CN117145870A - High-performance roller and manufacturing method - Google Patents
High-performance roller and manufacturing method Download PDFInfo
- Publication number
- CN117145870A CN117145870A CN202311432126.1A CN202311432126A CN117145870A CN 117145870 A CN117145870 A CN 117145870A CN 202311432126 A CN202311432126 A CN 202311432126A CN 117145870 A CN117145870 A CN 117145870A
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- Prior art keywords
- roller
- heating furnace
- tray
- treatment
- furnace temperature
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 239000006185 dispersion Substances 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims description 57
- 238000010791 quenching Methods 0.000 claims description 9
- 238000004321 preservation Methods 0.000 claims description 8
- 230000000171 quenching effect Effects 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000005496 tempering Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 5
- 238000005192 partition Methods 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005552 hardfacing Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/34—Rollers; Needles
-
- 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
- B23P15/003—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatment Of Articles (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
The application relates to the technical field of roller processing, in particular to a high-performance roller and a manufacturing method thereof. The high-performance roller comprises a core part and a surface hardening layer, wherein the hardness of the core part is 90-98% of that of the surface hardening layer, the hardness of the surface hardening layer is 64.0-65.5 HRC, the surface stress of the surface hardening layer is 1120-1180 KN, the crushing load of the high-performance roller is 105-130 KN, and the crushing load dispersion difference of the high-performance roller is 25KN. Thus, the problem of poor wear resistance of the existing bearing roller is solved.
Description
Technical Field
The application relates to the technical field of roller processing, in particular to a high-performance roller and a manufacturing method thereof.
Background
The roller bearing has wide contact surface with the inner ring and the outer ring and small roller diameter, so the roller bearing can have larger load capacity and rigidity level in smaller space and is commonly used for assembling universal joints. The common roller bearing is a row of rollers, and the roller bearing generally comprises a bearing inner ring, a bearing outer ring and bearing rollers, wherein the bearing inner ring and the bearing outer ring are combined to form a mounting ring cavity of the roller bearing, and the roller parts are positioned at corresponding positions of the roller mounting ring cavity.
Along with the expansion of the application scene of the universal joint, the wear resistance and the service life of the universal joint are required to be higher, and the existing bearing roller cannot meet the use requirement.
Disclosure of Invention
The application provides a high-performance roller and a manufacturing method thereof, which are used for solving the problem of poor wear resistance of the existing bearing roller.
In a first aspect, the present application provides a high performance roller comprising:
the hardness of the core part is 90% -98% of the hardness of the surface hardening layer, the hardness of the surface hardening layer is 64.0 HRC-65.5 HRC, the surface stress of the surface hardening layer is 1120-1180 KN, the crushing load of the high-performance roller is 105-130 KN, and the crushing load dispersion difference of the high-performance roller is 25KN.
In a second aspect, the present application provides a method of manufacturing a high performance roller as in the first aspect, comprising:
and (3) feeding: placing the roller to be treated in a first tray;
quenching: placing the first material tray into a first heating furnace, wherein the first area furnace temperature of the first heating furnace is 750-830 ℃, the second area furnace temperature of the first heating furnace is 820+/-5 ℃, the third area furnace temperature of the first heating furnace is 830+/-5 ℃, the fourth area furnace temperature of the first heating furnace is 820+/-5 ℃, the heat preservation time of the roller is 88-92 minutes, and then carrying out oil quenching treatment on the roller;
cleaning: cleaning the oil quenched roller;
tempering: placing the cleaned roller into a second tray, placing the second tray into a second heating furnace, wherein the first area furnace temperature of the second heating furnace is 165+/-5 ℃, the second area furnace temperature of the second heating furnace is 165+/-5 ℃, the third area furnace temperature of the second heating furnace is 165+/-5 ℃, the fourth area furnace temperature of the second heating furnace is 165+/-5 ℃, and the heat preservation time of the roller is 147-153 minutes;
convexity treatment: placing the tempered roller into a first roller for treatment, and stopping the first roller when convexity of the roller meets a set precision value;
diameter treatment: the roller subjected to convexity treatment is placed into a second roller for treatment, and the second roller is stopped when the diameter of the roller meets a set diameter value;
and (3) detecting a finished product: crushing the manufactured roller, and detecting whether the crushing load of the roller reaches the standard.
In some embodiments, the height of the height-limiting plate of the first tray is less than or equal to 30mm.
In some embodiments, the set precision value range of convexity is: 0.012 mm-0.018 mm.
In some embodiments, the set precision value range for the diameter is: 0-0.001mm.
