder is raw-material preferably (as selects simple metal, use ferroalloy less) and add rare earth, reduce deposited metal inclusion content, make inclusion balling, crystal grain thinning, improves the toughness of deposited metal, plasticity and anti-fatigue performance.
Detailed description of the invention
Embodiment 1:
(1) join the proportioning weighing medicinal powder that powder is filled a prescription by medicinal powder, first potassic feldspar less for proportion, prodan are pressed after formula rate weighs and mixed, mix powder 8 minutes with existing mixed powder machine, obtain non-alloyed mixed powder; Then join in non-alloyed mixed powder after the deoxidizing alloys such as electrolytic manganese, 45# ferrosilicon, ferrotianium, crome metal, high carbon ferro-chrome, vanadium iron, molybdenum-iron, tungsten powder, nickel powder, nano silicon nitride chromium powder, yittrium oxide powder being weighed by formula rate, continue mixed powder again 10 minutes, obtain medicinal powder.
Wherein: the proportioning of described medicinal powder is as follows in mass parts: electrolytic manganese 4,45# ferrosilicon 3, ferrotianium 2, crome metal 30, high carbon ferro-chrome 20, vanadium iron 2, molybdenum-iron 12, tungsten powder 2, nickel powder 4, nano silicon nitride chromium powder 1, yittrium oxide powder 2, potassic feldspar 2, prodan 2.The granularity of nano silicon nitride chromium powder be more than 99% be less than 100 nanometers, the granularity of other powder is 75 microns ~ 180 microns (namely granularity is-80 order ~+200 orders);
(2) after the cleaning of 14mm is wide, 0.3mm thick SPCC steel band ultrasonic cleaning apparatus, with existing flux-cored wire production equipment, above-mentioned steel band is rolled into U-shaped, in U-shaped grain, add the medicinal powder that step (1) is made again, filling rate (ratio of medicinal powder quality and metal powder core solder wire quality) is 30%;
(3) healed up by U-lag, medicinal powder is wrapped up wherein, the position that heals up adopts overlap joint connected mode; Touched by wire drawing, by road drawing, tube reducing, finally make its diameter reach 2.4mm.
(4) the metal powder core solder wire layer of step (3) gained is coiled into dish, obtains hot-work die built-up welding metal powder core solder wire finished product.
Above-mentioned hot-work die built-up welding metal powder core solder wire adopts argon-rich gas Ar+1%CO
2the gas metal-arc welding of protection, welding current 290A-310A; Voltage 28V-31V; Gas flow 18L/min; Electrode extension 14mm.The welding technological properties of welding wire is good, arc stability, splash little, crack resistance good.The hardness of deposited metal is HRC40.
Embodiment 2:
(1) join the proportioning weighing medicinal powder that powder is filled a prescription by medicinal powder, first graphite less for proportion, potassic feldspar, prodan are pressed after formula rate weighs and mixed, mix powder 10 minutes with existing mixed powder machine, obtain non-alloyed mixed powder; Then join in non-alloyed mixed powder after the deoxidizing alloys such as electrolytic manganese, 45# ferrosilicon, ferrotianium, crome metal, high carbon ferro-chrome, vanadium iron, molybdenum-iron, tungsten powder, nickel powder, nano silicon nitride chromium powder, yittrium oxide powder being weighed by formula rate, continue mixed powder again 8 minutes, obtain medicinal powder.
Wherein: the proportioning of described medicinal powder is as follows in mass parts: electrolytic manganese 8,45# ferrosilicon 6, ferrotianium 4, crome metal 35, high carbon ferro-chrome 30, graphite 3, vanadium iron 6, molybdenum-iron 18, tungsten powder 4, nickel powder 5, nano silicon nitride chromium powder 2, yittrium oxide powder 6, potassic feldspar 1, prodan 4.The granularity of nano silicon nitride chromium powder be more than 99% be less than 100 nanometers, the granularity of other powder is 75 microns ~ 180 microns (namely granularity is-80 order ~+200 orders);
(2) after the cleaning of 16mm is wide, 0.35mm thick SPCC steel band ultrasonic cleaning apparatus, with existing flux-cored wire production equipment, above-mentioned steel band is rolled into U-shaped, in U-shaped grain, add the medicinal powder that step (1) is made again, filling rate (ratio of medicinal powder quality and metal powder core solder wire quality) is 55%;
(3) healed up by U-lag, medicinal powder is wrapped up wherein, the position that heals up adopts overlap joint connected mode; Touched by wire drawing, by road drawing, tube reducing, finally make its diameter reach 4.0mm.
