CN114990442B - High-speed laser resistant high-temperature wear-resistant material for core rod - Google Patents
High-speed laser resistant high-temperature wear-resistant material for core rod Download PDFInfo
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- CN114990442B CN114990442B CN202210646695.5A CN202210646695A CN114990442B CN 114990442 B CN114990442 B CN 114990442B CN 202210646695 A CN202210646695 A CN 202210646695A CN 114990442 B CN114990442 B CN 114990442B
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- 239000000463 material Substances 0.000 title claims abstract description 20
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 16
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims abstract description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 10
- 239000010955 niobium Substances 0.000 claims abstract description 10
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 10
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000012535 impurity Substances 0.000 claims abstract description 9
- 229910052779 Neodymium Inorganic materials 0.000 claims abstract description 8
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 7
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 7
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 7
- 239000011651 chromium Substances 0.000 claims abstract description 7
- 229910052742 iron Inorganic materials 0.000 claims abstract description 7
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims abstract description 7
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 7
- 239000011733 molybdenum Substances 0.000 claims abstract description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 7
- 239000011574 phosphorus Substances 0.000 claims abstract description 7
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 7
- 239000010703 silicon Substances 0.000 claims abstract description 7
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 7
- 239000011593 sulfur Substances 0.000 claims abstract description 7
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 7
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims description 27
- 238000005242 forging Methods 0.000 claims description 26
- 238000001816 cooling Methods 0.000 claims description 25
- 238000005496 tempering Methods 0.000 claims description 18
- 238000000137 annealing Methods 0.000 claims description 17
- 238000007670 refining Methods 0.000 claims description 14
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 10
- 238000003723 Smelting Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 238000010791 quenching Methods 0.000 claims description 9
- 230000000171 quenching effect Effects 0.000 claims description 9
- 238000000265 homogenisation Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000005266 casting Methods 0.000 claims description 6
- 229910052786 argon Inorganic materials 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 238000007796 conventional method Methods 0.000 description 7
- 238000006477 desulfuration reaction Methods 0.000 description 6
- 230000023556 desulfurization Effects 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 238000005261 decarburization Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/28—Normalising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/32—Soft annealing, e.g. spheroidising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
- C21D8/065—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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- Crystallography & Structural Chemistry (AREA)
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Abstract
The invention discloses a high-speed laser resistant high-temperature wear-resistant material for a core rod, which comprises 0.35-0.41% of carbon, 0.7-0.9% of silicon, 0.35-0.43% of manganese, less than 0.01% of sulfur, less than 0.01% of phosphorus, 5.2-5.8% of chromium, 1.62-1.75% of molybdenum, 1-1.2% of vanadium, 0.02-0.03% of niobium, 0.002-0.004% of neodymium, 0.03-0.06% of tantalum, 0.03-0.038% of cerium, and the balance of iron and inevitable impurities.
Description
Technical Field
The invention relates to the technical field of steel, in particular to a high-speed laser high-temperature resistant wear-resistant material for a core rod.
Background
The traditional core rod material is 4Cr5MoSiV1, in order to meet the use requirement, an improvement scheme of the traditional core rod material is disclosed in a patent document with an authorization publication number of CN101824580B, the strength, impact resistance and the like of the material are improved through the improvement of a formula composition and a special process, but the properties such as wear resistance and the like of the material cannot meet the use requirement of the core rod material, and further improvement is needed.
Disclosure of Invention
In order to solve at least one technical defect, the invention provides the following technical scheme:
the application document discloses a high-speed laser-resistant high-temperature wear-resistant material for a core rod, which comprises 0.35-0.41% of carbon, 0.7-0.9% of silicon, 0.35-0.43% of manganese, less than 0.01% of sulfur, less than 0.01% of phosphorus, 5.2-5.8% of chromium, 1.62-1.75% of molybdenum, 1-1.2% of vanadium, 0.02-0.03% of niobium, 0.002-0.004% of neodymium, 0.03-0.06% of tantalum, 0.03-0.038% of cerium, and the balance of iron and inevitable impurities.
Further, 0.025-0.028% of niobium, 0.042-0.048% of tantalum and 0.03-0.033% of cerium. The performance of the material is excellent at this ratio.
Further, the content of impurities is less than 0.3%.
Further, the preparation method of the material comprises the following steps:
firstly, carrying out primary smelting, refining and electroslag remelting casting by an electric furnace to form an electroslag ingot;
secondly, annealing treatment, namely heating the electroslag ingot to 900-950 ℃, preserving heat for 12-18h, and then cooling to 500-550 ℃ at the speed of 45-50 ℃;
thirdly, forging and high-temperature homogenization, heating the electroslag ingot to 1150-1200 ℃ for cross forging, and performing high-temperature homogenization treatment at 1200-1260 ℃ in the forging process;
fourthly, secondary annealing treatment, wherein the forging stock is treated by high-temperature normalizing and spheroidizing annealing;
fifthly, hardening and tempering.
