CN105525181B - A kind of capacity pump blade composite hard alloy and preparation method thereof - Google Patents
A kind of capacity pump blade composite hard alloy and preparation method thereof Download PDFInfo
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- CN105525181B CN105525181B CN201410560666.2A CN201410560666A CN105525181B CN 105525181 B CN105525181 B CN 105525181B CN 201410560666 A CN201410560666 A CN 201410560666A CN 105525181 B CN105525181 B CN 105525181B
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Abstract
A kind of capacity pump blade composite hard alloy and preparation method thereof, component is by mass percentage are as follows: titanizing tungsten powder 80 ~ 92%, the enhancing cobalt powder 5 ~ 15%, liquid rubber 0.5 ~ 5% of 200 ~ 280 mesh of fineness, remaining is inevitable trace impurity.Solve the problems, such as that blade curve form is complicated, high, the difficult machine cut machine-shaping of Cemented Carbide Hardness, with PM technique one-pass molding, the satisfactory blade of curved surface inlays coating, improves technique, saves cost.It is not wear-resisting to overcome the problems, such as that blade is washed away by air-flow and impurity.
Description
Technical field
The present invention relates to capacity pump blade production field more particularly to a kind of blades of surface recombination hard alloy.
Background technique
The capacity of the prior art pump in blade be generally common ironcasting, the pump is for conveying about 50% gas, about
When the mixed material of 50% liquid (wherein 8 ~ 10% be crude oil, 40% be water) and 1% solid silt particle, when pump discharge pressure is greater than
In the case where 0.8MPa, the high pressure gas in liquid outlet cavity is pumped, is mingled with dampening and silt particle, protrusion and separation from blade curved surface
The matching part of disk backflows to the suction inlet position of pump chamber, since the gas of folder silt particle holds very much during backflowing at a high speed
The surface of easy erosive wear blade and separator disc, and then increase gap between the two, make the volumetric efficiency decline of pump.In oil
When the conveying of field production crew is containing gas and water, crude oil, which there is high-pressure working chamber and operating on low voltage chamber using after two months
The phenomenon that gas blowby, affects the using effect of pump.Therefore, axisymmetric curved surface rotary volume-variable pump will succeed on national oilfield exploitation
Using also needing to improve.
Original technology metal blade is washed away by air-flow and sand grains, and surface is easily worn, and then is damaged on slide damper
Roller increases the gap between blade protrusion and middle separate disk, and then makes channelling between the high pressure chest of sliding vane rotary pump and low pressure chamber, pump efficiency
Rate decline, until disabling damage.
Those skilled in the art change the wear-resisting property of blade in order to be promoted, and wear surface is changed to tungsten-cobalt alloy, can be made resistance to
It grinds performance and rises 6 ~ 8 times from original tool steel T-12, but there are two disadvantages again for tungsten-cobalt alloy: first is that tungsten-cobalt alloy price is high,
Integral manufacturing blade cost is very high, therefore contemplates the surface inserting tungsten-cobalt alloy piece in blade again, can save cost in this way
80%；Second is that tungsten-cobalt alloy extreme hardness, can reach 85-92, but machine-shaping is extremely difficult, especially machine cut processing system
Make the working face of S type curved surface blade, it is very difficult, therefore contemplate again how the curved surface work of disposal molding blade tungsten-cobalt mold insert
Make face, the method compression molding of preferable method powder metallurgy is sintered tungsten-cobalt alloy empiecement.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides one kind, and blade to be effectively prevent to wear, the change improved service life
Positive displacement pump blade composite hard alloy and preparation method thereof.
Purpose to realize the present invention provides following technical scheme: a kind of capacity pump blade composite hard alloy, special
Sign is component by mass percentage are as follows: titanizing tungsten powder 80 ~ 92%, the enhancing cobalt powder 5 ~ 15%, liquid rubber of 200 ~ 280 mesh of fineness
0.5 ~ 5%, remaining is inevitable trace impurity.
Preferably, liquid rubber is butadiene acrylonitrile rubber.
Preferably, titanizing tungsten powder is 92%, fineness is 210 ~ 220 mesh.
Preferably, enhancing cobalt powder is 7%.
Preferably, liquid rubber 1%.
