CN114855073A - High-quality die-cast wind power gear steel and preparation method thereof - Google Patents
High-quality die-cast wind power gear steel and preparation method thereof Download PDFInfo
- Publication number
- CN114855073A CN114855073A CN202210365779.1A CN202210365779A CN114855073A CN 114855073 A CN114855073 A CN 114855073A CN 202210365779 A CN202210365779 A CN 202210365779A CN 114855073 A CN114855073 A CN 114855073A
- Authority
- CN
- China
- Prior art keywords
- wind power
- power gear
- steel
- gear steel
- quality die
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 78
- 239000010959 steel Substances 0.000 title claims abstract description 78
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 23
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 18
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 18
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 229910052742 iron Inorganic materials 0.000 claims abstract description 17
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 17
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 17
- 238000004512 die casting Methods 0.000 claims abstract description 16
- 238000005242 forging Methods 0.000 claims abstract description 16
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 16
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 11
- 238000007670 refining Methods 0.000 claims abstract description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000001301 oxygen Substances 0.000 claims abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 9
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 9
- 238000013461 design Methods 0.000 claims abstract description 6
- 238000003754 machining Methods 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 238000003723 Smelting Methods 0.000 claims abstract description 5
- 238000007689 inspection Methods 0.000 claims abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 239000012496 blank sample Substances 0.000 claims description 8
- 239000013078 crystal Substances 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 4
- 238000009749 continuous casting Methods 0.000 claims description 4
- 239000010705 motor oil Substances 0.000 claims description 4
- 238000010791 quenching Methods 0.000 claims description 4
- 230000000171 quenching effect Effects 0.000 claims description 4
- 238000005496 tempering Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 13
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 2
- 239000011574 phosphorus Substances 0.000 abstract description 2
- 239000011593 sulfur Substances 0.000 abstract description 2
- 239000000306 component Substances 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 6
- 239000000956 alloy Substances 0.000 description 2
- 238000005255 carburizing Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- 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
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- 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)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses high-quality die casting wind power gear steel which comprises the following components in percentage by mass: c: 0.18-0.20%, Mn: 1.0-1.2%, Cr: 0.9-1.1%, Mo: 0.08-0.2%, Al: 0.02 to 0.04%, Ni: 0.8-1.2%, Si: 0.2-0.3%, P: less than or equal to 0.02 percent, S: 0.015-0.02%, the rest is iron and endogenetic inclusion; the preparation method comprises the following steps: composition design → electric furnace smelting → vacuum carbon deoxidation → LF refining → VD vacuum → pouring → steel ingot heating → forging → heat treatment after forging → rough machining → inspection. According to the technical scheme, by researching key processes such as material purity control and grain size control, the contents of oxygen, phosphorus and sulfur and other harmful elements in steel are effectively controlled, the high purity of the material is ensured from the source, and meanwhile, innovations and improvements are carried out on forging and heat treatment processes.
Description
Technical Field
The invention relates to the technical field of ferrous metallurgy manufacturing, in particular to high-quality die-cast wind power gear steel and a preparation method thereof.
Background
The gear steel is a general name of alloy materials for processing and manufacturing gears, is one of key materials with high requirements in special alloy materials used in the fields of wind power equipment, rail transit, mechanical equipment, automobile manufacturing, ship manufacturing and the like, takes the wind power equipment as an example, more than 80% of faults occur in a gear box and a generator, the gear box is a key component of a transmission system of the wind power equipment and is a core component for completing wind energy conversion, and the occurrence of the faults easily causes the shutdown of equipment, so that the requirements on the performance of the gear steel materials of the gear box are extremely strict.
The research strength of the gear steel on the gear penetration steel is increased abroad, so that the gear steel material has good penetration, the comprehensive performance of 'hard outside and tough inside' is obtained, the gear steel material has good formability and machinability, the heat treatment deformation of the gear steel material is small, and the later machining amount is avoided or reduced.
