CN115612935B - High-performance sector plate of hot-rolled winding drum and manufacturing method thereof - Google Patents
High-performance sector plate of hot-rolled winding drum and manufacturing method thereof Download PDFInfo
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- 238000004804 winding Methods 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000000126 substance Substances 0.000 claims abstract description 11
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 11
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 10
- 238000005496 tempering Methods 0.000 claims description 24
- 238000004321 preservation Methods 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 14
- 238000010791 quenching Methods 0.000 claims description 11
- 230000000171 quenching effect Effects 0.000 claims description 11
- 238000000137 annealing Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 7
- 238000005242 forging Methods 0.000 claims description 5
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 30
- 239000010959 steel Substances 0.000 abstract description 30
- 229910045601 alloy Inorganic materials 0.000 abstract description 5
- 239000000956 alloy Substances 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 229910052742 iron Inorganic materials 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 6
- 230000035882 stress Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 230000008646 thermal stress Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 229910001566 austenite Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 229910001105 martensitic stainless steel Inorganic materials 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- SYCBLWWKDXQZRR-UHFFFAOYSA-N [Ni].[W].[Cr] Chemical class [Ni].[W].[Cr] SYCBLWWKDXQZRR-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
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- 238000005096 rolling process Methods 0.000 description 1
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- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- -1 tungsten carbide compound Chemical class 0.000 description 1
- 238000009849 vacuum degassing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/28—Drums or other coil-holders
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
-
- 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
-
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
-
- 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
- C21D2211/00—Microstructure comprising significant phases
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The invention discloses a high-performance sector plate of a hot rolled winding drum, which comprises the following chemical components in percentage by weight: c:0.16-0.25%, si:0.17-0.55%, mn:0.8-1.2%, P is less than or equal to 0.015%, S is less than or equal to 0.015%, cr:10-12%, ni:1.2-1.5%, mo:1.2-1.6%, V:0.5-0.8%, W:0.3-0.4%, ti:0.25-0.35%, and the balance being Fe, and Cr+Ni+Mo is more than or equal to 13%. The invention also discloses a manufacturing method of the high-performance sector plate of the hot rolled winding drum. According to the invention, by optimizing alloy components and optimizing a heat treatment process, the plasticity and toughness of steel are improved, and the cold and hot fatigue resistance is improved, so that the service life of the hot rolled reel sector plate is prolonged.
Description
Technical Field
The invention belongs to the field of large metallurgical equipment materials and heat treatment thereof, and particularly relates to a hot rolled winding drum sector plate and a manufacturing method thereof.
Background
The coiling machine is an important device of the strip steel production line of each steel mill, in particular to a hot continuous rolling strip steel production line. The sector plate is one of important parts of a coiling machine reel, and is easy to deform, crack and wear failure due to the fact that the sector plate is subjected to the alternating action of high temperature of 500 ℃ of strip steel and circulation of cooling medium, coiling tension and strip steel friction and abrasion during operation. The abrasion and crack of the sector plate easily cause accidents such as slipping of the winding drum, poor winding shape, scrap steel and the like. Therefore, the selection of the material of the sector plate of the winding drum and the heat treatment process are key factors for prolonging the service life of the winding drum.
Specifically: in the coiling process of the hot rolled steel plate, the temperature of the steel plate is up to 600-800 ℃, the weight of a single steel coil can be up to 50 tons, the contact time of the steel plate and a sector plate is about 120S, the temperature of the sector plate can be up to 500 ℃, the sector plate bears larger radial pressure and thermal stress during working, water is sprayed to cool rapidly after coil stripping, the sector plate is easy to generate residual stress concentration, local deformation and thermal fatigue, the problems of fatigue crack wear and the like exist, the elongation after fracture of the sector plate is only 10 percent, the area shrinkage is only 30 percent, and the impact power (AKv) is only about 10J are detected, so that the lower plasticity and toughness indexes of the sector plate are the main reasons for generating thermal fatigue cracks.
