CN101554689B - Flux-cored alloyed cast iron homogeneous gas-welding wire and electric welding rod - Google Patents
Flux-cored alloyed cast iron homogeneous gas-welding wire and electric welding rod Download PDFInfo
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- CN101554689B CN101554689B CN2009100225470A CN200910022547A CN101554689B CN 101554689 B CN101554689 B CN 101554689B CN 2009100225470 A CN2009100225470 A CN 2009100225470A CN 200910022547 A CN200910022547 A CN 200910022547A CN 101554689 B CN101554689 B CN 101554689B
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- 238000003466 welding Methods 0.000 title claims abstract description 78
- 229910001018 Cast iron Inorganic materials 0.000 title claims abstract description 24
- 239000000843 powder Substances 0.000 claims abstract description 48
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 30
- 239000010959 steel Substances 0.000 claims abstract description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000010439 graphite Substances 0.000 claims abstract description 26
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 26
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 22
- 239000011248 coating agent Substances 0.000 claims abstract description 22
- 238000000576 coating method Methods 0.000 claims abstract description 22
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 18
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 14
- 239000004411 aluminium Substances 0.000 claims abstract description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 9
- OSMSIOKMMFKNIL-UHFFFAOYSA-N calcium;silicon Chemical compound [Ca]=[Si] OSMSIOKMMFKNIL-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000004927 clay Substances 0.000 claims abstract description 9
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 9
- 239000003814 drug Substances 0.000 claims description 58
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 22
- 229910052788 barium Inorganic materials 0.000 claims description 13
- 229910052797 bismuth Inorganic materials 0.000 claims description 13
- 229910052759 nickel Inorganic materials 0.000 claims description 13
- 229910052719 titanium Inorganic materials 0.000 claims description 13
- 229940079593 drug Drugs 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 10
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 8
- 229910045601 alloy Inorganic materials 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 8
- 239000000470 constituent Substances 0.000 claims description 8
- 239000010433 feldspar Substances 0.000 claims description 8
- 239000004579 marble Substances 0.000 claims description 8
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract 1
- 229910000676 Si alloy Inorganic materials 0.000 abstract 1
- 229910018619 Si-Fe Inorganic materials 0.000 abstract 1
- 229910008289 Si—Fe Inorganic materials 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
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical group [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 12
- 238000005087 graphitization Methods 0.000 description 12
- 239000002243 precursor Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- 238000005303 weighing Methods 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 229910001060 Gray iron Inorganic materials 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 239000002932 luster Substances 0.000 description 6
- 208000037656 Respiratory Sounds Diseases 0.000 description 5
- 238000005266 casting Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 5
- 235000019353 potassium silicate Nutrition 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 229910000863 Ferronickel Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000012802 pre-warming Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Nonmetallic Welding Materials (AREA)
Abstract
The invention discloses a flux-cored alloyed cast iron homogeneous gas-welding wire which consists of H08A steel strip and alloyed flux-cored powder cladded in the H08A steel strip, and the flux-coredpowder comprises the components based on the weight percentage: 15-25% of graphite, 50-60% of 75 Si-Fe, 10-15% of Ni, 2.0-4.8% of Ti, 3.8-6.0% of Al, 0.8-2.5% of Bi, 0.1-0.3% of Ba, 0.5-1.8% Ce and 0 .1-0.3% of RE, and the total weight percentage is 100%. The invention also discloses a flux-cored alloyed cast iron homogeneous electric welding rod, a flux-cored welding core of which consists of theH08A steel strip and the alloyed flux-cored powder cladded in the H08A steel strip, and the coating applied on the welding rod comprises the components based on the weight percentage: 20-30% of marbl e, 10-16% of potassium feldspar, 5-12% of scale graphite, 6-10% of clay graphite, 15-25% of 75<#> silicoferrite, 3-7% of 30<#> calcium silicon alloy, 3-7% of aluminium powder, 3-7% of ferrous powder, 10-15% of white slime, and 0.8-1.2% of sodium carbonate, and the total weight percentage is 100%.
