CN219112510U - Improved high-carbon semisteel finish rolling section steel roller for rolling railway gauge baffle - Google Patents
Improved high-carbon semisteel finish rolling section steel roller for rolling railway gauge baffle Download PDFInfo
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- CN219112510U CN219112510U CN202223501675.3U CN202223501675U CN219112510U CN 219112510 U CN219112510 U CN 219112510U CN 202223501675 U CN202223501675 U CN 202223501675U CN 219112510 U CN219112510 U CN 219112510U
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- Prior art keywords
- connecting section
- roller
- concave cavity
- gauge baffle
- semisteel
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- 238000005096 rolling process Methods 0.000 title claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 24
- 239000010959 steel Substances 0.000 title claims abstract description 24
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000001125 extrusion Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910001563 bainite Inorganic materials 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- OGSYQYXYGXIQFH-UHFFFAOYSA-N chromium molybdenum nickel Chemical compound [Cr].[Ni].[Mo] OGSYQYXYGXIQFH-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
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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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Rolling Contact Bearings (AREA)
Abstract
The utility model relates to an improved generation rolls high-carbon semisteel finish rolling shaped steel roll of railway gauge baffle, it includes upper roller and lower roller that upper and lower level set up, set up one or more sets of first cavity subassembly on the upper roller outer wall along length direction evenly, set up one or more sets of second cavity subassembly on the lower roller outer wall along length direction evenly; the first concave cavity component and the second concave cavity component are oppositely arranged, and the first concave cavity component and the second concave cavity component are spliced to form a track gauge baffle cross-section structure; the first concave cavity assembly comprises a first connecting section, a second connecting section and a third connecting section; the second cavity assembly includes a fourth connecting section, a fifth connecting section, and a sixth connecting section. The improved rolling railway gauge baffle high-carbon semisteel finish rolling section steel roller can remarkably improve the roller hardness and increase the wear resistance; the impact extrusion toughness is improved, and the thermal fatigue crack resistance is improved; the microscopic density of the basic structure is thinned, the service life of the roller is prolonged, and the operation efficiency and benefit are improved for reducing the production cost of production enterprises.
Description
Technical Field
The utility model relates to the technical field of rollers, in particular to an improved high-carbon semisteel finish rolling section steel roller for rolling railway gauge baffles.
Background
The market demand of railway track gauge baffles used by supporting facilities of high-speed railway construction is increasing. The railway gauge baffle plate is made of MnCrV steel, crMo steel, carbon steel and medium manganese A, B, C steel, and the steel has high self-hardening property and high rigidity. In order to ensure the stability, safety and long-term performance of railway operation, the requirement on the accuracy of the railway gauge baffle is very strict. At present, soybean of a manufacturer for rolling railway gauge baffles adopts chromium-molybdenum-nickel ball milling infinite chilled AD160 semisteel and graphite steel as roller materials. In the state that the pass of the rolls made of the materials is wider than that of the polyester steel rolled piece, the hardness drop of the roll body is large, so that the single-pass rolling quantity of the rolls is low, the groove changing operation and the roll changing operation are frequent, the roll consumption is increased, the rolling mill operation is low, the quality of the rolled piece is influenced, and the roll breakage phenomenon can occur even in the middle and later period operation; the latter, although providing a certain improvement in the yield and quality of the rolled stock, still does not meet the production requirements due to the lower hardness.
Disclosure of Invention
The utility model aims to solve the technical problems that: in order to solve the problems in the prior art, the improved high-carbon semisteel finish rolling type steel roller for rolling the railway gauge baffle plate can remarkably improve the roller hardness and the wear resistance; the impact extrusion toughness is improved, and the thermal fatigue crack resistance is improved; the microscopic density of the basic structure is thinned, the service life of the roller is prolonged, and the operation efficiency and benefit are improved for reducing the production cost of production enterprises.
The technical scheme adopted for solving the technical problems is as follows: an improved high-carbon semisteel finish rolling section steel roller for rolling a railway gauge baffle comprises an upper roller and a lower roller which are horizontally arranged up and down, wherein one or more groups of first concave cavity assemblies are uniformly arranged on the outer wall of the upper roller along the length direction, and one or more groups of second concave cavity assemblies are uniformly arranged on the outer wall of the lower roller along the length direction; the first concave cavity component and the second concave cavity component are oppositely arranged, and the first concave cavity component and the second concave cavity component are spliced to form a track gauge baffle cross-section structure; the first concave cavity assembly comprises a first connecting section, a second connecting section and a third connecting section, and the first connecting section is connected with the third connecting section through the second connecting section; the second concave cavity assembly comprises a fourth connecting section, a fifth connecting section and a sixth connecting section; the fourth connecting section is connected with the sixth connecting section through a fifth connecting section.
