CN114939664A - High-strength wear-resistant gear machining process - Google Patents
High-strength wear-resistant gear machining process Download PDFInfo
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- CN114939664A CN114939664A CN202210579023.7A CN202210579023A CN114939664A CN 114939664 A CN114939664 A CN 114939664A CN 202210579023 A CN202210579023 A CN 202210579023A CN 114939664 A CN114939664 A CN 114939664A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/09—Mixtures of metallic powders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/08—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of toothed articles, e.g. gear wheels; of cam discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/248—Thermal after-treatment
-
- 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
Abstract
The invention discloses a high-strength wear-resistant gear processing technology, which is formed by assembling a substrate and a plurality of toothed bars, wherein the substrate is made of 30-50 parts of quenched steel block, 5-10 parts of nickel powder, 5-10 parts of tungsten powder, 1-3 parts of niobium powder, 5-10 parts of titanium powder with 200 meshes and 5-10 parts of iron powder which are taken as main raw materials, and the gear is made of iron-molybdenum alloy. The inside spiral air current guide piece of welding of installation additional of aperture can produce the air current when gear rotation uses, carries out the heat dissipation to the gear and handles, prolongs the life of gear.
Description
Technical Field
The invention relates to the field of gear preparation, in particular to a high-strength wear-resistant gear processing technology.
Background
Gear refers to a mechanical element on a rim with gears continuously engaged to transmit motion and power. The use of gears in transmissions has long emerged. The development of the 19 th century has led to the continuous emergence of the principle of generating the cutting method and the special machine tools and tools for cutting teeth by using the principle, and with the development of production, the smoothness of the operation of gears is regarded, and the gears are toothed mechanical parts capable of meshing with each other, and have wide application in the mechanical transmission and the whole mechanical field. Modern gear technology has reached: the gear module is 0.004-100 mm; the diameter of the gear is 1 mm-150 m; the transmission power can reach hundreds of thousands of kilowatts; the rotating speed can reach hundreds of thousands of revolutions per minute; the highest peripheral speed amounts to 300 m/s.
With the continuous development of modern industry, various gears appear and are widely applied to the field of machining, and flat gears, bevel gears, sector gears and the like are common.
Regardless of the type of gear, the methods of gear machining are generally divided into two major types, forming and generating, the forming method being a method of cutting out a tooth profile, such as tooth milling, using a forming cutter that completely conforms to the shape of the tooth groove to be cut; the generating rule is a processing method for cutting tooth shapes by utilizing the mutual meshing motion of a cutter and a driven gear, such as hobbing and gear shaping, because the gear needs to be used for a long period, high strength and high wear resistance are always important parameters for processing the gear, in the current processing technology, the improvement of the high strength and the high wear resistance of the gear is generally realized by quenching, while the existing gear base body is generally made of steel alloy, and the gear is difficult to meet the current higher strength and stricter industrial standard, so the processing technology of the high strength wear-resistant gear needs to be provided.
Disclosure of Invention
The invention aims to provide a high-strength wear-resistant gear machining process to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a high-strength wear-resistant gear processing technology is disclosed, the gear is assembled by a substrate and a plurality of toothed bars, the substrate is made by using 30-50 parts of quenched steel block, 5-10 parts of nickel powder, 5-10 parts of tungsten powder, 1-3 parts of niobium powder, 5-10 parts of titanium powder with 200 meshes and 5-10 parts of iron powder as main raw materials, the gear is made of iron-molybdenum alloy, and the specific processing steps are as follows:
s1: mixing, refining and crushing: mixing 5-10 parts of quenched steel blocks, nickel powder, tungsten powder, niobium powder, titanium powder and iron powder, putting the mixture into an ultrafine grinder, and further grinding and grinding the mixture to obtain a mixed blank;