The material of the sector plate is usually martensitic heat-resistant stainless steel of nickel-chromium-tungsten series, such as 2Cr12NiMoWV and the like: the material contains more strong carbide forming element tungsten, and the tungsten carbide compound is extremely difficult to dissolve and easy to separate out from the polycrystalline boundary in the forging and heat treatment processes, so that the plasticity and toughness of the sector plate are reduced, and the online service time of the sector plate is shortened. When the steel passing amount of the newly manufactured reel reaches 80 to 100 kilotons, the sector plates are cracked and worn to different degrees.
Disclosure of Invention
The invention aims to solve the problem of providing a hot rolled coil high-performance sector plate and a manufacturing method thereof, wherein the alloy components are optimized, the heat treatment process is optimized, the plasticity and toughness of steel are improved, and the cold and hot fatigue resistance is improved, so that the service life of the hot rolled coil sector plate is prolonged.
The invention relates to a high-performance sector plate of a hot rolled winding drum, which comprises the following chemical components in percentage by weight: c:0.16-0.25%, si:0.17-0.55%, mn:0.8-1.2%, P is less than or equal to 0.015%, S is less than or equal to 0.015%, cr:10-12%, ni:1.2-1.5%, mo:1.2-1.6%, V:0.5-0.8%, W:0.3-0.4%, ti:0.25-0.35%, and the balance being Fe, and Cr+Ni+Mo is more than or equal to 13%.
Further, the hot rolled coil high performance sector plate preferably comprises the following chemical components in percentage by mass: c:0.2%, si:0.45%, mn:0.88%, P:0.012%, S:0.008%, cr:11.2%, ni:1.3%, mo:1.3%, V:0.78%, W:0.4%, ti:0.3% and the balance of Fe.
Further, the hot rolled coil high performance sector plate preferably comprises the following chemical components in percentage by mass: c:0.18%, si:0.41%, mn:0.95%, P:0.010%, S:0.009%, cr:10.8%, ni:1.25%, mo:1.3%, V:0.65%, W:0.33%, ti:0.25%, the balance being Fe.
Further, the hot rolled coil high performance sector plate preferably comprises the following chemical components in percentage by mass: c:0.22%, si:0.4%, mn:1.12%, P:0.014%, S:0.009%, cr:11.7%, ni:1.35%, mo:1.49%, V:0.75%, W:0.36%, ti:0.3% and the balance of Fe.
The main alloy element proportion of the high-performance sector plate of the hot rolled winding drum of the invention has the following effects:
1. the element C is an essential element for ensuring the strength of the steel, the content of C is more than 0.16 percent, and the excessively high carbon content has adverse effects on the plasticity, the toughness and the fatigue resistance of the steel; therefore, the C content in the sector plate should be properly reduced to 0.25% or less, so the C content of the steel for hot-rolled coil sector plate is preferably controlled to 0.16-0.25%;
2. si and Mn are common deoxidizing and desulfurizing elements in steel, and play roles in strengthening and improving hardenability, and improve the yield strength and yield ratio of the hot rolled coil sector plate; when the Si content exceeds 0.6%, inclusions are extremely liable to be generated, and the plasticity and toughness of the steel are seriously deteriorated, so that the Si content of the steel for hot rolled coil sector plates is preferably controlled to be 0.17-0.55%; mn element is also beneficial to improving toughness and wear resistance in the sector plate, so that the Mn content of the steel for hot rolled coil sector plates is preferably controlled to be 0.8-1.2%;
3. the Cr element content in the martensitic stainless steel is generally controlled to be 11-13%, so that the martensitic stainless steel mainly plays roles of strengthening, improving heat resistance, wear resistance and corrosion resistance, and the high Cr content tends to easily cause the reduction of the impact toughness of the steel, easily causes component segregation and reduces the plasticity; in order to reduce the use amount of Cr as much as possible, the Cr is usually added in combination with elements such as Mn, ni, mo and the like, and the Ni can improve the hardenability and tempering softening resistance of the hot rolled coil sector plate and reduce the ferrite content in the structure; mo can improve the strength, hardness and tempering stability of the hot rolled coil sector plate and can inhibit brittle transition of the sector plate in the repeated heating and cooling processes; therefore, the Cr content in the hot rolled coil fan-shaped plate is controlled to be 10.0-12.0 percent, and the Cr+Ni+Mo is more than or equal to 13 percent;
4. w and Ti are both strong carbide forming elements, so that the tempering softening resistance of the steel is improved. After quenching and tempering, carbide precipitation can obviously improve the plasticity and impact toughness of the sector plate; proper amount of Ti also has the function of obviously improving austenitizing temperature, refining grains and improving yield strength. Therefore, the W content is controlled to be 0.3-0.4%, and the Ti content is controlled to be 0.25-0.35%;
5. v can refine the structure grains, and form dispersed carbide with carbon to improve the strength and toughness and the stability of the structure in the repeated heating and cooling process; therefore, the V content is controlled to be 0.5-0.8%.
