CN104874941A - Anti-corrosion flux-cored wire - Google Patents
Anti-corrosion flux-cored wire Download PDFInfo
- Publication number
- CN104874941A CN104874941A CN201510227463.6A CN201510227463A CN104874941A CN 104874941 A CN104874941 A CN 104874941A CN 201510227463 A CN201510227463 A CN 201510227463A CN 104874941 A CN104874941 A CN 104874941A
- Authority
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- China
- Prior art keywords
- cored wire
- flux
- powder
- corrosion
- content
- 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.)
- Pending
Links
- 238000005260 corrosion Methods 0.000 title claims abstract description 25
- 239000000843 powder Substances 0.000 claims abstract description 26
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 15
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 15
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims abstract description 14
- 229910000604 Ferrochrome Inorganic materials 0.000 claims abstract description 13
- 239000010436 fluorite Substances 0.000 claims abstract description 13
- 239000010456 wollastonite Substances 0.000 claims abstract description 13
- 229910052882 wollastonite Inorganic materials 0.000 claims abstract description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000010453 quartz Substances 0.000 claims abstract description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000010936 titanium Substances 0.000 claims abstract description 4
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 4
- 229910004762 CaSiO Inorganic materials 0.000 claims description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 239000011651 chromium Substances 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 12
- 229910052751 metal Inorganic materials 0.000 abstract description 9
- 239000002184 metal Substances 0.000 abstract description 9
- 239000002893 slag Substances 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 229910045601 alloy Inorganic materials 0.000 abstract description 2
- 239000000956 alloy Substances 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 abstract description 2
- 230000008021 deposition Effects 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 229910001200 Ferrotitanium Inorganic materials 0.000 abstract 2
- 229910000914 Mn alloy Inorganic materials 0.000 abstract 2
- PYLLWONICXJARP-UHFFFAOYSA-N manganese silicon Chemical compound [Si].[Mn] PYLLWONICXJARP-UHFFFAOYSA-N 0.000 abstract 2
- 229910001634 calcium fluoride Inorganic materials 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 239000011812 mixed powder Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000005491 wire drawing Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000004907 flux Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 230000007704 transition Effects 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
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
- B23K35/0261—Rods, electrodes, wires
- B23K35/0266—Rods, electrodes, wires flux-cored
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3603—Halide salts
- B23K35/3605—Fluorides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3607—Silica or silicates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3608—Titania or titanates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/368—Selection of non-metallic compositions of core materials either alone or conjoint with selection of soldering or welding materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
- B23K35/406—Filled tubular wire or rods
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The present invention discloses an anti-corrosion flux-cored wire. The anti-corrosion flux-cored wire comprises a steel sheath and powder; and the powder is formed by mixing components including, by weight, 8-10% of iron powder, 25-30% of silicon manganese alloy, 18-20% of rutile, 3-5% of wollastonite, 15-17% of ferrochrome, 8-9% of quartz, 0.3-1.5% of fluorite and 1-2% of ferrotitanium. Through increasing proportions of the rutile and the quartz, welding technology performance can be effectively improved; viscosity, melting point and surface tension of slag can be adjusted by the added wollastonite; weld forming can be effectively improved by adding the silicon manganese alloy; deposition efficiency can be improved and the number of depressions and gas holes can be reduced by adding the iron powder; the ferrochrome is added mainly for transiting an alloy element to weld metal; physicochemical performance of the slag can be improved by calcium fluoride in the fluorite; and crystal grains can be refined by titanium contained in the added ferrotitanium, thereby facilitating improvement of weld metal toughness. The flux-cored wire prepared by the powder has the characteristics that slag removal is easy, arc is stable, the weld metal toughness is high, and corrosion resistance is strong.
Description
Technical field
The present invention relates to welding material of metal technical field, be specifically related to a kind of anti-corrosion flux-cored wire.
Background technology
Flux-cored wire is also referred to as flux cored wire or flux cored wire, it is the high efficiency welding material grown up the 1950's, can by the kind of adjustment medicine core additive and ratio, design the welding material of various different purposes easily, to be suitable for the requirement of different industrial and mineral, different condition part of appliance, be used for welding all kinds steel.Flux-cored wire had both had the formula adjustability of covered electrode, had again the feature of solid core welding wire continuous welding simultaneously.Flux-cored wire, just with its unrivaled technology and economy, receives the very big concern of welding boundary both at home and abroad.
Along with welding production is to high efficiency, low cost, high-quality future development, flux-cored wire is as a kind of extremely rising welding material and high-tech product, ratio shared in welding material is increasing, and existing flux-cored wire ubiquity, electric arc are unstable, weld metal toughness is low, corrosion-resistant, be not easy the problems such as de-slag.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of de-slag easily, the high and flux-cored wire that corrosion resistance is stronger of arc stability, weld metal toughness.
