CN106438338A - Fluid end of reciprocating pump - Google Patents
Fluid end of reciprocating pump Download PDFInfo
- Publication number
- CN106438338A CN106438338A CN201610791889.9A CN201610791889A CN106438338A CN 106438338 A CN106438338 A CN 106438338A CN 201610791889 A CN201610791889 A CN 201610791889A CN 106438338 A CN106438338 A CN 106438338A
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- Prior art keywords
- pump housing
- reciprocating pump
- particle diameter
- valve assembly
- valve
- Prior art date
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- 239000012530 fluid Substances 0.000 title abstract 8
- 238000004663 powder metallurgy Methods 0.000 claims abstract description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 65
- 239000002245 particle Substances 0.000 claims description 53
- 229910052802 copper Inorganic materials 0.000 claims description 40
- 239000010949 copper Substances 0.000 claims description 40
- 239000003795 chemical substances by application Substances 0.000 claims description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 33
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 19
- 238000001764 infiltration Methods 0.000 claims description 18
- 230000008595 infiltration Effects 0.000 claims description 18
- 239000000314 lubricant Substances 0.000 claims description 13
- 238000005245 sintering Methods 0.000 claims description 12
- 229910052796 boron Inorganic materials 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 9
- 238000009826 distribution Methods 0.000 claims description 8
- 229910052748 manganese Inorganic materials 0.000 claims description 8
- 229910052725 zinc Inorganic materials 0.000 claims description 8
- 238000007493 shaping process Methods 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 230000005484 gravity Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000003754 machining Methods 0.000 abstract 1
- 239000011159 matrix material Substances 0.000 description 33
- 230000000052 comparative effect Effects 0.000 description 19
- 229920000049 Carbon (fiber) Polymers 0.000 description 11
- 239000004917 carbon fiber Substances 0.000 description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 11
- 238000009413 insulation Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 150000004767 nitrides Chemical class 0.000 description 5
- 239000007791 liquid phase Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- -1 but Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000003978 infusion fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000289 melt material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1035—Liquid phase sintering
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/14—Making alloys containing metallic or non-metallic fibres or filaments by powder metallurgy, i.e. by processing mixtures of metal powder and fibres or filaments
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/02—Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
- C22C49/08—Iron group metals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention provides a fluid end of a reciprocating pump, and belongs to the technical field of reciprocating pumps. The fluid end solves the problem that a valve body assembly of an existing fluid end of a reciprocating pump presses a pump body. The fluid end of the reciprocating pump comprises a pump body, a suction valve assembly, a discharge valve assembly, a valve deck, a suction valve plug and a discharge valve plug. The fluid end of the reciprocating pump is vertically mounted in the reciprocating pump, and a valve body cannot be pressed by the self gravity of the suction valve assembly and the discharge valve assembly; and during work, within the permissible range, working pressure is increased, a valve body assembly can be flexibly opened and closed, overall heat treatment can be achieved through multiple times of grinding, and the safe and efficient working principle is achieved. In addition, the pump body of the fluid end of the reciprocating pump is made through powder metallurgy, and the fluid end is low in cost, efficient in machining, high in density and good in comprehensive performance.
Description
Technical field
The invention belongs to reciprocal pump technical field, it is related to a kind of reciprocating pump hydraulic-end.
Background technology
Reciprocating pump hydraulic-end is the part of most critical in reciprocating pump, is also the most part of consumable accessory, and its structure is direct
Decide the performance of reciprocating pump, affect the convenient and safe property of working service.In the prior art, reciprocating pump hydraulic-end exist with
Lower shortcoming：General reciprocating pump hydraulic-end is horizontally installed in reciprocating pump so that sucking valve assembly, discharging valve assembly and sealing
Assembly sinks under Gravitative Loads naturally, improves the internal pressure to reciprocating pump hydraulic-end, suction valve assembly, dump valve can be made total
Valve body produces and oppresses and make valve body to ftracture in pairs.
In sum, for solving the deficiency in existing reciprocating pump hydraulic-end structure, need to design that a kind of structure is simple, design
Rationally and can reduce the reciprocating pump hydraulic-end that valve body is oppressed.
Content of the invention
The purpose of the present invention is that there are the problems referred to above for existing technology it is proposed that a kind of structure is simple, reasonable in design
And the reciprocating pump hydraulic-end to valve body compressing can be reduced.
The purpose of the present invention can be realized by following technical proposal：A kind of reciprocating pump hydraulic-end, including, the described pump housing,
Suck valve assembly, discharge valve assembly, valve gap, suck valve plug, discharge valve plug；The described pump housing by suck the pump housing with discharge pump housing structure
Become, described suction pump housing lower end is installed and sucked valve plug, can be inserted into and suck valve assembly and suck on valve assembly in described suction valve plug
Suction valve plug is blocked at end, is provided with crosshead in described suction pump housing passage, is provided with bullet between described crosshead and suction valve assembly
Spring；Described discharge pump housing lower end is installed and is discharged valve plug, can be inserted into and discharge valve assembly and discharge on valve assembly in described discharge valve plug
Discharge valve plug is blocked at end, and valve gap is installed in described discharge pump housing upper end, described valve gap lower end be in step-like and with discharge valve assembly it
Between be provided with spring；
Wherein, the described pump housing is the powder metallurgy pump housing.
