CN114717490A - Preparation and detection method of amorphous surfacing welding wire for high-temperature corrosion resistance of coal-fired boiler - Google Patents
Preparation and detection method of amorphous surfacing welding wire for high-temperature corrosion resistance of coal-fired boiler Download PDFInfo
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- CN114717490A CN114717490A CN202210359065.XA CN202210359065A CN114717490A CN 114717490 A CN114717490 A CN 114717490A CN 202210359065 A CN202210359065 A CN 202210359065A CN 114717490 A CN114717490 A CN 114717490A
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- 238000005260 corrosion Methods 0.000 title claims abstract description 50
- 230000007797 corrosion Effects 0.000 title claims abstract description 48
- 238000003466 welding Methods 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 238000001514 detection method Methods 0.000 title abstract description 7
- 229910000808 amorphous metal alloy Inorganic materials 0.000 claims abstract description 28
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000956 alloy Substances 0.000 claims abstract description 23
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 21
- 238000000576 coating method Methods 0.000 claims abstract description 18
- 239000011248 coating agent Substances 0.000 claims abstract description 16
- 239000011521 glass Substances 0.000 claims abstract description 13
- 229910052786 argon Inorganic materials 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 238000003723 Smelting Methods 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 239000010453 quartz Substances 0.000 claims abstract description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000005282 brightening Methods 0.000 claims abstract description 4
- 238000011049 filling Methods 0.000 claims abstract description 4
- 230000006698 induction Effects 0.000 claims abstract description 4
- 238000007790 scraping Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000004506 ultrasonic cleaning Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 13
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000005530 etching Methods 0.000 claims description 8
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 229910052750 molybdenum Inorganic materials 0.000 claims description 6
- 238000004513 sizing Methods 0.000 claims description 6
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 229910052717 sulfur Inorganic materials 0.000 claims description 5
- 239000011593 sulfur Substances 0.000 claims description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 238000011010 flushing procedure Methods 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052702 rhenium Inorganic materials 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 238000011534 incubation Methods 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 238000007670 refining Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000011068 loading method Methods 0.000 abstract description 3
- 238000004021 metal welding Methods 0.000 abstract description 2
- 239000011651 chromium Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052684 Cerium Inorganic materials 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 229910052746 lanthanum Inorganic materials 0.000 description 4
- 229910052761 rare earth metal Inorganic materials 0.000 description 4
- 238000005507 spraying Methods 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229910001309 Ferromolybdenum Inorganic materials 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229910001119 inconels 625 Inorganic materials 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 229910052706 scandium Inorganic materials 0.000 description 2
- 238000005987 sulfurization reaction Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000007832 Na2SO4 Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 150000003463 sulfur Chemical class 0.000 description 1
- -1 sulfur salt Chemical class 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C45/00—Amorphous alloys
- C22C45/02—Amorphous alloys with iron as the major 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
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
- B23K35/308—Fe as the principal constituent with Cr as next major constituent
- B23K35/3086—Fe as the principal constituent with Cr as next major constituent containing Ni or Mn
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/003—Making ferrous alloys making amorphous alloys
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/006—Investigating resistance of materials to the weather, to corrosion, or to light of metals
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- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
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Abstract
The invention belongs to a welding material for metal welding, and particularly relates to a preparation and detection method of an amorphous surfacing welding wire for high-temperature corrosion resistance of a coal-fired boiler. The method comprises the following steps: smelting the prepared raw materials by a high-frequency induction smelting furnace under the protection of argon to obtain alloy ingots with uniform components; crushing the smelted alloy ingot into blocks, loading the blocks into a glass container, connecting the container into a vacuum system, and drawing out glass-wrapped amorphous alloy wires through a traction wire; obtaining amorphous alloy wires; filling the obtained amorphous alloy wires into a quartz tube, vacuumizing, sealing and finally cooling to room temperature; and finally, passing the amorphous alloy wire through a scraping mould to perform surface brightening treatment and performing ultrasonic cleaning to obtain a finished product. The invention aims to use the high-temperature corrosion resistant alloy material as a high-temperature corrosion resistant alloy material with high cost performance, and is expected to be applied to the surface of the water cooled wall of the coal-fired boiler to prepare the corrosion resistant coating.
Description
Technical Field
The invention belongs to a welding material for metal welding, and particularly relates to a preparation and detection method of an amorphous surfacing welding wire for high-temperature corrosion resistance of a coal-fired boiler.
Background
In recent years, accidents causing failure of four pipes of a coal-fired boiler due to high-temperature creep, fly ash abrasion, corrosion fatigue and the like are common. According to data statistics, the boiler four-pipe accident accounts for about 2/3 of all boiler accidents. The accident causes are caused by high and low temperature corrosion, abrasion or hydrogen embrittlement of the pipe besides the defects of material quality control. The water wall tubes of coal-fired boilers are in the most complex of the four tubes of the furnace environment because of direct contact with the fuel coal. Therefore, corrosion and protection of water wall tubes of coal-fired boilers have been one of the hot spots studied by researchers.
