CN114058818A - Rolling and heat treatment method of 55Ni40Cr3Al bearing steel - Google Patents
Rolling and heat treatment method of 55Ni40Cr3Al bearing steel Download PDFInfo
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- CN114058818A CN114058818A CN202111289435.9A CN202111289435A CN114058818A CN 114058818 A CN114058818 A CN 114058818A CN 202111289435 A CN202111289435 A CN 202111289435A CN 114058818 A CN114058818 A CN 114058818A
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- rolling
- heat treatment
- bearing steel
- temperature
- heat
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- 238000005096 rolling process Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000010438 heat treatment Methods 0.000 title claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 23
- 239000010959 steel Substances 0.000 title claims abstract description 23
- 230000032683 aging Effects 0.000 claims abstract description 10
- 238000005242 forging Methods 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 229910052729 chemical element Inorganic materials 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
Classifications
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
-
- 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
-
- 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
- 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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Heat Treatment Of Steel (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a rolling and heat treatment method of 55Ni40Cr3Al bearing steel, which comprises the following heat treatment procedures before rolling: heating the forging stock to 600 +/-20 ℃, preserving heat, heating to 1160 +/-20 ℃ along with a furnace, and preserving heat; a rolling procedure: firstly, carrying out primary rolling on the forged blank at 1140-1160 ℃, and then carrying out finish rolling forming at 1160-1180 ℃ to obtain a rolled bar; and (3) aging treatment: and (4) keeping the temperature of the rolled bar at 540-560 ℃, and finally air-cooling. The tensile strength of the 55Ni40Cr3Al rolled bar obtained by the method is 1350-1500 MPa, the elongation after rolling is 1000-3000%, the reduction of area is 90-97%, and the hardness HRC is 59.5-61.5.
Description
Technical Field
The invention relates to a rolling and heat treatment method, in particular to a rolling and heat treatment method of 55Ni40Cr3Al bearing steel.
Background
The 55Ni40Cr3Al bearing steel is high-temperature bearing steel, has good high-temperature hardness, and the rare earth elements La and Ce added in the components can reduce the grain size, improve the strength and yield strength of the steel, so that the steel can have good wear resistance and dimensional stability at higher temperature. However, when the 55Ni40Cr3Al steel is rolled by a conventional rolling method, the problems of low cast ingot plasticity, easy breakage, uneven structure, coarse grains, low yield and the like often occur, so that the problems of high production cost, poor high-temperature service performance and the like are caused.
Disclosure of Invention
In order to solve the technical problems, the invention provides a rolling and heat treatment method of 55Ni40Cr3Al bearing steel, which can improve the yield and service life of the 55Ni40Cr3Al bearing steel.
The technical scheme adopted by the invention is as follows:
a rolling and heat treatment method of 55Ni40Cr3Al bearing steel comprises the working procedures of heat treatment before rolling, rolling and aging treatment;
a pre-rolling heat treatment process: heating the forging stock to 600 +/-20 ℃, and preserving heat; then heating to 1160 +/-20 ℃ along with the furnace, and preserving heat;
a rolling procedure: firstly, carrying out primary rolling on the forged blank at 1140-1160 ℃, and then carrying out finish rolling forming at 1160-1180 ℃ to obtain a rolled bar;
and (3) aging treatment: and (4) keeping the temperature of the rolled bar at 540-560 ℃, and finally air-cooling.
In the pre-rolling heat treatment process, the temperature is kept at 600 +/-20 ℃ for 40-60 min, and the temperature is kept at 1160 +/-20 ℃ for 120-150 min.