In order to solve the problem of poor wear resistance of the existing bearing roller, the application has the following advantages: the high performance roller may include a core and a hardfacing layer. The hardness of the core is smaller than that of the surface hardening layer, the hardness of the surface hardening layer is 64.0 HRC-65.5 HRC, and the surface stress of the surface hardening layer is 1120-1180 KN, so that the wear resistance of the roller surface is better. The crushing load of the high-performance roller can reach 105-130 KN, the dispersion of the crushing load can reach 25KN, the crushing load is higher, and the service life is prolonged.
Drawings
FIG. 1 illustrates a high performance roller schematic of an embodiment;
FIG. 2 illustrates a schematic diagram of a manufacturing apparatus for a high performance roller manufacturing method of an embodiment;
figure 3 illustrates a flow chart of a method of manufacturing a high performance roller of one embodiment.
Reference numerals: 01 a roller; 11 core parts; 12 a surface hardening layer; 02 manufacturing equipment; a first tray 21; 22 a first heating furnace; 23 a second tray; and 24, a second heating furnace.
Detailed Description
The disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those of ordinary skill in the art to better understand and thus practice the present disclosure, and are not meant to imply any limitation on the scope of the present disclosure.
As used herein, the term "comprising" and variants thereof are to be interpreted as meaning "including but not limited to" open-ended terms. The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment. The term "another embodiment" is to be interpreted as "at least one other embodiment". The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "transverse", "longitudinal", etc. refer to an orientation or positional relationship based on that shown in the drawings. These terms are only used to better describe the present application and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present application will be understood by those of ordinary skill in the art according to the specific circumstances. Furthermore, the terms "mounted," "configured," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances. Furthermore, the terms "first," "second," and the like, are used primarily to distinguish between different devices, elements, or components (the particular species and configurations may be the same or different), and are not used to indicate or imply the relative importance and number of devices, elements, or components indicated. Unless otherwise indicated, the meaning of "a plurality" is two or more.
The present embodiment discloses a high performance roller 01, as shown in fig. 1, may include: the hardness of the core 11 and the surface hardening layer 12 is 90% -98% of the hardness of the surface hardening layer 12, the hardness of the surface hardening layer 12 is 64.0 HRC-65.5 HRC, the surface stress of the surface hardening layer 12 is 1120-1180 KN, the crushing load of the high-performance roller 01 is 105-130 KN, and the crushing load dispersion difference of the high-performance roller 01 is 25KN.
In this embodiment, as shown in fig. 1, a high performance roller 01 may include a core 11 and a surface hardening layer 12, the surface hardening layer 12 may be enclosed in an outer layer of the core 11, and the hardness of the core 11 may be 90% to 98% of the hardness of the surface hardening layer 12. By setting the hardness of the core 11 to be smaller than the hardness of the surface hardening layer 12, the hardness of the surface hardening layer 12 may be 64.0HRC to 65.5HRC, and the surface stress of the surface hardening layer 12 may be 1120 to 1180KN, so that the wear resistance of the surface of the roller 01 may be better. The crushing load of the high-performance roller 01 can reach 105-130 KN, the dispersion difference of the crushing load can reach 25KN, and the service life of the roller 01 can be prolonged by improving the crushing load.
The present embodiment discloses a method for manufacturing a high performance roller 01 applied to the above embodiments, as shown in fig. 2 and 3, which may include:
and (3) feeding: placing the roller 01 to be treated in a first tray 21;
quenching: placing a first tray 21 into a first heating furnace 22, wherein the first area furnace temperature of the first heating furnace 22 is 750-830 ℃, the second area furnace temperature of the first heating furnace 22 is 820+/-5 ℃, the third area furnace temperature of the first heating furnace 22 is 830+/-5 ℃, the fourth area furnace temperature of the first heating furnace 22 is 820+/-5 ℃, the heat preservation time of a roller 01 is 88-92 minutes, and then carrying out oil quenching treatment on the roller 01;
cleaning: cleaning the oil quenched roller 01;
tempering: placing the cleaned roller 01 into a second tray 23, placing the second tray 23 into a second heating furnace 24, wherein the first area furnace temperature of the second heating furnace 24 is 165+/-5 ℃, the second area furnace temperature of the second heating furnace 24 is 165+/-5 ℃, the third area furnace temperature of the second heating furnace 24 is 165+/-5 ℃, the fourth area furnace temperature of the second heating furnace 24 is 165+/-5 ℃, and the heat preservation time of the roller 01 is 147-153 minutes;
convexity treatment: placing the tempered roller 01 into a first roller for treatment, and stopping the first roller when convexity of the roller 01 meets a set precision value;
diameter treatment: placing the roller 01 subjected to convexity treatment into a second roller for treatment, and stopping the second roller when the diameter of the roller 01 meets a set diameter value;
and (3) detecting a finished product: crushing the manufactured roller 01, and detecting whether the crushing load of the roller 01 meets the standard.