Further defined, in the above technical solution, the first connecting section and the fourth connecting section are spliced to form a tail portion of the gauge baffle.
Further defined, in the above technical solution, the second connecting section and the fifth connecting section are spliced to form the waist portion of the gauge baffle.
Further defined, in the above technical solution, the third connecting section and the sixth connecting section are spliced to form the head of the gauge baffle.
Further limited, in the above technical scheme, the two ends of the upper roller are provided with bearing blocks, and one side of the bearing block is provided with a transmission end.
Further limited, in the above technical scheme, the two ends of the lower roller are provided with bearing blocks, and one side of each bearing block is provided with a transmission end.
The beneficial effects of the utility model are as follows: the improved high-carbon semisteel finish-rolled section steel roller for rolling the railway gauge baffle plate can remarkably improve the roller hardness and increase the wear resistance; the impact extrusion toughness is improved, and the thermal fatigue crack resistance is improved; the microscopic density of the basic structure is thinned, the service life of the roller is prolonged, and the operation efficiency and benefit are improved for reducing the production cost of production enterprises.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of a gage baffle.
The reference numerals in the drawings are: 1. the upper roller, 2, the lower roller, 3, the track gauge baffle, 4, the first connecting section, 5, the second connecting section, 6, the third connecting section, 7, the fourth connecting section, 8, the fifth connecting section, 9, the sixth connecting section, 10, the tail, 11, the waist, 12, the head, 13, the bearing gear, 14 and the driving end.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
The high-carbon semisteel finish rolling profile steel roller for the improved rolling railway gauge baffle plate is shown in fig. 1 and 2, and comprises an upper roller 1 and a lower roller 2 which are horizontally arranged up and down, wherein one or more groups of first concave cavity components are uniformly arranged on the outer wall of the upper roller 1 along the length direction, and one or more groups of second concave cavity components are uniformly arranged on the outer wall of the lower roller 2 along the length direction; the first concave cavity component and the second concave cavity component are oppositely arranged, and the first concave cavity component and the second concave cavity component are spliced to form a cross-section structure of the track gauge baffle 3; the first concave cavity component comprises a first connecting section 4, a second connecting section 5 and a third connecting section 6, and the first connecting section 4 is connected with the third connecting section 6 through the second connecting section 5; the second concave cavity assembly comprises a fourth connecting section 7, a fifth connecting section 8 and a sixth connecting section 9; the fourth connecting section 7 and the sixth connecting section 9 are connected through a fifth connecting section 8.
Wherein the first connecting section 4 and the fourth connecting section 7 are spliced to form the tail 10 of the gauge baffle 3. The second connecting section 5 and the fifth connecting section 8 are spliced to form the waist portion 11 of the gage baffle 3. The third connecting section 6 and the sixth connecting section 9 are spliced to form the head 12 of the gage baffle. The two ends of the upper roller 1 are provided with bearing blocks 13, and one side of the bearing block 13 is provided with a driving end 14. The two ends of the lower roller 2 are provided with bearing blocks 13, and one side of the bearing block 13 is provided with a driving end 14.
The processing technology of the improved rolling railway gauge baffle high-carbon semisteel finish rolling section steel roller is as follows: 1. optimally configuring chemical components: c:1.70% -1.90%; si:0.40% -0.80%; mn:0.60% -1.20%; cr:1.00% -1.80%; ni:1.00% -2.00%; mo:0.40% -0.60%; v:0.10% -0.20%; nb:0.20% -0.40%; 2. special heat treatment: diffusion annealing; carbon, chromium, molybdenum and vanadium in the roller are important elements for forming semisteel roller carbide, so that the semisteel roller is also an important element for improving the wear resistance of the roller; because of the serious segregation of chromium and other alloys in the cast structure, the roller needs to be subjected to high-temperature diffusion annealing. The roller is opened at 550-600 ℃ and is kept warm for 2-4 hours after being charged, then the temperature is raised at the speed of 10-15 ℃/hour, the roller is heated to 960-1100 ℃ and is kept warm for 8-10 hours, and the roller tissue is cooled after austenitizing; spheroidizing; and keeping the temperature for 4-6 hours when the roller temperature is slightly higher than the AC 1-760-850 ℃. Converting the carbide of the roller tissue seeds from a sheet shape into a sphere or a particle shape; then hanging the roller to a rotating riding wheel for rapid air cooling; normalizing; feeding the roller to a furnace for normalizing at the temperature of 450-480 ℃ at the temperature rising speed of 10-20 ℃/h, preserving the heat for 4-6 hours at the temperature of 660-680 ℃, then heating up, preserving the heat at the temperature of 920-950 ℃ at the temperature rising speed of 12 ℃/h, and carrying out spray quenching on a spray quenching machine every 25 mm/h; tempering; feeding the materials into a furnace for tempering at the temperature of 430-450 ℃; heating to a temperature of 10 ℃/h, heating to 530-550 ℃, keeping the temperature for 6 hours, cooling the furnace, and discharging the furnace after the temperature of the roller is less than or equal to 100 ℃.
