CN113529005A - Spraying manufacturing method of continuous casting roller - Google Patents
Spraying manufacturing method of continuous casting roller Download PDFInfo
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- CN113529005A CN113529005A CN202110768176.1A CN202110768176A CN113529005A CN 113529005 A CN113529005 A CN 113529005A CN 202110768176 A CN202110768176 A CN 202110768176A CN 113529005 A CN113529005 A CN 113529005A
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- 238000005507 spraying Methods 0.000 title claims abstract description 66
- 238000009749 continuous casting Methods 0.000 title claims abstract description 54
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 239000010410 layer Substances 0.000 claims abstract description 43
- 239000011248 coating agent Substances 0.000 claims abstract description 33
- 238000000576 coating method Methods 0.000 claims abstract description 33
- 239000000843 powder Substances 0.000 claims abstract description 26
- 239000000956 alloy Substances 0.000 claims abstract description 18
- 239000002344 surface layer Substances 0.000 claims abstract description 16
- 230000007704 transition Effects 0.000 claims abstract description 16
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 14
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical group [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910001120 nichrome Inorganic materials 0.000 claims abstract description 12
- 239000000758 substrate Substances 0.000 claims abstract description 12
- 230000037452 priming Effects 0.000 claims abstract description 10
- 239000002131 composite material Substances 0.000 claims abstract description 9
- 238000003801 milling Methods 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 238000005422 blasting Methods 0.000 claims abstract description 4
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- 238000010285 flame spraying Methods 0.000 claims abstract description 4
- 238000003754 machining Methods 0.000 claims abstract description 4
- 238000005488 sandblasting Methods 0.000 claims abstract description 4
- 239000007921 spray Substances 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 239000003350 kerosene Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 19
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000005266 casting Methods 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
Classifications
-
- 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
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/129—Flame spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/058—Alloys based on nickel or cobalt based on nickel with chromium without Mo and W
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/067—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds comprising a particular metallic binder
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/08—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each 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
- C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
-
- 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
-
- 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
- C23C4/08—Metallic material containing only metal elements
-
- 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
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/14—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying for coating elongate 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
- C23C4/18—After-treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
The invention discloses a spraying manufacturing method of a continuous casting roller, which comprises the following specific steps: (1) rough machining; (2) flaw detection; (3) processing before spraying: the whole body is round and bright by adopting a cutting mode, and the size of a spraying layer is reserved; then performing secondary processing on the thread milling cutter; (4) pretreatment before spraying: pretreating the surface to be sprayed by sand blasting and shot blasting; (5) spraying: preparing a composite coating on a substrate by adopting a flame spraying process; (6) and (5) processing after spraying. Wherein the composite coating on the surface of the continuous casting roller consists of a bottom layer, a transition layer and a surface layer; wherein the priming coat is Ni-based alloy powder, and the thickness of the coat is 0.05-0.1 mm; the transition layer is NiCr alloy powder, and the thickness of the coating is 0.2-0.3 mm; the surface layer is Ni-based carbide powder, and the thickness of the coating is 0.05-0.1 mm. The spraying manufacturing method can prepare the coating meeting the use requirement of the continuous casting roller by matching the spraying process and the coating material, thereby prolonging the service life of the connecting roller and improving the production efficiency of the continuous casting machine.
Description
Technical Field
The invention relates to the field of metallurgical industry, in particular to a method for spraying the surface of a continuous casting roller.
Background
The continuous casting production line is that the molten steel is coagulated into steel billets by a crystallizer, and the steel billets are maintained to move at a constant speed by a horizontal section consisting of pulling and straightening rollers after being pulled to be horizontal by an arc-shaped area channel consisting of closely-arranged continuous casting rollers. Therefore, the induction device (main body of continuous casting machine) composed of continuous casting rolls plays a role in supporting and guiding the casting track, and the working conditions are very harsh, especially the crystallizer and the bending section continuous casting roll, the surface of the continuous casting roll is directly contacted with the steel billet at about 1200 ℃, and the circumferential cracking caused by thermal fatigue is very serious due to the spray cooling of cooling water.