At present, the domestic gear steel industry has achieved great achievements through years of rapid development, but a certain gap is still formed between the high-end gear steel production and abroad, and the defects in the aspects of purity, crystal material degree, hardenability and mechanical properties are still great.
With the rapid development of national economy, the gear steel is developed towards the directions of good hardenability, high purity, high grain size grade and the like in the future and is continuously in international connection, so that the produced gear steel is suitable for the fields of wind power equipment, rail transit, mechanical equipment, automobile manufacturing, ship manufacturing and the like.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provides high-quality die casting wind power gear steel.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the high-quality die casting wind power gear steel comprises the following components in percentage by mass: c: 0.18-0.20%, Mn: 1.0-1.2%, Cr: 0.9-1.1%, Mo: 0.08-0.2%, Al: 0.02 to 0.04%, Ni: 0.8-1.2%, Si: 0.2-0.3%, P: less than or equal to 0.02 percent, S: 0.015-0.02%, the rest is iron and endogenetic inclusion;
the endogenetic inclusion comprises the following components in percentage by mass: c: 44.79%, O: 17.09%, Fe: 36.08%, Si: 0.28%, Ca: 0.32%, Cr: 0.63%, S: 0.14%, Mn: 0.40%, Ni: 0.26 percent;
the high-quality die casting wind power gear steel is heated at the temperature of more than or equal to 700 ℃ at the speed of less than or equal to 1 ℃/min, and is quenched at 950 ℃ for 80h, the grain size is 8-9 grade, and mixed crystals are avoided.
Preferably, the high-quality die-cast wind power gear steel comprises the following components in percentage by mass: c: 0.20%, Mn: 1.2%, Cr: 1.1%, Mo: 0.2%, Al: 0.04%, Ni: 1.2%, Si: 0.3%, P: 0.02%, S: 0.02% of iron and endogenous inclusions in the balance.
Preferably, the high-quality die-cast wind power gear steel comprises the following components in percentage by mass: c: 0.18%, Mn: 1.0%, Cr: 0.9%, Mo: 0.08%, Al: 0.02%, Ni: 0.8%, Si: 0.2%, P: 0.015%, S: 0.015 percent and the balance of iron and endogenous impurities.
The application also protects a preparation method of the high-quality die casting wind power gear steel, which comprises the following steps: composition design → electric furnace smelting → vacuum carbon deoxidation → LF refining → VD vacuum → pouring → steel ingot heating → forging → heat treatment after forging → rough machining → inspection.
Preferably, in the vacuum carbon deoxidation process, the original oxygen content of the molten steel is controlled to be less than 50 ppm.
Preferably, in the LF refining process, the endogenous inclusions are controlled to have a composition, by mass: c: 44.79%, O: 17.09%, Fe: 36.08%, Si: 0.28%, Ca: 0.32%, Cr: 0.63%, S: 0.14%, Mn: 0.40%, Ni: 0.26 percent.
Preferably, the content of aluminum in the VD vacuum process is controlled to be 0.03-0.04%.
Preferably, in the casting process, the prepared molten steel is cooled to 1200-1250 ℃ and then cast into a die steel blank sample; the continuous casting speed is 1.7-1.9 m/min, and the fluctuation range is +/-0.01 m/min.
Preferably, in the heat treatment process after forging, the temperature is controlled to be 920-950 ℃ and engine oil is adopted for quenching; and tempering the quenched steel blank sample.
The invention has the technical effects that: according to the technical scheme, by researching key processes such as material purity control and grain size control, the contents of oxygen, phosphorus and sulfur and other harmful elements in steel are effectively controlled, the high purity of the material is ensured from the source, and meanwhile, innovations and improvements are carried out on forging and heat treatment processes.
Through this application technical scheme, make wind-powered electricity generation gear steel purity and grain size improve greatly, improve wind-powered electricity generation gear steel's purity, satisfy the harsh requirement that wind-powered electricity generation customer provided to wind-powered electricity generation gear steel, through improving the grain size of wind-powered electricity generation gear steel, for trades such as wind-powered electricity generation host computer, track traffic improve the carburization temperature, shorten the carburization time, establish the material basis, the material performance promotes the carburization time that significantly reduces, reduce energy consumption, economic benefits is very considerable.