(4) the metal powder core solder wire layer of step (3) gained is coiled into dish, obtains hot-work die built-up welding metal powder core solder wire finished product.
Above-mentioned hot-work die built-up welding metal powder core solder wire adopts submerged arc bead welding, selects solder flux 260, welding current 420A-450A; Voltage 40V-44V.The welding technological properties of welding wire is good, and arc stability, appearance of weld are attractive in appearance, crack resistance good.The hardness of deposited metal is HRC55.
Embodiment 3:
(1) join the proportioning weighing medicinal powder that powder is filled a prescription by medicinal powder, first graphite less for proportion, potassic feldspar, prodan are pressed after formula rate weighs and mixed, mix powder 9 minutes with existing mixed powder machine, obtain non-alloyed mixed powder; Then join in non-alloyed mixed powder after the deoxidizing alloys such as electrolytic manganese, 45# ferrosilicon, ferrotianium, crome metal, high carbon ferro-chrome, vanadium iron, molybdenum-iron, tungsten powder, nickel powder, nano silicon nitride chromium powder, yittrium oxide powder being weighed by formula rate, continue mixed powder again 9 minutes, obtain medicinal powder.
Wherein: the proportioning of described medicinal powder is as follows in mass parts: electrolytic manganese 6,45# ferrosilicon 4, ferrotianium 3, crome metal 30, high carbon ferro-chrome 25, graphite 3, vanadium iron 4, molybdenum-iron 15, tungsten powder 3, nickel powder 6, nano silicon nitride chromium powder 1, yittrium oxide powder 4, potassic feldspar 2, prodan 1.The granularity of nano silicon nitride chromium powder be more than 99% be less than 100 nanometers, the granularity of other powder is 75 microns ~ 180 microns (namely granularity is-80 order ~+200 orders);
(2) after the cleaning of 16mm is wide, 0.5mm thick SPCC steel band ultrasonic cleaning apparatus, with existing flux-cored wire production equipment, above-mentioned steel band is rolled into U-shaped, in U-shaped grain, add the medicinal powder that step (1) is made again, filling rate (ratio of medicinal powder quality and metal powder core solder wire quality) is 40%;
(3) healed up by U-lag, medicinal powder is wrapped up wherein, the position that heals up adopts overlap joint connected mode; Touched by wire drawing, by road drawing, tube reducing, finally make its diameter reach 3.2mm.
(4) the metal powder core solder wire layer of step (3) gained is coiled into dish, obtains hot-work die built-up welding metal powder core solder wire finished product.
Above-mentioned hot-work die built-up welding metal powder core solder wire adopts submerged arc bead welding, selects solder flux 260, welding current 390A-410A, voltage 38V-40V.The welding technological properties of welding wire is good, and arc stability, appearance of weld are attractive in appearance, crack resistance good.The hardness of deposited metal is HRC48.
Embodiment 4:
(1) join the proportioning weighing medicinal powder that powder is filled a prescription by medicinal powder, first graphite less for proportion, potassic feldspar, prodan are pressed after formula rate weighs and mixed, mix powder 8 minutes with existing mixed powder machine, obtain non-alloyed mixed powder; Then join in non-alloyed mixed powder after the deoxidizing alloys such as electrolytic manganese, 45# ferrosilicon, ferrotianium, crome metal, high carbon ferro-chrome, vanadium iron, molybdenum-iron, tungsten powder, nickel powder, nano silicon nitride chromium powder, yittrium oxide powder being weighed by formula rate, continue mixed powder again 8 minutes, obtain medicinal powder.
Wherein: the proportioning of described medicinal powder is as follows in mass parts: electrolytic manganese 4,45# ferrosilicon 6, ferrotianium 4, crome metal 35, high carbon ferro-chrome 30, graphite 5, vanadium iron 6, molybdenum-iron 12, tungsten powder 4, nickel powder 8, nano silicon nitride chromium powder 2, yittrium oxide powder 6, potassic feldspar 2, prodan 4.The granularity of nano silicon nitride chromium powder be more than 99% be less than 100 nanometers, the granularity of other powder is 75 microns ~ 180 microns (namely granularity is-80 order ~+200 orders);
(2) after the cleaning of 16mm is wide, 0.3mm thick SPCC steel band ultrasonic cleaning apparatus, with existing flux-cored wire production equipment, above-mentioned steel band is rolled into U-shaped, in U-shaped grain, add the medicinal powder that step (1) is made again, filling rate (ratio of medicinal powder quality and metal powder core solder wire quality) is 45%;
(3) healed up by U-lag, medicinal powder is wrapped up wherein, the position that heals up adopts overlap joint connected mode; Touched by wire drawing, by road drawing, tube reducing, finally make its diameter reach 3.2mm.
