CN104712494B - A kind of screw drilling tool stator made using PTFE and FEP blends and the fluorine material applied to the stator - Google Patents
A kind of screw drilling tool stator made using PTFE and FEP blends and the fluorine material applied to the stator Download PDFInfo
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- CN104712494B CN104712494B CN201410712265.4A CN201410712265A CN104712494B CN 104712494 B CN104712494 B CN 104712494B CN 201410712265 A CN201410712265 A CN 201410712265A CN 104712494 B CN104712494 B CN 104712494B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/18—Homopolymers or copolymers or tetrafluoroethene
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
- F03C2/00—Rotary-piston engines
- F03C2/08—Rotary-piston engines of intermeshing-engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
The present invention relates to it is a kind of using PTFE and FEP blends make screw drilling tool stator, the stator from outside to inside successively be mainly stator metal outer pipe, polymeric layer, wherein, polymeric layer using PTFE and FEP blends making.By using PTFE and FEP blends wearability, operating temperature section, good weatherability and the aspects such as coefficient of friction is low advantage, so as to be effectively improved the performance of drilling tool in the operating temperature section of screw drilling tool stator and in wear rate etc., so as to greatly extend the service life of screw drilling tool stator, production maintenance cost is reduced, improves drilling efficiency.
Description
Technical field
The present invention relates to a kind of stator of helicoid hydraulic motor, more particularly to a kind of spiral shell made using PTFE and FEP blends
Bar drill has stator and fluorine material.
Background technology
Helicoid hydraulic motor is a kind of using drilling fluid as power, liquid pressure energy is switched to the positive displacement underground power drilling of mechanical energy
Tool.It is typically made up of by-passing valve, screw motor, universal joint, bearing and several parts of drive shaft, and its core is screw motor.And
Screw motor is made up of stator and rotor again.In the prior art, as shown in figure 1, stator includes housing 100 and the matching of cast
The rubber bushing 201 being close-coupled in inner walls, the thread groove of indent is provided with the inwall of shown cast housing 100,
The thread groove is provided with least 3 and is disposed in parallel in inner walls 100, and the hand of spiral of the thread groove is consistent
And axle is stretched by its hand of spiral of stator center axle, the rubber bushing 201 is by high-pressure injection in housing 100
On wall, connection is matched in shape of threads and with housing 100.
Due to being provided with the thread groove of indent on the tubular outer casing inwall of stator in the prior art, therefore, tubular outer casing adds
Work technical difficulty is high, complex forming technology, and produces more processing clout, greatly increases processing cost.In addition, rubber bushing
It is that moulding process is also extremely complex by high-pressure injection on the inwall of housing, high processing costs, efficiency is low.It is and existing
The rubber bushing material of helicoid hydraulic motor is generally NBR and HNBR in technology, wherein, HNBR limiting temperature (static state) is 176
DEG C, but the long-term temperature of high temperature well, close to 170 DEG C, according to the working characteristics of helicoid hydraulic motor, temperature is easy to concentrate on rubber
The part that bushing contacts with rotor, the dynamic heat build up for mutually extruding, reversing between stator and rotor.When temperature is higher and concentrates on for a long time
Area above, then it will cause rubber bushing aging, so as to cause rubber failure.Therefore, the helicoid hydraulic motor of high temperature well uses the longevity
Order general more than 100 hours, service life is short, and maintenance requirement is high, have impact on the efficiency and development progress of drilling well work, adds brill
Well cost.
For above mentioned problem existing for solving helicoid hydraulic motor in the prior art, step up to develop and develop for manufacturing stator
Wear-resistant resistant to elevated temperatures elastomeric material and reliable bearing arrangement, so that the working life of screw drill is significantly improved, together
When develop low-speed big screw rod to be also a key breakthrough direction of this area suitable for drilling deep hole and superdeep holes.
The content of the invention
To solve the above problems, the invention discloses a kind of screw drilling tool stator made using PTFE and FEP blends
And PTFE the and FEP blends applied to the stator, by using PTFE and FEP blends wearability, operating temperature section,
The advantage for the aspects such as good weatherability and coefficient of friction are low, so as in the operating temperature section of screw drilling tool stator and wear
Rate etc. is effectively improved the performance of drilling tool, so as to greatly extend the service life of screw drilling tool stator, reduces production dimension
Cost is protected, improves drilling efficiency.