Purpose to realize the present invention provides a kind of capacity pump blade composite hard alloy production method, including following
Step: a. opens the metal die of compression moulding processed;B. the titanizing tungsten powder 80 ~ 96% of 200 ~ 280 mesh of fineness, enhancing cobalt powder 5 ~
15%, liquid rubber 0.5 ~ 5%, remaining is inevitable trace impurity, is stirred well with blender, then is packed into gold by required weight
Belong to mold, is press-formed on press machine, briquetting pressure is in 10 ~ 20m2It between/Kg, then demoulds, the alloy green body after demoulding,
Shifting is put into made of graphite and on blade green body similar shape supporting mass, to prevent from deforming;C. firing is placed on alloy green body and base
The graphite of body similar shape is held on body, is put into vacuum drying oven, specific firing temperature process curve be room temperature to 600 DEG C be a cycle, about 3
A hour, then 100 DEG C every liter of period is 2 hours, when temperature reaches 1450 ~ 1480 DEG C, constant temperature 5 hours or so, then
It is gradually cooled to room temperature, is controlled between 20 ~ 30 hours cooling time；D. alloy green body sanding and polishing, firing furnace is down to 60 ~
When 80 DEG C of temperature, the product being burnt into can be taken out from vacuum drying oven, and collects graphite support tool, in case firing makes repeatedly later
With；E. the alloy blank being burnt into, by polishing, weld bolt can couple installation with the matrix of blade, then with grinding machine to hard
The outer circle and inner circle of alloy carry out grinding, to reach the requirement of installation;F. to the requirement of hard alloy be it is indeformable, without gas
Hole, flawless, hardness is between 80 ~ 90 °, preferably between 86 ~ 88 °.
Preferably, metal die includes upper die and lower die, the die sleeve being placed on upper and lower mould and is set in upper and lower mould
The plug of the heart, the upper and lower mould interface offer rotating sheet type chamber.
Beneficial effects of the present invention: it solves high, the difficult machine cut of blade curve form complexity, Cemented Carbide Hardness and is processed into
The problem of type, with PM technique one-pass molding, the satisfactory blade of curved surface inlays coating, improves technique, saves cost.Gram
It takes blade and is washed away not wear-resisting problem by air-flow and impurity.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of metal die.
Specific embodiment
Embodiment 1: a kind of capacity pump blade composite hard alloy, component is by mass percentage are as follows: fineness 200 ~ 280
Purpose titanizing tungsten powder 80%, enhancing cobalt powder 15%, butadiene acrylonitrile rubber 5%, remaining is inevitable trace impurity.
Embodiment 2: a kind of capacity pump blade composite hard alloy, component is by mass percentage are as follows: fineness 200 ~ 280
Purpose titanizing tungsten powder 92%, enhancing cobalt powder 5%, butadiene acrylonitrile rubber 3%, remaining is inevitable trace impurity.
Embodiment 3: a kind of capacity pump blade composite hard alloy, component is by mass percentage are as follows: fineness 200 ~ 280
Purpose titanizing tungsten powder 85%, enhancing cobalt powder 14.5%, butadiene acrylonitrile rubber: 0.5%, remaining is inevitable trace impurity.
Embodiment 4: a kind of capacity pump blade composite hard alloy, component is by mass percentage are as follows: fineness 200 ~ 280
Purpose titanizing tungsten powder 92%, enhancing cobalt powder 7%, butadiene acrylonitrile rubber: 1%, remaining is inevitable trace impurity.
Embodiment 5: referring to one of embodiment 1 ~ 4, a kind of capacity pump blade composite hard alloy production method, including with
Lower step: a. opens the metal die of compression moulding processed;B. the titanizing tungsten powder 80 ~ 96% of 200 ~ 280 mesh of fineness, enhancing cobalt powder 5 ~
15%, liquid rubber 0.5 ~ 5%, remaining is inevitable trace impurity, is stirred well with blender, then is packed into gold by required weight
Belong to mold, is press-formed on press machine, briquetting pressure is in 10 ~ 20m2It between/Kg, then demoulds, the alloy green body after demoulding,
Shifting is put into made of graphite and on blade green body similar shape supporting mass, to prevent from deforming;C. firing is placed on alloy green body and base
The graphite of body similar shape is held on body, is put into vacuum drying oven, specific firing temperature process curve be room temperature to 600 DEG C be a cycle, about 3
A hour, then 100 DEG C every liter of period is 2 hours, when temperature reaches 1450 ~ 1480 DEG C, constant temperature 5 hours or so, then
It is gradually cooled to room temperature, is controlled between 20 ~ 30 hours cooling time；D. alloy green body sanding and polishing, firing furnace is down to 60 ~
When 80 DEG C of temperature, the product being burnt into can be taken out from vacuum drying oven, and collects graphite support tool, in case firing makes repeatedly later
With；E. the alloy blank being burnt into, by polishing, weld bolt can couple installation with the matrix of blade, then with grinding machine to hard
The outer circle and inner circle of alloy carry out grinding, to reach the requirement of installation;F. to the requirement of hard alloy be it is indeformable, without gas
Hole, flawless, hardness is between 80 ~ 90 °, preferably between 86 ~ 88 °.
