CN103223484B - A kind of P/m Gear Wheel With Special Shape and preparation method thereof - Google Patents
A kind of P/m Gear Wheel With Special Shape and preparation method thereof Download PDFInfo
- Publication number
- CN103223484B CN103223484B CN201310107604.1A CN201310107604A CN103223484B CN 103223484 B CN103223484 B CN 103223484B CN 201310107604 A CN201310107604 A CN 201310107604A CN 103223484 B CN103223484 B CN 103223484B
- Authority
- CN
- China
- Prior art keywords
- powder
- special shape
- gear wheel
- hour
- iron
- 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.)
- Active
Links
Landscapes
- Powder Metallurgy (AREA)
- Gears, Cams (AREA)
Abstract
The invention provides a kind of P/m Gear Wheel With Special Shape, suppressed forming by the powder stock of following weight portion: iron powder 100, copper powder 1.8-2.0, molybdenum powder 0.5-0.8, vanadium powder 0.1-0.3, nickel powder 0.8-1.2, graphite powder 0.5-0.8, modification tree ash 0.1-0.3, rare earth ferrosilicon alloy 0.2-0.6, Cr powder 0.1-0.3, ethylene bis stearic acid amide 0.1-0.2, silica flour 0.1-0.3, yttrium powder 0.2-0.4, boron nitride 0.2-0.4, molybdenum sulfide 0.4-0.5.First substep mixing is carried out to powder stock during preparation, then final products special shape gear is obtained after repressed, sintering, heat treatment, surface treatment, it is good that the P/m Gear Wheel With Special Shape produced has wearability, intensity is high, hardness is high, machinability is good, corrosion-resistant, not easily occur fracture, the feature of long service life.
Description
Technical field
The present invention relates to field of powder metallurgy, be specifically related to a kind of P/m Gear Wheel With Special Shape and preparation method thereof.
Background technology
PM technique, with the parts of the shape production requirement high dimensional accuracy extremely close with article shape, complicated shape, can reduce cutting cost significantly.Therefore, sintered metal product as various machinery, device parts and utilize in many-side.
Generally speaking, the alloy powder such as mixing graphite powder and the lubricant powder such as stearic acid, Cr powder in iron-based powder and after forming iron-based powder mixed powder, this iron-based powder mixed powder is filled into metal die, press molding and the metallurgy iron-based powder formed body (powder compact) that makes powder.Wherein, iron-based powder can be divided into iron powder (straight iron powder etc.), powdered alloy steel etc. according to composition.Further, iron-based powder also can be divided into atomized iron powder, reduced iron powder etc. according to manufacture method.The density of iron-based powder formed body is generally 6.6-7.1mg/m3.Further sintering processes implemented for these iron-based powder formed bodies and forms sintered body, and implementing finishing, machining and form sintered metal product as required.When needing to improve hot strength, fatigue strength, after sintering, also implement carburizing heat treatment, brightness heat treatment.But existing powdered metal parts, because in formula, the proportion of various raw material is different, be difficult to guarantee during mixing mix, cause the Density inhomogeneity of the green compact be pressed into, pass through heat treatment, the global density of the part of gained is uneven, causes every mechanical property bad.
Summary of the invention
The invention provides a kind of P/m Gear Wheel With Special Shape and preparation method thereof, by the technique of special pulp furnish and science, produce P/m Gear Wheel With Special Shape to have wearability good, intensity is high, hardness is high, machinability is good, corrosion-resistant, not easily occur fracture, the feature of long service life.
The technical solution used in the present invention is as follows:
A kind of P/m Gear Wheel With Special Shape, it is characterized in that, suppressed by the powder stock of following weight portion and form: iron powder 100, copper powder 1.8-2.0, molybdenum powder 0.5-0.8, vanadium powder 0.1-0.3, nickel powder 0.8-1.2, graphite powder 0.5-0.8, modification tree ash 0.1-0.3, rare earth ferrosilicon alloy 0.2-0.6, Cr powder 0.1-0.3, ethylene bis stearic acid amide 0.1-0.2, silica flour 0.1-0.3, yttrium powder 0.2-0.4, boron nitride 0.2-0.4, molybdenum sulfide 0.4-0.5, described rare earth ferrosilicon alloy the trade mark be FeSiRE23, granularity 5-20mm.