s2: forging and blank making: injecting the mixed blank obtained in the step S1 into die forging equipment through a wax injection machine to form a substrate model, demolding through a thimble structure after molding, and cooling the prepared substrate model in cooling water;
s3: isothermal normalizing, namely putting the cooled substrate model into a normalizing electric furnace, preheating the electric furnace to 500 ℃, then preserving heat, preserving heat for 30 minutes, vacuumizing for heating, heating to 900-950 ℃, preserving heat for 5-7 hours, cutting off the power after preserving heat, closing a vacuumizing valve, introducing rare gas into the vacuumizing valve for accelerated cooling, discharging the substrate model after cooling the gas for a period of time, and externally connecting a cooling fan for cooling the substrate;
s4: the method comprises the following steps of (1) lathe processing, namely placing a substrate model subjected to normalizing in a clamping assembly of a numerical control machine, polishing, grinding and grinding the substrate respectively, carrying out surface treatment on the substrate, placing the substrate on a punching machine after the surface treatment, punching the center of the substrate, punching the surface of the substrate at equal intervals through a small-size punch rod after the punching is finished, enabling holes to be distributed on the surface of the substrate at equal intervals and to surround a central mounting hole, and selecting and using handheld grinders with different specifications to grind the central mounting hole and a plurality of small holes so as to eliminate burrs and rim charge on the inner wall of the hole;
s5: rolling and gear shaping, namely selecting a gear hobbing machine and a gear shaping machine to fixedly install the toothed bars on the outer wall of the substrate at equal intervals, selecting the number of the toothed bars to be rolled and inserted according to actual application, shaving after the rolling and inserting are finished, modifying and adjusting the toothed bars by adopting a radial gear shaving machine, and performing thermal welding and reinforcing on a connecting gap between the toothed bars and the substrate by using a thermal welding machine after the modification;
s6: the heat dissipation treatment is carried out, wherein a spiral airflow guide piece is additionally arranged in each small hole and welded in the inner wall of the small hole by using a handheld welding gun, and airflow can be generated when the gear rotates for use to carry out heat dissipation treatment on the gear;
s7: hot dipping treatment, namely putting the gear into an annealing furnace for high-temperature homogenization treatment, heating the gear to 120-160 ℃ within 2 hours, then continuing to heat to 600-800 ℃, slowly reducing the temperature to 20-25 ℃ after keeping the temperature for a period of time, and taking out the gear after continuing to keep the temperature for 20 minutes;
s8: spraying, namely uniformly spraying phenolic aldehyde paint resistant on the upper surface and the lower surface of the gear by using a spray gun, heating after spraying, and forming the paint on the upper surface and the lower surface of the gear after cooling to form a protective coating;
s9: and (5) flushing.
Preferably, the raw material formula 1 of the gear is as follows: 30-50 parts of nickel powder, 5-10 parts of tungsten powder, 1-3 parts of niobium powder, 5-10 parts of titanium powder with 200 meshes and 5-10 parts of iron powder
| Starting materials | Variety of raw materials | Specific gravity of | Parts by weight of |
| Quenched steel block | Quenched alloy | / | 30 |
| Nickel powder | Metal | / | 5 |
| Tungsten powder | Metal | / | 5 |
| Niobium powder | Metal | / | 1 |
| Titanium powder | Metal | / | 5 |
| Iron powder | Metal | / | 5 |
| Iron-molybdenum alloy | Alloy (I) | / | / |
Preferably, the raw material formula 2 of the gear is as follows:
preferably, the raw material formula 3 of the gear is as follows:
| raw materials | Variety of raw material | Specific gravity of | Parts by weight |
| Quenched steel block | Quenched alloy | / | 50 |
| Nickel powder | Metal | / | 10 |
| Tungsten powder | Metal | / | 10 |
| Niobium powder | Metal | / | 3 |
| Titanium powder | Metal | / | 10 |
| Iron powder | Metal | / | 10 |
| Iron-molybdenum alloy | Alloy (I) | / | / |
Preferably, in step S2, the swaging apparatus may be one of a flat forging press, an on-hammer swaging press and a friction press.
Preferably, in step S6, the spiral airflow guide piece is made of a copper alloy metal material.
