CN109604610A - A kind of moulding process of fine module gear reduced iron powder - Google Patents
A kind of moulding process of fine module gear reduced iron powder Download PDFInfo
- Publication number
- CN109604610A CN109604610A CN201811386132.7A CN201811386132A CN109604610A CN 109604610 A CN109604610 A CN 109604610A CN 201811386132 A CN201811386132 A CN 201811386132A CN 109604610 A CN109604610 A CN 109604610A
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- CN
- China
- Prior art keywords
- iron powder
- screening
- reduced iron
- module gear
- fine module
- 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
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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
- 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
- B22F3/12—Both compacting and sintering
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
- Gears, Cams (AREA)
Abstract
A kind of moulding process of fine module gear reduced iron powder, it is related to gear forming technology field.It is comprised the following steps: being carried out screening process to reduced iron powder, atomized iron powder respectively using screening machine, is obtained the atomized iron powder that screening mesh number is the reduced iron powder of 240-325 mesh, 270-400 mesh；Reduced iron powder after screening is mixed with the atomized iron powder after screening, mixture is sufficiently stirred using blender, obtains iron mixture after evenly mixing.After by adopting the above technical scheme, the invention has the following beneficial effects: simple process, use value is high, and cost of material is cheap, cost of material can be reduced, fine module gear function admirable after molding, intensity and sintering strength significantly improve, avoid as density it is inadequate caused by damage collapse it is scarce, reduce product cost, the comprehensive performance and cost performance for improving product, can satisfy client to the performance requirement of product, superior performance generalization is strong in colleague field.
Description
Technical field
The present invention relates to gear forming technology fields, and in particular to a kind of molding of fine module gear reduced iron powder
Technique.
Background technique
Gear refers to the mechanical organ for having gear continuously to engage passing movement and power on wheel rim.
Entire gear industry realizes 946.35 hundred million yuan of total industrial output value within 2010, and the gear whole industry market demand is more than 1400
Hundred million yuan, world rankings second.From the various aspects such as scale and sales volume because usually, gear industry already becomes Chinese mechanical general
" leading " the grade industry in components basic part field.
With the continuous aggravation that gear industry competes, M&A integration and capital operation are increased between large gear enterprise,
Domestic outstanding Gear Production enterprise more and more payes attention to the research to industry market, especially needs to Business Development Environment and client
Ask the further investigation of Long-term change trend.Just because of this, the outstanding gear brand in large quantities of country emerges rapidly, is increasingly becoming gear
Outstanding figure in industry！
China in industrialization, the marketization and period for accelerating development of urbanization, be also at consumption expand and structure updating when
Phase, equipment manufacture will welcome rare opportunity to develop, provide great market space for the development of gear.
Fine module gear moulding process often complex process currently on the market, use value is not high, and cost of material is expensive, no
Cost of material can be reduced, fine module gear performance after molding is more weak, and intensity and sintering strength are without significantly improving, Wu Fada
Requirement to client to product, it is weak to lack generalization for performance in colleague field.
Summary of the invention
In view of the defects and deficiencies of the prior art, the present invention intends to provide a kind of fine module gear reduced iron powders
Moulding process, simple process, use value is high, and cost of material is cheap, can reduce cost of material, fine module gear after molding
Function admirable, intensity and sintering strength significantly improve, avoid as density it is inadequate caused by damage collapse it is scarce, reduce product cost,
The comprehensive performance and cost performance for improving product, can satisfy client to the performance requirement of product, the superior performance in colleague field
Generalization is strong.
To achieve the above object, the present invention is that it is comprised the following steps using following technical scheme:
Step 1: carrying out screening process to reduced iron powder, atomized iron powder respectively using screening machine, obtaining screening mesh number is 240-
The atomized iron powder of the reduced iron powders of 325 mesh, 270-400 mesh；
Step 2: the reduced iron powder after screening is mixed with the atomized iron powder after screening, mixture is filled using blender
Divide stirring, obtains iron mixture after evenly mixing；
Step 3: iron mixture is put into compression moulding in fine module gear molding machine, fine module gear blank is obtained；
High temperature sintering is carried out Step 4: fine module gear blank is placed in meshbeltfurnace, obtains fine module gear.
The particle shape of reduced iron powder is diamond shape in the step 1, and the particle shape of atomized iron powder is spherical.
The screening mesh number of reduced iron powder is 300 mesh in the step 1, and the screening mesh number of atomized iron powder is 300 mesh.
