CN104785782B - Powder metallurgy high-pressure hydraulic stator production process - Google Patents
Powder metallurgy high-pressure hydraulic stator production process Download PDFInfo
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- CN104785782B CN104785782B CN201510053135.9A CN201510053135A CN104785782B CN 104785782 B CN104785782 B CN 104785782B CN 201510053135 A CN201510053135 A CN 201510053135A CN 104785782 B CN104785782 B CN 104785782B
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Abstract
The invention discloses a powder metallurgy high-pressure hydraulic stator production process. The production process comprises the following steps of material selecting, grinding tool machining, forming pressing, sintering hardening, tempering, resin impregnating for hole sealing and fine machining. By the adoption of the technical scheme, high-pressure hydraulic stators can be produced continuously and stably, and the quality is stable and reliable; compared with traditional machining, the flow has the advantages that the production process is simple, the period is short, and the cost is low.
Description
Technical field
The present invention relates to a kind of production technology is and in particular to a kind of powder metallurgy high-pressure and hydraulic stator production technology.
Background technology
In ordinary powder metallurgical production process, the technological process producing hydraulic pressure stator is relatively many, but produces high-pressure and hydraulic
The technological process of stator is very few because the stator density of ordinary powder metallurgical production is relatively low, subsequently generally by steam treatment Lai
Make up density low and the problems such as reveal, so lead to the hardness of stator low, wearability is poor, the shortcomings of service life is short.
Content of the invention
It is an object of the invention to the problem above overcoming prior art to exist, provide a kind of powder metallurgy high-pressure and hydraulic fixed
Sub- production technology.
For achieving the above object, reach above-mentioned technique effect, the present invention is achieved through the following technical solutions:
A kind of powder metallurgy high-pressure and hydraulic stator production technology, comprises the following steps:
Step 1) selection, the behaviour in service according to stator and intensity, the metallurgical material standard of combining powder establishes stator
Powder assortment class；
Step 2) mould processing, according to the blank dimension specification of stator, in conjunction with this powder material during size changing rate,
Make and process corresponding mould, the processing of mould is through common machining, wire cutting, electric spark, polishing, grinding, inspection
Etc. flow process；
Step 3) shaping compacting, according to the density specification of stator, height dimension requires, from corresponding powder material and corresponding tonnage
Press suppress stator profiled member；
Step 4) is sinter-hardened, the profiled member of stator is sintered 30 minutes about at 1120 DEG C, after sintering, to product
Carry out fast cold treatment, rapid cooling frequency is 30hz, make product Quenching Treatment, improve product hardness, reach at similar to common heat
Reason effect；
Step 5) temper, sinter-hardened stator is carried out temper, prevents from splitting because stress raisers produce
Line and product failure；
Step 6) resin impregnates sealing of hole, the stator after tempering is carried out resin dipping sealing of hole, is mainly vacuumizing
In the case of 0.7kpa, stator is carried out organic matter infiltration process, then pressurization 0.6mpa makes stator fully infiltrate, then cleans place
Reason falls the organic matter of stator surface, finally heated to 93 DEG C, 15 minutes, the organic matter in stator capillary aperture is carried out thermosetting
Change, so thoroughly seal the pore of stator using the organic matter of heat cure, improve the sealing of stator；
Step 7) essence mechanical process, mainly stator faces corase grind, fine grinding, the machining of cycloid of inner chamber, after end face fine-grinding
Within the flatness of both ends of the surface is up to 0.002, within height-precision reaches ± 0.003.
Further, the selection in described step (1) is flc-4608.
Further, the density in described step (3) is 7.10g/cm3Left and right, stator height 24mm.
Further, the hardness after the stator sintering in described step (4) reaches hrc40.
Preferably, 200 DEG C of stator temperature in described step (5), and 120 minutes need to be incubated.
Further, the test seal pressure of the stator in described step (6) is up to 14mpa.
Further, the stator after the finishing in described step (7) can match assembling with rotor, is applied to hydraulic pressure
In system.
The invention has the beneficial effects as follows:
Using technical solution of the present invention, can continuous and stable production high-pressure and hydraulic stator, and steady quality is reliable, with tradition
Machining compare, changing flow process and having has simple production process, cycle is short, low cost and other advantages.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, below with presently preferred embodiments of the present invention and coordinate accompanying drawing describe in detail as after.