The preparation method of described P/m Gear Wheel With Special Shape, is characterized in that, comprises the following steps:
(1) first the base-material iron powder of 40-50% is loaded in high-speed mixer, add the silane resin acceptor kh-550 of base-material iron powder quality 0.3-0.6% wherein, high-speed stirred 5-6 minute, then by copper powder, molybdenum powder, vanadium powder, nickel powder, graphite powder, modification tree ash powder, Cr powder, ethylene bis stearic acid amide and remaining iron powder add wherein successively, mixed at high speed limit, limit is heated, when temperature is raised to 125-130 DEG C, all the other components in formula are all being added wherein, continue mixing 8-10 minute again, then it is allowed to cool, obtain the iron base powder mixture end of even density,
(2) iron base powder mixture end step (1) obtained loads in mould, makes shape at 550-580Mpa pressure;
(3) compressing green compact are placed in sintering furnace, in the protective atmosphere of hydrogen and nitrogen mixed gas, first it is 1000 ~ 1050 DEG C in temperature, sintering time is 10-20 minute, then 1150-1180 DEG C is increased the temperature to the speed of 10-20 DEG C/min, at this temperature, reburn knot 10-15 minute, and then room temperature is down in cooling;
(4) gear of heat treatment thermal sintering first carries out normalized treatment in normalizing furnace, is incubated 1-2 hours at 805 ~ 815 DEG C; Carry out Quenching Treatment again after taking-up, send in heat-treatment furnace and be heated to 650-700 DEG C DEG C, and be incubated 2-3 hour; Then, with quenching oil cooling, the gear after quenching is sent at being heated to 500-520 DEG C in tempering furnace and carry out high tempering process, insulation 1.5-2 hour, then carry out lonneal at 155 ~ 165 DEG C, insulation 2-3 hour;
(5) P/m Gear Wheel With Special Shape after carburizing lonneal, in carburizer, is heated to 875-925 DEG C in the carburizing medium of gaseous state, and isothermal holding 3-5 hour is cooled to 120 DEG C, during insulation 5-8, and then cool to room temperature;
(6) P/m Gear Wheel With Special Shape after steam treatment carburizing nitrogen is sent in steam oven, and carry out steam treatment, vapor (steam) temperature 600-700 DEG C, isothermal holding time 3-4 hour, is then incubated 2-3 hour, finally naturally cools to room temperature at 200-250 DEG C.
Described P/m Gear Wheel With Special Shape, is characterized in that, in described raw material, the particle diameter of various metal dust is within the scope of 200-400 order.
The preparation method of described P/m Gear Wheel With Special Shape, it is characterized in that, described modification tree ash powder is prepared from by the following method: tree ash is first used the salt acid soak 30-40 minute of 25%, then neutralize with alkali lye, use deionized water rinsing impurity elimination again, mix again and with a small amount of ethanol dissolved dilution NDZ-311 titanate coupling agent, the consumption of NDZ-311 titanate coupling agent is the 1-2% of tree ash weight, add in high speed mixer with Sprayable, discharging after stirring 15-20min, oven dry grinds to form 300-400 order powder, obtain modification tree ash powder.
Advantage of the present invention and beneficial effect:
1. P/m Gear Wheel With Special Shape of the present invention, carry out the mixing of employing substep, ensure that the even density of finished parts is consistent, improve the comprehensive mechanical performance of special shape gear, add man-hour, in the operation of mixed-powder material, first with coupling agent, part iron powder is soaked, and then alloyed powder and lubricant added in wetting iron powder in proportion mix, finally adding wherein through remaining iron powder, abundant mixing, the mixed-powder of gained is repressed, sintering, heat treatment, surface treatment, finally obtain final product, the powder metallurgy processing technology adopted, significantly reduce manufacturing cost, improve stock utilization and productivity ratio.