The present invention is achieved by the following technical programs:
A kind of anti-corrosion flux-cored wire, comprise sheetmetal and medicinal powder, described medicinal powder is mixed by each component of following percentage by weight: iron powder 8-10%, silicomangan 25-30%, rutile 18-20%, wollastonite 3-5%, ferrochrome 15-17%, quartzy 8-9%, fluorite 0.3-1.5%, ferrotianium 1-2%.
Content >=98% of Fe in described iron powder.
In described silicomangan, the content of Si is 30-35%.
TiO in described rutile
2content>=96%.
CaSiO in described wollastonite
3content>=72%.
In described ferrochrome, the content of chromium is 70-74%.
Content >=98% of silica in described quartz.
Content >=97% of calcirm-fluoride in described fluorite.
In described ferrotianium, the content of titanium is 25-30%.
Beneficial effect of the present invention is: by strengthening rutile, the ratio of quartz, effectively improve welding technological properties, make its arc stability better, the wollastonite added can adjust the viscosity of slag, fusing point and surface tension, add silicomangan and effectively can improve appearance of weld, adding of iron powder contributes to improving deposition efficiency, reduce the quantity of pit and pore, ferrochrome add mainly to weld metal transition alloy elements, calcirm-fluoride in fluorite can improve the physical and chemical performance of slag, its titanium contained of the ferrotianium added can crystal grain thinning, be conducive to the improvement of weld metal toughness, it is easy that the flux-cored wire prepared by this medicinal powder has de-slag, arc stability, high and the feature that corrosion resistance is strong of weld metal toughness.
Detailed description of the invention
Below in conjunction with specific embodiment, technical scheme of the present invention is further described, but described in claimed scope is not limited to.
Embodiment one
Getting 500g mixture is example: iron powder 40g, silicomangan 125g, rutile 90g, wollastonite 15g, ferrochrome 75g, quartzy 40g, fluorite 1.5g, ferrotianium 5g.Various powder is put into mixed powder machine mixing 45min, join in sheetmetal by powder after allowing, filling rate is 18%, makes medicinal powder package be rolled in wherein, then namely obtains the anti-corrosion flux-cored wire of the present invention by wire drawing machine process.
Embodiment two
Getting 500g mixture is example: iron powder 45g, silicomangan 140g, rutile 95g, wollastonite 20g, ferrochrome 80g, quartzy 42.5g, fluorite 4.5g, ferrotianium 7.5g.Various powder is put into mixed powder machine mixing 45min, join in sheetmetal by powder after allowing, filling rate is 18%, makes medicinal powder package be rolled in wherein, then namely obtains the anti-corrosion flux-cored wire of the present invention by wire drawing machine process.
Embodiment three
Getting 500g mixture is example: iron powder 50g, silicomangan 150g, rutile 100g, wollastonite 25g, ferrochrome 85g, quartzy 45g, fluorite 7.5g, ferrotianium 10g.Various powder is put into mixed powder machine mixing 45min, join in sheetmetal by powder after allowing, filling rate is 18%, makes medicinal powder package be rolled in wherein, then namely obtains the anti-corrosion flux-cored wire of the present invention by wire drawing machine process.
Embodiment four
Getting 1000g mixture is example: iron powder 80g, silicomangan 250g, rutile 180g, wollastonite 30g, ferrochrome 150g, quartzy 80g, fluorite 3g, ferrotianium 10g.Various powder is put into mixed powder machine mixing 45min, join in sheetmetal by powder after allowing, filling rate is 19%, makes medicinal powder package be rolled in wherein, then namely obtains the anti-corrosion flux-cored wire of the present invention by wire drawing machine process.
Embodiment five
Getting 1000g mixture is example: iron powder 90g, silicomangan 280g, rutile 190g, wollastonite 40g, ferrochrome 160g, quartzy 85g, fluorite 9g, ferrotianium 15g.Various powder is put into mixed powder machine mixing 45min, join in sheetmetal by powder after allowing, filling rate is 19%, makes medicinal powder package be rolled in wherein, then namely obtains the anti-corrosion flux-cored wire of the present invention by wire drawing machine process.
Embodiment six
Getting 1000g mixture is example: iron powder 100g, silicomangan 300g, rutile 200g, wollastonite 50g, ferrochrome 170g, quartzy 90g, fluorite 15g, ferrotianium 20g.Various powder is put into mixed powder machine mixing 45min, join in sheetmetal by powder after allowing, filling rate is 19%, makes medicinal powder package be rolled in wherein, then namely obtains the anti-corrosion flux-cored wire of the present invention by wire drawing machine process.
Claims (9)
1. an anti-corrosion flux-cored wire, comprise sheetmetal and medicinal powder, it is characterized in that: described medicinal powder is mixed by each component of following percentage by weight: iron powder 8-10%, silicomangan 25-30%, rutile 18-20%, wollastonite 3-5%, ferrochrome 15-17%, quartzy 8-9%, fluorite 0.3-1.5%, ferrotianium 1-2%.