The specific embodiment of the present invention is shown in detail in by following examples and its accompanying drawing.
Brief description
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this
Bright schematic description and description is used for explaining the present invention, does not constitute the improper restriction bright to we.In the accompanying drawings:
Fig. 1 is the sintering temperature curve schematic diagram of powder metallurgy high-pressure and hydraulic stator production technology of the present invention；
Fig. 2 is the stator structure schematic diagram of powder metallurgy high-pressure and hydraulic stator production technology of the present invention.
Specific embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, design feature and the technology implementation process of the present invention to be described in detail in detail:
Referring to shown in Fig. 1-Fig. 2, a kind of powder metallurgy high-pressure and hydraulic stator production technology, comprise the following steps:
Step 1) selection, the behaviour in service according to stator and intensity, the metallurgical material standard of combining powder establishes stator
Powder assortment class；
Step 2) mould processing, according to the blank dimension specification of stator, in conjunction with this powder material during size changing rate,
Make and process corresponding mould, the processing of mould is through common machining, wire cutting, electric spark, polishing, grinding, inspection
Etc. flow process；
Step 3) shaping compacting, according to the density specification of stator, height dimension requires, from corresponding powder material and corresponding tonnage
Press suppress stator profiled member；
Step 4) is sinter-hardened, the profiled member of stator is sintered 30 minutes about at 1120 DEG C, after sintering, to product
Carry out fast cold treatment, rapid cooling frequency is 30hz, make product Quenching Treatment, improve product hardness, reach at similar to common heat
Reason effect；
Step 5) temper, sinter-hardened stator is carried out temper, prevents from splitting because stress raisers produce
Line and product failure；
Step 6) resin impregnates sealing of hole, the stator after tempering is carried out resin dipping sealing of hole, is mainly vacuumizing
In the case of 0.7kpa, stator is carried out organic matter infiltration process, then pressurization 0.6mpa makes stator fully infiltrate, then cleans place
Reason falls the organic matter of stator surface, finally heated to 93 DEG C, 15 minutes, the organic matter in stator capillary aperture is carried out thermosetting
Change, so thoroughly seal the pore of stator using the organic matter of heat cure, improve the sealing of stator；
Step 7) essence mechanical process, mainly stator faces corase grind, fine grinding, the machining of cycloid of inner chamber, after end face fine-grinding
Within the flatness of both ends of the surface is up to 0.002, within height-precision reaches ± 0.003.
Further, the selection in described step (1) is flc-4608.
Further, the density in described step (3) is 7.10g/cm3Left and right, stator height 24mm.
Further, the hardness after the stator sintering in described step (4) reaches hrc40.
Preferably, 200 DEG C of stator temperature in described step (5), and 120 minutes need to be incubated.
Further, the test seal pressure of the stator in described step (6) is up to 14mpa.
Further, the stator after the finishing in described step (7) can match assembling with rotor, is applied to hydraulic pressure
In system.
The principle of the present invention:
The technological process of production of this stator is improved the hardness of stator, wearability and uses the longevity by sinter-hardened technique
Life.Another by resin impregnate sealing of hole make up stator density low and the problems such as reveal.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (7)
1. a kind of powder metallurgy high-pressure and hydraulic stator production technology is it is characterised in that comprise the following steps:
Step 1) selection, the behaviour in service according to stator and intensity, the metallurgical material standard of combining powder establishes the powder material of stator
Species；
Step 2) mould processing, according to the blank dimension specification of stator, in conjunction with this powder material during size changing rate, make
Process corresponding mould, the processing of mould is through common machining, wire cutting, electric spark, polishing, grinding, inspection process；
Step 3) shaping compacting, according to the density specification of stator, height dimension requires, from the pressure of corresponding powder material and corresponding tonnage
The profiled member of stator suppressed by machine；
Step 4) is sinter-hardened, the profiled member of stator is sintered 30 minutes at 1120 DEG C, after sintering, carries out rapid cooling to product
Process, rapid cooling frequency is 30hz, make product Quenching Treatment, improve product hardness, reach similar to common thermal effectiveness；
Step 5) temper, sinter-hardened stator is carried out temper, prevents because stress raisers crack
Product failure；
Step 6) resin impregnates sealing of hole, the stator after tempering is carried out resin dipping sealing of hole, in the case of vacuumizing 0.7kpa
Stator is carried out organic matter infiltration process, then pressurization 0.6mpa makes stator fully infiltrate, then cleaning treatment falls stator surface
Organic matter, 15 minutes, the organic matter in stator capillary aperture is carried out heat cure by finally heated to 93 DEG C, so utilizes thermosetting
The organic matter changed thoroughly seals the pore of stator, improves the sealing of stator；
Step 7) essence mechanical process, stator faces are roughly ground, fine grinding, the machining of cycloid of inner chamber, and after end face fine-grinding, both ends of the surface is flat
Within face degree is up to 0.002, within height-precision reaches ± 0.003.
