CN105673806A - High-density and high-strength planet gear - Google Patents

High-density and high-strength planet gear Download PDF

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Publication number
CN105673806A
CN105673806A CN201610141122.1A CN201610141122A CN105673806A CN 105673806 A CN105673806 A CN 105673806A CN 201610141122 A CN201610141122 A CN 201610141122A CN 105673806 A CN105673806 A CN 105673806A
Authority
CN
China
Prior art keywords
density
strength
planetary
planet gear
planetary gear
Prior art date
Application number
CN201610141122.1A
Other languages
Chinese (zh)
Inventor
黄亮
徐同
官劲松
邓恩龙
马华荣
Original Assignee
扬州保来得科技实业有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 扬州保来得科技实业有限公司 filed Critical 扬州保来得科技实业有限公司
Priority to CN201610141122.1A priority Critical patent/CN105673806A/en
Publication of CN105673806A publication Critical patent/CN105673806A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
    • B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10Sintering only
    • B22F3/1003Use of special medium during sintering, e.g. sintering aid
    • B22F3/1007Atmosphere
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
    • B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12Both compacting and sintering
    • B22F3/14Both compacting and sintering simultaneously
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
    • B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24After-treatment of workpieces or articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
    • B22F5/00Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/08Manufacture 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
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/08Ferrous alloys, e.g. steel alloys containing nickel
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/12Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/16Ferrous alloys, e.g. steel alloys containing copper
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H55/00Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02Toothed members; Worms
    • F16H55/06Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
    • B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24After-treatment of workpieces or articles
    • B22F2003/248Thermal after-treatment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
    • B22F2998/00Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10Processes characterised by the sequence of their steps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H55/00Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02Toothed members; Worms
    • F16H55/06Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties
    • F16H2055/065Moulded gears, e.g. inserts therefor

Abstract

The invention discloses a high-density and high-strength planet gear. Powder metallurgy consists of 0.4-0.7% of C, 1.3-1.7% of Cu, 3.6-4.4% of Ni, 0.4-0.6% of Mo and the balance of Fe. The high-density and high-strength planet gear can effectively solve the problem of low strength, finally improves the product strength through improvement of product density and high-temperature sintering, can replace one part of steel gears, effectively saves raw materials, and largely reduces the production cost. The product has a hardness of HRC35 MIN, a strength of 1200 Kgf MIN and a density of above 7.45 g/cm3, and is excellent in practicability.

Description

A kind of high-density high-strength planetary gear
Technical field
The present invention relates to powder metallurgical technology, be specifically related to a kind of high-density high-strength planetary gear.
Background technology
In existing electric tool, the powder metallurgy planetary gear of gear-box, product density is typically small, at 7.3g/cm3Hereinafter, intensity is weak, it is easy to damage, it is impossible to substitutes steel part gear and uses, it is clear that can not fully meet user demand.
Summary of the invention
Goal of the invention: for the deficiencies in the prior art, it is an object of the invention to provide a kind of high-density high-strength planetary gear, has high density, high intensity feature, meet the user demand at electric tool middle gear case.
Technical scheme: in order to realize foregoing invention purpose, the scheme that the present invention adopts is:
A kind of high-density high-strength planetary gear, described planetary powder metallurgy consists of: C0.4% ~ 0.7%, Cu1.3% ~ 1.7%, Ni3.6% ~ 4.4%, Mo0.4% ~ 0.6%, Fe surplus.
Described planetary density is at 7.45g/cm3Above.
The planetary preparation method of described high-density high-strength, comprises the following steps:
1) drawing materials and shape in a mold, shape board 60T, middle mould heats 70 DEG C;
2) once sintered 890 DEG C of continuous sintering furnace, 110mm/min, atmosphere AX; High temperature sintering furnace double sintering 1250 DEG C, 10min/ boat, atmosphere RX;
3) Carburization Treatment in carburizer, 850 DEG C of carburizing 2h, 180 DEG C of tempering 1h;
4) oil immersion in vacuum oil dipping machine;
5) QC inspection;
6) shipment.
Beneficial effect: compared with prior art, the high-density high-strength planetary gear of the present invention, can effectively solve the problem that intensity is low, by improving the density of product, high temperature sintering, finally improve product strength, can Substitute For Partial steel part gear, effectively save raw material, cost of manufacture is greatly reduced. Product hardness: HRC35MIN, intensity: 1200KgfMIN, density 7.45g/cm3Above, there is good practicality.
Accompanying drawing explanation
Fig. 1 is the planetary structural representation of high-density high-strength.
Detailed description of the invention
Below in conjunction with concrete accompanying drawing, the present invention will be further described.
As it is shown in figure 1, high-density high-strength planetary gear, powder metallurgy consists of: C0.4% ~ 0.7%, Cu1.3% ~ 1.7%, Ni3.6% ~ 4.4%, Mo0.4% ~ 0.6%, Fe surplus.
The planetary preparation method of this high-density high-strength, comprises the following steps:
1) drawing materials and shape in a mold, shape board 60T, middle mould heats 70 DEG C;
2) once sintered 890 DEG C of continuous sintering furnace, 110mm/min, atmosphere AX; High temperature sintering furnace double sintering 1250 DEG C, 10min/ boat, atmosphere RX;
3) Carburization Treatment in carburizer, 850 DEG C of carburizing 2h, 180 DEG C of tempering 1h;
4) oil immersion in vacuum oil dipping machine;
5) QC inspection;
6) shipment.
The high-density high-strength planetary gear of preparation is carried out performance detection, and concrete outcome parameter is as follows:
Density is at 7.45g/cm3Above, hardness: HRC35MIN, intensity: 1200KgfMIN, precision: 5 grades (JISB1702-1976).
Typical product component and performance are as shown in the table:
This product efficiently solves the problem that intensity is low, by improving the density of product, high temperature sintering, finally improves product strength, it is possible to Substitute For Partial steel part gear, effectively save raw material, cost of manufacture is greatly reduced.