(4) the metal powder core solder wire layer of step (3) gained is coiled into dish, obtains hot-work die built-up welding metal powder core solder wire finished product.
Above-mentioned hot-work die built-up welding metal powder core solder wire adopts argon-rich gas Ar+1.5%CO
2the gas metal-arc welding of protection, welding current 350A-380A; Voltage 35V-38V; Gas flow 20L/min; Electrode extension 20mm.The welding technological properties of welding wire is good, arc stability, splash little, crack resistance good.The hardness of deposited metal is HRC50.
Comparative example 1
This comparative example is with the difference of embodiment 1, oxygen-freeization yttrium in composition of raw materials, the thermal fatigue of deposited metal is tested, specimen size is 50 × 20 × 1.5 (mm), at 20mm central vertical thickness direction on one side, open 60 ° of v-notch, carry out the circulating-heating of 700 DEG C-20 DEG C, cooling, with the cycle-index reflection fatigue behaviour occurring 0.5mm crackle.The cycle-index of the comparative example 1 of oxygen-freeization yttrium powder is 21 times, and the cycle-index containing the embodiment 1 of yittrium oxide 2 parts (quality) is 43 times.By the comparison with embodiment 1, show that yittrium oxide of the present invention effectively can promote the anti-fatigue performance of deposited metal.
Comparative example 2
This comparative example is with the difference of embodiment 1, and do not add nano silicon nitride chromium powder in composition of raw materials, test the carrying out of toughness and cracking resistance, not the comparative example 2 of plus nano nitrogenize chromium powder, the test value of U-shaped notch impact toughness is 1.06J/cm
2, being the 5CrNiMo mould steel surface overlaying of 80mm at thickness, there is not crackle in preheating 250 DEG C of ability; The test value of the U-shaped notch impact toughness of embodiment 1 is 1.21J/cm
2, being the 5CrNiMo mould steel surface overlaying of 80mm at thickness, can not there is crackle in preheating 50 DEG C.Show that the nano silicon nitride chromium powder in medicine core of the present invention can improve toughness and the cracking resistance of deposited metal effectively.
Comparative example 3
This comparative example is with the difference of embodiment 1, granularity is adopted to be the nitrogenize chromium powder of 75 microns ~ 180 microns (namely granularity is-80 order ~+200 orders) in composition of raw materials, the hardness of surveying 500 DEG C is HRC36, the maxima and minima difference HRC6 of hardness; 500 DEG C of hardness of embodiment 1 are HRC41, the maxima and minima difference HRC4 of hardness.Nanometer chrome nitride keeps higher hardness under making deposited metal high temperature, and the hardness of deposited metal is more even.Micron-sized chromium nitride due to particle comparatively large, activity is less, because welding pool cooling velocity is fast under existing addition, causes metallurgical reaction insufficient, effectively cannot improve high temperature hardness and the structure stability of deposited metal.
Although above-mentioned, the specific embodiment of the present invention is described; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (10)
1. be exclusively used in the metal powder core solder wire that hot-work die is repaired, it is characterized in that, comprise welding wire tube wall and bag medicinal powder in the inner; Described medicinal powder is made up of the raw material of following mass parts: electrolytic manganese 4-8,45# ferrosilicon 2-6, ferrotianium 1-4, crome metal 20-35, high carbon ferro-chrome 20-30, graphite 0-5, vanadium iron 2-6, molybdenum-iron 12-18, tungsten powder 2-4, nickel powder 4-8, nano silicon nitride chromium powder 1-2, yittrium oxide powder 2-6, potassic feldspar 1-2, prodan 1-4.
2. metal powder core solder wire as claimed in claim 1, it is characterized in that, described medicinal powder is made up of the raw material of following mass parts: electrolytic manganese 6-8,45# ferrosilicon 3-6, ferrotianium 2-4, crome metal 25-35, high carbon ferro-chrome 24-30, graphite 2-5, vanadium iron 3-6, molybdenum-iron 14-18, tungsten powder 3-4, nickel powder 5-8, nano silicon nitride chromium powder 1.2-2, yittrium oxide powder 3-6, potassic feldspar 1.2-2, prodan 2-4.