In a kind of above-mentioned reciprocating pump hydraulic-end, described suction valve assembly upper end and discharge valve assembly upper end are equipped with
Movable block；Described crosshead lower end is downwardly extending step-like projection, in described projection insertion spring.
In a kind of above-mentioned reciprocating pump hydraulic-end, described inlet valve body side surface is provided with patchhole and sucks valve body and discharge
It is provided with friction plate between valve plug；Described exits valve body side is provided between steam vent and exits valve body and valve gap and is provided with pad.
In a kind of above-mentioned reciprocating pump hydraulic-end, the preparation technology of the described powder metallurgy pump housing mainly includes raw material and mixes
Close, be molded and sinter；Wherein, raw material is mainly grouped into by the one-tenth of following mass percent：Graphite powder：0.5-0.85%, copper powder：
2.7-4.4%, fiber：5-15%, iron powder：Surplus.
In a kind of above-mentioned reciprocating pump hydraulic-end, in described raw material, the particle diameter of iron powder is 100-150 μm, copper powder and graphite
The particle diameter of powder is less than 100 μm.
Preferably, described fiber is one or more of carbon fiber, glass fibre, boron fibre, silicon carbide fibre.
In a kind of above-mentioned reciprocating pump hydraulic-end, while described sintering, carry out infiltration process, the infiltration that infiltration uses
Agent is copper seeping agent.
In a kind of above-mentioned reciprocating pump hydraulic-end, described copper seeping agent is become to be grouped into by following mass percent：Iron powder：
1.9-2.2%, Mn：1.1-1.8%, B：1.5-2%, Zn：2.1-2.3%, lubricant L T.LT.LT 0.5%, copper powder：Surplus.
In a kind of above-mentioned reciprocating pump hydraulic-end, the particle diameter distribution of described copper seeping agent is：Particle diameter≤30 μm：10-20%,
30 ＜ particle diameter≤50 μm：40-50%, 50 ＜ particle diameter≤80 μm：80 μm of 30-40%, particle diameter ＞：1-10%.
In a kind of above-mentioned reciprocating pump hydraulic-end, the temperature of described sintering and infiltration is 1100-1150 DEG C, and temperature retention time is
20-30min.
The pump housing of the present invention is made up of powder metallurgical technique, and low cost, processing efficiently, can be with industrialized production.But, conventional
Powder metallurgical technique can not possibly reach complete densifie state in pressing process, and density is relatively low, and in the pump housing, the hole of residual makes pump
The mechanical properties such as the fracture toughness of body, tensile strength, hardness particularly dynamic mechanical (impact flexibility, fatigue strength) is far low
It is grouped into identical melt material in one-tenth.Therefore, in order to improve the performance of the pump housing, the present invention is melted in sintering process simultaneously
Ooze process, eliminate the residual porosity of the pump housing.Additionally, the present invention also with the addition of fibrous material in the feed, carry as strengthening constituent element
The intensity of high matrix, thus obtain high-compactness, the high performance pump housing.
It is that the preforming pressed compact making infiltrant is placed in raw material mixing that the present invention carry out infiltration while sintering to process
Afterwards in compressing matrix skeleton, when heating-up temperature exceedes the fusing point of infiltrant, infiltrant formed liquid phase, infiltrant with
In the presence of capillary force between matrix skeleton particle, the hole that liquid phase is penetrated into and filling connects, thus obtain high-compactness, Gao Xing
The pump housing of energy.
Iron powder in the raw material of the powder metallurgy pump housing of the present invention is preferably water-atomized iron powder, and copper powder is preferably electrolytic copper powder,
Graphite powder is preferably flaky graphite powder, and the compressibility of raw material is good, and the matrix skeleton tendency formation after blended, shaping is suppressed is many
The hole interconnecting or channel system, few no airtight hole.And, during the copper in matrix skeleton is also used as oozing copper
Inducing metal, so that the copper seeping agent of liquid phase can be penetrated into more preferably, faster and filling connection hole, thus obtaining high densification
Degree, the high performance pump housing.
The infiltrant of the present invention is a kind of copper seeping agent, but, copper seeping agent and matrix skeleton will be corroded due to after fine copper fusing
The contact surface of metal and form groove mark and affect product surface quality.Therefore, in order to prevent from corroding, the copper seeping agent of the present invention is
One Albatra metal, adding appropriate iron powder in copper powder makes it with copper alloy so that the iron in copper seeping agent first with copper
Dissolve each other to reach and be substantially saturated, then penetrated in matrix hole with the aluminium alloy of melting, make matrix surface both corrosion-free and noresidue.But
It is that, if the content control of iron powder is improper, during less than above range, noresidue corrosion but in matrix surface, and is higher than above-mentioned
During scope, although matrix surface is corrosion-free, and residual occurs, so the control of the addition of iron powder is also extremely important.