Compared with the traditional metal material, the amorphous alloy has the structural characteristics of long-range disorder and short-range order, and the existence of the unique structure ensures that the amorphous material shows better excellent physical and chemical properties. The amorphous alloy mechanism has no defects such as crystal boundary, stacking fault and the like, and has no segregation and heterogeneous structure, so the amorphous alloy mechanism has excellent corrosion resistance.
Compared with the mechanical combination of a spray coating formed by metal spraying and a base metal, the surfacing layer formed after surfacing and the base metal are in metallurgical combination, and the combination strength is high; the degree of coverage of a general overlaying layer is 2-3mm, and the wear-resisting service life of the overlaying layer is 6-9 times that of a spraying layer; the research is just for the comprehensive consideration of cost and corrosion resistance to prepare the amorphous corrosion-resistant coating material with higher cost performance for the coal-fired boiler.
Disclosure of Invention
In order to realize the expected aim, the invention provides a preparation and detection method of an amorphous surfacing welding wire special for high-temperature corrosion resistance of a coal-fired boiler, which comprises the following chemical components in percentage by weight: 0.7 to 0.8 percent of C, 0.4 to 0.5 percent of Si, 23 to 25 percent of Cr, 2 to 3 percent of B, 0.4 to 0.7 percent of Mo, 12 to 14 percent of Ni, 0.03 percent of Re and the balance of Fe. And examining the sample of HDZ8000 welding wire at 650 ℃ under Na2SO4And K2SO4Corrosion behavior in corrosive media.
In order to achieve the purpose, the invention provides the following technical scheme:
a preparation method of an amorphous surfacing welding wire for high-temperature corrosion resistance of a coal-fired boiler comprises the following steps:
(1) smelting the prepared raw materials by using a high-frequency induction smelting furnace under the protection of argon, continuously refining for 10-20 minutes after the raw materials are completely molten, and finally cooling the alloy solution in a mold to obtain an alloy ingot with uniform components;
(2) crushing the smelted alloy ingot into blocks, loading the blocks into a glass container, connecting the container into a vacuum system, repeatedly vacuumizing for 2-3 times, filling argon into the container, simultaneously adjusting proper current to melt the alloy, and drawing out glass-wrapped amorphous alloy wires with the diameter of 1.2-1.4mm by using a drawing wire when glass in contact with the molten alloy is softened;
(3) carrying out glass removing and coating treatment on the glass-coated iron-based amorphous alloy wire for 1-5 minutes by using 35-45% hydrofluoric acid in mass fraction to obtain an amorphous alloy wire;
(4) placing the obtained amorphous alloy wires into a quartz tube, sealing, vacuumizing, placing the quartz tube in a heat treatment furnace, heating to 350-500 ℃, preserving heat for 15-30 minutes, and finally cooling to room temperature;
(5) drawing the amorphous alloy wire subjected to the heat treatment, sizing the amorphous alloy wire by passing through a sizing die, and finally, performing surface brightening treatment on the amorphous alloy wire by passing through a scraping die and performing ultrasonic cleaning to obtain a finished product.
Further, in the step (1) above: the chemical components of the raw materials are wt%: 0.7 to 0.8 percent of C, 0.4 to 0.5 percent of Si, 23 to 25 percent of Cr, 2 to 3 percent of B, 0.4 to 0.7 percent of Mo, 12 to 14 percent of Ni, 0.03 percent of Re and the balance of Fe.
Further, in the step (2) above: and flushing argon gas into the container, wherein the condition of flushing the argon gas is that one atmospheric pressure is adopted.
Further, in the step (3) above: the concentration of the hydrofluoric acid is preferably 40% by mass;
in the step (5) above: the diameter of the wire is phi 1.2 mm.
Further, in the step (4) above: the incubation time is preferably 20 minutes.
A detection method of an amorphous surfacing welding wire applied to high-temperature corrosion resistance of a coal-fired boiler comprises the following steps:
detecting the corrosion resistance behavior of the prepared amorphous surfacing welding wire in a molten salt corrosion environment; the oxygen-containing high-temperature sulfur corrosion environment is that the sample is subjected to Na under the temperature of 650 DEG C2SO4And K2SO4The etching time is 120 h for an etching medium.