Description
Technical field
The invention belongs to technical field of welding materials, be specifically related to the cored alloyed cast iron homogeneous torch welding rods fabricated of a kind of medicine, the invention still further relates to the cored alloyed cast iron homogeneous welding rod of a kind of medicine.
Background technology
As extraordinary welding material, cast iron welding wire, welding rod are indispensable in engineering fields such as ironcasting welding and defect repair.Because impurity content height such as sulphur, phosphorus in the cast iron, intensity is low, plasticity is poor, its intrinsic coagulating property has determined cast iron in the REPAIR WELDING process, the soldering district is easy to generate spoken parts in traditional operas and crackle, especially under the cold welding condition, spoken parts in traditional operas and crackle tendency are bigger, have had a strong impact on the machining property and the serviceability of foundry goods.
Adopt the electrode for cast iron of the outer graphitization type coating of non-cast iron core to carry out the cast iron welding, for example Z208 (low-carbon steel core) welding rod, Z308 (pure nickel core) welding rod, Z408 (ferronickel core) welding rod etc., though spoken parts in traditional operas and crackle are reduced, but because composition of weld line, tissue and performance and color and luster and foundry goods do not match, crack resistance is poor, can't satisfy the combination property requirement of repairing as colour consistency, Performance Match etc.
Use and cast iron homogeneous welding material such as commercially available Z208, Z248 welding rod, adopting hot welding procedure is the effective measures that overcome above-mentioned defective, but the warm of hot welding is long, complex process, energy resource consumption is big, the production cycle is long, labour intensity is big, has increased the production cost of foundry goods undoubtedly.
Summary of the invention
The object of the present invention is to provide the cored alloyed cast iron homogeneous torch welding rods fabricated of a kind of medicine, realized under room temperature or low preheat temperature, welding, can reduce spoken parts in traditional operas and crackle tendency effectively, and the color and luster of weld zone metal is consistent with the foundry goods body.
Another object of the present invention is to provide a kind of medicine cored alloyed cast iron homogeneous welding rod, realized under room temperature or low preheat temperature, welding, can reduce spoken parts in traditional operas and crackle tendency effectively, and the color and luster of weld zone metal is consistent with the foundry goods body.
The technical solution adopted in the present invention is, the cored alloyed cast iron homogeneous torch welding rods fabricated of a kind of medicine, this welding wire is by the alloy chemical drug core powder constituent that coats in H08A steel band and the H08A steel band, this medicine core powder is composed of the following components by weight percentage: graphite 15%～25%, 75Si-Fe 50%～60%, Ni 10%～15%, Ti 2.0%～4.8%, Al 3.8%～6.0%, Bi 0.8%～2.5%, Ba 0.1%～0.3%, Ce 0.5%～1.8%, RE 0.1%～0.3%, above components contents summation is 100%.
Another technical scheme of the present invention is, the cored alloyed cast iron homogeneous welding rod of a kind of medicine, by core wire and outer be coated with coating and form, described core wire is made by the alloy chemical drug core powder that coats in H08A steel band and the H08A steel band, this medicine core powder is composed of the following components by weight percentage: graphite 15%～25%, 75Si-Fe 50%～60%, Ni 10%～15%, Ti 2.0%～4.8%, Al 3.8%～6.0%, Bi 0.8%～2.5%, Ba 0.1%～0.3%, Ce 0.5%～1.8%, RE 0.1%～0.3%, and total percentage by weight is 100%; Described coating is composed of the following components by weight percentage: marble 20%～30%, potassic feldspar 10%～16%, flaky graphite 5%～12%, powdered graphite 6%～10%, 75# ferrosilicon 15%～25%, 30# calcium-silicon 3%～7%, aluminium powder 3%～7%, iron powder 3%～7%, white clay 10%～15%, sodium carbonate 0.8%～1.2%, total percentage by weight are 100%.