The screw drilling tool stator disclosed by the invention made using PTFE and FEP blends, it is mainly successively from outside to inside
Stator metal outer pipe, polymeric layer, polymeric layer are made using PTFE and FEP blends.In the present invention program using PTFE and
FEP blends prepare the polymeric layer of stator, fluorine material are used in screw drilling tool stator breakthroughly, so that screw rod
Drilling tool stator has more preferable wearability, anti-flammability and resistance to elevated temperatures, and production operation temperature is high, and wear rate is low, so as to greatly
Ground extends the service life of stator, reduces the maintenance cost of equipment.
As a preferred embodiment, being provided with the thread groove of indent on polymeric layer inwall or outer wall, thread groove is provided with least 1
Bar and it is arranged on side by side on the wall of polymeric layer, the hand of spiral of thread groove is consistent and using stator center axle as its spiral shell
Revolve direction stretching, extension axle.This programme can be threaded groove knot on the inwall of stator either on outer wall or on inwall and outer wall
Structure, it can be matched by the screw thread slot structure set on outer wall with the thread groove being correspondingly arranged on stator metal outer pipe inwall kiss
Close, play and fix more stable effect with stator metal outer pipe, it is possible to increase stator structure stability, increase the service life,
Simultaneously according to the needs of production and application, the quantity of thread groove is set, is to be uniformly distributed on wall or partly uneven distribution
Or closely it is disposed adjacently on wall so that the structure of stator has larger flexibility, and stator can be according to rotor
The parameter of power, torque etc. carrys out the arrangement and design of actual selection thread groove.
As a preferred embodiment, thread groove is disposed adjacently on whole polymeric layer inwall or outer wall side by side.In this programme
Thread groove by one either it is arranged side by side it is a plurality of in a manner of spiral be arranged on the inwall of whole polymeric layer or the surface of outer wall,
So that stator is avoided during production operation, because of unbalance stress to the torque power more stable and uniform of rotor
And equipment is caused damage, so as to the service life of extension device, reduce production cost.
PTFE and FEP blends disclosed by the invention applied to screw drilling tool stator, including PTFE, FEP and addition
Agent, described additive include reinforcing fiber and metal dust, and each component composition is (in terms of parts by weight)：PTFE and
100 parts of FEP blends, additive 10-30 parts.
PTFE the and FEP blends that the present invention is applied to screw drilling tool stator are made, wherein, FEP watery fusions point is
580F, density 2.15g/cm3, it is a kind of soft plastic, its tensile strength, wearability, creep resistance are less than many engineering plastics
Material, and be also equipped with not igniting, the diffusion of flame can be prevented, the features such as weatherability is excellent, and coefficient of friction is relatively low.And PTFE density
For 2.1-2.3g/cm3, engineering properties is softer, and surface energy is low, has high-low temperature resistant, corrosion-resistant, weatherability, low-friction coefficient, height
The performances such as lubrication.PTFE and FEP blends are applied to screw drilling tool stator by the present invention, so as to be effectively reduced long-term
Deformation and loss in use, improve tolerance of the stator to environmental factors such as drilling well high temperature, high humidity, corrosivity, so as to greatly
Ground extends the service life of stator-device, reduces the operation and maintenance cost of helicoid hydraulic motor and its stator, and improves life
The efficiency of production.
In addition, being also added with additive in PTFE and FEP blends of the present invention, additive is by reinforcing fiber and metal dust
Composition.Wherein, reinforcing fiber can increase substantially blend matrix on the basis of the original processing characteristics of blend is ensured
Physical and mechanical property, while improve the performances such as the dimensional stability, heat resistance, wear resistance of blend, reduce cost.And
Metal dust can improve the performances such as the thermal conductivity of matrix, rigidity, intensity, hardness, heat resistance, wear resistance, by reinforcing fiber
PTFE and FEP blends of the present invention are filled with metal dust compounding, the intensity, hardness, heat resistance of blend can be significantly improved
Etc. combination property.And pass through present invention research and draw, the wearability of the product of invention blend and the intensity of product are linear
Relation, intensity is higher, and wearability is better.
