WO2000021711A1 - Materiau en poudre pour le recouvrement de plasma en poudre et metal de recouvrement du plasma en poudre - Google Patents
Materiau en poudre pour le recouvrement de plasma en poudre et metal de recouvrement du plasma en poudre Download PDFInfo
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- WO2000021711A1 WO2000021711A1 PCT/JP1999/005615 JP9905615W WO0021711A1 WO 2000021711 A1 WO2000021711 A1 WO 2000021711A1 JP 9905615 W JP9905615 W JP 9905615W WO 0021711 A1 WO0021711 A1 WO 0021711A1
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- powder
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
- C22C33/0285—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5% with Cr, Co, or Ni having a minimum content higher than 5%
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
- B23K35/308—Fe as the principal constituent with Cr as next major constituent
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/073—Metallic material containing MCrAl or MCrAlY alloys, where M is nickel, cobalt or iron, with or without non-metal elements
-
- 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
Definitions
- the present invention relates to a powder material and a powder plasma material used when performing bright powder plasma overlay welding for the purpose of corrosion resistance, abrasion resistance, etc. of furnace tubes and furnace wall panels of industrial recovery boilers such as paper mills. Sori-weld metal related. Background art
- 18% C r overlay welding material is used.
- 18% Cr coated arc welding rods and 18% Cr gas shielded arc welding wires have been used as the overlay material.
- FIG. 1 is a diagram showing a basic configuration of a conventionally known powder plasma overlay welding apparatus. That is, a pilot arc power supply 10 is connected between the tungsten electrode 1 and the nozzle 2, and a DC power supply 12 is connected between the tungsten electrode 1 and the base material 11 to be welded. Outside the nozzle 1, an intermediate nozzle 3 force S is arranged, and outside the intermediate nozzle 3, an outer nozzle 4 is arranged. Plasma gas (for example, Ar gas) is supplied between the tungsten electrode 1 and the nozzle 2, and powder material for overlay welding is supplied between the nozzle 2 and the intermediate nozzle 3 (for example, Ar gas).
- Plasma gas for example, Ar gas
- powder material for overlay welding is supplied between the nozzle 2 and the intermediate nozzle 3 (for example, Ar gas).
- FIG. 2 is a diagram showing a situation where powder plasma welding is performed on a carbon steel pipe. That is, a plasma arc is generated between the carbon steel pipe 5 (for example, JISSTB 410) and the plasma welding torch 6 disposed opposite to the carbon steel pipe 5, and the supplied powder material is melted to form a molten pool 7 in order. By temporarily moving the plasma welding torch 6, the molten pool 7 solidifies to form a weld metal.
- a shield gas for example, Ar gas
- the welding amount of the coated arc welding and the MAG welding method is a maximum of about 3 kg Z 1 hr.
- the force S, and the maximum capacity of 4 to 6 kg Z lhr can be Can be achieved.
- highly efficient welding can be realized.
- the powder plasma build-up welding method has a smaller dilution ratio with the base material than the current MAG welding method, so that a decrease in the Cr content in the build-up weld metal can be suppressed.
- high quality weld metal can be obtained because there are few welding defects such as blowholes and poor fusion.
- the present invention is directed to the use of powder plasma build-up welding, which is a high-efficiency welding method, for build-up welding performed for the purpose of corrosion resistance, wear resistance, and the like of furnace tubes and furnace wall panels of a recovery boiler.
- An object of the present invention is to provide a powder material for powder plasma overlay welding, which is excellent in quality.
- the inventor of the present invention has conducted intensive studies and found that C: 0.06 to 0.15%, Si: 0.2 to 1.0%, Mn: 0.2 to 1.0%, Cr; 17 to 3 ⁇ %, Nb; 0.6 to 1.5%, Ni: 0.5% or less, the balance being Fe and unavoidable impurities.
- the weld metal has excellent corrosion resistance and bending properties.
- the present invention basically contains 17 to 30% Cr, the amount of corrosion thinning of the recovered boiler varies depending on the heat load and operating conditions, and also at the position in the boiler.