3. metal powder core solder wire as claimed in claim 1 or 2, it is characterized in that, described medicinal powder is made up of the raw material of following mass parts: electrolytic manganese 6-7,45# ferrosilicon 3-5, ferrotianium 2-3, crome metal 25-30, high carbon ferro-chrome 24-28, graphite 2-3, vanadium iron 3-4, molybdenum-iron 14-16, tungsten powder 3-3.5, nickel powder 5-6, nano silicon nitride chromium powder 1.2-1.8, yittrium oxide powder 3-5, potassic feldspar 1.2-1.8, prodan 2-3.
4. metal powder core solder wire as claimed in claim 1 or 2, is characterized in that, the composition of described electrolytic manganese by quality ratio Mn content is not less than 99.5%; The composition of 45# ferrosilicon is 40.0% ~ 47.0%Si, 0.1%C by quality ratio, and remaining is Fe and the impurity not affecting performance; The composition of ferrotianium is 23% ~ 35%Ti, 8.5%Al, 5%Si, 2.5%Mn by quality ratio, and remaining is Fe and the impurity not affecting performance; The composition of crome metal by quality ratio Cr content is not less than 98%; Cr is not less than 60%, C is by quality ratio that 6% ~ 10%, Si is not more than 3%, S and is no more than 0.04%, P and is no more than 0.04% for the composition of high carbon ferro-chrome, and remaining is Fe and the impurity not affecting performance; The composition of vanadium iron is 50%V, 0.2%C, 2%Si, 0.8%Al by quality ratio, and remaining is Fe and the impurity not affecting performance; The composition of molybdenum-iron is 50%Mo, 3%Si by quality ratio, and remaining is Fe and the impurity not affecting performance; The composition of tungsten powder by quality ratio W content is not less than 98%; The composition of nickel powder by quality ratio Ni content is not less than 98%.
5. metal powder core solder wire as claimed in claim 1 or 2, it is characterized in that, the granularity of described nano chromium nitride powder is less than 100 nanometers; The granularity of described electrolytic manganese, 45# ferrosilicon, ferrotianium, crome metal, high carbon ferro-chrome, vanadium iron, molybdenum-iron, tungsten powder, nickel powder, yittrium oxide powder, potassic feldspar and prodan is 75 microns ~ 180 microns.
6. metal powder core solder wire as claimed in claim 1, is characterized in that, described welding wire tube wall adopts the preparation of SPCC or H08A mild steel steel band.
7. metal powder core solder wire as claimed in claim 1, is characterized in that, described welding wire tube wall adopts wall thickness to be 0.3 ~ 0.5mm, and width is the SPCC steel band preparation of 14 ~ 16mm; Described SPCC steel band chemical composition is by percentage to the quality: C is not more than 0.12%, Si is not more than 0.05%, Mn is not more than 0.5%, S is not more than 0.035%, P is not more than 0.035%, remaining be Fe and the impurity not affecting performance.
8. metal powder core solder wire as claimed in claim 1, it is characterized in that, the filling rate of described metal powder core solder wire is 30% ~ 55%.
9. the argon-rich gas shielded consumable electrode gas protection welding method of the arbitrary described metal powder core solder wire of claim 1-8, it is characterized in that, technological parameter is as follows: welding current 300A-450A; Voltage 28V-42V; Gas flow 18L/min-23L/min; Electrode extension 14mm-28mm.