The traditional manufacturing process for strengthening the surface of the continuous casting roller is open arc or submerged arc welding, and the strengthening is carried out by adopting a mode of combining a bottom layer and a working layer, and the defects are as follows: firstly, the adhesion force between the surfacing layer and the substrate is poor, and the surfacing layer is easy to fall off from the substrate in the working process; secondly, the hardness of the overlaying layer is HRC40-45, the lower hardness ensures that the service life of the continuous casting roller is short, and when the steel passing amount reaches 25-30 ten thousand tons, the overlaying layer has cracks and the continuous casting roller needs to be replaced. The large number of casting rolls is a major consumable part of a continuous casting plant. Therefore, the service life of the continuous casting roll directly affects the production efficiency, casting blank cost and surface quality of the continuous casting machine, and a new manufacturing process is urgently needed to be developed so as to further prolong the service life of the continuous casting roll.
Disclosure of Invention
The invention aims to solve the problem of providing a spraying manufacturing method of a continuous casting roller, and the coating meeting the use requirement of the continuous casting roller can be prepared by matching a spraying process and a coating material, so that the service life of a connecting roller is prolonged, and the production efficiency of a continuous casting machine is improved.
The invention relates to a spray manufacturing method of a continuous casting roller, which comprises the following specific steps:
(1) rough machining: cleaning and polishing the surface to be repaired of the continuous casting roller;
(2) flaw detection: flaw detection is carried out on the roll surface of the continuous casting roll to be repaired;
(3) processing before spraying: the whole body is round and bright by adopting a cutting mode, and the size of a spraying layer is reserved; then performing secondary processing on the thread milling cutter;
(4) pretreatment before spraying: pretreating the surface to be sprayed by sand blasting and shot blasting;
(5) spraying: preparing a composite coating on a substrate by adopting a flame spraying process;
(6) and (3) processing after spraying: and grinding according to the roughness of the finished continuous casting roll.
Further, processing before spraying in the step (3): after the thread milling cutter is processed, a groove with the thickness of 0.05-0.1mm is formed on the surface of the continuous casting roller to be repaired.
Further, spraying in the step (5): the composite coating on the surface of the continuous casting roller consists of a bottom layer, a transition layer and a surface layer; wherein the priming coat is Ni-based alloy powder, and the thickness of the coat is 0.05-0.1 mm; the transition layer is NiCr alloy powder, and the thickness of the coating is 0.2-0.3 mm; the surface layer is Ni-based carbide powder, and the thickness of the coating is 0.05-0.1 mm.
Further, spraying in the step (5): the granularity of the bottom layer Ni-based alloy powder is 15-45 um, wherein the mass ratio of Ni to Cr is 4:1, and the balance is 1-3% of Si and 1-2% of Mn; the particle size of the NiCr alloy powder of the transition layer is 15-45 um, wherein the mass ratio of NiCr to CrC is 3: 1; the granularity of the surface layer Ni-based carbide powder is 5-30 um, and the main components are as follows: 40-60% of WC, 5-15% of Cr, 4-6% of Mo, 1-2% of Nb, 1-2% of Si and the balance of Ni.
Further, spraying in the step (5): the technological parameters during spraying are as follows: the oxygen flow is 850-950L/min, the kerosene flow is 0.4-0.5L/min, the spraying distance is 350-400mm, and the powder delivery amount is 50-100 g/min.
Further, the prepared coating has a thickness of 0.3-0.5 mm.