2. anti-corrosion flux-cored wire according to claim 1, is characterized in that: content >=98% of Fe in described iron powder.
3. anti-corrosion flux-cored wire according to claim 1, is characterized in that: in described silicomangan, the content of Si is 30-35%.
4. anti-corrosion flux-cored wire according to claim 1, is characterized in that: content >=96% of TiO2 in described rutile.
5. anti-corrosion flux-cored wire according to claim 1, is characterized in that: CaSiO in described wollastonite
3content>=72%.
6. anti-corrosion flux-cored wire according to claim 1, is characterized in that: in described ferrochrome, the content of chromium is 70-74%.
7. anti-corrosion flux-cored wire according to claim 1, is characterized in that: content >=98% of silica in described quartz.
8. anti-corrosion flux-cored wire according to claim 1, is characterized in that: content >=97% of calcirm-fluoride in described fluorite.
9. anti-corrosion flux-cored wire according to claim 1, is characterized in that: in described ferrotianium, the content of titanium is 25-30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510227463.6A CN104874941A (en) | 2015-05-06 | 2015-05-06 | Anti-corrosion flux-cored wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510227463.6A CN104874941A (en) | 2015-05-06 | 2015-05-06 | Anti-corrosion flux-cored wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104874941A true CN104874941A (en) | 2015-09-02 |
Family
ID=53942751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510227463.6A Pending CN104874941A (en) | 2015-05-06 | 2015-05-06 | Anti-corrosion flux-cored wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104874941A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107498212A (en) * | 2017-10-18 | 2017-12-22 | 镇江市锶达合金材料有限公司 | A kind of property of medicine solder wire material formula and its manufacture method |
| CN111037153A (en) * | 2019-12-27 | 2020-04-21 | 中国第一重型机械集团大连加氢反应器制造有限公司 | E316H type welding rod for manufacturing fast neutron reactor equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1603055A (en) * | 2004-11-15 | 2005-04-06 | 攀钢集团攀枝花钢铁研究院 | Flux-cored wire for backing roll build-up welding |
| CN101450425A (en) * | 2008-12-31 | 2009-06-10 | 宁波隆兴焊割科技股份有限公司 | Heat-resisting steel flux-cored wire |
| EP2105243A1 (en) * | 2008-03-26 | 2009-09-30 | Nippon Steel & Sumikin Welding Co., Ltd. | Metal-based flux cored wire for Ar-CO 2 mixed gas shielded arc welding |
| JP5153421B2 (en) * | 2008-04-07 | 2013-02-27 | 日鐵住金溶接工業株式会社 | Flux-cored wire for gas shielded arc welding |
| CN103495817A (en) * | 2013-10-16 | 2014-01-08 | 宁波隆兴焊割科技股份有限公司 | Alkaline welding flux cored wire protected by CO2 gas or 80Ar + CO2 gas |
| CN103659039A (en) * | 2013-12-04 | 2014-03-26 | 宁波隆兴焊割科技股份有限公司 | Supersonic-speed flame spraying type flux-cored wire and preparation method thereof |
-
2015
- 2015-05-06 CN CN201510227463.6A patent/CN104874941A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1603055A (en) * | 2004-11-15 | 2005-04-06 | 攀钢集团攀枝花钢铁研究院 | Flux-cored wire for backing roll build-up welding |
| EP2105243A1 (en) * | 2008-03-26 | 2009-09-30 | Nippon Steel & Sumikin Welding Co., Ltd. | Metal-based flux cored wire for Ar-CO 2 mixed gas shielded arc welding |
| JP5153421B2 (en) * | 2008-04-07 | 2013-02-27 | 日鐵住金溶接工業株式会社 | Flux-cored wire for gas shielded arc welding |
| CN101450425A (en) * | 2008-12-31 | 2009-06-10 | 宁波隆兴焊割科技股份有限公司 | Heat-resisting steel flux-cored wire |
| CN103495817A (en) * | 2013-10-16 | 2014-01-08 | 宁波隆兴焊割科技股份有限公司 | Alkaline welding flux cored wire protected by CO2 gas or 80Ar + CO2 gas |
| CN103659039A (en) * | 2013-12-04 | 2014-03-26 | 宁波隆兴焊割科技股份有限公司 | Supersonic-speed flame spraying type flux-cored wire and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107498212A (en) * | 2017-10-18 | 2017-12-22 | 镇江市锶达合金材料有限公司 | A kind of property of medicine solder wire material formula and its manufacture method |
| CN111037153A (en) * | 2019-12-27 | 2020-04-21 | 中国第一重型机械集团大连加氢反应器制造有限公司 | E316H type welding rod for manufacturing fast neutron reactor equipment |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150902 |