10. the application of the arbitrary described metal powder core solder wire of claim 1-8 in process hot die steel, is characterized in that, containing Cr, Ni, Mo in described hot die steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510607230.9A CN105081610B (en) | 2015-09-22 | 2015-09-22 | It is exclusively used in the metal powder core solder wire of hot-work die reparation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510607230.9A CN105081610B (en) | 2015-09-22 | 2015-09-22 | It is exclusively used in the metal powder core solder wire of hot-work die reparation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105081610A true CN105081610A (en) | 2015-11-25 |
| CN105081610B CN105081610B (en) | 2017-03-08 |
Family
ID=54563418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510607230.9A Expired - Fee Related CN105081610B (en) | 2015-09-22 | 2015-09-22 | It is exclusively used in the metal powder core solder wire of hot-work die reparation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105081610B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110039219A (en) * | 2019-05-20 | 2019-07-23 | 丹阳市华龙特钢有限公司 | A kind of high-wearing feature welding material and preparation method thereof |
| CN110181197A (en) * | 2019-06-17 | 2019-08-30 | 武汉科技大学 | A kind of high nitrogen metal powder-cored wire suitable for the welding of high nitrogen armour steel |
| CN111618474A (en) * | 2020-06-01 | 2020-09-04 | 鞍钢附企三炼钢修造总厂 | Impact-resistant and wear-resistant self-protection flux-cored wire |
| CN111761252A (en) * | 2020-06-22 | 2020-10-13 | 中国船舶重工集团公司第七二五研究所 | Seamless flux-cored wire with thin-diameter metal powder core |
| CN113210930A (en) * | 2021-05-21 | 2021-08-06 | 泰安市瑞朗科技有限公司 | Flux-cored wire for hot forging die repair and using method thereof |
| CN114589429A (en) * | 2022-03-31 | 2022-06-07 | 广东省科学院中乌焊接研究所 | Super duplex stainless steel flux-cored wire for impeller additive repair and preparation method and application thereof |
| CN116352306A (en) * | 2023-03-31 | 2023-06-30 | 江苏九洲新材料科技有限公司 | High-toughness nickel-based alloy flux-cored wire and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1181940A (en) * | 1968-09-11 | 1970-02-18 | Inst Elektroswarki Patona | Welding Electrode for Hard Surfacing of Steel Parts |
| SU526475A1 (en) * | 1975-01-17 | 1976-08-30 | Всесоюзный научно-исследовательский и проектно-технологический институт угольного машиностроения | Electrode coating |
| CN101497152A (en) * | 2009-02-26 | 2009-08-05 | 山东大学 | Large-diameter flux-cored wire for revolving body or wear-resistant composite board overlaying welding |
| CN101920413A (en) * | 2010-05-16 | 2010-12-22 | 十堰金科化工有限公司 | Surfacing and repairing flux-cored wire of hot forging die |
| CN102029482A (en) * | 2010-11-19 | 2011-04-27 | 天津市永昌焊丝有限公司 | Gas-shielded overlaying flux cored soldering wire for repairing hot-forging mould |
| CN103008924A (en) * | 2012-12-06 | 2013-04-03 | 北京工业大学 | Flux-cored wire for overlay welding of forging die and application thereof |
| CN104588915A (en) * | 2014-12-09 | 2015-05-06 | 天津大桥金属焊丝有限公司 | Gas shield build-up welding flux-cored wire for hot-forging die |
-
2015
- 2015-09-22 CN CN201510607230.9A patent/CN105081610B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1181940A (en) * | 1968-09-11 | 1970-02-18 | Inst Elektroswarki Patona | Welding Electrode for Hard Surfacing of Steel Parts |
| SU526475A1 (en) * | 1975-01-17 | 1976-08-30 | Всесоюзный научно-исследовательский и проектно-технологический институт угольного машиностроения | Electrode coating |
| CN101497152A (en) * | 2009-02-26 | 2009-08-05 | 山东大学 | Large-diameter flux-cored wire for revolving body or wear-resistant composite board overlaying welding |
| CN101920413A (en) * | 2010-05-16 | 2010-12-22 | 十堰金科化工有限公司 | Surfacing and repairing flux-cored wire of hot forging die |
| CN102029482A (en) * | 2010-11-19 | 2011-04-27 | 天津市永昌焊丝有限公司 | Gas-shielded overlaying flux cored soldering wire for repairing hot-forging mould |
| CN103008924A (en) * | 2012-12-06 | 2013-04-03 | 北京工业大学 | Flux-cored wire for overlay welding of forging die and application thereof |
| CN104588915A (en) * | 2014-12-09 | 2015-05-06 | 天津大桥金属焊丝有限公司 | Gas shield build-up welding flux-cored wire for hot-forging die |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110039219A (en) * | 2019-05-20 | 2019-07-23 | 丹阳市华龙特钢有限公司 | A kind of high-wearing feature welding material and preparation method thereof |
| CN110181197A (en) * | 2019-06-17 | 2019-08-30 | 武汉科技大学 | A kind of high nitrogen metal powder-cored wire suitable for the welding of high nitrogen armour steel |