2. powder metallurgy high-pressure and hydraulic stator production technology according to claim 1 is it is characterised in that described step (1)
In selection be flc-4608.
3. powder metallurgy high-pressure and hydraulic stator production technology according to claim 1 is it is characterised in that described step (3)
In density be 7.10g/cm3, stator height 24mm.
4. powder metallurgy high-pressure and hydraulic stator production technology according to claim 1 is it is characterised in that described step (4)
In stator sintering after hardness reach hrc40.
5. powder metallurgy high-pressure and hydraulic stator production technology according to claim 1 is it is characterised in that described step (5)
In 200 DEG C of stator temperature, and 120 minutes need to be incubated.
6. powder metallurgy high-pressure and hydraulic stator production technology according to claim 1 is it is characterised in that described step (6)
In stator test seal pressure up to 14mpa.
7. powder metallurgy high-pressure and hydraulic stator production technology according to claim 1 is it is characterised in that described step (7)
In finishing after stator i.e. can with rotor match assembling, be applied in hydraulic system.
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| CN201510053135.9A CN104785782B (en) | 2015-02-02 | 2015-02-02 | Powder metallurgy high-pressure hydraulic stator production process |
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| CN201510053135.9A CN104785782B (en) | 2015-02-02 | 2015-02-02 | Powder metallurgy high-pressure hydraulic stator production process |
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| CN104785782B true CN104785782B (en) | 2017-01-25 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110492700A (en) * | 2019-08-13 | 2019-11-22 | 宁国井田机电有限公司 | A kind of production technology of compressor motor stator |
| CN110699628A (en) * | 2019-10-14 | 2020-01-17 | 洛阳轴承研究所有限公司 | Hole sealing method of plasma spraying coating and insulating bearing |
| CN112536437A (en) * | 2020-11-03 | 2021-03-23 | 苏州莱特复合材料有限公司 | Powder metallurgy high-strength spring guide seat of hydraulic system and production process thereof |
| CN112522632A (en) * | 2020-12-09 | 2021-03-19 | 苏州莱特复合材料有限公司 | Powder metallurgy wear-resistant stator and production process thereof |
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|---|---|---|---|---|
| CN1265118A (en) * | 1997-07-03 | 2000-08-30 | 洛克泰特公司 | Room temperature curing controlled strength high temperature resistant anaerobic adhesive compositions |
| CN101182836A (en) * | 2006-11-15 | 2008-05-21 | 日立粉末冶金株式会社 | Sintered composite machine part and manufacturing method thereof |
| CN101641174A (en) * | 2007-03-21 | 2010-02-03 | 霍加纳斯股份有限公司 | Powder metal polymer composites |
| CN102345677A (en) * | 2010-08-02 | 2012-02-08 | 保来得株式会社 | Method for producing fluid dynamic pressure bearing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6548012B2 (en) * | 1999-05-28 | 2003-04-15 | National Research Council Of Canada | Manufacturing soft magnetic components using a ferrous powder and a lubricant |
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2015
- 2015-02-02 CN CN201510053135.9A patent/CN104785782B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1265118A (en) * | 1997-07-03 | 2000-08-30 | 洛克泰特公司 | Room temperature curing controlled strength high temperature resistant anaerobic adhesive compositions |
| CN101182836A (en) * | 2006-11-15 | 2008-05-21 | 日立粉末冶金株式会社 | Sintered composite machine part and manufacturing method thereof |
| CN101641174A (en) * | 2007-03-21 | 2010-02-03 | 霍加纳斯股份有限公司 | Powder metal polymer composites |
| CN102345677A (en) * | 2010-08-02 | 2012-02-08 | 保来得株式会社 | Method for producing fluid dynamic pressure bearing |
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