The invention has the technical effects and advantages that: a high-strength wear-resistant gear machining process is characterized in that nickel powder, tungsten powder, niobium powder, titanium powder, iron powder and other metal materials are selected on the basis of a quenched steel raw material, the high-temperature resistance of a gear body can be greatly improved by adding tungsten, the corrosion resistance and the strength of the gear can be greatly improved by niobium and titanium, and the mechanical property of the gear is improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a high-strength wear-resistant gear processing technology, which is formed by assembling a substrate and a plurality of toothed bars, wherein the substrate is prepared by taking 30-50 parts of quenched steel blocks, 5-10 parts of nickel powder, 5-10 parts of tungsten powder, 1-3 parts of niobium powder, 5-10 parts of titanium powder with 200 meshes and 5-10 parts of iron powder as main raw materials, and the gear is prepared from iron-molybdenum alloy, and the specific processing steps are as follows:
s1: mixing, refining and crushing: mixing 5-10 parts of quenched steel blocks, nickel powder, tungsten powder, niobium powder, titanium powder and iron powder, putting the mixture into an ultrafine grinder, and further grinding and grinding the mixture to obtain a mixed blank;
s2: forging and blank making: injecting the mixed blank obtained in the step S1 into die forging equipment through a wax injection machine to form a substrate model, demolding through a thimble structure after molding, and cooling the prepared substrate model in cooling water;
s3: isothermal normalizing, namely putting the cooled substrate model into a normalizing electric furnace, preheating the electric furnace to 500 ℃, then preserving heat, preserving heat for 30 minutes, vacuumizing for heating, heating to 900-950 ℃, preserving heat for 5-7 hours, cutting off the power after preserving heat, closing a vacuumizing valve, introducing rare gas into the vacuumizing valve for accelerated cooling, discharging the substrate model after cooling the gas for a period of time, and externally connecting a cooling fan for cooling the substrate;
s4: the method comprises the following steps of (1) lathe processing, namely placing a substrate model subjected to normalizing in a clamping assembly of a numerical control machine, polishing, grinding and grinding the substrate respectively, carrying out surface treatment on the substrate, placing the substrate on a punching machine after the surface treatment, punching the center of the substrate, punching the surface of the substrate at equal intervals through a small-size punch rod after the punching is finished, enabling holes to be distributed on the surface of the substrate at equal intervals and to surround a central mounting hole, and selecting and using handheld grinders with different specifications to grind the central mounting hole and a plurality of small holes so as to eliminate burrs and rim charge on the inner wall of the hole;
s5: rolling and gear shaping, namely selecting a gear hobbing machine and a gear shaping machine to fixedly install the toothed bars on the outer wall of the substrate at equal intervals, selecting the number of the toothed bars to be rolled and inserted according to actual application, shaving after the rolling and inserting are finished, modifying and adjusting the toothed bars by adopting a radial gear shaving machine, and performing thermal welding and reinforcing on a connecting gap between the toothed bars and the substrate by using a thermal welding machine after the modification;
s6: the heat dissipation treatment is carried out, wherein a spiral airflow guide piece is additionally arranged in each small hole and welded in the inner wall of the small hole by using a handheld welding gun, and airflow can be generated when the gear rotates for use to carry out heat dissipation treatment on the gear;
s7: hot dipping treatment, namely putting the gear into an annealing furnace for high-temperature homogenization treatment, heating the gear to 120-160 ℃ within 2 hours, then continuing to heat to 600-800 ℃, slowly reducing the temperature to 20-25 ℃ after keeping the temperature for a period of time, and taking out the gear after continuing to keep the temperature for 20 minutes;
s8: spraying, namely uniformly spraying phenolic aldehyde paint resistant on the upper surface and the lower surface of the gear by using a spray gun, heating after spraying, and forming the paint on the upper surface and the lower surface of the gear after cooling to form a protective coating;
s9: and (5) flushing.
In the first embodiment, the raw material formula 1 of the gear is as follows: 30-50 parts of nickel powder, 5-10 parts of tungsten powder, 1-3 parts of niobium powder, 5-10 parts of titanium powder with 200 meshes and 5-10 parts of iron powder
In the second embodiment, the raw material formula 2 of the gear is as follows:
| raw materials | Variety of raw material | Specific gravity of | Parts by weight |
| Quenched steel block | Quenched alloy | / | 40 |
| Nickel powder | Metal | / | 8 |
| Tungsten powder | Metal | / | 8 |
| Niobium powder | Metal | / | 2 |
| Titanium powder | Metal | / | 8 |
| Iron powder | Metal | / | 8 |
| Iron-molybdenum alloy | Alloy (II) | / | / |
In the third embodiment, the raw material formula 3 of the gear is as follows:
| raw materials | Variety of raw materials | Specific gravity of | Parts by weight |
| Quenched steel block | Quenched alloy | / | 50 |
| Nickel powder | Metal | / | 10 |
| Tungsten powder | Metal | / | 10 |
| Niobium powder | Metal | / | 3 |
| Titanium powder | Metal | / | 10 |
| Iron powder | Metal | / | 10 |
| Iron-molybdenum alloy | Alloy (I) | / | / |
In a fourth embodiment, in step S2, the swaging apparatus may be one of a horizontal forging machine, an on-hammer swaging machine, and a friction press swaging machine, and in step S6, the spiral airflow guiding plate is made of a copper alloy metal material.