Oxygen content is an important index of purity in steel, so low oxygen content is always pursued, the oxygen content of molten steel is usually discharged from an electric furnace, the oxygen content of the molten steel is hundreds ppm or thousands ppm, great pressure is brought to subsequent refining operation, a plurality of deoxidizers are required to be added for reduction, and simultaneously the deoxidizers form a large amount of inclusions.
The optimized component design and pretreatment process can ensure that the 18CrNiMo7-6 steel is heated at the temperature of more than or equal to 700 ℃ at the speed of less than or equal to 1 ℃/min, the grain size of the quenched steel is 8-9 grade when the steel is kept at 950 ℃ for 80h, mixed crystal is avoided, the requirement of a wind power gear box on the grain size of a wind power gear steel material is met, and a larger space is provided for a wind power customer to increase the carburizing temperature, shorten the carburizing time, save energy and reduce consumption.
Adjusting a refining slag system, controlling slag components and inclusion properties, controlling the loss amount of aluminum in the VD process, ensuring that no aluminum is fed behind the VD furnace (in order to control the grain size of wind power gear steel, the aluminum content must be controlled to be 0.03-0.04% of certain content, so that aluminum needs to be supplemented after VD in most cases), and avoiding inclusions formed by secondary aluminum feeding.
Drawings
FIG. 1 is an electron microscope photograph of high-quality die-cast wind power gear steel obtained in example 1;
FIG. 2 shows the grain size test results of the high-quality die-cast wind power gear steel obtained in example 1;
FIG. 3 shows the results of the inclusions test in the high-quality die-cast wind power gear steel obtained in example 1.
Detailed Description
The technical solution of the present invention is further described below with reference to the following examples:
example 1
The high-quality die casting wind power gear steel comprises the following components in percentage by mass: c: 0.20%, Mn: 1.2%, Cr: 1.1%, Mo: 0.2%, Al: 0.04%, Ni: 1.2%, Si: 0.3%, P: 0.02%, S: 0.02% of iron and endogenous inclusions in the balance.
The endogenetic inclusion comprises the following components in percentage by mass: c: 44.79%, O: 17.09%, Fe: 36.08%, Si: 0.28%, Ca: 0.32%, Cr: 0.63%, S: 0.14%, Mn: 0.40%, Ni: 0.26 percent;
the high-quality die casting wind power gear steel is heated at the temperature of more than or equal to 700 ℃ at the speed of less than or equal to 1 ℃/min, and is quenched at 950 ℃ for 80h, the grain size is 8-9 grade, and mixed crystals are avoided.
The preparation method of the high-quality die-casting wind power gear steel comprises the following steps: composition design → electric furnace smelting → vacuum carbon deoxidation → LF refining → VD vacuum → pouring → steel ingot heating → forging → heat treatment after forging → rough machining → inspection.
In the vacuum carbon deoxidation process, the original oxygen content of the molten steel is controlled to be less than 50 ppm.
In the LF refining process, the endogenetic inclusion is controlled, and the endogenetic inclusion comprises the following components in percentage by mass: c: 44.79%, O: 17.09%, Fe: 36.08%, Si: 0.28%, Ca: 0.32%, Cr: 0.63%, S: 0.14%, Mn: 0.40%, Ni: 0.26 percent.
In the VD vacuum process, the aluminum content is controlled to be 0.03-0.04%.
In the casting process, the prepared molten steel is cooled to 1200-1250 ℃ and then is cast into a die steel blank sample; the continuous casting speed is 1.7-1.9 m/min, and the fluctuation range is +/-0.01 m/min.
Preferably, in the heat treatment process after forging, the temperature is controlled to be 920-950 ℃ and engine oil is adopted for quenching; and tempering the quenched steel blank sample.