- use materials with high Cr content hereinafter sometimes referred to as 25Cr-based materials
- 25Cr-based materials use materials with high Cr content
- 18Cr-based material By using a material with a low Cr content (hereinafter sometimes referred to as 18Cr-based material), the cost can be reduced.
- the 25 Cr-based material is C; 0.06 to 0.15%, Si; 0.2 to: 1.0%, Mn; 0.2 to 1.0%, Cr; 23 to 30%, Nb; 0.6 to: 1.5%, Ni; 0.5% or less, with the balance being Fe and unavoidable impurities.
- 8 Cr-based materials include: C; 0.06 to 0.15%, Si; 0.2 to: 1.0%, Mn: 0.2 to 1.0%, Cr; 17 ⁇ 23%, Nb; 0.6 ⁇ : 1.5%, Ni; 0.5% or less And the balance is Fe and inevitable impurities.
- the powder material of the present invention is not limited to the case of only the alloy powder having the above composition, but finally has the above composition, such as a mixture of metal powder of each constituent element, a mixture of alloy powder of a plurality of elements, and the like. It is not particularly limited as long as it is a combination of metal powder and alloy powder. Further, the powder material of the present invention is usually adjusted to a particle size of about 63 to 500 ⁇ m and supplied to powder plasma overlay welding, but this particle size does not limit the present invention. Absent. BRIEF DESCRIPTION OF THE FIGURES
- FIG. 1 is a diagram showing a basic configuration of a powder plasma overlay welding apparatus.
- FIG. 2 is a diagram showing the state of powder plasma overlay welding.
- FIG. 3 is a diagram showing a shape of a front bending test piece in an example of the present invention.
- FIG. 4 is a diagram showing a procedure for performing a table bending test in an example of the present invention.
- FIG. 5 is a diagram showing the conditions of the corrosion test in the example of the present invention.
- FIG. 6 is a diagram showing a method of obtaining a dilution ratio between a test material and a base material in an example of the present invention.
- C is an unavoidable element for the purpose of forming carbides such as NbC and TiC to reduce the crystal grain size of the weld metal. If the amount of C is less than 0.06%, the strength of the weld metal becomes poor, so it was decided to contain C in an amount of not less than 0.06%. However, if the content is too large, the weld metal structure is significantly hardened. You. The preferred range of C is 0.06 to 0.12%.
- Si is an element contained for the purpose of deoxidation, and if it is less than 0.2%, a sufficient deoxidizing effect cannot be obtained. However, if the content is too large, the toughness of the deposited metal is degraded, so it must be suppressed to 1.0% or less.
- the preferred amount of Si is 0.3 to 0.8%.
- Mn is an element that is effective in deoxidizing, securing strength, and improving toughness. However, if it is less than 0.2%, the effect of deoxidation cannot be sufficiently obtained, and if it is too large, the structure is hardened and the toughness is reduced, so it must be suppressed to 1.0% or less.
- the preferred amount of Mn is 0.3% to 0.8%.
- Cr is a basic component for ensuring corrosion resistance and high-temperature strength. As described above, in the present invention, it is allowed to contain Cr in the range of 17 to 30%. However, in a place where the corrosion thinning is severe, 23 to 30% of Cr is considered in consideration of corrosion resistance. 18 to 23% Cr in consideration of cost and dilution with the base material in places with relatively little corrosion loss 18 It is recommended to use Cr-based materials.
- the Cr content is preferably set to 23 to 17%.
- Ni is an austenite forming element like C and Mn.
- Cr is in the range of 17% to 30%, when Ni is added excessively, a martensite structure is generated, and the structure is hardened and the bending characteristics cannot be obtained. Therefore, it was set to 0.5% or less.
- Nb combines with C to form fine and stable precipitates (carbides), and reduces the size of the weld metal crystal grains to 1 ⁇ m or less. Good bending characteristics and toughness can be obtained by refining the crystal grains.
- Nb is related to the welding workability (melt pool flow, arc stability, etc.), and when added in excess of 1.5%, the welding workability is significantly reduced.
- the content of Nb is set to 0.6 to 1.5%.
- the preferred amount of Nb is 0.7 to: L. 3%.