2. P/m Gear Wheel With Special Shape of the present invention, adds the metal dust of different proportion in composition of raw materials, makes the special shape gear prepared reach high strength, the performance of high rigidity and high abrasion; In formula, add appropriate kollag, add the self-lubricating property of product; With the addition of appropriate vanadium powder, modification tree ash powder, improve the intensity of product and anti-wear performance and self-lubricating property.
Detailed description of the invention
Below by embodiment, the present invention is described in further detail, but the present invention is not only confined to following examples.
Embodiment takes following raw materials (kg) iron powder 100, copper powder 1.9, molybdenum powder 0.6, vanadium powder 0.2, nickel powder 1.0, graphite powder 0.7, modification tree ash 0.2, rare earth ferrosilicon alloy 0.5, Cr powder 0.2, ethylene bis stearic acid amide 0.15, silica flour 0.2, yttrium powder 0.3, boron nitride 0.3, molybdenum sulfide 0.45, described rare earth ferrosilicon alloy the trade mark be FeSiRE23, granularity 5-20mm
Preparation method, comprises the following steps:
(1) first the base-material iron powder of 40-50% is loaded in high-speed mixer, add the silane resin acceptor kh-550 of base-material iron powder quality 0.3-0.6% wherein, high-speed stirred 5-6 minute, then by copper powder, molybdenum powder, vanadium powder, nickel powder, graphite powder, modification tree ash powder, Cr powder, ethylene bis stearic acid amide and remaining iron powder add wherein successively, mixed at high speed limit, limit is heated, when temperature is raised to 125-130 DEG C, all the other components in formula are all being added wherein, continue mixing 8-10 minute again, then it is allowed to cool, obtain the iron base powder mixture end of even density,
(2) iron base powder mixture end step (1) obtained loads in mould, makes shape at 550-580Mpa pressure;
(3) compressing green compact are placed in sintering furnace, in the protective atmosphere of hydrogen and nitrogen mixed gas, first it is 1000 ~ 1050 DEG C in temperature, sintering time is 10-20 minute, then increase the temperature to 1150-1180 DEG C with the speed of 5-8 DEG C/min, at this temperature, reburn knot 10-15 minute, then room temperature is down in cooling, is carrying out fine finishining;
(4) gear of heat treatment thermal sintering first carries out normalized treatment in normalizing furnace, is incubated 1-2 hours at 805 ~ 815 DEG C; Carry out Quenching Treatment again after taking-up, send in heat-treatment furnace and be heated to 650-700 DEG C DEG C, and be incubated 2-3 hour; Then, with quenching oil cooling, cooled gear is sent at being heated to 500-520 DEG C in tempering furnace and carry out high tempering process, insulation 1.5-2 hour, then carry out lonneal at 155 ~ 165 DEG C, insulation 2-3 hour;
(5) P/m Gear Wheel With Special Shape after carburizing lonneal, in carburizer, is heated to 875-925 DEG C in the carburizing medium of gaseous state, and isothermal holding 3-5 hour is cooled to 120 DEG C, during insulation 5-8, and then cool to room temperature;
(6) P/m Gear Wheel With Special Shape after steam treatment carburizing nitrogen nitrogen carries out steam treatment, vapor (steam) temperature 600-700 DEG C, processing time 3-4 hour, then at 200-250 DEG C, is incubated 2-3 hour, finally naturally cools to room temperature.
In raw material, the particle diameter of various metal dust is within the scope of 300-400 order.