In the present embodiment, as shown in fig. 2, a manufacturing apparatus 02 employed for a manufacturing method of a high-performance roller 01 may include a first tray 21, a first heating furnace 22, a second tray 23, a second heating furnace 24, a first drum (not shown in the figure), and a second drum (not shown in the figure). The first tray 21 may be used to place the rollers 01, and the rollers 01 may be placed in the first heating furnace 22 through the first tray 21. The first heating furnace 22 may be used to oil quench the rollers 01. The second tray 23 may be used to receive the rollers 01 processed by the first heating furnace 22, and the rollers 01 may be placed in the second heating furnace 24 through the second tray 23. The second furnace 24 may be used to temper the rollers 01. The first roller may be used to convexity treat the roller 01. The first roller may be used for diameter treatment of the roller 01. As shown in fig. 2, a method for manufacturing a high performance roller 01 may include the steps of: the diameter of the roller to be treated can be 5.8mm, the length of the cut material can be 14.20 mm-14.28 mm, and the flatness of the two ends is less than or equal to 0.05mm by adopting a high-speed blanking machine. The roller to be treated is placed on the first tray 21, and the first tray 21 is placed in the first heating furnace 22 for oil quenching treatment. The first zone furnace temperature of the first heating furnace 22 can be 750-830 ℃, the second zone furnace temperature of the first heating furnace 22 can be 820+/-5 ℃, the third zone furnace temperature of the first heating furnace 22 can be 830+/-5 ℃, the fourth zone furnace temperature of the first heating furnace 22 can be 820+/-5 ℃, and the heat preservation time of the roller 01 can be 88-92 minutes. The partition of the first heating furnace is not shown in the drawings, and the partition method is not limited and may be equally divided in the longitudinal direction of the first heating furnace. By setting the furnace temperature and the holding time of the first heating furnace 22, the hardness of the roller 01 can be improved. The heat treatment hardness of the quenched roller 01 can reach about 61HRC, and the batch dispersion difference can be 0.5HRC, and the metallographic structure is 2-3 grade. After the oil quenched roller 01 is cleaned, the cleaned roller 01 may be placed in the second tray 23, and then the second tray 23 may be placed in the second heating furnace 24 for tempering. The first area furnace temperature of the second heating furnace 24 can be 165+/-5 ℃, the second area furnace temperature of the second heating furnace 24 can be 165+/-5 ℃, the third area furnace temperature of the second heating furnace 24 can be 165+/-5 ℃, the fourth area furnace temperature of the second heating furnace 24 can be 165+/-5 ℃, and the heat preservation time of the roller 01 can be 147-153 minutes. The partition of the second heating furnace is not shown in the drawings, and the partition method is not limited and may be equally divided in the longitudinal direction of the second heating furnace. By setting the furnace temperature and the holding time of the second heating furnace 24, the hardness of the roller 01 can be improved. The outer diameter of the tempered roller 01 is coarsely ground by adopting a centerless grinder and a double-end-face grinder, the double-end face of the roller 01 is polished, and finally the outer diameter of the roller 01 is finely ground. The roller 01 is placed in the first roller, convexity treatment can be carried out on the corners of the roller 01, and the first roller is stopped after the convexity of the roller 01 meets a set precision value. After the roller 01 is cleaned, the roller 01 subjected to convexity treatment is placed into a second roller to carry out diameter treatment on the roller 01, and the second roller is stopped after the diameter of the roller 01 meets a set diameter value. Corncob drying can be adopted to remove surface moisture. Can pick out the appearance defect products such as grinding damage, pock, cracks and the like. A classifier can be used to classify 100% by diameter 0.001mm and length 0.05mm. After the roller 01 is manufactured, a tensile testing machine is adopted to crush the single roller 01, and whether the crushing load of the roller 01 reaches the standard is detected. The crushing load of the improved roller 01 can reach 105-130 KN, the lower limit value can be increased by 25KN, the crushing load dispersion difference can be reduced to 25KN, and the lower limit value can be increased by 30%.
In some embodiments, as shown in fig. 2, the height of the height-limiting plate of the first tray 21 is less than or equal to 30mm.
In the present embodiment, as shown in fig. 2, by setting the height of the height-limiting plate of the first tray 21 to be less than or equal to 30mm, the rollers 01 can be prevented from being transferred in a vertical state when they fall onto the first tray 21, and at the same time, the first tray 21 can be stacked with only one layer of rollers 01, and the rollers 01 are heated more uniformly at the time of the oil quenching treatment in the first heating furnace 22, and the heating time is reduced.
In some embodiments, the set precision value range for convexity is: 0.012 mm-0.018 mm.
In the present embodiment, by setting the setting accuracy value of the convexity of the roller 01 to a range of 0.012mm to 0.018mm, it is possible to avoid abrasion of the inner ring and the outer ring of the bearing when the roller 01 is subsequently assembled into the roller 01 bearing.