Cored alloyed cast iron homogeneous torch welding rods fabricated of medicine of the present invention and welding rod have been realized the welding of casting pig homogeneity cold welding or low-temperature prewarming, soldering, and welding temperature is in room temperature～200 ℃ scope; Weld seam color and luster, weld strength and hardness and ironcasting body basically identical; The weld seam crack resistance strengthens, can process; The weld seam composition and be organized as typical can structure of cast iron.
The specific embodiment
The present invention is described in detail below in conjunction with the specific embodiment.
The cored alloyed cast iron homogeneous torch welding rods fabricated of medicine of the present invention, this welding wire is by the alloy chemical drug core powder constituent that coats in H08A steel band and the H08A steel band, medicine core powder is composed of the following components by weight percentage: graphite (Graphite is hereinafter to be referred as G) 15%～25%, 75Si-Fe 50%～60%, Ni 10%～15%, Ti 2.0%～4.8%, Al 3.8%～6.0%, Bi 0.8%～2.5%, Ba 0.1%～0.3%, Ce 0.5%～1.8%, RE 0.1%～0.3%, the gross weight of above component is 100%.
In the torch welding rods fabricated medicine core powder of the present invention, the principle of qualification of each component and content is: obtain casting pig and gray iron tissue in order to make weld metal, prevent that weld seam and fusion area from producing spoken parts in traditional operas, guarantee the machining property in welding (benefit) district, phosphorus content and silicon content are all higher in core wire (silk) the medicine core powder, and addition is respectively: G 15%～25%, 75Si-Fe 50%～60%; For the mechanical performance of improving weld seam and promote graphitization, add minor N i and Al; In order to purify weld metal, reduce the influence of objectionable impurities elements such as S, P, also added RE in the core wire; For crystal grain thinning, promotion graphite forming core and growth fast, elements such as micro-Bi, Ti, Ce and Ba have also been added.
Torch welding rods fabricated preparation method of the present invention is, implement according to following steps: at first, the following component of weighing by weight percentage: G 15%～25%, 75Si-Fe 50%～60%, Ni 10%～15%, Ti 2.0%～4.8%, Al 3.8%～6.0%, Bi 0.8%～2.5%, Ba 0.1%～0.3%, Ce 0.5%～1.8%, RE 0.1%～0.3%, load weighted various component powders mixes and obtains medicine core powder according to the above ratio; Select H08A steel band clad alloy chemical drug core powder for use, prepare the precursor that diameter is Φ 6mm with the steel band method then on the YHZ-1 flux-cored wire forming machine, the steel band that uses is the H08A steel band of 14 * 0.5mm, and its composition sees Table 1; Precursor pulls out through one mould of Φ 5.5mm and the two road die drawings of Φ 5.0mm again, prepares the medicine core torch welding rods fabricated of Φ 5mm, and flux-cored wire can be directly used in the gas welding of gray iron.
The table 1 flux-cored wire chemical component table of cold-rolled strip
| Composition | C | Mn | Si | ?S | ?P | Fe |
| Content/% | 0.012 | 0.22 | 0.11 | ?＜0.011 | ?＜0.008 | Surplus |
Embodiment 1: implement according to following steps: at first, the following component of weighing by weight percentage: G 17%, 75Si-Fe 57%, Ni 15%, Ti 2%, Al 6.0%, Bi 2.1%, Ba 0.3%, Ce 0.5%, RE 0.1%, load weighted various component powders mixes and obtains medicine core powder according to the above ratio; Select for use the H08A steel band to coat this medicine core powder, prepare the precursor that diameter is Φ 6mm with the steel band method then on the YHZ-1 flux-cored wire forming machine, precursor pulls out through one mould of Φ 5.5mm and the two road die drawings of Φ 5.0mm, prepares the medicine core torch welding rods fabricated of Φ 5mm.