And in the aging treatment process, the temperature is kept for 6-8 h.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: the heat treatment process before rolling of the invention sets twice heat preservation to enable the 55Ni40Cr3Al bearing steel matrix structure to have good stress state, the heat preservation at 600 +/-20 ℃ is for the temperature equalization of the forging stock, the excessive temperature difference between the inside and the outside during the heating of the forging stock is prevented, the heat preservation at 1160 +/-20 ℃ is for reducing alpha-Cr phase particles in the matrix, the excessive alpha-Cr phase particles easily cause the reduction of hot processing performance, and the successful completion of the subsequent hot processing is ensured through twice temperature equalization; the rolling process can lead the rolling bar to have more uniform and stable structure and more refined grains; by aging treatment, not only is the sufficient precipitation of the hardening phase ensured, but also the material is ensured to have high enough hardness.
The 55Ni40Cr3Al steel rolled bar obtained by the invention is tested for room temperature tensile property, and has the tensile strength of 1350-1500 MPa, the elongation after rolling of 1000-3000%, the reduction of area of 90-97% and the hardness of HRC of 59.5-61.5.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments.
Examples 1 to 8: the rolling and heat treatment method of the 55Ni40Cr3Al bearing steel of the present invention is specifically described below.
(1) The 55Ni40Cr3Al bearing steel comprises the following main chemical elements in percentage by weight: 0.01 to 0.03 percent of C, less than or equal to 0.30 percent of Mn, less than or equal to 0.30 percent of Si, less than or equal to 0.030 percent of S, less than or equal to 0.030 percent of P, less than or equal to 0.010 percent of rare earth, 39.0 to 41.0 percent of Cr, 2.70 to 3.30 percent of Al and the balance of Ni. The main chemical elements of the 55Ni40Cr3Al bearing steel described in each example are shown in Table 1.
TABLE 1 main chemical elements (wt%) of each example 55Ni40Cr3Al
(2) The rolling and heat treatment method of the 55Ni40Cr3Al bearing steel comprises the steps of pre-forging heat treatment, rolling and aging treatment, and the processes of the steps are as follows:
A. a pre-rolling heat treatment process: and (3) preserving the temperature of the forging stock at 600 +/-20 ℃ for 40-60 min, and then preserving the temperature at 1160 +/-20 ℃ for 120-150 min.
B. A rolling procedure: firstly, carrying out primary rolling on the forged blank at 1140-1160 ℃, and then carrying out finish rolling forming at 1160-1180 ℃ to obtain a rolled bar;
C. and (3) aging treatment: and (3) preserving the heat of the rolled bar at 540-560 ℃ for 6-8 h, and air-cooling to room temperature to obtain a finished product of the 55Ni40Cr3Al bearing steel rolled bar.
D. The specific process of each example is shown in table 2.
TABLE 2 specific Process for the examples
(3) The finished products of the 55Ni40Cr3Al bearing steel rolled bars obtained in the embodiments are subjected to room temperature tensile property detection, and the detection results are shown in Table 3.
TABLE 3 test results of 55Ni40Cr3Al rolled bars obtained in each example
Claims (3)
1. A rolling and heat treatment method of 55Ni40Cr3Al bearing steel is characterized in that: the method comprises the working procedures of heat treatment before rolling, rolling and aging treatment;
a pre-rolling heat treatment process: heating the forging stock to 600 +/-20 ℃, and preserving heat; then heating to 1160 +/-20 ℃ along with the furnace, and preserving heat;
a rolling procedure: firstly, carrying out primary rolling on the forged blank at 1140-1160 ℃, and then carrying out finish rolling forming at 1160-1180 ℃ to obtain a rolled bar;
and (3) aging treatment: and (4) keeping the temperature of the rolled bar at 540-560 ℃, and finally air-cooling.
2. The method for rolling and heat-treating 55Ni40Cr3Al bearing steel according to claim 1, wherein: in the pre-rolling heat treatment process, the temperature is kept at 600 +/-20 ℃ for 40-60 min, and the temperature is kept at 1160 +/-20 ℃ for 120-150 min.