The spraying manufacturing method of the invention has the advantages that: 1. the thread milling cutter is adopted for processing before spraying, so that uniform grooves are formed on the surface of the matrix, and the bonding strength of the coating and the matrix is increased; 2. the continuous casting roller surface composite coating is composed of a bottoming layer, a transition layer and a surface layer, and the three layers are made of different materials: the priming layer is made of Ni-based alloy material, so that the advantage of good wettability of the nickel-based material is fully utilized, the bonding strength between the priming layer and the substrate is high, and the coating is not easy to fall off from the substrate; the NiCr alloy is used as a transition layer, so that the hardness is improved while the bonding strength is ensured; the surface layer is made of WC material, so that the wear resistance of the coating can be further improved, and the service life of the coating is greatly prolonged; during the spraying process, the powder is in a semi-molten state, so that the bonding strength among the priming layer, the transition layer and the surface layer is high. The hardness of the spray coating of the continuous casting roller obtained by the spray coating manufacturing method is HRC60-65, the used steel consumption of the continuous casting roller of the spray coating process is more than 50 ten thousand tons, namely, the service life of the continuous casting roller is prolonged by nearly one time compared with the service life of the continuous casting roller of the existing welding layer, and the production efficiency of a continuous casting machine is improved. Therefore, the spraying manufacturing method has the advantages of production efficiency and cost.
Detailed Description
The invention relates to a spray manufacturing method of a continuous casting roller, which comprises the following specific steps:
(1) rough machining: cleaning and polishing the surface to be repaired of the continuous casting roller;
(2) flaw detection: flaw detection is carried out on the roll surface of the continuous casting roll to be repaired;
(3) processing before spraying: the whole body is round and bright by adopting a cutting mode, and the size of a spraying layer is reserved; then performing secondary processing on the thread milling cutter;
(4) pretreatment before spraying: pretreating the surface to be sprayed by sand blasting and shot blasting;
(5) spraying: preparing a composite coating on a substrate by adopting a flame spraying process;
(6) and (3) processing after spraying: and grinding according to the roughness of the finished continuous casting roll.
Wherein, the step (3) is processed before spraying: after the thread milling cutter is processed, a groove with the thickness of 0.05-0.1mm is formed on the surface of the continuous casting roller to be repaired.
The spraying process has the advantages that the thread milling cutter is adopted for processing before spraying, so that uniform grooves are formed on the surface, the bonding strength of the coating and the substrate is increased, and the coating cannot fall off from the substrate.
Wherein, the step (5) is spraying: the composite coating on the surface of the continuous casting roller consists of a bottom layer, a transition layer and a surface layer; wherein the priming coat is Ni-based alloy powder, and the thickness of the coat is 0.05-0.1 mm; the transition layer is NiCr alloy powder, and the thickness of the coating is 0.2-0.3 mm; the surface layer is Ni-based carbide powder, and the thickness of the coating is 0.05-0.1 mm.
The priming layer is made of Ni-based alloy material, so that the advantage of good wettability of the nickel-based material is fully utilized, the bonding strength between the priming layer and the substrate is high, and the coating is not easy to fall off from the substrate; the transition layer is made of NiCr alloy material, so that the hardness is improved while the bonding strength is ensured; the surface layer is made of Ni-based carbide material, so that the wear resistance of the coating can be further improved, and the service life of the coating is greatly prolonged.
Wherein, the step (5) is spraying: the granularity of the bottom layer Ni-based alloy powder is 15-45 um, wherein the mass ratio of Ni to Cr is 4:1, and the balance is 1-3% of Si and 1-2% of Mn; the particle size of the NiCr alloy powder of the transition layer is 15-45 um, wherein the mass ratio of NiCr to CrC is 3: 1; the granularity of the surface layer Ni-based carbide powder is 5-30 um, and the main components are as follows: 40-60% of WC, 5-15% of Cr, 4-6% of Mo, 1-2% of Nb, 1-2% of Si and the balance of Ni.
Wherein, the step (5) is spraying: the technological parameters during spraying are as follows: the oxygen flow is 850-950L/min, the kerosene flow is 0.4-0.5L/min, the spraying distance is 350-400mm, and the powder delivery amount is 50-100 g/min.
During the spraying process, the powder is in a semi-molten state, so that the bonding strength among the priming layer, the transition layer and the surface layer is high.
