CN104650512B - A kind of screw drilling tool stator made using PTFE and PFA blends and the fluorine material applied to the stator - Google Patents
A kind of screw drilling tool stator made using PTFE and PFA blends and the fluorine material applied to the stator Download PDFInfo
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- CN104650512B CN104650512B CN201410709674.9A CN201410709674A CN104650512B CN 104650512 B CN104650512 B CN 104650512B CN 201410709674 A CN201410709674 A CN 201410709674A CN 104650512 B CN104650512 B CN 104650512B
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- 239000000203 mixture Substances 0.000 title claims abstract description 52
- 238000005553 drilling Methods 0.000 title claims abstract description 34
- 239000000463 material Substances 0.000 title description 9
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 title description 4
- 229910052731 fluorine Inorganic materials 0.000 title description 4
- 239000011737 fluorine Substances 0.000 title description 4
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- 150000002910 rare earth metals Chemical class 0.000 claims description 15
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- 239000002245 particle Substances 0.000 claims description 7
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 6
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Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/02—Fluid rotary type drives
-
- 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
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention relates to it is a kind of using PTFE and PFA 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 PFA blends making.The present invention by using PTFE and PFA 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 PFA 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 using stator center axle as its hand of spiral stretch axle, the rubber bushing 201 by high-pressure injection housing 100 inwall
On, match connection 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 bushing
The part contacted with rotor, the dynamic heat build up for mutually extruding, reversing between stator and rotor.When temperature is higher and concentrates on the above for a long time
Region, then it will cause rubber bushing aging, so as to cause rubber failure.Therefore, the helicoid hydraulic motor service life one of high temperature well
As 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, add drilling well into
This.
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 PFA blends
And PTFE the and PFA blends applied to the stator, by using PTFE and PFA 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 PFA blends, it is mainly successively from outside to inside
Stator metal outer pipe, polymeric layer, polymeric layer are made using PTFE and PFA blends.In the present invention program using PTFE and
PFA blends prepare the polymeric layer of stator, fluorine material are used in screw drilling tool stator breakthroughly, so that screw rod
The performances such as drilling tool stator has more preferable high-low temperature resistant, wear-resistant, ageing-resistant, coefficient of friction is low, production operation temperature is high, abrasion
Rate is low, so as to greatly extend 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 PFA blends disclosed by the invention applied to screw drilling tool stator, including PTFE, PFA and addition
Agent, described additive include reinforcing fiber and nano inorganic powder, and each component composition is (in terms of parts by weight)：PTFE
With 100 parts of PFA blends, additive 15-30 parts.
PTFE the and PFA blends that the present invention is applied to screw drilling tool stator are made, wherein, PFA, density 2.13-
2.16g/cm3, be a kind of fluoroplastics of melt-processable, chemical property is similar to PTFE and FEP, but FEP can only 200 DEG C with
Lower use, PTFE can not be molded, and PFA long-term use of temperature is -80~260 DEG C, and also have friction relatively low in plastics
Coefficient and remarkable chemical resistance.And PTFE density is 2.1-2.3g/cm3, engineering properties is softer, and surface energy is low, tool
There are the performances such as high-low temperature resistant, corrosion-resistant, weatherability, low-friction coefficient, high lubrication.The present invention is by PTFE and PFA blends
Applied to screw drilling tool stator, so as to the deformation and loss that are effectively reduced in long-term use, improve stator to drilling well high temperature,
The tolerance of the environmental factors such as high humidity, corrosivity, so as to greatly extend the service life of stator-device, reduce helicoid hydraulic motor
And its operation and maintenance cost of stator, and improve the efficiency of production.
In addition, being also added with additive in PTFE and PFA blends of the present invention, additive is by reinforcing fiber and nano inorganic
Powder forms.Wherein, reinforcing fiber can increase substantially blend on the basis of the original processing characteristics of blend is ensured
The physical and mechanical property of matrix, while improve the performances such as the dimensional stability, heat resistance, wear resistance of blend, reduce into
This.And nano inorganic powder has good plasticity and toughness, its intensity and hardness are fine by enhancing also apparently higher than other materials
Peacekeeping nano inorganic powder compounding fills PTFE and PFA blends of the present invention, can significantly improve the intensity of blend, hardness,
The combination properties such as heat resistance.And pass through present invention research and draw, the wearability of the product of invention blend and the intensity of product
Linear, intensity is higher, and wearability is better.
As a preferred embodiment, PTFE accounts for 20-40% in PTFE and PFA blends, PFA accounts for 60-80%.
As a preferred embodiment, reinforcing fiber and the weight of nano inorganic powder ratio are (3-5) in the additive：1.Due to
Nano inorganic powder is intended only as PTFE and PFA blend auxiliary reinforcements, and group occurs when exceeding certain limit in its content
Poly- phenomenon, influences dispersion effect, causes the mechanical property of PTFE and PFA blends and friction and wear behavior the feelings declined occur
Condition, therefore, when additive of the present invention is in the range of above-mentioned weight ratio, between reinforcing fiber and metal dust produce Synergistic and make
With the final intensity of product and wearability are 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.A diameter of 8-15 μm of reinforcing fiber, draw ratio are (50-100)：
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 nano inorganic powder is Al2O3、TiO2、SiO2、AlN、Si3N4In one or more.