As a preferred embodiment, PTFE accounts for 70-90% in PTFE and FEP blends, FEP accounts for 10-30%.
As a preferred embodiment, the reinforcing fiber and the weight of metal dust ratio are (1.5-2.5)：1.Additive is upper
When stating in the range of weight ratio, due to the influence of the synergy between reinforcing fiber and metal dust, the final intensity of product and
Wearability is highly improved.
As a preferred embodiment, the reinforcing fiber be carbon fiber, glass fibre, boron fibre, aramid fiber, polyester fiber,
One or more in nylon fiber, polyimide fiber.The diameter of reinforcing fiber is preferably 10-20 μm, and draw ratio is (100-
200)：1.
Reinforcing fiber of the present invention further preferably first carries out surface modification, the surface modifier bag using surface modifier
Rare earth concentration is included as 0.1-0.5% rare-earth modifier and 2-5% coupling agent.Modified technique is preferably normal by reinforcing fiber
Inserted under temperature in the surface modifier being configured to according to the above ratio and infiltrate 1-3h, 3-4h is then dried at 80-120 DEG C is made.It is even
Connection agent and rare earth treating agent can improve the surface property of reinforcing fiber, improve the surface-active of reinforcing fiber, increase so that improving
Strong Interface adhesive strength between fiber and blend matrix, makes reinforcing fiber be not easy to depart from from blend matrix, prevents blending
The transfer of thing matrix, reduce product fatigue crack and the generation peeled off, reduce the abrasion of product.
As a preferred embodiment, the metal dust is copper powder, iron powder, tungsten powder, titanium valve, aluminium powder, one kind in lead powder or more
Kind.The present invention is further preferably made up of two kinds and above metal dust, and mass ratio is any ratio.And the preferred grain of metal dust
Footpath is less than 0.3 μm.
The present invention by using PTFE and FEP blends make screw drilling tool stator so that drilling tool and apply the drilling tool
Stator have the following advantages that：
High temperature resistant --- using operating temperature up to 250 DEG C.
It is low temperature resistant --- there is good mechanical tenacity；- 196 DEG C are dropped temperature to, can also keep 5% elongation
Rate.
It is corrosion-resistant --- to most of chemicals and solvent, show inertia, can strong alkali-acid resistance, water and various organic
Solvent.
Weatherability --- there is aging life-span optimal in plastics.
High lubrication --- it is coefficient of friction the lowest in solid material.
Do not adhere to --- it is surface tension minimum in solid material, does not adhere to any material.
It can preferably meet screw drilling tool stator in the right high request of subterranean well environment.
Compared with prior art, the present invention has following advantage：
1. PTFE and FEP blends long-term use temperature disclosed by the invention is more than 200 DEG C, and when more than 250 DEG C,
Still there is good practical performance, be significantly better than stator current phase material NBR and HNBR.
2. PTFE and FEP blends of the present invention have excellent wearability and creep resistance, have than PTFE smaller
Compression set, more preferable resilience.
3. the present invention enhancing modification is carried out using reinforcer to PTFE and FEP blends, make its intensity it is higher, friction be
The performances such as the smaller, resiliences of number are more preferable, corrosion resistance and heat-resisting quantity are more superior, and service life is more long.
4. the stator of helicoid hydraulic motor of the present invention is resistant to the long-term corrosion of drilling fluid, strong alkali-acid resistance.
5. the service life of the stator of helicoid hydraulic motor of the present invention can be increased to exceed more than 250h.
6. the stator of helicoid hydraulic motor of the present invention can use in general expressing technique to be molded, processability is good, and processing technology is simple, greatly
It is big to reduce processing cost.
Brief description of the drawings
Fig. 1, stator disclosed by the invention a kind of embodiment structural representation；
Fig. 2, stator disclosed by the invention a kind of embodiment front view (polymeric layer not uniform thickness)；
Fig. 3, stator disclosed by the invention another embodiment front view (polymeric layer uniform thickness).
Reference numerals list：
1st, stator metal outer pipe；2nd, polymeric layer；3rd, rotor.