In some embodiments, the set precision value range for the diameter is: 0 to 0.001mm.
In this embodiment, by setting the range of the setting precision value of the diameter of the roller 01 to 0 to 0.001mm, the roller 01 can be heated uniformly in the preheating process, vibration in the rotation transmission process can be reduced, and noise can be reduced.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of implementing the disclosure, and that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure.
Claims (5)
1. A high performance roller, the high performance roller comprising:
the hardness of the core part is 90% -98% of the hardness of the surface hardening layer, the hardness of the surface hardening layer is 64.0 HRC-65.5 HRC, the surface stress of the surface hardening layer is 1120-1180 KN, the crushing load of the high-performance roller is 105-130 KN, and the crushing load dispersion difference of the high-performance roller is 25KN.
2. A method of manufacturing a high performance roller according to claim 1, comprising:
and (3) feeding: placing the roller to be treated in a first tray;
quenching: placing the first material tray into a first heating furnace, wherein the first area furnace temperature of the first heating furnace is 750-830 ℃, the second area furnace temperature of the first heating furnace is 820+/-5 ℃, the third area furnace temperature of the first heating furnace is 830+/-5 ℃, the fourth area furnace temperature of the first heating furnace is 820+/-5 ℃, the heat preservation time of the roller is 88-92 minutes, and then carrying out oil quenching treatment on the roller;
cleaning: cleaning the oil quenched roller;
tempering: placing the cleaned roller into a second tray, placing the second tray into a second heating furnace, wherein the first area furnace temperature of the second heating furnace is 165+/-5 ℃, the second area furnace temperature of the second heating furnace is 165+/-5 ℃, the third area furnace temperature of the second heating furnace is 165+/-5 ℃, the fourth area furnace temperature of the second heating furnace is 165+/-5 ℃, and the heat preservation time of the roller is 147-153 minutes;
convexity treatment: placing the tempered roller into a first roller for treatment, and stopping the first roller when convexity of the roller meets a set precision value;
diameter treatment: the roller subjected to convexity treatment is placed into a second roller for treatment, and the second roller is stopped when the diameter of the roller meets a set diameter value;
and (3) detecting a finished product: crushing the manufactured roller, and detecting whether the crushing load of the roller reaches the standard.
3. The method of manufacturing according to claim 2, wherein the height of the height-limiting plate of the first tray is less than or equal to 30mm.
4. The method of manufacturing according to claim 2, wherein the range of set precision values of convexity is: 0.012 mm-0.018 mm.
5. The method of manufacturing according to claim 2, wherein the set precision value range of the diameter is: 0 to 0.001mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311432126.1A CN117145870A (en) | 2023-10-31 | 2023-10-31 | High-performance roller and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311432126.1A CN117145870A (en) | 2023-10-31 | 2023-10-31 | High-performance roller and manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117145870A true CN117145870A (en) | 2023-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311432126.1A Pending CN117145870A (en) | 2023-10-31 | 2023-10-31 | High-performance roller and manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117145870A (en) |
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| CN105134784A (en) * | 2015-08-31 | 2015-12-09 | 江苏大学 | Combined rolling body antifriction bearing capable of increasing contact wrap angles of rolling bodies |
| WO2021114536A1 (en) * | 2019-12-09 | 2021-06-17 | 江阴兴澄特种钢铁有限公司 | Steel for ball screw bearing and manufacturing method therefor |
| CN113481464A (en) * | 2021-06-22 | 2021-10-08 | 江苏力星通用钢球股份有限公司 | High-precision long-life rolling body heat treatment carburizing process |
| CN114555961A (en) * | 2019-09-26 | 2022-05-27 | Ntn株式会社 | Rolling bearing |
-
2023
- 2023-10-31 CN CN202311432126.1A patent/CN117145870A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003172364A (en) * | 2001-12-05 | 2003-06-20 | Koyo Seiko Co Ltd | Rolling bearing and manufacture of outer ring for rolling bearing |
| CN1910379A (en) * | 2004-01-15 | 2007-02-07 | Ntn株式会社 | Rolling bearing and method for heat treatment of steel |
| CN102362000A (en) * | 2009-03-25 | 2012-02-22 | Ntn株式会社 | High-strength and high-ductility steel for spring, method for producing same, and spring |
| JP2011208751A (en) * | 2010-03-30 | 2011-10-20 | Ntn Corp | Rolling bearing, method for manufacturing roller, and roller machining device |
| CN104105801A (en) * | 2011-12-08 | 2014-10-15 | Ntn株式会社 | Bearing components, rolling bearing, and methods for producing same |
| CN104718305A (en) * | 2012-10-17 | 2015-06-17 | Ntn株式会社 | Bearing element, rolling bearing and process for producing bearing element |
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