The steps of circuit primary smelting, refining, electroslag remelting and the like are carried out according to the conventional method, the only time for adding the cerium wire needing attention is preferably, the cerium wire is fed according to the component proportion after refining, and argon is blown for stirring for at least 10min.
The high-temperature homogenization treatment is carried out in the forging process to promote the uniform diffusion of alloy elements, reduce the zonal segregation of the forging stock caused by dendrite segregation and effectively eliminate a large amount of liquated carbides precipitated in the solidification process of steel.
Further, the high-temperature normalizing temperature is 980 +/-10 ℃, and the spheroidizing annealing temperature is 760 +/-10 ℃.
Further, the upsetting ratio: 2.0-2.1, drawing the intermediate blank into 550mm along the diameter direction, returning the intermediate blank to a heating furnace for high-temperature homogenization treatment for more than 20 hours, then performing secondary upsetting, wherein the secondary upsetting direction is vertical to the primary upsetting direction, drawing the intermediate blank according to the secondary upsetting direction, air cooling the intermediate blank to 1000 +/-20 ℃, drawing and forming the intermediate blank by a precision forging machine, and performing fog cooling treatment after forging.
Further, the mandrel blank is treated by water quenching and secondary high-temperature tempering, the quenching temperature is 930 +/-10 ℃, low-temperature tempering and air cooling are carried out after water quenching to the room temperature, and then the two-time high-temperature tempering treatment is carried out. The water quenching is matched with low-temperature tempering and high-temperature tempering to ensure the complete transformation of the residual austenite and eliminate the residual stress in the workpiece.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the scheme, the components of the core rod material are adjusted on the basis of 4Cr5MoSiV1, niobium, neodymium, tantalum and cerium are added, the component proportion is comprehensively adjusted, and the casting process is designed in a targeted manner, so that the prepared core rod has excellent high-temperature-resistant and wear-resistant performance.
Detailed Description
The present invention will be further described with reference to the following specific examples.
Example 1
Firstly, adding scrap steel and the like into an electric furnace for smelting, and carrying out deoxidation, decarburization, desulfurization, dephosphorization and the like according to the conventional method, refining after smelting, and carrying out deoxidation, desulfurization and the like according to the conventional method, feeding cerium wires in proportion at the final stage of refining, blowing argon gas for stirring for at least 10min, and finally finely adjusting the alloy components of molten steel to ensure that the final components of the molten steel are as follows: 0.35% of carbon, 0.7% of silicon, 0.35% of manganese, less than 0.01% of sulfur, less than 0.01% of phosphorus, 5.2% of chromium, 1.62% of molybdenum, 1% of vanadium, 0.02% of niobium, 0.002% of neodymium, 0.03% of tantalum, 0.03% of cerium, and the balance of iron and less than 0.3% of impurities; and then casting and forming an electrode blank, carrying out electroslag remelting on the head and tail of the motor blank, selecting a ternary slag system of 6.
And step two, annealing treatment, namely heating the electroslag ingot to 920 +/-10 ℃, preserving the heat for 12 hours, and then cooling to 520 +/-10 ℃ at the speed of 45-50 ℃.
Thirdly, forging and high-temperature homogenizing, namely heating the electroslag ingot to 1170 +/-5 ℃, performing cross forging on an oil press, firstly upsetting, controlling the upsetting ratio to be 2.0-2.1, then drawing the electroslag ingot into an intermediate blank of 550mm along the diameter direction, and returning the intermediate blank to a heating furnace for high-temperature homogenizing treatment at 1235 ℃ for 24 hours; and then carrying out secondary upsetting, wherein the direction of the secondary upsetting is vertical to the direction of the primary upsetting, drawing the secondary upsetting into an intermediate blank according to the direction of the secondary upsetting, air-cooling the intermediate blank to 1000 +/-20 ℃, drawing and forming by a fine forging machine, wherein the drawing speed of each pass in the drawing process is 3-3.5m/min, the drawing speed of the last pass is 2-2.5m/min, and carrying out fog cooling treatment after forging.
Step four, secondary annealing treatment, namely, firstly carrying out high-temperature normalizing at 985 ℃, carrying out spheroidizing annealing treatment by carrying out fog cooling to 350-380 ℃ and then heating to 760 ℃, and then cooling to 500 ℃;
fifthly, a step of thermal refining, namely heating to 940 ℃ for water quenching, then tempering at 220 ℃ and low temperature, then heating to 620 +/-10 ℃ for primary high temperature tempering, cooling to room temperature, and then heating to 620 +/-10 ℃ again for secondary high temperature tempering.