Embodiment
It is below the specific embodiment of the present invention, and is described with reference to the drawings and technical scheme is made further to retouch
State, but the present invention is not limited to these embodiments.
The screw drilling tool stator disclosed by the invention made using PTFE and FEP blends, it is mainly successively from outside to inside
Stator metal outer pipe 1, polymeric layer 2, polymeric layer are made using PTFE and FEP blends.
As a preferred embodiment, being provided with the thread groove of indent on the inwall of polymeric layer 2 or outer wall, thread groove is provided with least
1 and it is arranged on side by side on the wall of polymeric layer, the hand of spiral of thread groove is consistent and using stator center axle as it
The hand of spiral stretches axle.
As a preferred embodiment, thread groove is disposed adjacently on the whole inwall of polymeric layer 2 or outer wall side by side.
PTFE and FEP blends disclosed by the invention applied to screw drilling tool stator, including PTFE, FEP and addition
Agent, additive include reinforcing fiber and metal dust, and each component composition is (in terms of parts by weight)：PTFE and FEP blends 100
Part, additive 10-30 parts.
As a preferred embodiment, PTFE accounts for 70-90% in PTFE and FEP blends, FEP accounts for 10-30%.
As a preferred embodiment, reinforcing fiber and the weight of metal dust ratio are (1.5-2.5)： 1.
As a preferred embodiment, reinforcing fiber is carbon fiber, glass fibre, boron fibre, aramid fiber, polyester fiber, nylon
One or more in fiber, polyimide fiber.
As a preferred embodiment, a diameter of 10-20 μm of reinforcing fiber, draw ratio is (100-200)：1.
As a preferred embodiment, metal dust is the one or more in copper powder, iron powder, tungsten powder, titanium valve, aluminium powder, lead powder.
As a preferred embodiment, the particle diameter of metal dust is less than 0.3 μm.
As a preferred embodiment, reinforcing fiber first carries out surface modification using surface modifier.
As a preferred embodiment, surface modifier includes the rare-earth modifier that rare earth concentration is 0.1-0.5% and 2-5% idol
Join agent.
As a preferred embodiment, modified technique is that reinforcing fiber is inserted to the surface being configured to according to the above ratio at normal temperatures to change
1-3h is infiltrated in property agent, then dries 3-4h at 80-120 DEG C.
Embodiment 1：
The present embodiment each component (being counted with parts by weight), which forms, is：100 parts of PTFE and FEP blends, PTFE accounts for 90%,
FEP accounts for 10%；10 parts of additive, by a diameter of 15 μm, draw ratio 150：1 carbon fiber and particle diameter is less than 0.3 μm of copper powder
It is 2 by weight：1 mixes.Carbon fiber is configured to through the rare-earth modifier that rare earth concentration is 0.1% and 2% coupling agent
Surface modifier infiltrate the modification for drying 3h after 3h at 80 DEG C at normal temperatures.
During production, FEP, PTFE and additive are after high speed muller is well mixed, then smelting extruding pelletization is powder,
Then the mode such as either it is molded or molds by extruding and be molded to obtain one of which application structure as Figure 1-3.
Embodiment 2：
The present embodiment each component (being counted with parts by weight), which forms, is：100 parts of PTFE and FEP blends, PTFE accounts for 80%,
FEP accounts for 20%；10 parts of additive, by a diameter of 15 μm, draw ratio 150：1 glass fibre and particle diameter is less than 0.3 μm of copper
Powder and iron powder are 2 by weight：1 mixes.Glass fibre is through the rare-earth modifier that rare earth concentration is 0.2% and 3% idol
The surface modifier that is configured to of connection agent infiltrates the modification for drying 4h after 2h at 90 DEG C at normal temperatures.
During production, FEP, PTFE and additive are after high speed muller is well mixed, then smelting extruding pelletization is powder,
Then the mode such as either it is molded or molds by extruding and be molded to obtain one of which application structure as Figure 1-3.