Embodiment 2: implement according to following steps: at first, the following component of weighing by weight percentage: G 17%, 75Si-Fe 60%, Ni 10%, Ti 4.8%, Al 5.2%, Bi 0.8%, Ba 0.1%, Ce 1.8%, RE 0.3%, load weighted various component powders mixes and obtains medicine core powder according to the above ratio; Select for use the H08A steel band to coat this medicine core powder, prepare the precursor that diameter is Φ 6mm with the steel band method then on the YHZ-1 flux-cored wire forming machine, precursor pulls out through one mould of Φ 5.5mm and the two road die drawings of Φ 5.0mm, prepares the medicine core torch welding rods fabricated of Φ 5mm.
Embodiment 3: implement according to following steps: at first, the following component of weighing by weight percentage: G 15%, 75Si-Fe 60%, Ni 13.5%, Ti 2.8%, Al 4.8%, Bi 2.5%, Ba 0.2%, Ce 1%, RE 0.2%, load weighted various component powders mixes and obtains medicine core powder according to the above ratio; Select for use the H08A steel band to coat this medicine core powder, prepare the precursor that diameter is Φ 6mm with the steel band method then on the YHZ-1 flux-cored wire forming machine, precursor pulls out through one mould of Φ 5.5mm and the two road die drawings of Φ 5.0mm, prepares the medicine core torch welding rods fabricated of Φ 5mm.
Embodiment 4: implement according to following steps: at first, the following component of weighing by weight percentage: G 25%, 75Si-Fe 50%, Ni 14%, Ti 3.8%, Al 3.8%, Bi 2.0%, Ba 0.2%, Ce 1.0%, RE 0.2%, load weighted various component powders mixes and obtains medicine core powder according to the above ratio; Select for use the H08A steel band to coat this medicine core powder, prepare the precursor that diameter is Φ 6mm with the steel band method then on the YHZ-1 flux-cored wire forming machine, precursor pulls out through one mould of Φ 5.5mm and the two road die drawings of Φ 5.0mm, prepares the medicine core torch welding rods fabricated of Φ 5mm.
The cored alloyed cast iron homogeneous welding rod of medicine of the present invention, form by core wire and coating, wherein core wire is by the alloy chemical drug core powder constituent that coats in H08A steel band and the H08A steel band, this medicine core powder is composed of the following components by weight percentage: G 15%～25%, 75Si-Fe 50%～60%, Ni 10%～15%, Ti 2.0%～4.8%, Al 3.8%～6.0%, Bi 0.8%～2.5%, Ba 0.1%～0.3%, Ce 0.5%～1.8%, RE 0.1%～0.3%, total percentage by weight are 100%; Coating powder wherein is composed of the following components by weight percentage: marble 20%～30%, potassic feldspar 10%～16%, flaky graphite 5%～12%, powdered graphite 6%～10%, 75# ferrosilicon 15%～25%, 30# calcium-silicon 3%～7%, aluminium powder 3%～7%, iron powder 3%～7%, white clay 10%～15%, sodium carbonate 0.8%～1.2%, total percentage by weight are 100%.Each component of coating powder mainly is the effect of stablizing welding arc, transition alloy elements and metallurgical protection.
The preparation method of welding rod of the present invention is to implement according to following steps:
Steps A, at first, the following component of weighing by weight percentage: G 15%～25%, 75Si-Fe 50%～60%, Ni 10%～15%, Ti 2.0%～4.8%, Al 3.8%～6.0%, Bi 0.8%～2.5%, Ba 0.1%～0.3%, Ce 0.5%～1.8%, RE 0.1%～0.3%, load weighted various component powders mixes and obtains medicine core powder according to the above ratio; Select for use the H08A steel band to coat this medicine core powder, prepare the precursor that diameter is Φ 6mm with the steel band method then on the YHZ-1 flux-cored wire forming machine, precursor pulls out through one mould of Φ 5.5mm and the two road die drawings of Φ 5.0mm, prepares the medicine core core wire of Φ 5mm;
Step B, the following component of weighing by weight percentage: marble 20%～30%, potassic feldspar 10%～16%, flaky graphite 5%～12%, powdered graphite 6%～10%, 75# ferrosilicon 15%～25%, 30# calcium-silicon 3%～7%, aluminium powder 3%～7%, iron powder 3%～7%, white clay 10%～15%, sodium carbonate 0.8%～1.2%, total percentage by weight is 100%, the dried waterglass that is mixed even back adding 5～7% of all coating powdery components is mixed and stirred, obtain graphitization type medicinal powder;
Step C, the core wire that again steps A is obtained are coated with the graphitization type coating that step B obtains outward, on 25T extrusion press preparation drug core homogeneous electrode, and drying obtains cast iron homogeneous welding rod.
Embodiment 5: at first step and the constituent content according to embodiment 1 makes medicine core core wire; The following component of weighing by weight percentage then: marble 20%, potassic feldspar 16%, flaky graphite 12%, powdered graphite 6%, 75# ferrosilicon 15%, 30# calcium-silicon 7%, aluminium powder 7%, iron powder 6.2%, white clay 10%, sodium carbonate 0.8%, total percentage by weight is 100%, the dried waterglass that is mixed even back adding 5% of all coating powdery components is mixed and stirred, obtain graphitization type medicinal powder; With the outer graphitization type coating of the core wire of embodiment 1 gained, prepare drug core homogeneous electrode on the 25T extrusion press again, drying obtains the welding rod finished product.
Embodiment 6: at first step and the constituent content according to embodiment 2 makes medicine core core wire; The following component of weighing by weight percentage then: marble 25%, potassic feldspar 11%, flaky graphite 5%, powdered graphite 10%, 75# ferrosilicon 20%, 30# calcium-silicon 3%, aluminium powder 6.8%, iron powder 3%, white clay 15%, sodium carbonate 1.2%, total percentage by weight is 100%, the dried waterglass that is mixed even back adding 6% of all coating powdery components is mixed and stirred, obtain graphitization type coating; With the outer graphitization type coating of the core wire of embodiment 2 gained, prepare drug core homogeneous electrode on the 25T extrusion press again, drying obtains the welding rod finished product.
Embodiment 7: at first step and the constituent content according to embodiment 3 makes medicine core core wire; The following component of weighing by weight percentage then: marble 30%, potassic feldspar 10%, flaky graphite 6%, powdered graphite 7%, 75# ferrosilicon 25%, 30# calcium-silicon 4%, aluminium powder 3%, iron powder 3%, white clay 11%, sodium carbonate 1%, total percentage by weight is 100%, the dried waterglass that is mixed even back adding 5% of all coating powdery components is mixed and stirred, obtain graphitization type coating; With the outer graphitization type coating of the core wire of embodiment 3 gained, prepare drug core homogeneous electrode on the 25T extrusion press again, drying obtains the welding rod finished product.
Embodiment 8: at first step and the constituent content according to embodiment 4 makes medicine core core wire; The following component of weighing by weight percentage then: marble 23%, potassic feldspar 12%, flaky graphite 10%, powdered graphite 8%, 75# ferrosilicon 18%, 30# calcium-silicon 5%, aluminium powder 4%, iron powder 7%, white clay 12%, sodium carbonate 1%, total percentage by weight is 100%, the dried waterglass that is mixed even back adding 7% of all coating powdery components is mixed and stirred, obtain graphitization type coating; With the outer graphitization type coating of the core wire of embodiment 4 gained, prepare drug core homogeneous electrode on the 25T extrusion press again, drying obtains the welding rod finished product.
The torch welding rods fabricated and the welding rod deposited metal chemical analysis of the embodiment of the invention 1,2,5,6 are as shown in table 2, and wherein, embodiment 1,2 is a medicine core torch welding rods fabricated deposited metal composition, and embodiment 5,6 is a medicine core welding rod deposited metal composition.