Example 2
The high-quality die casting wind power gear steel comprises the following components in percentage by mass: c: 0.18%, Mn: 1.0%, Cr: 0.9%, Mo: 0.08%, Al: 0.02%, Ni: 0.8%, Si: 0.2%, P: 0.015%, S: 0.015 percent, and the balance of iron and endogenous impurities.
The endogenetic inclusion comprises the following components in percentage by mass: c: 44.79%, O: 17.09%, Fe: 36.08%, Si: 0.28%, Ca: 0.32%, Cr: 0.63%, S: 0.14%, Mn: 0.40%, Ni: 0.26 percent;
the high-quality die casting wind power gear steel is heated at the temperature of more than or equal to 700 ℃ at the speed of less than or equal to 1 ℃/min, and is quenched at 950 ℃ for 80h, the grain size is 8-9 grade, and mixed crystals are avoided.
The preparation method of the high-quality die-casting wind power gear steel comprises the following steps: composition design → electric furnace smelting → vacuum carbon deoxidation → LF refining → VD vacuum → pouring → steel ingot heating → forging → heat treatment after forging → rough machining → inspection.
In the vacuum carbon deoxidation process, the original oxygen content of the molten steel is controlled to be less than 50 ppm.
In the LF refining process, the endogenetic inclusion is controlled, and the endogenetic inclusion comprises the following components in percentage by mass: c: 44.79%, O: 17.09%, Fe: 36.08%, Si: 0.28%, Ca: 0.32%, Cr: 0.63%, S: 0.14%, Mn: 0.40%, Ni: 0.26 percent.
In the VD vacuum process, the aluminum content is controlled to be 0.03-0.04%.
In the casting process, the prepared molten steel is cooled to 1200-1250 ℃ and then is cast into a die steel blank sample; the continuous casting speed is 1.7-1.9 m/min, and the fluctuation range is +/-0.01 m/min.
In the heat treatment process after forging, the temperature is controlled to be 920-950 ℃, and engine oil is adopted for quenching; and tempering the quenched steel blank sample.
Claims (9)
1. The high-quality die casting wind power gear steel comprises the following components in percentage by mass: c: 0.18-0.20%, Mn: 1.0-1.2%, Cr: 0.9-1.1%, Mo: 0.08-0.2%, Al: 0.02 to 0.04%, Ni: 0.8-1.2%, Si: 0.2-0.3%, P: less than or equal to 0.02 percent, S: 0.015-0.02%, the rest is iron and endogenetic inclusion;
the endogenetic inclusion comprises the following components in percentage by mass: c: 44.79%, O: 17.09%, Fe: 36.08%, Si: 0.28%, Ca: 0.32%, Cr: 0.63%, S: 0.14%, Mn: 0.40%, Ni: 0.26 percent;
the high-quality die casting wind power gear steel is heated at the temperature of more than or equal to 700 ℃ at the speed of less than or equal to 1 ℃/min, and the grain size of the quenched steel is 8-9 grade after heat preservation at 950 ℃ for 80h, and mixed crystals do not exist.
2. The high-quality die casting wind power gear steel according to claim 1, wherein: the high-quality die casting wind power gear steel comprises the following components in percentage by mass: c: 0.20%, Mn: 1.2%, Cr: 1.1%, Mo: 0.2%, Al: 0.04%, Ni: 1.2%, Si: 0.3%, P: 0.02%, S: 0.02 percent, and the balance of iron and endogenous inclusions.
3. A high quality die cast wind power gear steel according to claim 1, characterized in that: the high-quality die casting wind power gear steel comprises the following components in percentage by mass: c: 0.18%, Mn: 1.0%, Cr: 0.9%, Mo: 0.08%, Al: 0.02%, Ni: 0.8%, Si: 0.2%, P: 0.015%, S: 0.015 percent, and the balance of iron and endogenous impurities.
4. A method of producing a high quality die cast wind power gear steel according to any one of claims 1 to 3, comprising the steps of: composition design → electric furnace smelting → vacuum carbon deoxidation → LF refining → VD vacuum → pouring → steel ingot heating → forging → heat treatment after forging → rough machining → inspection.
