CN110421176A - A kind of high density gear preparation method - Google Patents
A kind of high density gear preparation method Download PDFInfo
- Publication number
- CN110421176A CN110421176A CN201910815776.1A CN201910815776A CN110421176A CN 110421176 A CN110421176 A CN 110421176A CN 201910815776 A CN201910815776 A CN 201910815776A CN 110421176 A CN110421176 A CN 110421176A
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- Prior art keywords
- raw material
- gear
- high density
- less
- base
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Classifications
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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
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
-
- 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
- B22F3/02—Compacting only
-
- 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
- B22F3/10—Sintering only
- B22F3/1017—Multiple heating or additional steps
-
- 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
-
- 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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- 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
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
-
- 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
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
Abstract
The present invention relates to a kind of high density gear preparation methods, include the following steps: content counting by mass percentage, with 1.45-1.55% copper powder, 1.80-2.10% nickel powder and 0.55-0.65 carbon dust, remaining iron powder is raw material, raw material are stirred by batch mixer, obtain mixture；Lubricant is added in the mixture, and carries out high-speed stirred, the speed of stirring is 650-850r/Min, and the duration of stirring is no less than 0.5H, the raw material stirred evenly；Raw material is sent into the press mold of moulding press, obtains just base；First base is sequentially placed into preheating furnace and sintering furnace and is sintered, protective gas has been filled in preheating furnace and sintering furnace, the temperature of preheating furnace is 950 ± 20 DEG C; soaking time is no less than 0.5H; the temperature of sintering furnace is 1100-1150 DEG C, and soaking time 0.8-1.5H obtains gear；Density and hardness test is carried out to gear, density is not less than 7.35g/cm3, the HRB value of hardness is not less than 80.The raw material of configuration is pressed into just base by the present invention, is sintered in preheating furnace and sintering furnace to first base, so that just base metallizes to obtain highdensity gear.
Description
Technical field
The present invention relates to the technical fields of gear, more particularly, to a kind of high density gear preparation method.
Background technique
Gear be can intermeshing machine components with teeth, meanwhile, gear is also common driving member；Since gear is used
In conducting power, therefore, the intensity of gear is stronger, can more be competent at the important task of conducting power；Usually, the density of gear is got over
Height, intensity are stronger.
Currently, highdensity gear is usually prepared under hot pressing environment, i.e., it is sintered while suppressing using equipment, thus
Prepare high density gear.But the equipment for manufacturing high temperature and high pressure environment is expensive, is unfavorable for buying；System is sintered while suppressing
Standby gear, power consumption is big, and increase prepares the cost of gear, weakens the market competitiveness of gear；It is prepared using hot-pressing sintering technique
Gear the problem of there is Density inhomogeneities, increase the quantity of gear waste product, to increase the pressure of enterprise.
Summary of the invention
The object of the present invention is to provide a kind of high density gear preparation method, the equipment that it solves preparation high density gear
The problem of expensive, preparation high density gear power consumption is big and uncontrollable gear quantity scrapped, reduces production high density gear
Cost is conducive to the competitiveness for improving gear.
Foregoing invention purpose of the invention has the technical scheme that
A kind of high density gear preparation method, includes the following steps:
Step 1: content counts by mass percentage, with 1.45-1.55% copper powder, 1.80-2.10% nickel powder and 0.55-0.65 carbon
Powder, remaining iron powder are raw material, are stirred by batch mixer to raw material, obtain mixture；
Step 2: lubricant being added in the mixture, and carries out high-speed stirred, and the speed of stirring is 650-850r/Min, stirring
Duration be no less than 0.5H, the raw material stirred evenly；
Step 3: raw material being sent into the press mold of moulding press, obtains just base；
Step 4: first base being sequentially placed into preheating furnace and sintering furnace and is sintered, and protection gas has been filled in preheating furnace and sintering furnace
Body, the temperature of preheating furnace are 950 ± 20 DEG C, and soaking time is no less than 0.5H, and the temperature of sintering furnace is 1100-1150 DEG C, heat preservation
Time 0.8-1.5H, obtains gear；
Step 5: density and hardness test is carried out to gear, density is not less than 7.35g/cm3, the HRB value of hardness is not less than
80。
The present invention is further arranged to: content counts by mass percentage, in the step 2 raw material include 1.50% bronze medal,
2.00% nickel, 0.60% carbon and 0.60 lubricant, remaining is iron.
The present invention is further arranged to: the lubricant is specially cured base lubricating agent.
The present invention is further arranged to: the pressure of the press mold compacting of the step 3 is not less than 5T/cm2。
The present invention is further arranged to: the protective gas is the mixed gas of hydrogen and nitrogen.
The present invention is further arranged to: the atomicity ratio of the hydrogen and nitrogen is 1:3.
The present invention is further arranged to: the temperature of sintering furnace is 1120 DEG C in the step 4.