Modification tree ash powder is prepared from by the following method: tree ash is first used the salt acid soak 30-40 minute of 25%, then neutralize with alkali lye, use deionized water rinsing impurity elimination again, mix again and with a small amount of ethanol dissolved dilution NDZ-311 titanate coupling agent, the consumption of NDZ-311 titanate coupling agent is the 1-2% of tree ash weight, adds in high speed mixer with Sprayable, discharging after stirring 15-20min, oven dry grinds to form 300-350 powder, obtains modification tree ash powder.
The Performance Detection of the powder metallurgical gear that the present embodiment obtains is as follows:
Tensile strength sigma b (MPa): 800
Yield strength σ s (MPa): 500
Percentage elongation δ 5 (%): 15.5
Contraction percentage of area ψ (%): 35.
Claims (1)
1. a P/m Gear Wheel With Special Shape, it is characterized in that, suppressed forming by the powder stock of following weight portion: iron powder 100, copper powder 1.8-2.0, molybdenum powder 0.5-0.8, vanadium powder 0.1-0.3, nickel powder 0.8-1.2, graphite powder 0.5-0.8, modification tree ash 0.1-0.3, rare earth ferrosilicon alloy 0.2-0.6, Cr powder 0.1-0.3, ethylene bis stearic acid amide 0.1-0.2, WS
20.1-0.3, yttrium powder 0.2-0.4, boron nitride 0.2-0.4, molybdenum sulfide 0.4-0.5, the trade mark of described rare earth ferrosilicon alloy is FeSiRE23, granularity 5-20mm;
The preparation method of described P/m Gear Wheel With Special Shape, comprises the following steps:
(1) first the base-material iron powder of 40-50% is loaded in high-speed mixer, add the silane resin acceptor kh-550 of base-material iron powder quality 0.3-0.6% wherein, high-speed stirred 5-6 minute, then by copper powder, molybdenum powder, vanadium powder, nickel powder, graphite powder, modification tree ash powder, Cr powder, ethylene bis stearic acid amide and remaining iron powder add wherein successively, mixed at high speed limit, limit is heated, when temperature is raised to 125-130 DEG C, again all the other components in formula are all added wherein, continue mixing 8-10 minute again, then it is allowed to cool, obtain the iron base powder mixture end of even density,
(2) iron base powder mixture end step (1) obtained loads in mould, makes shape at 550-580Mpa pressure; (3) compressing P/m Gear Wheel With Special Shape green compact are placed in sintering furnace, in the protective atmosphere of hydrogen and nitrogen mixed gas, first at 1000 ~ 1050 DEG C of temperature, sintering 10-20 minute, then 1150-1180 DEG C is increased the temperature to the speed of 10-20 DEG C/min, at this temperature, reburn knot 10-15 minute, and then room temperature is down in cooling;
(4) P/m Gear Wheel With Special Shape of heat treatment thermal sintering first carries out normalized treatment in normalizing furnace, is incubated 1-2 hours at 805 ~ 815 DEG C; Carry out Quenching Treatment again after taking-up, send in heat-treatment furnace and be heated to 650-700 DEG C, and be incubated 2-3 hour; Then, with quenching oil cooling, the P/m Gear Wheel With Special Shape after quenching is sent at being heated to 500-520 DEG C in tempering furnace and carry out high tempering process, insulation 1.5-2 hour, then carry out lonneal at 155 ~ 165 DEG C, insulation 2-3 hour;
(5) P/m Gear Wheel With Special Shape after carburizing lonneal, in carburizer, is heated to 875-925 DEG C in the carburizing medium of gaseous state, and isothermal holding 3-5 hour is cooled to 120 DEG C, during insulation 5-8, and then cool to room temperature;
(6) P/m Gear Wheel With Special Shape after steam treatment carburizing is sent in steam oven, and carry out steam treatment, vapor (steam) temperature 600-700 DEG C, isothermal holding time 3-4 hour, is then incubated 2-3 hour, finally naturally cools to room temperature at 200-250 DEG C;