The hardness of the spray coating of the continuous casting roller obtained by the spray coating manufacturing method is HRC60-65, the used steel consumption of the continuous casting roller of the spray coating process is more than 50 ten thousand tons, namely, the service life of the continuous casting roller is nearly doubled compared with that of the continuous casting roller of the existing welding layer, and the production efficiency of a continuous casting machine is improved. Therefore, the spraying manufacturing method has the advantages of production efficiency and cost.
In a word, the spraying manufacturing method can obtain a high-abrasion-resistance and corrosion-resistance coating, thereby prolonging the service life of the continuous casting roller and improving the production efficiency, the casting blank cost and the surface quality of a continuous casting machine.
Claims (6)
1. A spray coating manufacturing method of a continuous casting roller comprises the following specific steps:
(1) rough machining: cleaning and polishing the surface to be repaired of the continuous casting roller;
(2) flaw detection: flaw detection is carried out on the roll surface of the continuous casting roll to be repaired;
(3) processing before spraying: the whole body is round and bright by adopting a cutting mode, and the size of a spraying layer is reserved; then performing secondary processing on the thread milling cutter;
(4) pretreatment before spraying: pretreating the surface to be sprayed by sand blasting and shot blasting;
(5) spraying: preparing a composite coating on a substrate by adopting a flame spraying process;
(6) and (3) processing after spraying: and grinding according to the roughness of the finished continuous casting roll.
2. The spray repair method according to claim 1, wherein:
and (3) processing before spraying: after the thread milling cutter is processed, a groove with the thickness of 0.05-0.1mm is formed on the surface of the continuous casting roller to be repaired.
3. The spray coating manufacturing method according to claim 1, wherein:
step (5), spraying: the composite coating on the surface of the continuous casting roller consists of a bottom layer, a transition layer and a surface layer; wherein the priming coat is Ni-based alloy powder, and the thickness of the coat is 0.05-0.1 mm; the transition layer is NiCr alloy powder, and the thickness of the coating is 0.2-0.3 mm; the surface layer is Ni-based carbide powder, and the thickness of the coating is 0.05-0.1 mm.
4. The spray coating manufacturing method according to claim 3, wherein:
step (5), spraying: the granularity of the bottom layer Ni-based alloy powder is 15-45 um, wherein the mass ratio of Ni to Cr is 4:1, and the balance is 1-3% of Si and 1-2% of Mn; the particle size of the NiCr alloy powder of the transition layer is 15-45 um, wherein the mass ratio of NiCr to CrC is 3: 1; the granularity of the surface layer Ni-based carbide powder is 5-30 um, and the main components are as follows: 40-60% of WC, 5-15% of Cr, 4-6% of Mo, 1-2% of Nb, 1-2% of Si and the balance of Ni.
5. The spray coating manufacturing method according to claim 1, wherein:
step (5), spraying: the technological parameters during spraying are as follows: the oxygen flow is 850-950L/min, the kerosene flow is 0.4-0.5L/min, the spraying distance is 350-400mm, and the powder delivery amount is 50-100 g/min.