Metal die includes upper mold 001 and lower die 002, the die sleeve 003 being placed on upper and lower mould (001,002) and is set to
The plug 004 at upper and lower mould (001,002) center, upper and lower mould (the 001,002) interface offer rotating sheet type chamber 005.
Claims (5)
1. a kind of capacity pumps blade composite hard alloy production method, comprising the following steps:
A. the metal die of compression moulding processed is opened；
B. by percentage to the quality: the titanizing tungsten powder 80 ~ 92% of 200 ~ 280 mesh of fineness, enhancing cobalt powder 5 ~ 15%, butadiene acrylonitrile rubber 0.5 ~
5%, remaining is inevitable trace impurity, is stirred well with blender, then is packed into metal die by required weight, in press machine
Upper extrusion forming, briquetting pressure is in 10 ~ 20 kg/m2Between, it then demoulds, the alloy green body after demoulding, shifting is put into graphite system
At on blade green body similar shape supporting mass, to prevent from deforming；
C. it is burnt into: the graphite of alloy green body and blade green body similar shape being held body and is put into vacuum drying oven, specific firing temperature process curve
For room temperature to 600 DEG C be a cycle, 3 hours, then 100 DEG C every liter of period is 2 hours, temperature reaches 1450 ~
At 1480 DEG C, constant temperature 5 hours, it is then gradually cooled to room temperature, is controlled between 20 ~ 30 hours cooling time；
D. alloy green body sanding and polishing, when firing furnace is down to 60 ~ 80 DEG C of temperature, the product being burnt into is taken out from vacuum drying oven,
And graphite support tool is collected, in case firing Reusability later；
E. the alloy blank being burnt into, by polishing, weld bolt can couple installation with the matrix of blade, then with grinding machine to hard
The outer circle and inner circle of matter alloy carry out grinding, to reach the requirement of installation；
It f. is indeformable, pore-free, flawless to the requirement of hard alloy, hardness is between 80 ~ 90 degree.
2. a kind of capacity according to claim 1 pumps blade composite hard alloy production method, it is characterised in that metal
Mold includes upper die and lower die, the die sleeve being placed on upper and lower mould and the plug for being set to upper and lower mould center, the upper and lower mould pair
Junction offers rotating sheet type chamber.
3. a kind of capacity according to claim 1 pumps blade composite hard alloy production method, it is characterised in that titanizing
Tungsten powder is 92%, and fineness is 210 ~ 220 mesh.
4. a kind of capacity according to claim 1 pumps blade composite hard alloy production method, it is characterised in that enhancing
Cobalt powder is 7%.
5. a kind of capacity according to claim 1 pumps blade composite hard alloy production method, it is characterised in that Ding Qing
Glue 1%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410560666.2A CN105525181B (en) | 2014-10-21 | 2014-10-21 | A kind of capacity pump blade composite hard alloy and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410560666.2A CN105525181B (en) | 2014-10-21 | 2014-10-21 | A kind of capacity pump blade composite hard alloy and preparation method thereof |
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| Publication Number | Publication Date |
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| CN105525181A CN105525181A (en) | 2016-04-27 |
| CN105525181B true CN105525181B (en) | 2018-12-11 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748305A (en) * | 2010-01-20 | 2010-06-23 | 中国科学院长春应用化学研究所 | Preparation method of tungsten carbide-aluminum hard alloy sintering body |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014188598A (en) * | 2013-03-26 | 2014-10-06 | Mitsubishi Materials Corp | Surface coated wc base super hard alloy cutting tool excellent in toughness and defect resistance |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748305A (en) * | 2010-01-20 | 2010-06-23 | 中国科学院长春应用化学研究所 | Preparation method of tungsten carbide-aluminum hard alloy sintering body |
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