Claims (3)

1. a high-density high-strength planetary gear, it is characterised in that: described planetary powder metallurgy consists of: C0.4% ~ 0.7%, Cu1.3% ~ 1.7%, Ni3.6% ~ 4.4%, Mo0.4% ~ 0.6%, Fe surplus.
2. the high-density high-strength planetary gear described in claim 1, it is characterised in that described planetary density is at 7.45g/cm3Above.
3. the planetary preparation method of high-density high-strength described in claim 1, it is characterised in that comprise the following steps:
1) drawing materials and shape in a mold, shape board 60T, middle mould heats 70 DEG C;
2) once sintered 890 DEG C of continuous sintering furnace, 110mm/min, atmosphere AX; High temperature sintering furnace double sintering 1250 DEG C, 10min/ boat, atmosphere RX;
3) Carburization Treatment in carburizer, 850 DEG C of carburizing 2h, 180 DEG C of tempering 1h;
4) oil immersion in vacuum oil dipping machine;
5) QC inspection;
6) shipment.
CN201610141122.1A 2016-03-14 2016-03-14 High-density and high-strength planet gear CN105673806A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610141122.1A CN105673806A (en) 2016-03-14 2016-03-14 High-density and high-strength planet gear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610141122.1A CN105673806A (en) 2016-03-14 2016-03-14 High-density and high-strength planet gear

Publications (1)

Publication Number Publication Date
CN105673806A true CN105673806A (en) 2016-06-15

Family

ID=56308254

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610141122.1A CN105673806A (en) 2016-03-14 2016-03-14 High-density and high-strength planet gear

Country Status (1)

Country Link
CN (1) CN105673806A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007315537A (en) * 2006-05-26 2007-12-06 Hitachi Powdered Metals Co Ltd Bearing compound gear
CN101417337A (en) * 2007-10-23 2009-04-29 比亚迪股份有限公司 Method for manufacturing bevel gear
CN102672183A (en) * 2012-05-11 2012-09-19 马鞍山市华东粉末冶金厂 Method for producing bevel gear with ratchet on end face through powder metallurgy warm forming
CN103691958A (en) * 2013-12-06 2014-04-02 无锡市德力流体科技有限公司 Powdered metallurgical gear processing technology
CN104070160A (en) * 2014-06-30 2014-10-01 张家港振江粉末冶金制品有限公司 Powder metallurgy duplicate gear and preparation method for same
CN105014077A (en) * 2014-04-17 2015-11-04 东睦新材料集团股份有限公司 Preparation method of powder metallurgical gear and chain wheel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007315537A (en) * 2006-05-26 2007-12-06 Hitachi Powdered Metals Co Ltd Bearing compound gear
CN101417337A (en) * 2007-10-23 2009-04-29 比亚迪股份有限公司 Method for manufacturing bevel gear
CN102672183A (en) * 2012-05-11 2012-09-19 马鞍山市华东粉末冶金厂 Method for producing bevel gear with ratchet on end face through powder metallurgy warm forming
CN103691958A (en) * 2013-12-06 2014-04-02 无锡市德力流体科技有限公司 Powdered metallurgical gear processing technology
CN105014077A (en) * 2014-04-17 2015-11-04 东睦新材料集团股份有限公司 Preparation method of powder metallurgical gear and chain wheel
CN104070160A (en) * 2014-06-30 2014-10-01 张家港振江粉末冶金制品有限公司 Powder metallurgy duplicate gear and preparation method for same

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Application publication date: 20160615