Several embodiment torch welding rods fabricated of table 2 the present invention and welding rod deposited metal chemical analysis table (weight %)
Utilize the welding rod welding casting pig of the above embodiment of the present invention preparation, the technological parameter during welding is as shown in table 3.The mechanical property of the torch welding rods fabricated of each embodiment of the present invention and welding rod deposited metal is as shown in table 4, and wherein, embodiment 1～4 is gray iron medicine core torch welding rods fabricated embodiment of the present invention, and embodiment 5～8 is gray iron medicine core welding rod embodiment of the present invention.Vision intensity, hardness are better from table 4, and be good with the ironcasting matching, and the joint of implementing after the welding is consistent with the gray iron casting color and luster.
Process parameter table when table 3 welding rod of the present invention/medicine core torch welding rods fabricated is welded grey cast-iron
The mechanical property table of each embodiment torch welding rods fabricated of table 4 the present invention and welding rod deposited metal
In sum, material of the present invention, preparation easily, both simplified the wlding production technology, saved the energy again, environmentally safe, but also can guarantee the strong graphitizability of wlding, acquisition and the weld zone that foundry goods body composition, tissue, performance and color and luster are complementary realize the low temperature high-performance welding or the reparation of defective gray iron casting.
Claims (2)
1. cored alloyed cast iron homogeneous torch welding rods fabricated of medicine, it is characterized in that, this welding wire is by the alloy chemical drug core powder constituent that coats in H08A steel band and the H08A steel band, this medicine core powder is composed of the following components by weight percentage: graphite 15%～25%, 75Si-Fe 50%～60%, Ni 10%～15%, Ti 2.0%～4.8%, Al 3.8%～6.0%, Bi 0.8%～2.5%, Ba 0.1%～0.3%, Ce 0.5%～1.8%, RE 0.1%～0.3%, above components contents summation is 100%.
2. cored alloyed cast iron homogeneous welding rod of medicine by core wire and be coated with coating and form outward, is characterized in that,
Described core wire is made by the alloy chemical drug core powder that coats in H08A steel band and the H08A steel band, this medicine core powder is composed of the following components by weight percentage: graphite 15%～25%, 75Si-Fe 50%～60%, Ni 10%～15%, Ti 2.0%～4.8%, Al 3.8%～6.0%, Bi 0.8%～2.5%, Ba 0.1%～0.3%, Ce 0.5%～1.8%, RE0.1%～0.3%, total percentage by weight are 100%;
Described coating is composed of the following components by weight percentage: marble 20%～30%, potassic feldspar 10%～16%, flaky graphite 5%～12%, powdered graphite 6%～10%, 75# ferrosilicon 15%～25%, 30# calcium-silicon 3%～7%, aluminium powder 3%～7%, iron powder 3%～7%, white clay 10%～15%, sodium carbonate 0.8%～1.2%, total percentage by weight are 100%.
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| CN101850478A (en) * | 2010-06-21 | 2010-10-06 | 西安理工大学 | Welding material for rapidly welding and repairing defects of large-scale grey iron casting and repairing method thereof |
| CN102528311B (en) * | 2012-01-10 | 2013-12-04 | 西安理工大学 | Welding material for quickly welding and repairing defects of HT300 grey iron castings and repair method |
| CN102528322B (en) * | 2012-01-10 | 2013-09-04 | 西安理工大学 | Graphitized alloy casting electric welding rod |
| CN105728980A (en) * | 2016-04-19 | 2016-07-06 | 南通豪泰焊材有限公司 | Nickel-based heterogeneous electrode for welding cast iron and manufacture method thereof |
| CN113967809B (en) * | 2021-10-08 | 2022-10-14 | 广州鑫钻新材料科技开发有限公司 | Iron-nickel base alloy flux-cored welding electrode and preparation method thereof |
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