The particle diameter of further preferably nano inorganic ion of the invention is 40-60nm.
The present invention by using PTFE and PFA 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 260 DEG C.
It is low temperature resistant --- there is good mechanical tenacity.
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 --- coefficient of friction is low.
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 PFA blends long-term use temperature disclosed by the invention is more than 200 DEG C, and when more than 250 DEG C, still
With good practical performance, stator current phase material NBR and HNBR are significantly better than.
2. PTFE and PFA blends of the present invention have excellent wearability and creep resistance, have than PTFE smaller
Compression set, more preferable resilience.
3. the present invention carries out enhancing modification to PTFE and PFA blends using additive, make that its intensity is higher, coefficient of friction
The performances such as smaller, resilience is 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 PFA blends, it is mainly successively from outside to inside
Stator metal outer pipe 1, polymeric layer 2, polymeric layer are made using PTFE and PFA 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 PFA blends disclosed by the invention applied to screw drilling tool stator, including PTFE, PFA and addition
Agent, additive include reinforcing fiber and metal dust, and each component composition is (in terms of parts by weight)：PTFE and PFA blends 100
Part, additive 15-30 parts.
As a preferred embodiment, PTFE accounts for 20-40% in PTFE and PFA blends, PFA accounts for 60-80%.
As a preferred embodiment, reinforcing fiber and the weight of metal dust ratio are (3-5)：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 8-15 μm of reinforcing fiber, draw ratio is (50-100)：1.
As a preferred embodiment, nano inorganic powder is Al2O3、TiO2、SiO2、AlN、Si3N4In one or more.
As a preferred embodiment, the particle diameter of nano inorganic ion is 40-60nm.
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 PFA blends, PTFE accounts for 20%,
PFA accounts for 80%；15 parts of additive, by a diameter of 10 μm, draw ratio 80：1 carbon fiber and particle diameter is 40-60nm Al2O3Press
Weight ratio is 4：1 mixes.Carbon fiber is configured to through the rare-earth modifier that rare earth concentration is 0.1% and 2% coupling agent
Surface modifier infiltrates the modification for drying 3h after 3h at 80 DEG C at normal temperatures.
During production, PFA, 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 PFA blends, PTFE accounts for 30%,
PFA accounts for 70%；20 parts of additive, by a diameter of 10 μm, draw ratio 80：1 glass fibre and particle diameter is 40-60nm TiO2
It is 4 by weight：1 mixes.Glass fibre configures through the rare-earth modifier that rare earth concentration is 0.2% and 3% coupling agent
Into surface modifier infiltrate dry 4h modification after 2h at 90 DEG C at normal temperatures.
During production, PFA, 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 PFA blends, PTFE accounts for 35%,
PFA accounts for 65%；25 parts of additive, by a diameter of 10 μm, draw ratio 80：1 boron fibre and particle diameter is 40-60nm SiO2Press
Weight ratio is 4：1 mixes.Boron fibre is configured to through the rare-earth modifier that rare earth concentration is 0.3% and 4% coupling agent
Surface modifier infiltrates the modification for drying 4h after 2h at 100 DEG C at normal temperatures.
During production, PFA, 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 PFA blends, PTFE accounts for 40%,
PFA accounts for 60%；30 parts of additive, by a diameter of 10 μm, draw ratio 80：1 aramid fiber and particle diameter is 40-60nm AlN
It is 4 by weight：1 mixes.Aramid fiber configures through the rare-earth modifier that rare earth concentration is 0.5% and 5% coupling agent
Into surface modifier infiltrate dry 3h modification after 1h at 120 DEG C at normal temperatures.
During production, PFA, 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 nano inorganic powder differed only in reinforcer is nano Si3N4。
Embodiment 21-24 and embodiment 1-4's differs only in reinforcer reinforcing fiber by carbon fiber and glass fibers
Dimension is by any than forming.
Embodiment 25-28 and embodiment 1-4's differs only in reinforcer reinforcing fiber by glass fibre and aramid fiber
Fiber is by any than forming.
Embodiment 29-32 and embodiment 1-4's differs only in reinforcer nano inorganic powder by Al2O3With Si3N4
By any than forming.
Embodiment 33-36 and embodiment 1-4's differs only in reinforcer nano inorganic powder by SiO2Pressed with AlN
Any ratio composition.
Embodiment 37-40 and embodiment 1-4's differs only in reinforcer nano inorganic powder by Al2O3、SiO2With
Si3N4By any than forming.
A diameter of 8 μm of the embodiment 41-44 and embodiment 1-4 reinforcing fiber differed only in reinforcer, it is long
Footpath ratio is 50：1.