Compared with the prior art, the invention has the advantages that:
the invention provides a high-temperature corrosion resistant amorphous surfacing welding wire which mainly comprises molybdenum, chromium and iron with relatively low cost, wherein trace rare earth elements are added to modify an alloy, and the rare earth element Re can improve the elongation and the reduction of area of deposited metal and remarkably improve the sulfuration corrosion resistance of the deposited metal. Wherein, La, Ce and Sc can improve the thermoplasticity of the ferromolybdenum alloy. In the present invention, Re is a combination of La and Ce. Compared with the traditional corrosion-resistant surfacing material Inconel625 for the water wall of the boiler, the amorphous surfacing material has the advantages of low cost, excellent high-temperature corrosion resistance and excellent wear resistance, and is suitable for wide industrial production.
Drawings
FIG. 1 is a graph of the post-etch topography of an amorphous coating in accordance with the present invention;
fig. 2 shows the etched profile of the QG45 coating in the conventional scheme.
Detailed Description
A preparation method of the high-temperature corrosion-resistant amorphous surfacing welding wire for the coal-fired boiler comprises the following steps:
the types of the welding wires are as follows: HDZ8000
(1) Smelting the prepared raw materials by a high-frequency induction smelting furnace under the protection of argon, refining for 10-20 minutes after the raw materials are completely molten, and finally cooling the alloy solution in a mould to obtain an alloy ingot with uniform components;
(2) crushing the smelted alloy ingot into blocks, loading the blocks into a glass container, connecting the container into a vacuum system, repeatedly vacuumizing for 2-3 times, filling argon into the container, adjusting appropriate current to melt the alloy, and drawing out glass-wrapped amorphous alloy wires with the diameter of 1.2-1.4mm by using a drawing wire when glass in contact with the molten alloy is softened;
(3) carrying out glass removing and coating treatment on the glass-coated amorphous alloy wire for 1-5 minutes by using 35-45% (mass fraction) hydrofluoric acid to obtain an amorphous alloy wire;
(4) putting the obtained amorphous alloy wires into a quartz tube, sealing, vacuumizing, putting the quartz tube into a heat treatment furnace, heating to 350-500 ℃, preserving heat for 15-30 minutes, and finally cooling to room temperature;
(5) drawing the amorphous alloy wire subjected to heat treatment, sizing the amorphous alloy wire by passing through a sizing die, performing surface brightening treatment on the amorphous alloy wire by passing through a scraping die, and performing ultrasonic cleaning to obtain a finished product.
Further, in the step (1) above: the chemical components of the raw materials are wt%: 0.7 to 0.8 percent of C, 0.4 to 0.5 percent of Si, 23 to 25 percent of Cr, 2 to 3 percent of B, 0.4 to 0.7 percent of Mo, 12 to 14 percent of Ni, 0.03 percent of Re and the balance of Fe.
Further, in the step (2) above: the condition is that argon gas adopts one atmosphere.
Further, in the step (3) above: the hydrofluoric acid adopts 40 percent (mass fraction)
Further, in the step (4) above: the incubation time was 20 minutes.
Further, in the step (5) above: the diameter of the wire is phi 1.2 mm.
A detection method for a high-temperature corrosion-resistant amorphous surfacing welding wire for a coal-fired boiler comprises the following steps: detecting the corrosion resistance behavior of the prepared amorphous surfacing welding wire in a molten salt corrosion environment;
the types of the welding wires are as follows: HDZ 8000;
the oxygen-containing high-temperature sulfur corrosion environment is that the sample is subjected to Na under the temperature of 650 DEG C2SO4+K2SO4The etching time is 120 h for an etching medium.
The high-temperature corrosion resistant amorphous surfacing welding wire is HDZ8000, the material mainly comprises molybdenum, chromium and iron with relatively low cost, the alloy is modified by adding trace rare earth elements, and the rare earth element Re can improve the elongation and the reduction of area of deposited metal and remarkably improve the sulfuration corrosion resistance of the deposited metal. Wherein, La, Ce and Sc can improve the thermoplasticity of the ferromolybdenum alloy. In the present invention, Re is a combination of La and Ce. Compared with the traditional corrosion-resistant surfacing material Inconel625 for the water wall of a boiler, the amorphous surfacing material has the advantages of low cost, excellent high-temperature corrosion resistance and excellent wear resistance, so that the amorphous surfacing material is suitable for wide industrial production.
Examples of the experiments
In the experiment, QG45 coating and the amorphous coating of the invention are selected to carry out molten salt experiment, and the experimental conditions are as follows: the sample is subjected to Na under the high-temperature sulfur corrosion environment of 650 DEG C2SO4And K2SO4The etching time is 120 h for etching medium.
The appearance of the sample after the experiment is shown in fig. 1 and fig. 2, wherein fig. 1 shows the appearance of the amorphous coating after corrosion; FIG. 2 shows the etched profile of the QG45 coating;
the amorphous coating of the invention has smooth surface and no obvious Fe after molten salt corrosion2O3And corrosion products such as FeS, and the like, and the surface of the QG45 coating is uneven after corrosion and has more pitting holes.