The manufacturing method of the high-performance sector plate of the hot rolled winding drum comprises the following steps: forging, annealing, rough machining, tempering, semi-finishing, stress relief tempering and finishing.
The heat treatment process comprises the following steps:
(1) Annealing: heat preservation is carried out at 900+/-20 ℃ and then furnace cooling is carried out until the temperature is below 350 ℃, and then air cooling is carried out until the temperature is room temperature;
(2) Tempering: heat preservation at 700+/-10 ℃, heat preservation at 920+/-10 ℃ and heat preservation at 1050+/-10 ℃ are carried out, then oil cooling is carried out to below 200 ℃, heat preservation at 700+/-10 ℃ is carried out, and then oil cooling is carried out to room temperature;
(3) Stress relief tempering: the semi-finished sector plate is kept at 600 ℃ for 48 hours and cooled by air.
Further, the temperature rising speed in the heat treatment process is controlled to be 100+/-20 ℃/h. Thus, the thermal stress can be reduced, and the deformation of the sector plate can be effectively controlled.
Further, the annealing temperature of the high-performance sector plate of the hot rolled winding drum is controlled to be 880-920 ℃; the temperature of the third heat preservation section in tempering is controlled between 1040 and 1060 ℃; the heat preservation time of annealing and tempering is controlled to be 1-4 minutes/mm according to the effective thickness of the sector plate.
The grain size of the high-performance sector plate of the hot rolled winding drum is more than or equal to 9 levels after heat treatment, the hardness is 230 to 250HB, and the structure is tempered sorbite and a small amount of ferrite.
The mechanical properties of the high-performance sector plate of the hot rolled winding drum after heat treatment are as follows: the tensile strength is more than or equal to 800MPa; the yield strength is more than or equal to 600MPa; elongation after breaking is more than or equal to 20%, area shrinkage is more than or equal to 50% (toughness); the impact energy AKV is more than or equal to 100J (plasticity).
Compared with the prior art, the high-performance sector plate of the hot rolled winding drum has higher impact toughness and plasticity, good lasting high-temperature strength, high-temperature thermal fatigue resistance and oxidation resistance and low notch sensitivity through optimizing alloy components and optimizing a heat treatment process, and the service life of the sector plate of the hot rolled winding drum is obviously prolonged, and the steel passing amount is more than 150 ten thousand tons.
Drawings
FIG. 1 is a metallographic structure diagram of a hot rolled coil high performance sector plate of the present invention.
Detailed Description
The hot rolled roll high performance sector plate and the method of manufacturing the same according to the present invention will be described in further detail with reference to examples.
The invention relates to a high-performance sector plate of a hot rolled winding drum, which comprises the following chemical components in percentage by weight: c:0.16-0.25%, si:0.17-0.55%, mn:0.8-1.2%, P is less than or equal to 0.015%, S is less than or equal to 0.015%, cr:10-12%, ni:1.2-1.5%, mo:1.2-1.6%, V:0.5-0.8%, W:0.3-0.4%, ti:0.25-0.35%, and the balance being Fe, and Cr+Ni+Mo is more than or equal to 13%.
The composition of the hot rolled coil high performance sector plate of the invention is preferably such that the specific compositions in examples 1-3 below are obtained, and the mass percentages of the chemical compositions in examples of the invention and in the background art are shown in Table 1 below.