The mixed proportion of reduced iron powder after sieving in the step 2 and the atomized iron powder after screening is 3:7,4:6,5:5
One of.
Iron mixture is detected in the step 2, tests and analyzes apparent density, the flowing of different mixing proportion
Property, compressibility.
The density of compression moulding is 6.8 in the step 3。
The pressure of compression moulding is 6 in the step 3。
The working principle of the invention: screening process is carried out to reduced iron powder, atomized iron powder respectively using screening machine, is sieved
Subhead number is the atomized iron powder of the reduced iron powder of 240-325 mesh, 270-400 mesh；By after screening reduced iron powder and screening after
Atomized iron powder mixing, is sufficiently stirred mixture using blender, obtains iron mixture after evenly mixing；Iron powder is mixed
It closes object and is put into compression moulding in fine module gear molding machine, obtain fine module gear blank；Fine module gear blank is placed on
High temperature sintering is carried out in meshbeltfurnace, obtains fine module gear.
After adopting the above technical scheme, use value is high, and cost of material is cheap the invention has the following beneficial effects: simple process,
Cost of material can be reduced, fine module gear function admirable after molding, intensity and sintering strength are significantly improved, avoided due to density
Damaging caused by not enough, it is scarce to collapse, and reduces product cost, improves the comprehensive performance and cost performance of product, can satisfy client to product
Performance requirement, superior performance generalization is strong in colleague field.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is schematic process flow diagram of the invention.
Specific embodiment
Referring to shown in Fig. 1, present embodiment the technical solution adopted is that: it is comprised the following steps:
Step 1: carrying out screening process to reduced iron powder, atomized iron powder respectively using screening machine, obtaining screening mesh number is 240-
The atomized iron powder of the reduced iron powders of 325 mesh, 270-400 mesh；
Step 2: the reduced iron powder after screening is mixed with the atomized iron powder after screening, mixture is filled using blender
Divide stirring, obtains iron mixture after evenly mixing；
Step 3: iron mixture is put into compression moulding in fine module gear molding machine, fine module gear blank is obtained；
High temperature sintering is carried out Step 4: fine module gear blank is placed in meshbeltfurnace, obtains fine module gear.
The particle shape of reduced iron powder is diamond shape in the step 1, and the particle shape of atomized iron powder is spherical.Reduced iron
The particle shape of powder is diamond shape, makes fine module gear blank underlying strength high, and the particle shape of atomized iron powder is spherical and can be with
Improve compression moulding density, avoid fine module gear blank transport process as fine module gear blank density it is inadequate caused by touch
Wound collapses scarce.
The screening mesh number of reduced iron powder is 300 mesh in the step 1, and the screening mesh number of atomized iron powder is 300 mesh.Reduction
The screening mesh number of iron powder is 300 mesh, and the screening mesh number of atomized iron powder is 300 mesh, can greatly improve the compacting of fine module gear
Density and the sintering effect in meshbeltfurnace.
The mixed proportion of reduced iron powder after sieving in the step 2 and the atomized iron powder after screening is 3:7,4:6,5:5
One of.Thin density >=6.9 of the structure of product after mixing, it is desirable that the atomized iron powder after reduced iron powder and screening after screening
Mixed proportion be 3:7, structure conventional density=6.9 of product after mixing, it is desirable that the mist after reduced iron powder and screening after screening
The mixed proportion for changing iron powder is 4:6, extensive density=6.8 of the structure of product after mixing, it is desirable that reduced iron powder and screening after screening
The mixed proportion of atomized iron powder afterwards is 5:5.
Iron mixture is detected in the step 2, tests and analyzes apparent density, the flowing of different mixing proportion
Property, compressibility.The corresponding experimental data that can obtain fine module gear is tested and analyzed, and is provided most by data comparison for production
Good experimental basis reduces product cost, improves the comprehensive performance and its cost performance of product.
Compression moulding density is 6.8 in the step 3.Suitable compression moulding density, can be improved low module
The performance of gear blank.
The pressure of compression moulding is 6 in the step 3.The pressure of suitable compression moulding, can be improved compacting
Molding effect, avoid fine module gear blank transport process as fine module gear blank density it is inadequate caused by damage collapse it is scarce.
The working principle of the invention: screening process is carried out to reduced iron powder, atomized iron powder respectively using screening machine, is sieved
Subhead number is the atomized iron powder of the reduced iron powder of 240-325 mesh, 270-400 mesh；By after screening reduced iron powder and screening after
Atomized iron powder mixing, is sufficiently stirred mixture using blender, obtains iron mixture after evenly mixing；Iron powder is mixed
It closes object and is put into compression moulding in fine module gear molding machine, obtain fine module gear blank；Fine module gear blank is placed on
High temperature sintering is carried out in meshbeltfurnace, obtains fine module gear.