Table 1 shows the results of analysis of the sulfur salt corrosion resistance data for the two coatings. It can be concluded from the table that the corrosion rate of the amorphous coating is much lower than that of the QG45 coating and the oxidation rate is also lower than that of the QG45 coating.
Table 1: data analysis result of corrosion resistance of two coatings to coated sulfur salt
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. A preparation method of an amorphous surfacing welding wire for high-temperature corrosion resistance of a coal-fired boiler is characterized by comprising the following steps:
(1) smelting the prepared raw materials by using a high-frequency induction smelting furnace under the protection of argon, continuously refining for 10-20 minutes after the raw materials are completely molten, and finally cooling the alloy solution in a mold to obtain an alloy ingot with uniform components;
(2) crushing the smelted alloy ingot into blocks, putting the blocks into a glass container, putting the container into a vacuum system, repeatedly vacuumizing for 2-3 times, filling argon gas into the container, simultaneously adjusting appropriate current to melt the alloy, and drawing out a glass-wrapped amorphous alloy wire with the diameter of 1.2-1.4mm through a drawing wire when the glass contacting with the molten alloy is softened;
(3) carrying out glass removing and coating treatment on the glass-coated iron-based amorphous alloy wire for 1-5 minutes by using 35-45% hydrofluoric acid in mass fraction to obtain an amorphous alloy wire;
(4) placing the obtained amorphous alloy wires into a quartz tube, sealing, vacuumizing, placing the quartz tube in a heat treatment furnace, heating to 350-500 ℃, preserving heat for 15-30 minutes, and finally cooling to room temperature;
(5) drawing the amorphous alloy wire subjected to the heat treatment, sizing the amorphous alloy wire by passing through a sizing die, and finally, performing surface brightening treatment on the amorphous alloy wire by passing through a scraping die and performing ultrasonic cleaning to obtain a finished product.
2. The preparation method of the amorphous surfacing welding wire applied to the high-temperature corrosion resistance of the coal-fired boiler according to claim 1 is characterized by comprising the following steps:
in the above step (1): the chemical components of the raw material are as follows by weight percent: 0.7 to 0.8 percent of C, 0.4 to 0.5 percent of Si, 23 to 25 percent of Cr, 2 to 3 percent of B, 0.4 to 0.7 percent of Mo, 12 to 14 percent of Ni, 0.03 percent of Re and the balance of Fe.
3. The preparation method of the amorphous surfacing welding wire applied to the high-temperature corrosion resistance of the coal-fired boiler according to claim 1 is characterized by comprising the following steps of:
in the above step (2): and flushing argon gas into the container, wherein the condition of flushing the argon gas is that one atmospheric pressure is adopted.
4. The preparation method of the amorphous surfacing welding wire applied to the high-temperature corrosion resistance of the coal-fired boiler according to claim 1 is characterized by comprising the following steps of:
in the above step (3): the concentration of the hydrofluoric acid is 40% by mass;
in the above step (5): the diameter of the wire is phi 1.2 mm.
5. The preparation method of the amorphous surfacing welding wire applied to the high-temperature corrosion resistance of the coal-fired boiler according to claim 1 is characterized by comprising the following steps of:
in the above step (4): the incubation time was 20 minutes.
6. The method for detecting the amorphous surfacing welding wire applied to the high-temperature corrosion resistance of the coal-fired boiler according to claim 1 is characterized by comprising the following steps of:
detecting the corrosion resistance behavior of the prepared amorphous surfacing welding wire in a molten salt corrosion environment; the oxygen-containing high-temperature sulfur corrosion environment is that the sample is subjected to Na under the temperature of 650 DEG C2SO4And K2SO4The etching time is 120 h for an etching medium.
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| CN202210359065.XA CN114717490A (en) | 2022-04-07 | 2022-04-07 | Preparation and detection method of amorphous surfacing welding wire for high-temperature corrosion resistance of coal-fired boiler |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101709435A (en) * | 2009-11-20 | 2010-05-19 | 中国科学院宁波材料技术与工程研究所 | Cobalt base amorphous alloy wire and preparation method thereof |
| CN110004392A (en) * | 2019-03-21 | 2019-07-12 | 珠海弘德表面技术有限公司 | A kind of anti abrasive amorphous state thermal spraying material of high-temperature corrosion resistance |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101709435A (en) * | 2009-11-20 | 2010-05-19 | 中国科学院宁波材料技术与工程研究所 | Cobalt base amorphous alloy wire and preparation method thereof |
| CN110004392A (en) * | 2019-03-21 | 2019-07-12 | 珠海弘德表面技术有限公司 | A kind of anti abrasive amorphous state thermal spraying material of high-temperature corrosion resistance |
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