In conclusion advantageous effects of the invention are as follows:
The raw material of configuration is pressed into just base by the present invention, is sintered in preheating furnace and sintering furnace to first base, so that just base metallizes
To highdensity gear；Compared with prior art, equipment valuableness, the preparation high density gear consumption of preparation high density gear are solved
Electricity reduces the cost of production high density gear greatly and the problem of uncontrollable gear quantity scrapped, is conducive to improve gear
Competitiveness.
Specific embodiment
Purposes, technical schemes and advantages in order to better illustrate the present invention, below in conjunction with specific embodiment to this hair
It is bright to be described further.
Embodiment 1
The configuration of raw material: installation quality percentage counts, with 1.45% copper powder, 1.80% nickel powder and 0.56% carbon dust, remaining
It is iron powder as raw material, puts raw materials into batch mixer, batch mixer is stirred mixing to raw material, obtains mixture；In
Cured base lubricating agent is added in mixture, cured base lubricating agent is produced by Guangzhou Qing Fanxiang material Science and Technology Ltd., main ingredient
For ethylene bis stearamide, the double palmitamides of ethylene and fatty acid, mixture and cured base lubricating agent are continued to stir, stirring
Speed is 650-850r/Min, and the time of stirring is 0.5H, so that cured base lubricating agent, copper powder, nickel powder, carbon dust and iron powder uniformly mix
It closes, obtains raw material, it is spare.It is counted according to mass percent, the content of cured base lubricating agent is 0.58%.
Compression moulding: raw material being sent into the press mold of moulding press, and the pressing pressure of press mold is 5T/cm2, obtain just base；
Sintering metal: first base is put into preheating furnace, and protective gas has been filled in preheating furnace, and protective gas includes hydrogen and nitrogen
The atomicity ratio of gas, hydrogen and nitrogen is 1:3, and hydrogen and nitrogen mix in preheating furnace, to form protective atmosphere；Protection
Atmosphere limits just base and oxidation reaction occurs in preheating furnace.The soaking time of preheating furnace is 0.5H, protection temperature control for 950 ±
20 DEG C, it is generally the case that heat preservation is 950 DEG C, so that just the cured base lubricating agent in base decomposes volatilization.First base after preheating is put into
It is sintered in sintering furnace, the protective atmosphere in sintering furnace is identical as the protective atmosphere of preheating furnace.The soaking time of sintering furnace is in 0.8-
Between 1.5H, it is generally the case that soaking time 1H；Sintering furnace temperature control between 1100-1150 DEG C, usual situation
Under, the temperature of sintering furnace is 1120 DEG C.First base sintering metal in sintering furnace, obtains gear, cools down, and gear is removed and is sintered
Furnace, so that gear continues to cool down in a natural environment.Density Detection is carried out to gear, density is not less than 7.35g/cm3, to gear
Hardness determination is carried out, the HRB value of hardness is not less than 80.
Embodiment 2
Embodiment 2 difference from example 1 is that:
The configuration of raw material: installation quality percentage counts, with 1.50% copper powder, 1.90% nickel powder and 0.60% carbon dust, remaining
It is iron powder as raw material, puts raw materials into batch mixer, batch mixer is stirred mixing to raw material, obtains mixture；In
Cured base lubricating agent is added in mixture, cured base lubricating agent is produced by Guangzhou Qing Fanxiang material Science and Technology Ltd., main ingredient
For ethylene bis stearamide, the double palmitamides of ethylene and fatty acid, mixture and cured base lubricating agent are continued to stir, stirring
Speed is 650-850r/Min, and the time of stirring is 0.5H, so that cured base lubricating agent, copper powder, nickel powder, carbon dust and iron powder uniformly mix
It closes, obtains raw material, it is spare.It is counted according to mass percent, the content of cured base lubricating agent is 0.60%.
Embodiment 3:
Embodiment 3 difference from example 1 is that:
The configuration of raw material: installation quality percentage counts, with 1.54% copper powder, 2.00% nickel powder and 0.62% carbon dust, remaining
It is iron powder as raw material, puts raw materials into batch mixer, batch mixer is stirred mixing to raw material, obtains mixture；In
Cured base lubricating agent is added in mixture, cured base lubricating agent is produced by Guangzhou Qing Fanxiang material Science and Technology Ltd., main ingredient
For ethylene bis stearamide, the double palmitamides of ethylene and fatty acid, mixture and cured base lubricating agent are continued to stir, stirring
Speed is 650-850r/Min, and the time of stirring is 0.5H, so that cured base lubricating agent, copper powder, nickel powder, carbon dust and iron powder uniformly mix
It closes, obtains raw material, it is spare.It is counted according to mass percent, the content of cured base lubricating agent is 0.63%.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this
Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it
It is interior.