- the above-mentioned materials of the present invention may contain one or two of A1; 0.03 to 0.15% and Ti; 0.08 to 0.18%.
- a 1 serves as a deoxidizing agent and also contributes to the refinement of crystal grains together with N b.
- the ratio is less than 0.03%, the crystal grains of the weld metal become coarse, and good bending characteristics cannot be obtained.
- it exceeds 0.15% the amount of slag in the molten pool is large, and the flow of molten metal deteriorates, deteriorating welding workability. Therefore, it was set to 0.03 to 0.15%.
- Ti also acts as a deoxidizing agent like A1, and together with Nb, contributes to the refinement of crystal grains.
- D 1 the content of D 1 is less than 0.08%, the crystal grains of the weld metal become coarse and good bending properties cannot be obtained.
- the ratio of the porcelain exceeds 0.18%, there is much slag in the molten pool, and the flow of molten metal deteriorates, deteriorating the welding workability. Therefore, it was set to 0.08 to 0.18%.
- the welding metal using the powder material for powder plasma overlay welding of the present invention described above is as follows: C: 0.06 to 0.15%, Si: 0.2 to 1.0%, Mn: 0.2. To 1.0%, Cr; 17 to 30%, Nb; 0.6 to: 1.5%, Ni; 0.
- Example 2 the balance is composed of Fe and unavoidable impurities, and the crystal grain size is as fine as 100 ⁇ m or less, so that it has excellent corrosion resistance and excellent bending properties.
- Example 3 the balance is composed of Fe and unavoidable impurities, and the crystal grain size is as fine as 100 ⁇ m or less, so that it has excellent corrosion resistance and excellent bending properties.
- Powder plasma cladding was performed as described above using alloy powder materials (particle sizes 63 to 500/111) having the chemical compositions shown in Table 3. Table 3 shows the results of each evaluation and test. Table 3
- No. 1 in Table 3 —:! The test materials of No. 1 to No. 5 are examples satisfying the requirements of the present invention, and good results are obtained in both welding workability and bending characteristics.
- No. 1-6 to No. 1-13 are comparative examples lacking any of the specified requirements of the present invention.
- No. 1-4 is the SUS304 base metal used in the corrosion test described later, and
- No. 1-15 is the conventional 18Cr overlay material (all weld metal components of the MAG welding wire). It is.
- No. 1-6 has a C content of 0.17%, which exceeds the upper limit of the present invention, so that the weld metal structure is extremely hardened and the bending properties are poor.
- No. 1-7 has a Si content of 1.40%, which exceeds the upper limit of the present invention, so that toughness is reduced and bending properties are poor.
- No. 1 — 8 has an Mn content of 1.51%, exceeding the upper limit of the present invention. As a result, the weld metal structure hardens and the toughness decreases, resulting in poor bending properties.
- No. 10 and No. 1 — 1 1! [1] exceeds the upper limit of the present invention, the structure is hardened remarkably, and does not have good bending properties.
- the content of Nb is below 0.42 ⁇ 1 ⁇ 2, which is lower than the lower limit of the present invention, and the crystal grains are coarsened and good bending characteristics cannot be obtained.
- the content of Nb in No. 1-13 was 1.70%, exceeding the upper limit of the present invention, so that a large amount of fumes were generated during welding and the welding workability was significantly reduced. .
- Corrosion tests and dilution rates were evaluated for the test materials No. 1-1, 1-3, 1-14 and 1-15 described above.
- Corrosion test as shown in FIG. 5, by immersing the sample material 35 during the grinding smelt 3 3 of the crucible 3 in 1, test gas (1% SO 2 - 2% O 2 - 1 5% CO 2 - N 2 bal) to 400. C was flowed for 100 hours, and the amount of corrosion loss after that was measured. The smelt collected from the actual machine was used as the attached ash to be attached to the test material 35 during the corrosion test. Further, as shown in FIG.
- the dilution ratio was calculated by calculating the area a of the weld metal 43 on the base metal 41 and the area b of the weld metal 43 diffused in the base metal 41 in the cross section of the test material.