Embodiment 3：
The present embodiment each component (being counted with parts by weight), which forms, is：100 parts of PTFE and FEP blends, PTFE accounts for 75%,
FEP accounts for 25%；10 parts of additive, by a diameter of 15 μm, draw ratio 150：1 boron fibre and particle diameter is less than 0.3 μm of copper powder
It is 2 by weight with tungsten powder：1 mixes.Boron fibre through rare earth concentration be 0.3% rare-earth modifier and 4% coupling agent
The surface modifier being configured to infiltrates the modification for drying 4h after 2h at 100 DEG C at normal temperatures.
During production, FEP, PTFE and additive are after high speed muller is well mixed, then smelting extruding pelletization is powder,
Then the mode such as either it is molded or molds by extruding and be molded to obtain one of which application structure as Figure 1-3.
Embodiment 4：
The present embodiment each component (being counted with parts by weight), which forms, is：100 parts of PTFE and FEP blends, PTFE accounts for 70%,
FEP accounts for 30%；10 parts of additive, by a diameter of 15 μm, draw ratio 150：1 aramid fiber and particle diameter is less than 0.3 μm of copper
Powder, iron powder and lead powder are 2 by weight：1 mixes.Aramid fiber through rare earth concentration be 0.5% rare-earth modifier and
The surface modifier that 5% coupling agent is configured to infiltrates the modification for drying 3h after 1h at 120 DEG C at normal temperatures.
During production, FEP, PTFE and additive are after high speed muller is well mixed, then smelting extruding pelletization is powder,
Then the mode such as either it is molded or molds by extruding and be molded to obtain one of which application structure as Figure 1-3.
Comparative example：
Common stator in the prior art, stator material HNBR.
Product in 1-4 of the embodiment of the present invention and comparative example is subjected to performance test, test result is as shown in table 1.
Table 1：The properties of product test result of the embodiment of the present invention and comparative example
As known from Table 1, performance is better than comparative example to product produced by the present invention in every respect.
The embodiment 5-8 and embodiment 1-4 reinforcing fiber differed only in reinforcer is polyester fiber.
The embodiment 9-12 and embodiment 1-4 reinforcing fiber differed only in reinforcer is nylon fiber.
The embodiment 13-16 and embodiment 1-4 reinforcing fiber differed only in reinforcer is polyimide fiber.
The embodiment 17-20 and embodiment 1-4 metal dust differed only in reinforcer is titanium valve.
The embodiment 21-24 and embodiment 1-4 metal dust differed only in reinforcer is by tungsten powder and titanium valve group
Into.
The embodiment 25-28 and embodiment 1-4 metal dust differed only in reinforcer is by copper powder and aluminium powder group
Into.
The embodiment 29-32 and embodiment 1-4 metal dust differed only in reinforcer is by copper powder, iron powder, tungsten
Powder and lead powder composition.
The embodiment 33-36 and embodiment 1-4 metal dust differed only in reinforcer is by copper powder, iron powder, tungsten
Powder, titanium valve and aluminium powder composition.
The embodiment 37-40 and embodiment 1-4 metal dust differed only in reinforcer is by copper powder, iron powder, tungsten
Powder, titanium valve, aluminium powder and lead powder composition.
A diameter of 10 μm of the embodiment 41-44 and embodiment 1-4 reinforcing fiber differed only in reinforcer, it is long
Footpath ratio is 100：1.
A diameter of 10 μm of the embodiment 45-48 and embodiment 1-4 reinforcing fiber differed only in reinforcer, it is long
Footpath ratio is 150：1.
A diameter of 10 μm of the embodiment 49-52 and embodiment 1-4 reinforcing fiber differed only in reinforcer, it is long
Footpath ratio is 200：1.
Embodiment 53-56 and embodiment 1-4's differs only in reinforcing fiber reinforcing fiber and metal dust in additive
Weight ratio be 1.5：1.
Embodiment 57-60 and embodiment 1-4's differs only in reinforcing fiber reinforcing fiber and metal dust in additive
Weight ratio be 1.8：1.
Embodiment 61-64 and embodiment 1-4's differs only in reinforcing fiber reinforcing fiber and metal dust in additive
Weight ratio be 2.5：1.