In conclusion, the high-strength wear-resistant gear processing technology provided by the invention selects nickel powder, tungsten powder, niobium powder, titanium powder, iron powder and other metal materials on the basis of the quenched steel raw material, the high-temperature resistance of a gear body can be greatly improved by adding tungsten, the corrosion resistance and the strength of the gear can be greatly improved by adding niobium and titanium, thereby improving the mechanical property of the gear, the invention also sets a hot dipping process, the gear is subjected to high-temperature homogenization heat treatment and then is cooled and insulated, thereby strengthening the crystal grain structure, simultaneously changing the crystal grain structure and distribution, further improving the strength of the gear, by arranging the turning process and arranging a plurality of small holes on the surface of the substrate, the spiral air flow guide piece is additionally welded inside the small holes, the gear cooling device can generate air flow when the gear rotates for use, and can perform heat dissipation treatment on the gear, so that the service life of the gear is prolonged.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
The standard parts used by the invention can be purchased from the market, and the special-shaped parts can be customized according to the description of the specification.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A high-strength wear-resistant gear processing technology is characterized in that the gear is formed by assembling a substrate and a plurality of toothed bars, the substrate is made of main raw materials of 30-50 parts of quenched steel blocks, 5-10 parts of nickel powder, 5-10 parts of tungsten powder, 1-3 parts of niobium powder, 5-10 parts of titanium powder with 200 meshes and 5-10 parts of iron powder, and the gear is made of iron-molybdenum alloy, and the specific processing steps are as follows:
s1: mixing, refining and crushing: mixing 5-10 parts of quenched steel blocks, nickel powder, tungsten powder, niobium powder, titanium powder and iron powder, putting the mixture into an ultrafine grinder, and further grinding and grinding the mixture to obtain a mixed blank;
s2: forging and blank making: injecting the mixed blank obtained in the step S1 into die forging equipment through a wax injection machine to form a substrate model, demolding through a thimble structure after molding, and cooling the prepared substrate model in cooling water;
s3: isothermal normalizing, namely putting the cooled substrate model into a normalizing electric furnace, preheating the electric furnace to 500 ℃, then preserving heat, preserving heat for 30 minutes, vacuumizing for heating, heating to 900-950 ℃, preserving heat for 5-7 hours, cutting off the power after preserving heat, closing a vacuumizing valve, introducing rare gas into the vacuumizing valve for accelerated cooling, discharging the substrate model after cooling the gas for a period of time, and externally connecting a cooling fan for cooling the substrate;
s4: the method comprises the following steps of (1) lathe processing, namely placing a substrate model subjected to normalizing in a clamping assembly of a numerical control machine, polishing, grinding and grinding the substrate respectively, carrying out surface treatment on the substrate, placing the substrate on a punching machine after the surface treatment, punching the center of the substrate, punching the surface of the substrate at equal intervals through a small-size punch rod after the punching is finished, enabling holes to be distributed on the surface of the substrate at equal intervals and to surround a central mounting hole, and selecting and using handheld grinders with different specifications to grind the central mounting hole and a plurality of small holes so as to eliminate burrs and rim charge on the inner wall of the hole;
s5: rolling and gear shaping, namely selecting a gear hobbing machine and a gear shaping machine to fixedly install the toothed bars on the outer wall of the substrate at equal intervals, selecting the number of the toothed bars to be rolled and inserted according to actual application, shaving after the rolling and inserting are finished, modifying and adjusting the toothed bars by adopting a radial gear shaving machine, and performing thermal welding and reinforcing on a connecting gap between the toothed bars and the substrate by using a thermal welding machine after the modification;
s6: the heat dissipation treatment is carried out, wherein a spiral airflow guide sheet is additionally arranged in each small hole and is welded in the inner wall of the small hole by using a handheld welding gun, so that airflow can be generated when the gear rotates for use, and the heat dissipation treatment is carried out on the gear;
s7: hot dipping treatment, namely putting the gear into an annealing furnace for high-temperature homogenization treatment, heating the gear to 120-160 ℃ within 2 hours, then continuing to heat to 600-800 ℃, slowly reducing the temperature to 20-25 ℃ after keeping the temperature for a period of time, and taking out the gear after continuing to keep the temperature for 20 minutes;
s8: spraying, namely uniformly spraying phenolic aldehyde paint resistant on the upper surface and the lower surface of the gear by using a spray gun, heating after spraying, and forming the paint on the upper surface and the lower surface of the gear after cooling to form a protective coating;
s9: and (5) flushing.