- Table 4 shows the corrosion test results and dilution ratio. Due to the dilution with the base metal, the Cr content of the overlay weld metal further decreased, and the Cr content of No. 1-1 and NO. 1-3 became 14.6% and 16.0%, respectively. Was. Conventional 18 Cr overlay material Because of the MAG welding method, a certain No. 1-15 had a higher dilution ratio than the powder plasma overlay welding method, and the Cr content of the single-layer overlay welding metal was 14.0%. . Table 4
- the amount of corrosion thinning depends only on the amount of Cr, and that the amount of corrosion thinning does not change even if other elements are increased or decreased.Therefore, in the following examples, A 1 and T i Although some are added, it is judged that the corrosion resistance does not change by the addition of these elements.
- the present invention provides an unprecedented excellent powder plasma overlay welding material, and as a result, achieves high efficiency in the overlay welding of the furnace evaporation tube of the recovery boiler.
- the dilution rate is smaller than that of the conventional MAG welding method, and high-quality overlay welding can be performed.
- Powder plasma cladding was performed using an alloy powder material (particle diameter 63 to 500 m) having the chemical composition shown in Table 5. Table 5 shows the results of each evaluation and test.
- test materials of No. 2-1 to ⁇ 2-5 in Table 5 are examples satisfying the requirements of the present invention, and good results are obtained in both welding workability and bending characteristics.
- N o. 2- 6 are significantly coarsened crystal grains because the lower limit of the present invention the content of A 1, c nor good bending properties are obtained
- N o. 2- 7 is A 1 exceeds the upper limit, and the flow of molten metal in the molten pool is poor, and thus the welding workability is poor.
- Powder plasma cladding was performed using an alloy powder material (particle diameter 63 to 500 ⁇ ) having the chemical composition shown in Table 6. Table 6 shows the results of each evaluation and test.
- test materials No. 3—l to No. 3—5 in Table 6 are examples satisfying the requirements of the present invention, and good results were obtained in both welding workability and bending characteristics. Have been. On the other hand, in the case of No. 3-6, T i exceeds the upper limit, the slag amount is large and the flow of molten metal in the molten pool is poor, and therefore the welding workability is poor. Table 6
- Front bending is 6 (T is acceptable if it is above.
- Powder plasma cladding was performed using an alloy powder material (particle size 63 to 500 m) having the chemical composition shown in Table 7. Table 7 shows the results of each evaluation and test.
- test materials of No. 4—l to No. 4—5 in Table 7 are examples satisfying the requirements of the present invention, and all have a bending angle of 180 ° and have excellent bending characteristics. Indicated.
- Example 4 Comparing Example 4 with Example 2 (addition of only A1) and Example 3 (addition of only Ti), it was found that the composite addition of A1 and Ti was more effective than the case where each was added alone. It can be seen that a good bending angle can be obtained in the front bending test.
- Powder plasma cladding was performed using an alloy powder material (particle diameter 63 to 500 m) having the chemical composition shown in Table 8. Table 8 shows the results of each evaluation and test. For some test materials, the same corrosion test and dilution ratio evaluation as in Example 1 were performed.
- the test materials of No. 5 to No. 5-5 are examples that satisfy the requirements of the present invention, and good results are obtained in both welding workability and bending characteristics.
- No. 5-6 to No. 5-13 correspond to any of the present invention. It is a comparative example lacking any of the prescribed requirements.
- No. 5-14 is the SUS310 comparative base material used for the corrosion test
- No.5-15 is the SUS304 comparative base material
- NO.5-16 is the conventional 18Cr.
- Overlay material all weld metal components of MAG welding wire. Table 8
- ⁇ up is t to pass more than 60 °
- Table 9 shows the corrosion test results.
- the Cr content of the overlay weld metal is lower than the dilution with the base metal, and the weld overlay metal of No. 5-1 and No. 5-3 has a Cr content of 21.2%, respectively. It was 22.0%.
- Table 9 shows that the No. 5-1 and No. 5-3 single-layer weld-weld metals of the invention material of the present invention are almost the same as the comparative base metal of SUS310 (25Cr-20Ni). Endurance It has excellent corrosion resistance as compared with the conventional 18 Cr welding material of No. 5—16. Table 9
- the amount of corrosion loss depends only on the amount of Cr and that the amount of corrosion loss does not change even if other elements are increased or decreased.Therefore, in the following examples, A 1, T i Some elements are added, but it is determined that the addition of these elements does not change the corrosion resistance.