In described powder stock, the particle diameter of various metal dust is within the scope of 200-400 order;
Described modification tree ash powder is prepared from by the following method: tree ash is first used the salt acid soak 30-40 minute of 25%, then neutralize with alkali lye, use deionized water rinsing impurity elimination again, mix again and with the NDZ-311 titanate coupling agent of a small amount of ethanol dissolved dilution, the consumption of NDZ-311 titanate coupling agent is the 1-2% of tree ash weight, adds in high speed mixer with Sprayable, discharging after stirring 15-20min, oven dry grinds to form 300-400 order powder, obtains modification tree ash powder.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201310107604.1A CN103223484B (en) | 2013-03-30 | 2013-03-30 | A kind of P/m Gear Wheel With Special Shape and preparation method thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201310107604.1A CN103223484B (en) | 2013-03-30 | 2013-03-30 | A kind of P/m Gear Wheel With Special Shape and preparation method thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
CN103223484A CN103223484A (en) | 2013-07-31 |
CN103223484B true CN103223484B (en) | 2015-11-25 |
Family
ID=48834256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201310107604.1A Active CN103223484B (en) | 2013-03-30 | 2013-03-30 | A kind of P/m Gear Wheel With Special Shape and preparation method thereof |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN103223484B (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103600074B (en) * | 2013-10-10 | 2016-05-04 | 铜陵新创流体科技有限公司 | A kind of powder metallurgy antifriction alloy and preparation method thereof |
CN103600081B (en) * | 2013-10-10 | 2016-05-04 | 铜陵新创流体科技有限公司 | A kind of powder-metallurgy refrigeration compressor valve sheet and preparation method thereof |
CN103600073B (en) * | 2013-10-10 | 2016-05-04 | 铜陵新创流体科技有限公司 | A kind of powder metallurgy chain wheel and preparation method thereof |
CN103600076B (en) * | 2013-10-10 | 2016-05-04 | 铜陵新创流体科技有限公司 | A kind of powder metallurgy automobile power steering pump stator and preparation method thereof |
CN103572162A (en) * | 2013-10-10 | 2014-02-12 | 铜陵国方水暖科技有限责任公司 | Powder-metallurgy slippage pump rotor and preparation method thereof |
CN103537663A (en) * | 2013-10-11 | 2014-01-29 | 芜湖市鸿坤汽车零部件有限公司 | Powder metallurgy gear disk and manufacturing method thereof |
CN103537676A (en) * | 2013-10-11 | 2014-01-29 | 芜湖市鸿坤汽车零部件有限公司 | Powder metallurgy transmission gear and manufacturing method thereof |
CN103600065B (en) * | 2013-10-14 | 2016-04-13 | 富莱茵汽车部件有限公司 | A kind of powder metallurgical gear and preparation method thereof |
CN104550914A (en) * | 2014-12-25 | 2015-04-29 | 铜陵市经纬流体科技有限公司 | Iron-based self-lubrication powder metallurgy material for valve and preparation method of material |
CN105443721B (en) * | 2015-12-18 | 2020-03-31 | 漳州优普激光科技有限公司 | Laser cutting machine gear and preparation method thereof |
CN106001548A (en) * | 2016-07-27 | 2016-10-12 | 黄宇 | Powder metallurgical gear |
CN106041095A (en) * | 2016-07-27 | 2016-10-26 | 黄宇 | Novel powder metallurgical gear |
CN108607997A (en) * | 2018-05-14 | 2018-10-02 | 洪新阳 | A kind of processing technology of gear |
CN111842876A (en) * | 2020-07-28 | 2020-10-30 | 青志(无锡)粉末铸锻有限公司 | Production process of powder metallurgy gear |
CN116555674B (en) * | 2023-05-22 | 2024-03-15 | 宁波市鄞州宁东齿轮有限公司 | Corrosion-resistant gear and preparation method thereof |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102179519A (en) * | 2011-03-09 | 2011-09-14 | 宁波甬台粉末冶金有限公司 | Powder metallurgy transmission gear and manufacturing method thereof |
CN102982946A (en) * | 2012-11-23 | 2013-03-20 | 天长市昭田磁电科技有限公司 | La2O3-containing ferromagnetic core manufacturing method |