6. The spray coating manufacturing method according to claims 1 to 5, characterized in that: the thickness of the prepared coating is 0.3-0.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110768176.1A CN113529005A (en) | 2021-07-05 | 2021-07-05 | Spraying manufacturing method of continuous casting roller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110768176.1A CN113529005A (en) | 2021-07-05 | 2021-07-05 | Spraying manufacturing method of continuous casting roller |
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| Publication Number | Publication Date |
|---|---|
| CN113529005A true CN113529005A (en) | 2021-10-22 |
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| CN202110768176.1A Pending CN113529005A (en) | 2021-07-05 | 2021-07-05 | Spraying manufacturing method of continuous casting roller |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113913722A (en) * | 2021-09-23 | 2022-01-11 | 泰尔(安徽)工业科技服务有限公司 | Surface composite coating of mandrel for rolling seamless steel tube and preparation method thereof |
| CN114921743A (en) * | 2022-05-23 | 2022-08-19 | 广东粤科新材料科技有限公司 | Method for prolonging service life of pressure chamber and injection head of die-casting machine by using composite coating |
| CN115369347A (en) * | 2022-08-05 | 2022-11-22 | 东风商用车有限公司 | Method for improving bonding strength of heat-insulating coating and matrix of engine combustion chamber |
| CN115870195A (en) * | 2022-10-31 | 2023-03-31 | 山东北溟科技有限公司 | Marine shaft part repairing and remanufacturing process |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19959515A1 (en) * | 1999-12-09 | 2001-06-13 | Dacs Dvorak Advanced Coating S | Process for plastic coating by means of a spraying process, a device therefor and the use of the layer |
| US20050266136A1 (en) * | 2004-06-01 | 2005-12-01 | Yukata Mfg. Co., Ltd | Roller for forming noodles and the like |
| CN101798669A (en) * | 2009-02-06 | 2010-08-11 | 上海宝钢设备检修有限公司 | Method for thermally spraying protective coating on surface of copper plate of continuous casting crystallizer |
| CN104384861A (en) * | 2014-11-12 | 2015-03-04 | 中国矿业大学 | Method for manufacturing abrasion-proof conveying roll with high-temperature erosion resistance |
| CN107868926A (en) * | 2017-11-20 | 2018-04-03 | 中国科学院兰州化学物理研究所 | A kind of preparation method of the anti-sticking wear-resisting coating of high temperature lubricating |
| CN109576628A (en) * | 2017-09-25 | 2019-04-05 | 上海宝钢工业技术服务有限公司 | The preparation method of continuous cast mold long side copper sheet composite coating |
-
2021
- 2021-07-05 CN CN202110768176.1A patent/CN113529005A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19959515A1 (en) * | 1999-12-09 | 2001-06-13 | Dacs Dvorak Advanced Coating S | Process for plastic coating by means of a spraying process, a device therefor and the use of the layer |
| US20050266136A1 (en) * | 2004-06-01 | 2005-12-01 | Yukata Mfg. Co., Ltd | Roller for forming noodles and the like |
| CN101798669A (en) * | 2009-02-06 | 2010-08-11 | 上海宝钢设备检修有限公司 | Method for thermally spraying protective coating on surface of copper plate of continuous casting crystallizer |
| CN104384861A (en) * | 2014-11-12 | 2015-03-04 | 中国矿业大学 | Method for manufacturing abrasion-proof conveying roll with high-temperature erosion resistance |
| CN109576628A (en) * | 2017-09-25 | 2019-04-05 | 上海宝钢工业技术服务有限公司 | The preparation method of continuous cast mold long side copper sheet composite coating |
| CN107868926A (en) * | 2017-11-20 | 2018-04-03 | 中国科学院兰州化学物理研究所 | A kind of preparation method of the anti-sticking wear-resisting coating of high temperature lubricating |
Non-Patent Citations (1)
| Title |
|---|
| 张平 主编: "《热喷涂材料》", 31 January 2006, 国防工业出版社, pages: 261 - 265 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113913722A (en) * | 2021-09-23 | 2022-01-11 | 泰尔(安徽)工业科技服务有限公司 | Surface composite coating of mandrel for rolling seamless steel tube and preparation method thereof |
| CN114921743A (en) * | 2022-05-23 | 2022-08-19 | 广东粤科新材料科技有限公司 | Method for prolonging service life of pressure chamber and injection head of die-casting machine by using composite coating |
| CN115369347A (en) * | 2022-08-05 | 2022-11-22 | 东风商用车有限公司 | Method for improving bonding strength of heat-insulating coating and matrix of engine combustion chamber |
| CN115870195A (en) * | 2022-10-31 | 2023-03-31 | 山东北溟科技有限公司 | Marine shaft part repairing and remanufacturing process |
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