- the present invention provides an unprecedented and excellent powder plasma overlay welding material, and as a result, achieves high efficiency in the overlay welding of the furnace evaporation tube of the recovery boiler.
- the dilution rate is smaller than that of the conventional MAG welding method, and high quality overlay welding can be performed.
- the rate of thinning of the furnace tube by smelt can be slowed down, and a longer life can be achieved.
- test materials of No. 6-1 to ⁇ . 6-5 in Table 10 are examples satisfying the requirements of the present invention, and good results were obtained in both welding workability and bending characteristics.
- the content of A 1 is less than the lower limit of the present invention, and the crystal grains are remarkably coarsened, so that good bending characteristics cannot be obtained.
- a 1 exceeds the upper limit, and the flow of molten metal in the molten pool becomes poor, and thus the welding workability is poor.
- Powder plasma cladding was performed using alloy powder materials (particle diameter 63-500 ⁇ ) having the chemical composition shown in Table 11.
- Table 11 shows the results of each evaluation and test, and Table 11 shows No. 7— :!
- the test materials of No. 7 to No. 7-5 are examples satisfying the requirements of the present invention, and good results are obtained in both welding workability and bending characteristics.
- T i exceeds the upper limit, the amount of slag is large, the flow of molten metal in the molten pool is poor, and thus the welding workability is poor ( Table 11
- Front bending shall be 60 ° or more.
- Powder plasma cladding was performed using alloy powder materials (particle diameter 63 to 500 / zm) having the chemical compositions shown in Table 12. The results of each evaluation and test are shown in Table 12.
- test materials of No. 8 to No. 5 are examples satisfying the stipulated requirements of the present invention, and all had a bending angle of 180 degrees and exhibited excellent bending characteristics.
- Example 8 Comparing Example 8 with Example 6 (adding only A1) and Example 7 (adding only Ti), it was found that the composite addition of A1 and Ti was more effective than the case where each was added alone. It can be seen that a good bending angle can be obtained in the front bending test.
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Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR9907047-2A BR9907047A (pt) | 1998-10-13 | 1999-10-12 | Material em pó para soldagem de estruturação com plasma em pó e metal formado por soldagem de estruturação com plasma em pó |
EP99970349A EP1040890B1 (en) | 1998-10-13 | 1999-10-12 | Powder material for powder plasma overlaying and powder plasma overlaying metal |
CA002314325A CA2314325C (en) | 1998-10-13 | 1999-10-12 | Powder material for powder plasma build-up welding and metal formed by powder plasma build-up welding |
US09/581,166 US6334977B1 (en) | 1998-10-13 | 1999-10-12 | Powder material for powder plasma overlaying and powder plasma overlaying metal |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29115098A JP3900230B2 (ja) | 1998-10-13 | 1998-10-13 | 粉体プラズマ肉盛溶接用粉末材料及び粉体プラズマ肉盛溶接金属 |
JP10/291150 | 1998-10-13 |
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WO2000021711A1 true WO2000021711A1 (fr) | 2000-04-20 |
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PCT/JP1999/005615 WO2000021711A1 (fr) | 1998-10-13 | 1999-10-12 | Materiau en poudre pour le recouvrement de plasma en poudre et metal de recouvrement du plasma en poudre |