After adopting the above technical scheme, use value is high, and cost of material is cheap the invention has the following beneficial effects: simple process,
Cost of material can be reduced, fine module gear function admirable after molding, intensity and sintering strength are significantly improved, avoided due to density
Damaging caused by not enough, it is scarce to collapse, and reduces product cost, improves the comprehensive performance and cost performance of product, can satisfy client to product
Performance requirement, superior performance generalization is strong in colleague field.
The above is only used to illustrate the technical scheme of the present invention and not to limit it, and those of ordinary skill in the art are to this hair
The other modifications or equivalent replacement that bright technical solution is made, as long as it does not depart from the spirit and scope of the technical scheme of the present invention,
It is intended to be within the scope of the claims of the invention.
Claims (7)
1. a kind of moulding process of fine module gear reduced iron powder, it is characterised in that: Step 1: using screening machine respectively to also
Former iron powder, atomized iron powder carry out screening process, obtain the atomization of reduced iron powder, 270-400 mesh that screening mesh number is 240-325 mesh
Iron powder；
Step 2: the reduced iron powder after screening is mixed with the atomized iron powder after screening, mixture is filled using blender
Divide stirring, obtains iron mixture after evenly mixing；
Step 3: iron mixture is put into compression moulding in fine module gear molding machine, fine module gear blank is obtained；
High temperature sintering is carried out Step 4: fine module gear blank is placed in meshbeltfurnace, obtains fine module gear.
2. a kind of moulding process of fine module gear reduced iron powder according to claim 1, it is characterised in that: the step
The particle shape of reduced iron powder is diamond shape in rapid one, and the particle shape of atomized iron powder is spherical.
3. a kind of moulding process of fine module gear reduced iron powder according to claim 1, it is characterised in that: the step
The screening mesh number of reduced iron powder is 300 mesh in rapid one, and the screening mesh number of atomized iron powder is 300 mesh.
4. a kind of moulding process of fine module gear reduced iron powder according to claim 1, it is characterised in that: the step
The mixed proportion of reduced iron powder after sieving in rapid two and the atomized iron powder after screening is one of 3:7,4:6,5:5.
5. a kind of moulding process of fine module gear reduced iron powder according to claim 1, it is characterised in that: the step
Iron mixture is detected in rapid two, tests and analyzes the apparent density, mobility, compressibility of different mixing proportion.
6. a kind of moulding process of fine module gear reduced iron powder according to claim 1, it is characterised in that: the step
The density of compression moulding is 6.8 in rapid three。
7. a kind of moulding process of fine module gear reduced iron powder according to claim 1, it is characterised in that: the step
The pressure of compression moulding is 6 in rapid three。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811386132.7A CN109604610A (en) | 2018-11-20 | 2018-11-20 | A kind of moulding process of fine module gear reduced iron powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811386132.7A CN109604610A (en) | 2018-11-20 | 2018-11-20 | A kind of moulding process of fine module gear reduced iron powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109604610A true CN109604610A (en) | 2019-04-12 |
Family
ID=66003369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811386132.7A Pending CN109604610A (en) | 2018-11-20 | 2018-11-20 | A kind of moulding process of fine module gear reduced iron powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109604610A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5711187A (en) * | 1990-10-08 | 1998-01-27 | Formflo Ltd. | Gear wheels rolled from powder metal blanks and method of manufacture |
| CN102335746A (en) * | 2011-09-26 | 2012-02-01 | 吕元之 | Powder metallurgy sedan synchronizer gear hub and production method thereof |
| CN103266271A (en) * | 2013-05-29 | 2013-08-28 | 东睦(江门)粉末冶金有限公司 | Powder metallurgical formula and technology |
-
2018
- 2018-11-20 CN CN201811386132.7A patent/CN109604610A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5711187A (en) * | 1990-10-08 | 1998-01-27 | Formflo Ltd. | Gear wheels rolled from powder metal blanks and method of manufacture |
| CN102335746A (en) * | 2011-09-26 | 2012-02-01 | 吕元之 | Powder metallurgy sedan synchronizer gear hub and production method thereof |
| CN103266271A (en) * | 2013-05-29 | 2013-08-28 | 东睦(江门)粉末冶金有限公司 | Powder metallurgical formula and technology |
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Application publication date: 20190412 |