3. The method for rolling and heat-treating 55Ni40Cr3Al bearing steel according to claim 1 or 2, wherein: and in the aging treatment process, the temperature is kept for 6-8 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111289435.9A CN114058818A (en) | 2021-11-02 | 2021-11-02 | Rolling and heat treatment method of 55Ni40Cr3Al bearing steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111289435.9A CN114058818A (en) | 2021-11-02 | 2021-11-02 | Rolling and heat treatment method of 55Ni40Cr3Al bearing steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114058818A true CN114058818A (en) | 2022-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111289435.9A Pending CN114058818A (en) | 2021-11-02 | 2021-11-02 | Rolling and heat treatment method of 55Ni40Cr3Al bearing steel |
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| CN (1) | CN114058818A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115386695A (en) * | 2022-08-30 | 2022-11-25 | 河钢股份有限公司 | Rolling and heat treatment method of 30Ni15Cr2Ti2Al alloy |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101186995A (en) * | 2007-10-15 | 2008-05-28 | 莱芜钢铁集团有限公司 | Medium carbon bearing steel and its preparation method |
| CN101565801A (en) * | 2008-04-22 | 2009-10-28 | 宝山钢铁股份有限公司 | High-carbon-chromium bearing steel and manufacture method thereof |
| US20140116581A1 (en) * | 2011-04-29 | 2014-05-01 | Aktiebolaget Skf | Heat-Treatment of an Alloy for a Bearing Component |
| CN110423955A (en) * | 2019-07-29 | 2019-11-08 | 中国航发北京航空材料研究院 | The heat-resisting gear-bearing steel of the super constrictive type superhigh intensity in surface layer and preparation method |
| WO2020073576A1 (en) * | 2018-10-09 | 2020-04-16 | 江阴兴澄特种钢铁有限公司 | Steel for wind turbine main shaft bearing and production method therefor |
| CN112828236A (en) * | 2020-12-29 | 2021-05-25 | 河钢股份有限公司 | Forging and heat treatment method of 55Ni40Cr3Al bearing steel |
| CN113083936A (en) * | 2021-02-25 | 2021-07-09 | 江阴兴澄合金材料有限公司 | High-carbon chromium bearing steel wire rod with diameter less than or equal to 10mm and capable of meeting large-area-reduction-rate hot rolling straight pulling and production method thereof |
-
2021
- 2021-11-02 CN CN202111289435.9A patent/CN114058818A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101186995A (en) * | 2007-10-15 | 2008-05-28 | 莱芜钢铁集团有限公司 | Medium carbon bearing steel and its preparation method |
| CN101565801A (en) * | 2008-04-22 | 2009-10-28 | 宝山钢铁股份有限公司 | High-carbon-chromium bearing steel and manufacture method thereof |
| US20140116581A1 (en) * | 2011-04-29 | 2014-05-01 | Aktiebolaget Skf | Heat-Treatment of an Alloy for a Bearing Component |
| WO2020073576A1 (en) * | 2018-10-09 | 2020-04-16 | 江阴兴澄特种钢铁有限公司 | Steel for wind turbine main shaft bearing and production method therefor |
| CN110423955A (en) * | 2019-07-29 | 2019-11-08 | 中国航发北京航空材料研究院 | The heat-resisting gear-bearing steel of the super constrictive type superhigh intensity in surface layer and preparation method |
| CN112828236A (en) * | 2020-12-29 | 2021-05-25 | 河钢股份有限公司 | Forging and heat treatment method of 55Ni40Cr3Al bearing steel |
| CN113083936A (en) * | 2021-02-25 | 2021-07-09 | 江阴兴澄合金材料有限公司 | High-carbon chromium bearing steel wire rod with diameter less than or equal to 10mm and capable of meeting large-area-reduction-rate hot rolling straight pulling and production method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115386695A (en) * | 2022-08-30 | 2022-11-25 | 河钢股份有限公司 | Rolling and heat treatment method of 30Ni15Cr2Ti2Al alloy |
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Application publication date: 20220218 |