TABLE 1 Material composition of hot rolled coil sector plate (wt.%), balance Fe
| Category(s) | C | Mn | Si | P | S | Cr | Mo | Ni | V | W | Ti |
| Example 1 | 0.20 | 0.88 | 0.45 | 0.012 | 0.008 | 11.2 | 1.3 | 1.3 | 0.78 | 0.40 | 0.3 |
| Example 2 | 0.18 | 0.95 | 0.41 | 0.010 | 0.009 | 10.8 | 1.3 | 1.25 | 0.65 | 0.33 | 0.25 |
| Example 3 | 0.22 | 1.12 | 0.4 | 0.014 | 0.009 | 11.7 | 1.49 | 1.35 | 0.75 | 0.36 | 0.3 |
| Comparative example | 0.28 | 0.57 | 0.33 | 0.015 | 0.006 | 11.3 | 0.78 | 0.58 | 0.27 | 0.78 | / |
The three embodiments of hot rolled reel sector plates are smelted by an electric furnace, cast ingots are manufactured by adopting an LF external refining, VD vacuum degassing process and electroslag remelting process, then a sector plate blank (such as a length of 2 m, a width of 0.6 m and a thickness of 0.6 m) is manufactured by high-temperature forging and annealing steps after forging, the blank is divided into two parts along the thickness direction, the blank is roughly milled to the sector plate blank shape, and then tempering, semi-finishing, stress relief tempering and finishing are carried out. The specific heat treatment process for 2Cr12NiMoWV in three examples and the background of the invention is shown in table 2 below.
Table 2, hot rolled coil sector plate heat treatment process
| Category(s) | Tempering | Stress-relieving tempering |
| Example 1 | 700 ℃ multiplied by 1h+920 ℃ multiplied by 1h+1050 ℃ multiplied by 3.5h oil quenching, 700 ℃ multiplied by 10h oil quenching | 600 ℃ x 48h air cooling |
| Examples2 | 700 ℃ multiplied by 1h+920 ℃ multiplied by 1h+1040 ℃ multiplied by 3.5h oil quenching, 710 ℃ multiplied by 10h oil quenching | 600 ℃ x 48h air cooling |
| Example 3 | 700 ℃ multiplied by 1h+920 ℃ multiplied by 1h+1060 ℃ multiplied by 3.5h oil quenching, 710 ℃ multiplied by 10h oil quenching | 600 ℃ x 48h air cooling |
| Comparative example | 700 ℃ multiplied by 1h+920 ℃ multiplied by 1h+1020 ℃ multiplied by 3.5h oil quenching, 680 ℃ multiplied by 10h oil quenching | 550 ℃ x 48h air cooling |
Wherein the heating rate in the heat treatment process is controlled to be 100+/-20 ℃/h; thus, the thermal stress can be reduced, and the deformation of the sector plate can be effectively controlled.
Wherein the annealing temperature in the heat treatment process is controlled between 880 and 920 ℃; the temperature of the third heat preservation section in tempering is controlled between 1040 and 1060 ℃; the heat preservation time of annealing and tempering is controlled to be 1-4 minutes/mm according to the effective thickness of the sector plate.
The function of controlling the heat preservation temperature and the heat preservation time is as follows: 1. ensuring that indissolvable alloy elements in steel are fully dissolved into austenite to form uniform alloying; 2. the austenite grains of the steel are ensured to be uniform, mixed crystals are avoided, and the purpose of refining the grains is finally achieved; 3. tempering is carried out at 700 ℃ after quenching (namely, the temperature of the fourth section of heat preservation in the tempering treatment), so that carbide in steel is fully separated out, and the stability of a structure and the performance are ensured to meet the requirements.
The three examples were sampled for tensile, impact performance test, metallographic structure detection analysis, and cold and hot cycle fatigue test, and the test results of the standard mechanical property samples of the 2Cr12NiMoWV sector plates in the three examples and the background art of the invention are shown in Table 3.