Claims (7)
1. a kind of high density gear preparation method, characterized by the following steps:
Step 1: content counts by mass percentage, with 1.45-1.55% copper powder, 1.80-2.10% nickel powder and 0.55-0.65 carbon
Powder, remaining iron powder are raw material, are stirred by batch mixer to raw material, obtain mixture；
Step 2: lubricant being added in the mixture, and carries out high-speed stirred, and the speed of stirring is 650-850r/Min, stirring
Duration be no less than 0.5H, the raw material stirred evenly；
Step 3: raw material being sent into the press mold of moulding press, obtains just base；
Step 4: first base being sequentially placed into preheating furnace and sintering furnace and is sintered, and protection gas has been filled in preheating furnace and sintering furnace
Body, the temperature of preheating furnace are 950 ± 20 DEG C, and soaking time is no less than 0.5H, and the temperature of sintering furnace is 1100-1150 DEG C, heat preservation
Time 0.8-1.5H, obtains gear；
Step 5: density and hardness test is carried out to gear, density is not less than 7.35g/cm3, the HRB value of hardness is not less than 80.
2. a kind of high density gear preparation method according to claim 1, it is characterised in that: content meter by mass percentage
It counts, raw material includes 1.50% bronze medal, 2.00% nickel, 0.60% carbon and 0.60 lubricant in the step 2, remaining is iron.
3. a kind of high density gear preparation method according to claim 2, it is characterised in that: the lubricant is specially cured
Base lubricating agent.
4. a kind of high density gear preparation method according to claim 1, it is characterised in that: the press mold pressure of the step 3
The pressure of system is not less than 5T/cm2.
5. a kind of high density gear preparation method according to claim 1, it is characterised in that: the protective gas is hydrogen
With the mixed gas of nitrogen.
6. a kind of high density gear preparation method according to claim 5, it is characterised in that: the original of the hydrogen and nitrogen
Subnumber ratio is 1:3.
7. a kind of high density gear preparation method according to claim 1, it is characterised in that: sintering furnace in the step 4
Temperature be 1120 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910815776.1A CN110421176A (en) | 2019-08-30 | 2019-08-30 | A kind of high density gear preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910815776.1A CN110421176A (en) | 2019-08-30 | 2019-08-30 | A kind of high density gear preparation method |
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| Publication Number | Publication Date |
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| CN110421176A true CN110421176A (en) | 2019-11-08 |
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ID=68416813
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910815776.1A Pending CN110421176A (en) | 2019-08-30 | 2019-08-30 | A kind of high density gear preparation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114472891A (en) * | 2022-01-10 | 2022-05-13 | 江苏精研科技股份有限公司 | High-precision and high-efficiency forming method for small-modulus gear |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1393303A (en) * | 2001-06-29 | 2003-01-29 | 宣碧华 | Method for manufacturing chain |
| CN1706576A (en) * | 2004-06-07 | 2005-12-14 | 扬州意得机械有限公司 | Manufacture of high-density helical gear |
| CN101214550A (en) * | 2008-01-04 | 2008-07-09 | 陆海雷 | Method for manufacturing small spiral bevel gear |
| CN103231050A (en) * | 2013-03-30 | 2013-08-07 | 安徽省恒宇粉末冶金有限公司 | Powder metallurgy horizontal gear and preparation method thereof |
| KR101522513B1 (en) * | 2015-03-19 | 2015-05-26 | 윤석삼 | Method for manufacuring a helical gear using powder metallugy |
| CN107979195A (en) * | 2017-12-29 | 2018-05-01 | 扬州意得机械有限公司 | A kind of industry washer stator and its processing method |
-
2019
- 2019-08-30 CN CN201910815776.1A patent/CN110421176A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1393303A (en) * | 2001-06-29 | 2003-01-29 | 宣碧华 | Method for manufacturing chain |
| CN1706576A (en) * | 2004-06-07 | 2005-12-14 | 扬州意得机械有限公司 | Manufacture of high-density helical gear |
| CN101214550A (en) * | 2008-01-04 | 2008-07-09 | 陆海雷 | Method for manufacturing small spiral bevel gear |
| CN103231050A (en) * | 2013-03-30 | 2013-08-07 | 安徽省恒宇粉末冶金有限公司 | Powder metallurgy horizontal gear and preparation method thereof |
| KR101522513B1 (en) * | 2015-03-19 | 2015-05-26 | 윤석삼 | Method for manufacuring a helical gear using powder metallugy |
| CN107979195A (en) * | 2017-12-29 | 2018-05-01 | 扬州意得机械有限公司 | A kind of industry washer stator and its processing method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114472891A (en) * | 2022-01-10 | 2022-05-13 | 江苏精研科技股份有限公司 | High-precision and high-efficiency forming method for small-modulus gear |
| CN114472891B (en) * | 2022-01-10 | 2023-11-24 | 江苏精研科技股份有限公司 | Efficient forming method for high-precision small-modulus gear |
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Application publication date: 20191108 |
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