Example 2
Firstly, adding scrap steel and the like into an electric furnace for smelting, and carrying out deoxidation, decarburization, desulfurization, dephosphorization and the like according to the conventional method, refining after smelting, and carrying out deoxidation, desulfurization and the like according to the conventional method, feeding cerium wires in proportion at the final stage of refining, blowing argon gas for stirring for at least 10min, and finally finely adjusting the alloy components of molten steel to ensure that the final components of the molten steel are as follows: 0.38% of carbon, 0.8% of silicon, 0.40% of manganese, less than 0.01% of sulfur, less than 0.01% of phosphorus, 5.4% of chromium, 1.70% of molybdenum, 1.1% of vanadium, 0.025% of niobium, 0.003% of neodymium, 0.04% of tantalum, 0.035% of cerium, and the balance of iron and less than 0.3% of impurities; and then casting and forming an electrode blank, carrying out electroslag remelting on the head and tail of the motor blank, selecting a ternary slag system of 6.
And step two, annealing treatment, namely heating the electroslag ingot to 940 +/-10 ℃, preserving heat for 12 hours, and cooling to 530 +/-10 ℃ at the speed of 45-50 ℃.
Thirdly, forging and high-temperature homogenizing, namely heating the electroslag ingot to 1180 +/-5 ℃, performing cross forging on an oil press, firstly upsetting, controlling the upsetting ratio to be 2.0-2.1, then drawing the electroslag ingot into an intermediate blank of 550mm along the diameter direction, and returning the intermediate blank to a heating furnace for high-temperature homogenizing treatment at 1245 ℃ for 24 hours; and then carrying out secondary upsetting, wherein the direction of the secondary upsetting is vertical to the direction of the primary upsetting, drawing the secondary upsetting into an intermediate blank according to the direction of the secondary upsetting, air-cooling the intermediate blank to 1000 +/-20 ℃, drawing and forming by a fine forging machine, wherein the drawing speed of each pass in the drawing process is 3-3.5m/min, the drawing speed of the last pass is 2-2.5m/min, and carrying out fog cooling treatment after forging.
Step four, secondary annealing treatment, namely, firstly carrying out high-temperature normalizing at 985 ℃, carrying out spheroidizing annealing treatment by carrying out fog cooling to 350-380 ℃ and then heating to 760 ℃, and then cooling to 500 ℃;
fifthly, a step of thermal refining, which is to heat up to 940 ℃ for water quenching, then temper at 220 ℃ and low temperature, then heat up to 620 +/-10 ℃ for primary high temperature tempering, cool down to room temperature, and heat up to 620 +/-10 ℃ again for secondary high temperature tempering.
Example 3
Firstly, adding scrap steel and the like into an electric furnace for smelting, and carrying out deoxidation, decarburization, desulfurization, dephosphorization and the like according to the conventional method, refining after smelting, and carrying out deoxidation, desulfurization and the like according to the conventional method, feeding cerium wires in proportion at the final stage of refining, blowing argon gas for stirring for at least 10min, and finally finely adjusting the alloy components of molten steel to ensure that the final components of the molten steel are as follows: 0.41 percent of carbon, 0.9 percent of silicon, 0.43 percent of manganese, less than 0.01 percent of sulfur, less than 0.01 percent of phosphorus, 5.8 percent of chromium, 1.75 percent of molybdenum, 1.2 percent of vanadium, 0.026 percent of niobium, 0.003 percent of neodymium, 0.044 percent of tantalum, 0.032 percent of cerium, and the balance of iron and less than 0.3 percent of impurities; and then casting and forming an electrode blank, carrying out electroslag remelting on the head and tail of the motor blank, selecting a ternary slag system of 6.
And step two, annealing treatment, namely heating the electroslag ingot to 920 +/-10 ℃, preserving the temperature for 12 hours, and then cooling to 520 +/-10 ℃ at the speed of 45-50 ℃.
Thirdly, forging and high-temperature homogenizing, namely heating the electroslag ingot to 1170 +/-5 ℃, performing cross forging on an oil press, firstly upsetting, controlling the upsetting ratio to be 2.0-2.1, then drawing the electroslag ingot into an intermediate blank 550mm along the diameter direction, and returning the intermediate blank to a heating furnace for high-temperature homogenizing treatment at 1235 ℃ for 24 hours; and then carrying out secondary upsetting, wherein the direction of the secondary upsetting is vertical to the direction of the primary upsetting, drawing the secondary upsetting into an intermediate blank according to the direction of the secondary upsetting, air-cooling the intermediate blank to 1000 +/-20 ℃, drawing and forming by a fine forging machine, wherein the drawing speed of each pass in the drawing process is 3-3.5m/min, the drawing speed of the last pass is 2-2.5m/min, and carrying out fog cooling treatment after forging.