Country Status (8)
Country | Link |
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US (1) | US6334977B1 (ja) |
EP (1) | EP1040890B1 (ja) |
JP (1) | JP3900230B2 (ja) |
CN (1) | CN1112980C (ja) |
BR (1) | BR9907047A (ja) |
CA (1) | CA2314325C (ja) |
ID (1) | ID26030A (ja) |
WO (1) | WO2000021711A1 (ja) |
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WO2006116844A1 (en) | 2005-05-02 | 2006-11-09 | National Research Council Of Canada | Method and apparatus for fine particle liquid suspension feed for thermal spray system and coatings formed therefrom |
US9050681B2 (en) * | 2007-03-02 | 2015-06-09 | Nippon Steel & Sumitomo Metal Corporation | Method of production of electric resistance welded steel pipe and high Si or high Cr electric resistance welded steel pipe |
JP5101601B2 (ja) * | 2007-03-12 | 2012-12-19 | 三菱重工業株式会社 | 弁装置 |
EP2650398B8 (de) * | 2012-04-11 | 2015-05-13 | Oerlikon Metco AG, Wohlen | Spritzpulver mit einer superferritischen Eisenbasisverbindung, sowie ein Substrat, insbesondere Bremsscheibe mit einer thermischen Spritzschicht |
CN103060797B (zh) * | 2013-01-14 | 2015-01-07 | 北京工业大学 | 一种等离子熔覆高熵合金涂层的制备方法 |
CN104611665B (zh) * | 2014-12-16 | 2018-05-11 | 广东省新材料研究所 | 一种在大尺寸弯管类工件上热喷涂制备涂层的方法 |
CN105821338A (zh) * | 2016-06-13 | 2016-08-03 | 苏州双金实业有限公司 | 一种能够耐高温的钢 |
JP7153488B2 (ja) * | 2018-07-09 | 2022-10-14 | 山陽特殊製鋼株式会社 | 肉盛用又は溶射用の粉末 |
EP3875631A4 (en) * | 2018-11-02 | 2022-02-23 | Nissan Motor Co., Ltd. | SLIDING ELEMENT THERMAL SPRAY COATING AND SLIDE DEVICE PROVIDED WITH SAID SLIDING ELEMENT THERMAL SPRAY COATING |
EP4008471A1 (de) * | 2020-12-02 | 2022-06-08 | Fronius International GmbH | Verfahren und schweissvorrichtung mit detektion von elektrischen kontakten bei einem schweissprozess |
CN112626517A (zh) * | 2020-12-15 | 2021-04-09 | 赣州乾屹铭金属材料有限公司 | 一种采用等离子熔覆的高性能搅拌叶片生产工艺 |
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-
1998
- 1998-10-13 JP JP29115098A patent/JP3900230B2/ja not_active Expired - Fee Related
-
1999
- 1999-10-12 ID IDW20001363A patent/ID26030A/id unknown
- 1999-10-12 WO PCT/JP1999/005615 patent/WO2000021711A1/ja active IP Right Grant
- 1999-10-12 CN CN99801813A patent/CN1112980C/zh not_active Expired - Fee Related
- 1999-10-12 EP EP99970349A patent/EP1040890B1/en not_active Expired - Lifetime
- 1999-10-12 BR BR9907047-2A patent/BR9907047A/pt not_active IP Right Cessation
- 1999-10-12 CA CA002314325A patent/CA2314325C/en not_active Expired - Fee Related
- 1999-10-12 US US09/581,166 patent/US6334977B1/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58141890A (ja) * | 1982-02-15 | 1983-08-23 | Kobe Steel Ltd | クロム系ステンレス被覆ア−ク溶接棒 |
JPS6471596A (en) * | 1987-09-09 | 1989-03-16 | Kubota Ltd | Composite welding material for cladding by plasma powder welding |
JPH1099990A (ja) * | 1996-09-27 | 1998-04-21 | Mitsubishi Heavy Ind Ltd | 25Cr肉盛溶接用被覆アーク溶接棒 |
Non-Patent Citations (1)
Title |
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See also references of EP1040890A4 * |
Also Published As
Publication number | Publication date |
---|---|
US6334977B1 (en) | 2002-01-01 |
CA2314325C (en) | 2003-06-17 |
BR9907047A (pt) | 2000-10-10 |
CA2314325A1 (en) | 2000-04-20 |
JP3900230B2 (ja) | 2007-04-04 |
EP1040890B1 (en) | 2007-03-21 |
CN1287518A (zh) | 2001-03-14 |
JP2000117485A (ja) | 2000-04-25 |
CN1112980C (zh) | 2003-07-02 |
ID26030A (id) | 2000-11-16 |
EP1040890A1 (en) | 2000-10-04 |
EP1040890A4 (en) | 2004-08-11 |
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