5. The preparation method of the high-quality die-cast wind power gear steel according to claim 4, characterized by comprising the following steps: in the vacuum carbon deoxidation process, the original oxygen content of the molten steel is controlled to be less than 50 ppm.
6. The preparation method of the high-quality die-cast wind power gear steel according to claim 4, characterized by comprising the following steps: in the LF refining process, the endogenetic inclusion is controlled, and the endogenetic inclusion comprises the following components in percentage by mass: c: 44.79%, O: 17.09%, Fe: 36.08%, Si: 0.28%, Ca: 0.32%, Cr: 0.63%, S: 0.14%, Mn: 0.40%, Ni: 0.26 percent.
7. The preparation method of the high-quality die-cast wind power gear steel according to claim 4, characterized by comprising the following steps: in the VD vacuum process, the aluminum content is controlled to be 0.03-0.04%.
8. The preparation method of the high-quality die-cast wind power gear steel according to claim 4, characterized by comprising the following steps: in the casting process, the prepared molten steel is cooled to 1200-1250 ℃ and then is cast into a die steel blank sample; the continuous casting speed is 1.7-1.9 m/min, and the fluctuation range is +/-0.01 m/min.
9. The preparation method of the high-quality die-cast wind power gear steel according to claim 4, characterized by comprising the following steps: in the heat treatment process after forging, the temperature is controlled to be 920-950 ℃, and engine oil is adopted for quenching; and tempering the quenched steel blank sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210365779.1A CN114855073A (en) | 2022-04-08 | 2022-04-08 | High-quality die-cast wind power gear steel and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210365779.1A CN114855073A (en) | 2022-04-08 | 2022-04-08 | High-quality die-cast wind power gear steel and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114855073A true CN114855073A (en) | 2022-08-05 |
Family
ID=82630230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210365779.1A Pending CN114855073A (en) | 2022-04-08 | 2022-04-08 | High-quality die-cast wind power gear steel and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114855073A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10152746A (en) * | 1996-11-21 | 1998-06-09 | Toa Steel Co Ltd | Boron steel gear excellent in fatigue resistance and its production |
| CN102127704A (en) * | 2011-03-02 | 2011-07-20 | 武汉钢铁(集团)公司 | 900MPa-level high-strength high-plasticity medium-carbon hot rolled steel and manufacturing method thereof |
| WO2012144423A1 (en) * | 2011-04-21 | 2012-10-26 | 山陽特殊製鋼株式会社 | Steel material for machine structural use having excellent contact pressure fatigue strength |
| CN105543645A (en) * | 2015-12-10 | 2016-05-04 | 湖州中联机械制造有限公司 | Novel materials for high-strength rocker arm of coal mining machine |
| JP2017133052A (en) * | 2016-01-26 | 2017-08-03 | 新日鐵住金株式会社 | Case hardened steel excellent in coarse particle prevention property, fatigue property and machinability during carburization and manufacturing method therefor |
| CN107201482A (en) * | 2017-04-19 | 2017-09-26 | 马鞍山市鑫龙特钢有限公司 | A kind of wind-powered electricity generation pinion steel and preparation method thereof |
| CN108531804A (en) * | 2018-03-20 | 2018-09-14 | 马鞍山钢铁股份有限公司 | A kind of sulfur-bearing al-killed pinion steel and its Morphology of Sulfide control method |
| CN109972024A (en) * | 2019-05-13 | 2019-07-05 | 中天钢铁集团有限公司 | A kind of preparation method of pinion steel Steel Bar and preparation method thereof and rod iron |
-
2022
- 2022-04-08 CN CN202210365779.1A patent/CN114855073A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10152746A (en) * | 1996-11-21 | 1998-06-09 | Toa Steel Co Ltd | Boron steel gear excellent in fatigue resistance and its production |