Step four, secondary annealing treatment, namely, firstly carrying out high-temperature normalizing at 985 ℃, carrying out spheroidizing annealing treatment by carrying out fog cooling to 350-380 ℃ and then heating to 760 ℃, and then cooling to 500 ℃;
fifthly, a step of thermal refining, namely heating to 940 ℃ for water quenching, then tempering at 220 ℃ and low temperature, then heating to 620 +/-10 ℃ for primary high temperature tempering, cooling to room temperature, and then heating to 620 +/-10 ℃ again for secondary high temperature tempering.
Comparative example 1
The same as example 3, except that the composition of molten steel was finely adjusted: : 0.26% of carbon, 0.9% of silicon, 0.43% of manganese, less than 0.01% of sulfur, less than 0.01% of phosphorus, 4.2% of chromium, 1.75% of molybdenum, 1.2% of vanadium, 0.03% of niobium, 0.003% of neodymium, 0.044% of tantalum, 0.036% of cerium, and the balance of iron and impurities less than 0.3%.
The properties of the products prepared in the above examples and comparative examples were measured as follows:
it can be seen that the hardness and tensile strength of the core rod material prepared by the process are improved, the wear resistance is improved, and in addition, the value is superior to that of a 4Cr5MoSiV1 material in the detection of the mechanical property at 700 ℃.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to those skilled in the art without departing from the principles of the present invention should also be considered as within the scope of the present invention.
Claims (4)
1. The high-speed laser resistant high-temperature wear-resistant material for the core rod is characterized by comprising 0.35-0.41% of carbon, 0.7-0.9% of silicon, 0.35-0.43% of manganese, less than 0.01% of sulfur, less than 0.01% of phosphorus, 5.2-5.8% of chromium, 1.62-1.75% of molybdenum, 1-1.2% of vanadium, 0.02-0.03% of niobium, 0.002-0.004% of neodymium, 0.03-0.06% of tantalum, 0.03-0.038% of cerium, and the balance of iron and inevitable impurities;
the preparation method of the material comprises the following steps:
firstly, carrying out primary smelting, refining and electroslag remelting casting by an electric furnace to form an electroslag ingot;
secondly, annealing treatment, namely heating the electroslag ingot to 900-950 ℃, preserving heat for 12-18h, and then cooling to 500-550 ℃ at the speed of 45-50 ℃;
thirdly, forging and high-temperature homogenization, heating the electroslag ingot to 1150-1200 ℃ for cross forging, and performing high-temperature homogenization treatment at 1200-1260 ℃ in the forging process; upsetting ratio: 2.0-2.1, drawing the intermediate billet into an intermediate billet with the diameter of 550mm along the diameter direction, returning the intermediate billet to a heating furnace for high-temperature homogenization treatment for more than 20 hours, then performing secondary upsetting, wherein the secondary upsetting direction is vertical to the primary upsetting direction, drawing the intermediate billet into the intermediate billet according to the secondary upsetting direction, air cooling the intermediate billet to 1000 +/-20 ℃, drawing and forming the intermediate billet by a precision forging machine, and performing fog cooling treatment after forging;
fourth, secondary annealing treatment, wherein the forging stock is treated by high-temperature normalizing and spheroidizing annealing, the high-temperature normalizing temperature is 980 +/-10 ℃, and the spheroidizing annealing temperature is 760 +/-10 ℃;
fifthly, quenching and tempering; heating to 940 deg.C for water quenching, tempering at 220 deg.C, heating to 620 + -10 deg.C for primary high-temperature tempering, cooling to room temperature, and heating to 620 + -10 deg.C for secondary high-temperature tempering.
2. The high-speed laser-resistant high-temperature wear-resistant material for the core rod as set forth in claim 1, wherein: wherein, niobium is 0.025-0.028%, tantalum is 0.042-0.048%, cerium is 0.03-0.033%.
3. The high-speed laser-resistant high-temperature wear-resistant material for the core rod as set forth in claim 1, wherein: the content of impurities is less than 0.3 percent.
4. The high-speed laser high-temperature resistant and wear-resistant core rod material as recited in claim 1, wherein: feeding cerium wires according to the component proportion after refining, blowing argon gas and stirring for at least 10min.
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