CN102990065A (en) * | 2012-11-25 | 2013-03-27 | 安徽普源分离机械制造有限公司 | Powder metallurgy manufacturing method for valve flap of check valve |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06330214A (en) * | 1993-05-21 | 1994-11-29 | Sumitomo Electric Ind Ltd | Aluminum power alloy having high hardness and wear resistnce and its production |
-
2013
- 2013-03-30 CN CN201310107604.1A patent/CN103223484B/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102179519A (en) * | 2011-03-09 | 2011-09-14 | 宁波甬台粉末冶金有限公司 | Powder metallurgy transmission gear and manufacturing method thereof |
CN102982946A (en) * | 2012-11-23 | 2013-03-20 | 天长市昭田磁电科技有限公司 | La2O3-containing ferromagnetic core manufacturing method |
CN102990065A (en) * | 2012-11-25 | 2013-03-27 | 安徽普源分离机械制造有限公司 | Powder metallurgy manufacturing method for valve flap of check valve |
Also Published As
Publication number | Publication date |
---|---|
CN103223484A (en) | 2013-07-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN103223484B (en) | A kind of P/m Gear Wheel With Special Shape and preparation method thereof | |
CN103231050B (en) | A kind of Powder metallurgy horizontal gear and preparation method thereof | |
CN103231060B (en) | A kind of powder metallurgical helical gear and preparation method thereof | |
CN103231052B (en) | A kind of powder metallurgy central gear and preparation method thereof | |
CN103223486A (en) | Powder metallurgy duplicate gear and preparation method thereof | |
CN103231062B (en) | Powder metallurgy planetary gear and preparation method thereof | |
CN103231061B (en) | Powder metallurgy synchronous wheel and preparation method thereof | |
CN103233166B (en) | A kind of powder metallurgy toothed segment and preparation method thereof | |
CN103223485B (en) | A kind of powder metallurgy bevel gear and preparation method thereof | |
CN103231051B (en) | A kind of powder metallurgy bevel gear and preparation method thereof | |
CN103071800A (en) | Iron-based oil-containing bearing and manufacturing method thereof | |
CN101905411B (en) | Method for manufacturing coupler for distributor of automobile engine | |
CN102990065B (en) | The flap powder metallurgy manufacture method of check-valves | |
CN102049523B (en) | Free-cutting water-atomized steel powder and preparation method thereof | |
CN103223489A (en) | Method for manufacturing eccentric wheel through powder metallurgy | |
CN102560249A (en) | Formula and process for powder metallurgy | |
CN103223487A (en) | Method for manufacturing automobile connecting rod through powder metallurgy | |
CN102773482B (en) | Method for manufacturing butterfly valve rod by powder metallurgy | |
CN103252492B (en) | Preparation method for powder metallurgy for automotive brake valve block | |
CN103223490A (en) | Method for manufacturing motorcycle crank shaft through powder metallurgy | |
KR101345982B1 (en) | Method of producing machine parts from blanks obtained by sintering metal powders | |
CN102672180A (en) | Powdery metallurgical finished product process | |
CN103551578A (en) | Power metallurgy iron-based engine valve seat and production method thereof | |
CN103938017A (en) | Copper-based powder metallurgy tool steel and manufacturing method thereof | |
CN102773487A (en) | Powder metallurgy preparation method of check valve clack |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CP03 | Change of name, title or address |
Address after: The new town 241000 Anhui city of Wuhu province Fanchang County of Curry Village Patentee after: Anhui Hengjun Powder Metallurgy Technology Co., Ltd. Address before: The new town 241202 Anhui city of Wuhu province Fanchang County of Curry Village Patentee before: Anhui Hengyu Powder Metallurgy Co., Ltd. |
|
CP03 | Change of name, title or address |