TABLE 3 detection of mechanical Properties of Hot rolled roll sector plate (23 ℃ C.)
| Impact energy AKV (J) | Tensile strength (MPa) | Yield strength (MPa) | Elongation after break (%) | Yield of section (%) | Hardness (HB) | |
| Example 1 | 103.7、106.8、109.1、105.1 | 818 | 624 | 20.5 | 56 | 243-248 |
| Example 2 | 130.8、134.5、143.9、139.6 | 810 | 610 | 21.5 | 58 | 236-239 |
| Example 3 | 113.7、114.5、118.3、113.2 | 816 | 603 | 23.0 | 60 | 242-245 |
| Comparative example | 23.1、22.3、23.5、26.4 | 860 | 622 | 15.5 | 31 | 241-254 |
As can be seen from the table above: example 1 sector plate hardness was 243 to 248HB; the sector plate of example 2 has a hardness of 236 to 239HB and the sector plate of example 3 has a hardness of 242 to 245HB; as can be seen from fig. 1, the structure of the three embodiments of the present invention is tempered sorbite which maintains the martensite orientation, and the grain size of the sector plates of the three embodiments is 10 grade; the room temperature mechanical properties of the sector plates of the three embodiments all reach: the tensile strength is more than or equal to 800MPa; the yield strength is more than or equal to 600MPa; elongation after breaking is more than or equal to 20%; the area reduction rate is more than or equal to 50 percent; the impact energy AKV is more than or equal to 100J. Therefore, the mechanical property of the steel for the high-performance fan-shaped plate of the hot rolled winding drum is obviously better than that of the 2Cr12NiMoWV material in the background technology, so that the service life is prolonged. The online use data of the mountain steel sunshine 2050 and heavy steel 1780 hot rolling production line show that the first online steel passing amount of the sector plate can reach more than 150 ten thousand tons, the use effect is good, and no fatigue crack exists after flaw detection.
Claims (7)
1. A hot rolled winding drum high-performance sector plate comprises the following chemical components in percentage by mass: c:0.16-0.25%, si:0.17-0.55%, mn:0.8-1.2%, P is less than or equal to 0.015%, S is less than or equal to 0.015%, cr:10-12%, ni:1.2-1.5%, mo:1.2-1.6%, V:0.5-0.8%, W:0.3-0.4%, ti:0.25-0.35%, and the balance being Fe, wherein Cr+Ni+Mo is more than or equal to 13%; the manufacturing method comprises the following steps: forging, annealing, rough machining, tempering, semi-finishing, stress relief tempering and finishing; the heat treatment process comprises the following steps: (1) annealing: heat preservation is carried out at 900+/-20 ℃ and then furnace cooling is carried out until the temperature is below 350 ℃, and then air cooling is carried out until the temperature is room temperature; and (2) tempering: heat preservation at 700+/-10 ℃, heat preservation at 920+/-10 ℃ and heat preservation at 1050+/-10 ℃ are carried out, then oil cooling is carried out to below 200 ℃, heat preservation at 700+/-10 ℃ is carried out, and then oil cooling is carried out to room temperature; (3) stress relief tempering: the semi-finished sector plate is kept at 600 ℃ for 48 hours and cooled by air.
2. The hot rolled reel high performance sector plate as claimed in claim 1 wherein: the chemical components of the composition by mass percent are: c:0.2%, si:0.45%, mn:0.88%, P:0.012%, S:0.008%, cr:11.2%, ni:1.3%, mo:1.3%, V:0.78%, W:0.4%, ti:0.3% and the balance of Fe.
3. The hot rolled reel high performance sector plate as claimed in claim 1 wherein: the chemical components of the composition by mass percent are: c:0.18%, si:0.41%, mn:0.95%, P:0.010%, S:0.009%, cr:10.8%, ni:1.25%, mo:1.3%, V:0.65%, W:0.33%, ti:0.25%, the balance being Fe.
4. The hot rolled reel high performance sector plate as claimed in claim 1 wherein: the chemical components of the composition by mass percent are: c:0.22%, si:0.4%, mn:1.12%, P:0.014%, S:0.009%, cr:11.7%, ni:1.35%, mo:1.49%, V:0.75%, W:0.36%, ti:0.3% and the balance of Fe.
5. The hot rolled reel high performance sector plate as claimed in claim 1 wherein: the heating rate in the heat treatment process is controlled to be 100+/-20 ℃/h, and the heat preservation time of annealing and tempering is controlled to be 1-4 minutes/millimeter according to the effective thickness of the sector plate.