The improved rolling railway gauge baffle high-carbon semisteel finish rolling section steel roller has the roller surface hardness of 65-70HSD, and the drop between the roller surface and the groove bottom of the groove is less than or equal to 2HSD; the tensile strength of the roller is more than or equal to 580HSD; the metallographic structure is fine pearlite+bainite+eutectic carbide.
The specification of the improved rolled high-carbon semisteel finish-rolled section steel roller for the railway gauge baffle is 850 x 180mm; the roller is used in rolling enterprises, the rolling yield can be doubled, the surface quality of the rolled railway gauge baffle 3 is excellent, and the production efficiency and benefit of the rolling enterprises are improved.
The foregoing description is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical solution of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (6)
1. An improved generation rolls high-carbon semisteel finish rolling shaped steel roll of railway gauge baffle, its characterized in that: the device comprises an upper roller and a lower roller which are horizontally arranged up and down, wherein one or more groups of first concave cavity components are uniformly arranged on the outer wall of the upper roller along the length direction, and one or more groups of second concave cavity components are uniformly arranged on the outer wall of the lower roller along the length direction; the first concave cavity component and the second concave cavity component are oppositely arranged, and the first concave cavity component and the second concave cavity component are spliced to form a track gauge baffle cross-section structure; the first concave cavity assembly comprises a first connecting section, a second connecting section and a third connecting section, and the first connecting section is connected with the third connecting section through the second connecting section; the second concave cavity assembly comprises a fourth connecting section, a fifth connecting section and a sixth connecting section; the fourth connecting section is connected with the sixth connecting section through a fifth connecting section.
2. An improved rolled high carbon semisteel finish rolled steel roll for railway gauge baffle according to claim 1, wherein: the first connecting section and the fourth connecting section are spliced to form the tail part of the track gauge baffle.
3. An improved rolled high carbon semisteel finish rolled steel roll for railway gauge baffle according to claim 1, wherein: the second connecting section and the fifth connecting section are spliced to form the waist of the gauge baffle.
4. An improved rolled high carbon semisteel finish rolled steel roll for railway gauge baffle according to claim 1, wherein: the third connecting section and the sixth connecting section are spliced to form the head of the gauge baffle.
5. An improved rolled high carbon semisteel finish rolled steel roll for railway gauge baffle according to claim 1, wherein: the upper roller both ends all set up the bearing shelves, one side of bearing shelves set up the driving end.
6. An improved rolled high carbon semisteel finish rolled steel roll for railway gauge baffle according to claim 1, wherein: the lower roller both ends all set up the bearing shelves, one side of bearing shelves set up the driving end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223501675.3U CN219112510U (en) | 2022-12-27 | 2022-12-27 | Improved high-carbon semisteel finish rolling section steel roller for rolling railway gauge baffle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223501675.3U CN219112510U (en) | 2022-12-27 | 2022-12-27 | Improved high-carbon semisteel finish rolling section steel roller for rolling railway gauge baffle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219112510U true CN219112510U (en) | 2023-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223501675.3U Active CN219112510U (en) | 2022-12-27 | 2022-12-27 | Improved high-carbon semisteel finish rolling section steel roller for rolling railway gauge baffle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219112510U (en) |
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2022
- 2022-12-27 CN CN202223501675.3U patent/CN219112510U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An improved rolling mill for high carbon semi steel precision rolling of railway gauge plates Granted publication date: 20230602 Pledgee: Agricultural Bank of China Limited by Share Ltd. Changzhou Wujin branch Pledgor: Jiangsu Hongwei Roll Co.,Ltd. Registration number: Y2024980036369 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |