CN106041063A - Powder metallurgy sealing part and manufacturing process thereof - Google Patents
Powder metallurgy sealing part and manufacturing process thereof Download PDFInfo
- Publication number
- CN106041063A CN106041063A CN201610503752.9A CN201610503752A CN106041063A CN 106041063 A CN106041063 A CN 106041063A CN 201610503752 A CN201610503752 A CN 201610503752A CN 106041063 A CN106041063 A CN 106041063A
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- CN
- China
- Prior art keywords
- powder metallurgy
- face
- obturator
- protuberance
- plane
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- 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.)
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Classifications
-
- 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
-
- 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
-
- 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
- B22F2003/247—Removing material: carving, cleaning, grinding, hobbing, honing, lapping, polishing, milling, shaving, skiving, turning the surface
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a powder metallurgy sealing part. The powder metallurgy sealing part comprises an annular body; multiple centered first projections and second projections are uniformly distributed on the inner ring of the annular body; the first projections include first convex parts, and first arc parts symmetrically arranged on two sides of the first convex parts; the second projections include second convex parts, second arc parts arranged on one sides of the second convex parts and straight surfaces arranged on the other sides of the second convex parts; the straight surfaces are connected with the inner ring; multiple through holes are formed in the end surface of the annular body; the through holes are corresponding to the first projections or the second projections in position; and peripherally communicated grooves are formed in the end surface of the annular body. A process for manufacturing the powder metallurgy sealing part comprises forming, sintering, grinding and machining. The powder metallurgy sealing part improves the product surface density, and reduces the cost.
Description
Technical field
The invention belongs to powder metallurgical technology, particularly relate to powder metallurgy obturator in a kind of automobile VVT system
And manufacturing process.
Background technology
Powdered metallurgical material is a kind of porous material, and material internal duct is crisscross interpenetrates.Powdered metal parts
It is applied to stop liquid or the field of gas infiltration, needs to solve the problem of sealing, in current automobile VVT system
A kind of engine hydraulic part of application uses the mode of resin impregnated sealing of hole, and general vacuum resin infiltration mode is in work
Needing before skill to carry out deoiling treatment, sealing technology includes prerinse, vacuum drying, vacuum infiltration, cleaning, heat cure.Resin soaks
The yields of the mode oozed is the highest, and extra cost is bigger.
Summary of the invention
The invention aims to solve above-mentioned Sealing Technology problem, and provide a kind of powder metallurgy obturator and
Manufacturing process, thus realize improving product surface density, reduce cost.In order to achieve the above object, technical solution of the present invention is such as
Under:
Powder metallurgy obturator, including ring body, the inner ring of described ring body is provided with some centripetal uniform
One protruding and the second projection；Described first projection includes the first protuberance and is respectively arranged on described first protuberance monosymmetric first
Curved portions, described second projection includes the second protuberance, the second curved portions being located at described second protuberance side and is located at described
Facing directly of two protuberance opposite sides, described in face directly and connect with described inner ring, the end face of described ring body is provided with some through holes, described
Through hole is corresponding with described first protruding or described second projection position, and it is recessed that the end face of described ring body is provided with that circumference communicates
Groove.
Concrete, described first protuberance includes the first end face and is respectively arranged on the first side of described first end face both sides.
Concrete, described first curved portions includes the first arcwall face and the first plane, described first plane and described first
Formation right angle, side.
Concrete, described second protuberance includes the second end face and is respectively arranged on the second side of described second end face both sides.
Concrete, described second curved portions includes the second arcwall face and the second plane, described second plane and described second
Formation right angle, side.
Concrete, described in face directly and be provided with and the 3rd plane at described second formation right angle, side.
Concrete, described groove extends respectively in described first protruding and described second projection dodges described through hole.
A kind of manufacturing process for powder metallurgy obturator, it is characterised in that comprise the following steps:
S1, shapes, and the raw material of configuration is added press die cavity, and pressurize 6T/cm2-7T/cm2The rear demoulding；
S2, sintering, after the demoulding, product is added sintering furnace, temperature sets 1100 DEG C-1200 DEG C, and the time sets 30min-
45min；
S3, rolls, and the product after sintering extrudes on rolling body so that it is surface roughness is less than Ra0.8, surface
Density is more than or equal to 7.8g/cm3；
S4, machining, the dimensional requirement of product is reached after rolling by machining.
Concrete, also include checking packaging, check product surface state after machining, pack after confirmation.
Compared with prior art, powder metallurgy obturator of the present invention and the beneficial effect major embodiment of manufacturing process thereof
: the technique carrying out rolling or extruding after product thermal sintering, improve product surface density, sealing property is close to steel
Part；Improve product surface fineness, improve product service life；Eliminate extra sealing technology, such as resin impregnated, fall
Low manufacturing cost；Process is not limited solely to external diameter and the inner diameter shape of this obturator, highly versatile.
Accompanying drawing explanation
Fig. 1 is one of structural representation of embodiment of the present invention 1-3；
Fig. 2 is the two of the structural representation of the present embodiment 1-3；
Fig. 3 is the performance graph of the powder metallurgy obturator of the present embodiment 1-3；
In figure, numeral represents:
1 ring body, 11 inner rings, 2 first projections, 21 first protuberances, 22 first curved portions, 23 first end faces, 24 first
Side, 25 first arcwall faces, 26 first planes, 3 second projections, 31 second protuberances, 32 second curved portions, 33 face directly, 34 second
End face, 35 second sides, 36 second arcwall faces, 37 second planes, 38 the 3rd planes, 4 through holes, 5 grooves.
Detailed description of the invention
Technical scheme in the embodiment of the present invention will be carried out clear, complete description below in conjunction with the accompanying drawings, it is clear that retouched
The embodiment stated is only a part of embodiment of the present invention rather than whole embodiments.
Embodiment 1:
With reference to shown in Fig. 1-2, the present embodiment is powder metallurgy obturator, including ring body 1, and ring body 1 interior
Circle 11 is provided with centripetal uniform three first protruding 2 and two the second projections 3；First projection 2 includes the first protuberance 21 and difference
Being located at monosymmetric first curved portions 22 of the first protuberance 21, the first protuberance 21 includes the first end face 23 and is respectively arranged on the first top
First side 24 of both sides, face 23, the first curved portions 22 includes the first arcwall face 25 and the first plane 26, the first plane 26 and
One side 24 forms right angle.
Second projection 3 includes the second protuberance 31, the second curved portions 32 being located at the second protuberance 31 side and to be located at second convex
Portion 31 opposite side face 33 directly, face 33 directly and connect with inner ring 11, the second protuberance 31 includes the second end face 34 and is respectively arranged on second
Second side 35 of end face 34 both sides, the second curved portions 32 includes the second arcwall face 36 and the second plane 37, the second plane 37 He
Second side 35 forms right angle.Face 33 directly and be provided with the 3rd plane 38 and the second side 35 forms right angle.
The end face of ring body 1 is provided with five through holes 4, and through hole 4 is corresponding with the position of the first protruding 2 or second projection 3, ring
The end face of shape body 1 is provided with the groove 5 that circumference communicates, groove 5 extend in the first protruding 2 and second projection 3 respectively dodge logical
Hole 4.
A kind of manufacturing process for powder metallurgy obturator comprises the following steps: the first step, the raw material that will have configured
The addition press die cavity that powder is quantitative, pressurize 7T/cm2The rear demoulding, obtains blank after the demoulding, utilize automatic assembly line to transfer to
Subsequent handling；Second step, by automatic assembly line, joins continuous sintering furnace by forming workblank, and temperature sets 1100 DEG C,
Time sets 45min；3rd step, is fixed on sintered body on rolling body, improves the close of product surface by rolling or extruding
Degree reaches sealing effectiveness so that it is sealing property is consistent with fine and close steel part, and the internal diameter of product and the precision of external diameter reach IT7, surface
Roughness is less than Ra0.8, and area density is more than or equal to 7.8g/cm3；4th step, the product after rolling is reached by process for machining
Dimensional requirement to finished goods；5th step, checks product surface state after machining, carry out packaging vanning after confirming zero defect.
Embodiment 2:
The structure of product is same as in Example 1, does not repeats them here, and its distinctive points is manufacturing process.
The manufacturing process of the powder metallurgy obturator of the present embodiment comprises the following steps: the first step, former by configured
The addition press die cavity that material powder is quantitative, pressurize 6T/cm2The rear demoulding, obtains blank after the demoulding, utilize automatic assembly line to shift
To subsequent handling；Second step, by automatic assembly line, joins continuous sintering furnace by forming workblank, and temperature sets 1200
DEG C, the time sets 30min；3rd step, is fixed on sintered body on rolling body, improves product surface by rolling or extruding
Density reaches sealing effectiveness so that it is sealing property is consistent with fine and close steel part, and the internal diameter of product and the precision of external diameter reach IT7, table
Surface roughness is less than Ra0.8, and area density is more than or equal to 7.8g/cm3；4th step, the product after rolling passes through process for machining
Reach the dimensional requirement of finished goods；5th step, checks product surface state after machining, carry out packaging dress after confirming zero defect
Case.
Embodiment 3:
The structure of product is same as in Example 1, does not repeats them here, and its distinctive points is manufacturing process.
The manufacturing process of the powder metallurgy obturator of the present embodiment comprises the following steps: the first step, former by configured
The addition press die cavity that material powder is quantitative, pressurize 6.5T/cm2The rear demoulding, obtains blank after the demoulding, utilize automatic assembly line to turn
Move on to subsequent handling；Second step, by automatic assembly line, joins continuous sintering furnace by forming workblank, and temperature sets
1150 DEG C, the time sets 40min；3rd step, is fixed on sintered body on rolling body, by rolling or extrude raising product table
The density in face reaches sealing effectiveness so that it is sealing property is consistent with fine and close steel part, and the internal diameter of product and the precision of external diameter reach
IT7, surface roughness is less than Ra0.8, and area density is more than or equal to 7.8g/cm3；4th step, the product after rolling is added by machine
Work technique reaches the dimensional requirement of finished goods；5th step, checks product surface state, wraps after confirming zero defect after machining
Dress vanning.
With reference to shown in Fig. 3, enter according to the two pieces product that the manufacturing process of above-described embodiment powder metallurgy obturator draws
Line density is tested, and the outer ring of distance finger ring shape body 1 length when inner ring carries out cutting test, the outer ring density after rolling connects
Nearly 7.8g/cm3, along with measuring distance is the biggest, outer ring declines therewith to the density of inner ring.
During application above example, the technique carrying out rolling or extruding after product thermal sintering, improve product table
Surface density, sealing property is close to steel part；Improve product surface fineness, improve product service life；Eliminate extra
Sealing technology, such as resin impregnated, reduces manufacturing cost；Process is not limited solely to external diameter and the internal diameter shape of this obturator
Shape, highly versatile.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, not
On the premise of departing from the invention design, it is also possible to making some deformation and improvement, these broadly fall into the protection model of the present invention
Enclose.
Claims (9)
1. powder metallurgy obturator, it is characterised in that: include that ring body, the inner ring of described ring body are provided with some centripetal
Uniform first is protruding protruding with second；Described first projection includes the first protuberance and is respectively arranged on described first protuberance both sides pair
The first curved portions claimed, described second projection includes the second protuberance, the second curved portions being located at described second protuberance side and sets
In facing directly of described second protuberance opposite side, described in face directly and connect with described inner ring, the end face of described ring body is provided with some
Through hole, described through hole is corresponding with described first protruding or described second projection position, and the end face of described ring body is provided with week
To the groove communicated.
Powder metallurgy obturator the most according to claim 1, it is characterised in that: described first protuberance includes the first end face
With the first side being respectively arranged on described first end face both sides.
Powder metallurgy obturator the most according to claim 2, it is characterised in that: described first curved portions includes the first arc
Shape face and the first plane, described first plane and described first formation right angle, side.
Powder metallurgy obturator the most according to claim 1, it is characterised in that: described second protuberance includes the second end face
With the second side being respectively arranged on described second end face both sides.
Powder metallurgy obturator the most according to claim 4, it is characterised in that: described second curved portions includes the second arc
Shape face and the second plane, described second plane and described second formation right angle, side.
Powder metallurgy obturator the most according to claim 1, it is characterised in that face directly described in: and be provided with and described second
3rd plane at formation right angle, side.
Powder metallurgy obturator the most according to claim 1, it is characterised in that: described groove is respectively to described first convex
Rise and the described second protruding interior extension dodges described through hole.
8. the manufacturing process for the powder metallurgy obturator described in claim 1, it is characterised in that include following step
Rapid:
S1, shapes, and the raw material of configuration is added press die cavity, and pressurize 6T/cm2-7T/cm2The rear demoulding；
S2, sintering, after the demoulding, product is added sintering furnace, temperature sets 1100 DEG C-1200 DEG C, and the time sets 30min-45min；
S3, rolls, and the product after sintering extrudes on rolling body so that it is surface roughness is less than Ra0.8, area density
More than or equal to 7.8g/cm3；
S4, machining, the dimensional requirement of product is reached after rolling by machining.
The manufacturing process of powder metallurgy obturator the most according to claim 8, it is characterised in that: also include checking bag
Dress, checks product surface state, packs after confirmation after machining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610503752.9A CN106041063A (en) | 2016-06-30 | 2016-06-30 | Powder metallurgy sealing part and manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610503752.9A CN106041063A (en) | 2016-06-30 | 2016-06-30 | Powder metallurgy sealing part and manufacturing process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106041063A true CN106041063A (en) | 2016-10-26 |
Family
ID=57200501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610503752.9A Pending CN106041063A (en) | 2016-06-30 | 2016-06-30 | Powder metallurgy sealing part and manufacturing process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106041063A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108705088A (en) * | 2018-07-23 | 2018-10-26 | 江苏智造新材有限公司 | A kind of automobile VVT dry-type belts wheel stator and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10312191A1 (en) * | 2003-03-19 | 2004-09-30 | Victor Kocheshev | Circular piston engine with variable sealing and wear compensation where the valve plates are guided along the specially shaped projections on the stator and rotor |
| JP2004301172A (en) * | 2003-03-28 | 2004-10-28 | Denso Corp | Electromagnetic actuator |
| CN102116372A (en) * | 2010-07-26 | 2011-07-06 | 陈斌 | Consubstantial flanged sealing gasket and production method thereof |
| CN204691843U (en) * | 2015-06-09 | 2015-10-07 | 吕元之 | Changeable air valve powder metallurgy VVT stator |
| CN204877568U (en) * | 2015-06-23 | 2015-12-16 | 华晨汽车集团控股有限公司 | A low friction stator and rotor subassembly for variable valve system in right time |
| CN106150587A (en) * | 2016-08-29 | 2016-11-23 | 台州德尔福汽车部件有限公司 | A kind of middle variable valve timing apparatus and electromotor |
-
2016
- 2016-06-30 CN CN201610503752.9A patent/CN106041063A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10312191A1 (en) * | 2003-03-19 | 2004-09-30 | Victor Kocheshev | Circular piston engine with variable sealing and wear compensation where the valve plates are guided along the specially shaped projections on the stator and rotor |
| JP2004301172A (en) * | 2003-03-28 | 2004-10-28 | Denso Corp | Electromagnetic actuator |
| CN102116372A (en) * | 2010-07-26 | 2011-07-06 | 陈斌 | Consubstantial flanged sealing gasket and production method thereof |
| CN204691843U (en) * | 2015-06-09 | 2015-10-07 | 吕元之 | Changeable air valve powder metallurgy VVT stator |
| CN204877568U (en) * | 2015-06-23 | 2015-12-16 | 华晨汽车集团控股有限公司 | A low friction stator and rotor subassembly for variable valve system in right time |
| CN106150587A (en) * | 2016-08-29 | 2016-11-23 | 台州德尔福汽车部件有限公司 | A kind of middle variable valve timing apparatus and electromotor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108705088A (en) * | 2018-07-23 | 2018-10-26 | 江苏智造新材有限公司 | A kind of automobile VVT dry-type belts wheel stator and preparation method thereof |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161026 |
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