A diameter of 8 μm of the embodiment 45-48 and embodiment 1-4 reinforcing fiber differed only in reinforcer, it is long
Footpath ratio is 80：1.
A diameter of 8 μm of the embodiment 49-52 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 53-56 and embodiment 1-4 reinforcing fiber differed only in reinforcer, it is long
Footpath ratio is 50：1.
A diameter of 10 μm of the embodiment 57-60 and embodiment 1-4 reinforcing fiber differed only in reinforcer, it is long
Footpath ratio is 100：1.
A diameter of 15 μm of the embodiment 61-64 and embodiment 1-4 reinforcing fiber differed only in reinforcer, it is long
Footpath ratio is 50：1.
A diameter of 15 μm of the embodiment 65-68 and embodiment 1-4 reinforcing fiber differed only in reinforcer, it is long
Footpath ratio is 80：1.
A diameter of 15 μm of the embodiment 69-72 and embodiment 1-4 reinforcing fiber differed only in reinforcer, it is long
Footpath ratio is 100：1.
Embodiment 73-76 and embodiment 1-4's differs only in reinforcing fiber reinforcing fiber and metal dust in additive
Weight ratio be 3：1.
Embodiment 77-80 and embodiment 1-4's differs only in reinforcing fiber reinforcing fiber and metal dust in additive
Weight ratio be 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 PFA 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 PFA blends；
PTFE the and PFA blends include PTFE, PFA and additive, and each component is in parts by weight：PTFE and
100 parts of PFA blends, additive 15-30 parts；
Wherein, PTFE accounts for 20-40% in PTFE the and PFA blends, and PFA accounts for 60-80%；
The additive is (50-100) by a diameter of 8-15 μm, draw ratio：1 reinforcing fiber and particle diameter is receiving for 40-60nm
The weight ratio of rice inorganic powder composition, reinforcing fiber and nano inorganic powder is (3-5)：1；
The reinforcing fiber is inserted at normal temperatures infiltrates 1-3h in surface modifier, 3-4h is then dried at 80-120 DEG C carries out table
Face is modified, and the surface modifier includes the rare-earth modifier that rare earth concentration is 0.1-0.5% 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 nano inorganic powder is Al2O3、TiO2、SiO2、AlN、Si3N4In one or more.
2. the screw drilling tool stator according to claim 1 made using PTFE and PFA 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 PFA 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 |
|---|---|---|---|
| CN201410709674.9A CN104650512B (en) | 2014-11-28 | 2014-11-28 | A kind of screw drilling tool stator made using PTFE and PFA blends and the fluorine material applied to the stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410709674.9A CN104650512B (en) | 2014-11-28 | 2014-11-28 | A kind of screw drilling tool stator made using PTFE and PFA blends and the fluorine material applied to the stator |
Publications (2)
| Publication Number | Publication Date |
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| CN104650512A CN104650512A (en) | 2015-05-27 |
| CN104650512B true CN104650512B (en) | 2018-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410709674.9A Active CN104650512B (en) | 2014-11-28 | 2014-11-28 | A kind of screw drilling tool stator made using PTFE and PFA blends and the fluorine material applied to the stator |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107379670A (en) * | 2017-07-12 | 2017-11-24 | 明阳科技（苏州）股份有限公司 | Three layers of composite thick film self-lubricating bearing material |
| CN109373060A (en) * | 2018-12-25 | 2019-02-22 | 浙江鸿盛环保科技集团有限公司 | A kind of high intensity PFA multiple tube and preparation method thereof |
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| CN1292852A (en) * | 1998-03-07 | 2001-04-25 | 达纳公司 | Plain bearing |
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| CN202493430U (en) * | 2012-02-01 | 2012-10-17 | 河北恒盛泵业股份有限公司 | Single-screw pump stator |
| CN103502665A (en) * | 2011-04-29 | 2014-01-08 | 美国圣戈班性能塑料公司 | Maintenance-free slide bearing with FEP or PFA in the adhesive layer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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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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|---|---|---|---|---|
| US4792117A (en) * | 1987-04-09 | 1988-12-20 | Kitz Corporation | Material for valve seats |
| CN1292852A (en) * | 1998-03-07 | 2001-04-25 | 达纳公司 | Plain bearing |
| EP1686271A1 (en) * | 2005-01-27 | 2006-08-02 | Thomas Marks | Sand dowel |
| CN2906030Y (en) * | 2006-05-22 | 2007-05-30 | 天津立林钻头有限公司 | Mechanical sealing device for small-sized roller bit which is no more than 6'' |
| CN201037458Y (en) * | 2007-05-24 | 2008-03-19 | 杭州兴龙泵业有限公司 | Deep-etching-resisting screw pump |
| CN101440693A (en) * | 2008-12-15 | 2009-05-27 | 淮安市井神钻采机具有限公司 | High temperature deep well screw drilling tool |
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| CN104650512A (en) | 2015-05-27 |
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