In view of the present invention program embodiment is numerous, each embodiment experimental data is huge numerous, is not suitable for arranging one by one herein
Act explanation, but the content of checking required for each embodiment approaches with obtained final conclusion, so herein not to each reality
The checking content for applying example is illustrated one by one, only illustrates the excellent part of the present patent application using embodiment 1-4 as representative.
, equally all will in the present invention in place of this place embodiment is to the claimed non-limit of technical scope midrange
In the range of asking protection.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be substituted using similar mode, but simultaneously
Do not deviate by the spirit of the present invention or surmount scope defined in appended claims.
It is skilled to this area although having been made a detailed description to the present invention and being cited some specific embodiments
For technical staff, as long as it is obvious that can make various changes or correct without departing from the spirit and scope of the present invention.
Claims (3)
1. a kind of screw drilling tool stator made using PTFE and FEP blends, it is mainly outside stator metal successively from outside to inside
Pipe, polymeric layer, it is characterised in that the polymeric layer is made using PTFE and FEP blends；
PTFE the and FEP blends include PTFE, FEP and additive, and each component is in parts by weight：PTFE and
100 parts of FEP blends, additive 10-30 parts；
Wherein, PTFE accounts for 70-90% in PTFE the and FEP blends, and FEP accounts for 10-30%；
The additive include a diameter of 10-20 μm, draw ratio be (100-200)：1 reinforcing fiber and particle diameter is less than 0.3 μm
Metal dust, the weight ratio of reinforcing fiber and metal dust is (1.5-2.5)：1, the reinforcing fiber inserts table at normal temperatures
1-3h is infiltrated in the modifying agent of face, 3-4h is then dried at 80-120 DEG C carries out surface modification, and the surface modifier includes rare earth
Concentration is 0.1-0.5% rare-earth modifier and 2-5% coupling agent；
The reinforcing fiber is carbon fiber, glass fibre, boron fibre, aramid fiber, polyester fiber, nylon fiber, polyimides
One or more in fiber；
The metal dust is the one or more in copper powder, iron powder, tungsten powder, titanium valve, aluminium powder, lead powder.
2. the screw drilling tool stator according to claim 1 made using PTFE and FEP blends, it is characterised in that institute
The thread groove that indent is provided with polymeric layer inwall or outer wall is stated, the thread groove is provided with least 1 and set side by side
Put on the wall of polymeric layer, the hand of spiral of the thread groove is consistent and is stretched by its hand of spiral of stator center axle
Axle.
3. the screw drilling tool stator according to claim 2 made using PTFE and FEP blends, it is characterised in that institute
Thread groove is stated to be disposed adjacently side by side on whole polymeric layer inwall or outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410712265.4A CN104712494B (en) | 2014-11-28 | 2014-11-28 | A kind of screw drilling tool stator made using PTFE and FEP blends and the fluorine material applied to the stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410712265.4A CN104712494B (en) | 2014-11-28 | 2014-11-28 | A kind of screw drilling tool stator made using PTFE and FEP blends and the fluorine material applied to the stator |
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| Publication Number | Publication Date |
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| CN104712494A CN104712494A (en) | 2015-06-17 |
| CN104712494B true CN104712494B (en) | 2017-12-26 |
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| CN201410712265.4A Active CN104712494B (en) | 2014-11-28 | 2014-11-28 | A kind of screw drilling tool stator made using PTFE and FEP blends and the fluorine material applied to the stator |
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| CN107524680A (en) * | 2017-10-19 | 2017-12-29 | 苏州华丰不锈钢紧固件有限公司 | Hex(agonal)screw simple in construction |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202441593U (en) * | 2012-02-27 | 2012-09-19 | 王江 | Underground screw pump special for oil field |
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| CN1421613A (en) * | 2002-12-22 | 2003-06-04 | 崔乃林 | Screw pump made of polymer material and ceramic and its manufacture |
| CN101440693B (en) * | 2008-12-15 | 2013-06-05 | 江苏长城石油装备制造有限公司 | High temperature deep well screw drilling tool |
| CN202746204U (en) * | 2012-09-13 | 2013-02-20 | 王立华 | High-abrasion-resistance stator of screw pump |
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| CN202441593U (en) * | 2012-02-27 | 2012-09-19 | 王江 | Underground screw pump special for oil field |
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