2. The process for machining the high-strength wear-resistant gear according to claim 1, wherein the gear is prepared from the following raw materials in a formula 1: 30-50 parts of nickel powder, 5-10 parts of tungsten powder, 1-3 parts of niobium powder, 5-10 parts of titanium powder with 200 meshes and 5-10 parts of iron powder
3. The process for machining a high-strength wear-resistant gear according to claim 1, wherein the gear is prepared from the following raw materials in formula 2:
4. the process for machining a high-strength wear-resistant gear according to claim 1, wherein the gear is prepared from the following raw materials in formula 3:
5. The process of claim 1, wherein in step S2, the swaging apparatus is selected from one of swaging using a flat forging press, swaging on a hammer, and swaging using a friction press.
6. The process of claim 1, wherein in step S6, the spiral air guide plates are made of copper alloy metal.
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|---|---|---|---|
| CN202210579023.7A CN114939664A (en) | 2022-05-26 | 2022-05-26 | High-strength wear-resistant gear machining process |
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|---|---|---|---|
| CN202210579023.7A CN114939664A (en) | 2022-05-26 | 2022-05-26 | High-strength wear-resistant gear machining process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115929870A (en) * | 2022-11-15 | 2023-04-07 | 江苏睿思特传动机械有限公司 | High-efficient wear-resisting type gear |
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| US5516376A (en) * | 1993-05-26 | 1996-05-14 | Nissan Motor Co., Ltd. | Method of, and apparatus for manufacturing a gear with a central through hole |
| JPH09310142A (en) * | 1996-05-20 | 1997-12-02 | Hitachi Koki Co Ltd | High strength and wear resistant sintered mechanism element |
| KR20110039410A (en) * | 2009-10-10 | 2011-04-18 | 조상철 | Metal alloy for a crane wheel and method of munufacturing the crane wheel using the alloy |
| CN107435124A (en) * | 2016-05-27 | 2017-12-05 | 鲍凡凡 | High tungsten ledeburite pinion steel of hard high-wearing feature and preparation method thereof |
| CN108607997A (en) * | 2018-05-14 | 2018-10-02 | 洪新阳 | A kind of processing technology of gear |
| CN109722600A (en) * | 2019-02-19 | 2019-05-07 | 益阳市再超粉末冶金有限公司 | A kind of powder metallurgy makes the forming method of automobile variable speed tooth case gear stand |
| CN111549206A (en) * | 2020-05-11 | 2020-08-18 | 张家港广大特材股份有限公司 | Heat treatment process for high-wear-resistance antirust gear steel |
| CN113737080A (en) * | 2021-09-03 | 2021-12-03 | 浙江天鸿传动机械有限公司 | High-strength wear-resistant gear material and preparation method thereof |
-
2022
- 2022-05-26 CN CN202210579023.7A patent/CN114939664A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5516376A (en) * | 1993-05-26 | 1996-05-14 | Nissan Motor Co., Ltd. | Method of, and apparatus for manufacturing a gear with a central through hole |
| JPH09310142A (en) * | 1996-05-20 | 1997-12-02 | Hitachi Koki Co Ltd | High strength and wear resistant sintered mechanism element |
| KR20110039410A (en) * | 2009-10-10 | 2011-04-18 | 조상철 | Metal alloy for a crane wheel and method of munufacturing the crane wheel using the alloy |
| CN107435124A (en) * | 2016-05-27 | 2017-12-05 | 鲍凡凡 | High tungsten ledeburite pinion steel of hard high-wearing feature and preparation method thereof |
| CN108607997A (en) * | 2018-05-14 | 2018-10-02 | 洪新阳 | A kind of processing technology of gear |
| CN109722600A (en) * | 2019-02-19 | 2019-05-07 | 益阳市再超粉末冶金有限公司 | A kind of powder metallurgy makes the forming method of automobile variable speed tooth case gear stand |
| CN111549206A (en) * | 2020-05-11 | 2020-08-18 | 张家港广大特材股份有限公司 | Heat treatment process for high-wear-resistance antirust gear steel |
| CN113737080A (en) * | 2021-09-03 | 2021-12-03 | 浙江天鸿传动机械有限公司 | High-strength wear-resistant gear material and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115929870A (en) * | 2022-11-15 | 2023-04-07 | 江苏睿思特传动机械有限公司 | High-efficient wear-resisting type gear |
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