6. The hot rolled reel high performance sector plate as claimed in claim 1 wherein: the grain size of the hot rolled coil sector plate is more than or equal to 9 grades, the hardness after quenching and tempering is 230 to 250HB, and the structure is tempered sorbite and a small amount of ferrite.
7. The hot rolled reel high performance sector plate as claimed in claim 1 wherein: the mechanical properties are as follows: the tensile strength is more than or equal to 800MPa; the yield strength is more than or equal to 600MPa; elongation after breaking is more than or equal to 20%; the area reduction rate is more than or equal to 50 percent; the impact energy AKV is more than or equal to 100J.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104046917A (en) * | 2013-03-13 | 2014-09-17 | 香港城市大学 | Cu-rich nanocluster reinforced ultra-high strength ferrite steel and manufacturing method thereof |
| JP2016216809A (en) * | 2015-05-26 | 2016-12-22 | 新日鐵住金株式会社 | Low carbon steel sheet excellent in cold moldability and toughness after heat treatment and manufacturing method therefor |
| CN110484834A (en) * | 2019-08-21 | 2019-11-22 | 首钢集团有限公司 | A kind of Cr, Mn alloying TRIP steel and preparation method thereof |
| WO2019242448A1 (en) * | 2018-06-20 | 2019-12-26 | 宝山钢铁股份有限公司 | 125ksi steel grade sulfur-resistant oil well pipe and fabrication method therefor |
| CN111101064A (en) * | 2020-01-10 | 2020-05-05 | 泰尔重工股份有限公司 | High-performance bolt of bearing seat type joint and manufacturing method thereof |
| EP3783119A1 (en) * | 2019-08-20 | 2021-02-24 | ThyssenKrupp Steel Europe AG | Flat steel product with excellent oxidation and hot gas corrosion resistance and method for producing such a flat steel product |
| CN114959438A (en) * | 2021-02-20 | 2022-08-30 | 天津钢研海德科技有限公司 | High-corrosion-resistance high-toughness die steel and preparation method thereof |
| TW202233855A (en) * | 2021-02-18 | 2022-09-01 | 日商日鐵不銹鋼股份有限公司 | Martensitic stainless steel plate for brake disk rotor, brake disk rotor, and method for manufacturing martensitic stainless steel plate for brake disk rotor |
-
2022
- 2022-10-28 CN CN202211338016.4A patent/CN115612935B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104046917A (en) * | 2013-03-13 | 2014-09-17 | 香港城市大学 | Cu-rich nanocluster reinforced ultra-high strength ferrite steel and manufacturing method thereof |
| JP2016216809A (en) * | 2015-05-26 | 2016-12-22 | 新日鐵住金株式会社 | Low carbon steel sheet excellent in cold moldability and toughness after heat treatment and manufacturing method therefor |
| WO2019242448A1 (en) * | 2018-06-20 | 2019-12-26 | 宝山钢铁股份有限公司 | 125ksi steel grade sulfur-resistant oil well pipe and fabrication method therefor |
| EP3783119A1 (en) * | 2019-08-20 | 2021-02-24 | ThyssenKrupp Steel Europe AG | Flat steel product with excellent oxidation and hot gas corrosion resistance and method for producing such a flat steel product |
| CN110484834A (en) * | 2019-08-21 | 2019-11-22 | 首钢集团有限公司 | A kind of Cr, Mn alloying TRIP steel and preparation method thereof |
| CN111101064A (en) * | 2020-01-10 | 2020-05-05 | 泰尔重工股份有限公司 | High-performance bolt of bearing seat type joint and manufacturing method thereof |
| TW202233855A (en) * | 2021-02-18 | 2022-09-01 | 日商日鐵不銹鋼股份有限公司 | Martensitic stainless steel plate for brake disk rotor, brake disk rotor, and method for manufacturing martensitic stainless steel plate for brake disk rotor |
| CN114959438A (en) * | 2021-02-20 | 2022-08-30 | 天津钢研海德科技有限公司 | High-corrosion-resistance high-toughness die steel and preparation method thereof |
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