| CN102127704A (en) * | 2011-03-02 | 2011-07-20 | 武汉钢铁(集团)公司 | 900MPa-level high-strength high-plasticity medium-carbon hot rolled steel and manufacturing method thereof |
| WO2012144423A1 (en) * | 2011-04-21 | 2012-10-26 | 山陽特殊製鋼株式会社 | Steel material for machine structural use having excellent contact pressure fatigue strength |
| CN105543645A (en) * | 2015-12-10 | 2016-05-04 | 湖州中联机械制造有限公司 | Novel materials for high-strength rocker arm of coal mining machine |
| JP2017133052A (en) * | 2016-01-26 | 2017-08-03 | 新日鐵住金株式会社 | Case hardened steel excellent in coarse particle prevention property, fatigue property and machinability during carburization and manufacturing method therefor |
| CN107201482A (en) * | 2017-04-19 | 2017-09-26 | 马鞍山市鑫龙特钢有限公司 | A kind of wind-powered electricity generation pinion steel and preparation method thereof |
| CN108531804A (en) * | 2018-03-20 | 2018-09-14 | 马鞍山钢铁股份有限公司 | A kind of sulfur-bearing al-killed pinion steel and its Morphology of Sulfide control method |
| CN109972024A (en) * | 2019-05-13 | 2019-07-05 | 中天钢铁集团有限公司 | A kind of preparation method of pinion steel Steel Bar and preparation method thereof and rod iron |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109252097A (en) | A kind of non-hardened and tempered steel and its continuous casting manufacturing technique of high intensity fractured connecting rod | |
| CN106661705A (en) | Carburized alloy steel, method for preparing same, and use thereof | |
| CN110230006B (en) | Production method of low-phosphorus gear steel for automobile gearbox | |
| CN109338215B (en) | High-strength steel plate with thickness of 8-25 mm and low yield ratio for tank car and manufacturing method thereof | |
| CN111485167A (en) | Hot-rolled round steel for rare earth microalloyed 25MnCrNiMoA coupler yoke and production method thereof | |
| CN112899560A (en) | High-strength gear steel 23CrMnMoS and manufacturing method thereof | |
| CN102517521A (en) | MnCr carburized gear steel and its production method | |
| CN109822070B (en) | Non-oriented electrical steel for electric driving of thin slab full-endless rolling and preparation method thereof | |
| CN115807196B (en) | High-metallurgical-quality high-strength and high-toughness nitrogenous wind power gear steel and manufacturing method and application thereof | |
| KR20230059825A (en) | Low-cost, high-performance Q500 bridge steel and production method | |
| CN113957338A (en) | Magnesium-containing 45 steel and preparation process thereof | |
| CN112095051A (en) | Magnesium-calcium-tellurium composite treated free-cutting steel and preparation method and application thereof | |
| CN114959415A (en) | Manufacturing method of microalloyed wind power transmission gear steel | |
| CN113584411B (en) | Sulfur-containing ferritic stainless steel and manufacturing method thereof | |
| CN109161650B (en) | Low-alloy cast steel, manufacturing method and application thereof | |
| CN114000055A (en) | Boron microalloyed gear steel and preparation method thereof | |
| CN112853218B (en) | Steel for high-speed bullet train bogie and manufacturing method thereof | |
| WO2024051758A1 (en) | Method for preparing steel 50crva for transmission chain of engine | |
| CN109930064B (en) | Corrosion-resistant heat-resistant steel for high-pressure boiler pipe and production method thereof | |
| WO2023179058A1 (en) | 7ni steel and production method therefor | |
| CN114855073A (en) | High-quality die-cast wind power gear steel and preparation method thereof | |
| CN113832404B (en) | Boron-containing high-performance gear forging and production method thereof | |
| CN104928588A (en) | High-temperature carburizing steel and melting method | |
| CN113817951A (en) | Production process of continuous casting gear steel bar for rail transit | |
| CN112853217B (en) | Steel for high-speed motor car bogie and smelting method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220805 |
|
| RJ01 | Rejection of invention patent application after publication |