| CN110181197B (en) * | 2019-06-17 | 2021-03-16 | 武汉科技大学 | High-nitrogen metal powder-cored flux-cored wire suitable for welding high-nitrogen armored steel |
| CN111618474B (en) * | 2020-06-01 | 2021-11-23 | 鞍钢附企三炼钢修造总厂 | Impact-resistant and wear-resistant self-protection flux-cored wire |
| CN111618474A (en) * | 2020-06-01 | 2020-09-04 | 鞍钢附企三炼钢修造总厂 | Impact-resistant and wear-resistant self-protection flux-cored wire |
| CN111761252A (en) * | 2020-06-22 | 2020-10-13 | 中国船舶重工集团公司第七二五研究所 | Seamless flux-cored wire with thin-diameter metal powder core |
| CN111761252B (en) * | 2020-06-22 | 2022-04-15 | 中国船舶重工集团公司第七二五研究所 | Seamless flux-cored wire with thin-diameter metal powder core |
| CN113210930A (en) * | 2021-05-21 | 2021-08-06 | 泰安市瑞朗科技有限公司 | Flux-cored wire for hot forging die repair and using method thereof |
| CN113210930B (en) * | 2021-05-21 | 2022-07-26 | 泰安市瑞朗科技有限公司 | Flux-cored wire for hot forging die repair and using method thereof |
| CN114589429A (en) * | 2022-03-31 | 2022-06-07 | 广东省科学院中乌焊接研究所 | Super duplex stainless steel flux-cored wire for impeller additive repair and preparation method and application thereof |
| CN114589429B (en) * | 2022-03-31 | 2022-08-30 | 广东省科学院中乌焊接研究所 | Super duplex stainless steel flux-cored wire for impeller additive repair and preparation method and application thereof |
| CN116352306A (en) * | 2023-03-31 | 2023-06-30 | 江苏九洲新材料科技有限公司 | High-toughness nickel-based alloy flux-cored wire and preparation method thereof |
| CN116352306B (en) * | 2023-03-31 | 2024-03-15 | 江苏九洲新材料科技有限公司 | High-toughness nickel-based alloy flux-cored wire and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105081610B (en) | 2017-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105057926B (en) | A kind of flux-cored wire special that built-up welding is repaired for hot-work die | |
| CN105081610B (en) | It is exclusively used in the metal powder core solder wire of hot-work die reparation | |
| CN105033507B (en) | A kind of welding rod special for special repairing built-up welding for hot-work die | |
| CN105081611B (en) | A kind of thin diameter flux wire being exclusively used in hot-work die reparation built-up welding | |
| JP7343603B2 (en) | Welded parts made of steel with aluminum or aluminum alloy plating layer that have different strengths and their manufacturing method | |
| JP7383718B2 (en) | Method for manufacturing strong parts such as thin-walled steel welds with aluminum or aluminum alloy plating layer | |
| CN106077992B (en) | A kind of micro- slag gas-shielded flux-cored wire suitable for mold electric arc increasing material manufacturing | |
| CN101559544B (en) | Pure argon gas shielded welding mig flux-cored wire and MIG arc welding method | |
| JP5022428B2 (en) | MIG arc welding wire for hardfacing and MIG arc welding method for hardfacing | |
| CN106984918B (en) | The nickel-base welding rod ENiCrMo-3 of inverse proportion alkaline low-hydrogen type coating | |
| CN105537797B (en) | One kind control high boron flux-cored wire of carbon toughening type self-shield open arc | |
| CN104191110B (en) | The welding wire of applying argon gas protection is exempted from the single face welding and double face shaping back side | |
| JP5909143B2 (en) | MAG welding method for hot rolled steel sheet and MIG welding method for hot rolled steel sheet | |
| CN105081612A (en) | Plasma arc overlaying alloy powder used for heat-working die | |
| CN110576273A (en) | Metal material, process and product for welding LNG (liquefied natural gas) ultralow-temperature stainless steel | |
| CN112247399A (en) | 700 MPa-level annealing-free drawing high-strength steel gas protection solid welding wire | |
| CN105345313A (en) | High-strength flux-cored wire capable of increasing penetration as well as preparation method and application of flux-cored wire | |
| JPH07164184A (en) | Flux cored wire for gas shielded arc welding | |
| CN113828960A (en) | Welding material and welding method for butt welding of copper-steel composite plates | |
| JP3860437B2 (en) | Iron-based consumable welding materials and welded joints with excellent fatigue strength at welded joints | |
| CN114248040B (en) | High-strength anti-crack metal powder cored flux-cored wire for engineering machinery | |
| CN107127478A (en) | A kind of flux-cored wire | |
| CN102962604B (en) | Welding stick | |
| JP3523777B2 (en) | Two-electrode electrogas arc welding method | |
| JPH0999390A (en) | Solid wire for pulse mag welding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170308 |