In addition, the present invention also with the addition of micro- Mn, B, Zn and lubricant in copper seeping agent, corrosion both can be improved existing
As and wettability, the performance of rack body can be improved again.Wherein, micro- Mn can also reduce liquid phase with copper alloy
Surface tension, removes the residue after oozing copper, reduces and corrodes, can also improve mechanical property；B can play raising density, intensity
Effect with toughness；Zn can play reduction copper seeping agent melt viscosity, increases its active effect.
The present invention has further defined the particle diameter of matrix skeleton powder stock and copper seeping agent, and the average grain diameter of copper seeping agent is little
In the particle diameter of matrix skeleton powder stock, and it is evenly distributed, therefore, copper seeping agent can penetrate into and filling matrix more preferably, faster
The hole of connection in skeleton, final consistency is more preferable, the higher pump housing of performance.
Compared with prior art, the invention has the advantages that：
Reciprocating pump hydraulic-end according to the present invention, it is vertically installed in reciprocating pump, can make suction valve assembly and dump valve
The self gravitation of assembly will not be oppressed to valve body, during work, in allowed band, increase operating pressure, valve component can be made to open
Close flexibly, bulk heat treatmet can repeatedly be ground, and realizes safe and efficient operation principle.Additionally, reciprocating pump hydraulic-end of the present invention
The pump housing be made up of powder metallurgy, efficiently, and consistency is high, good combination property for low cost, processing.
Brief description
Fig. 1 is the structural representation of a preferred embodiment of the present invention.
Fig. 2 is the sectional view at A-A in Fig. 1.
Fig. 3 is the structure decomposition figure of the present invention.
Specific embodiment
The following is the specific embodiment of the present invention and combine accompanying drawing, technical scheme is further described,
But the present invention is not limited to these embodiments.
As shown in Figure 1-Figure 3, a kind of reciprocating pump hydraulic-end of the present invention includes the pump housing 510, sucks valve assembly 520, dump valve
Assembly 530, valve gap 540, suction valve plug 550, discharge valve plug 560；The pump housing 510 is by the suction pump housing 511 and the discharge pump housing 512 structure
One-tenth, the suction pump housing 511 lower end is installed and is sucked valve plug 550, can be inserted into suction valve assembly 520 and inlet valve is total in suction valve plug 550
Become 520 upper ends to block suction valve plug 550, in the suction pump housing 511 passage, be provided with crosshead 513, crosshead 513 and suction valve assembly
It is provided with spring 514 between 520；Discharge the pump housing 512 lower end and discharge valve plug 560 is installed, discharge pluggable dump valve in valve plug 560 total
Become 530 and discharge valve plug 560 is blocked in discharge valve assembly 530 upper end, valve gap 540, valve gap are installed in the described discharge pump housing 512 upper end
540 lower ends are in step-like and are provided with spring 514 and discharge valve assembly 530 between.
Further, suck valve assembly 520 upper end and discharge valve assembly 530 upper end and be equipped with movable block 570；Crosshead
513 lower ends are downwardly extending step-like projection 513a, in this projection 513a insertion spring 514；This structure, it is to avoid inlet valve
Assembly and discharge valve assembly 530, during moving up and down, depart from and suck valve plug 550 and discharge valve plug 560, realize reciprocal pump liquid
The trouble free service at power end.
Further, inlet valve body side surface is provided with patchhole 511a and sets between suction valve body 511 and discharge valve plug 560
There is friction plate 580；The described discharge pump housing 512 side is provided with steam vent 512a and is provided with pad between exits valve body and valve gap 540
590；The setting of friction plate 580 and pad 590 can reduce the friction between valve component, extend reciprocating pump hydraulic-end and use year
Limit.
During work, reciprocating pump hydraulic-end lower end infusion fluid, suction valve assembly 520 can be made to move up, so can make liquid
Body extruding patchhole 511a and discharge valve assembly 530, if sucking the pump housing 511 to be in sealing state, suck the liquid in the pump housing
Valve assembly 530 is discharged in extruding, and when reaching certain pressure value, discharging the pump housing will move up, and liquid will flow in excavationg pump body
And liquid is discharged by steam vent 512a；The input of stop liquid, input valve assembly and discharge valve assembly 530 are through spring 514
Reset to original position, so, the safe and efficient operation principle of reciprocating pump hydraulic-end can be effectively realized.
The pump housing 510 of the present invention is the powder metallurgy pump housing, the following is its part preparation embodiment.
Embodiment 1：
Water-atomized iron powder with particle diameter for 100-150 μm, particle diameter be less than 100 μm of electrolytic copper powder and flaky graphite powder with
And continuous long carbon fiber blended, shaping make matrix skeleton.Wherein, in matrix skeleton, the mass percent of copper powder is 2.7%,
The mass percent of graphite powder is 0.5%, and the mass percent of continuous long carbon fiber is 5%, balance of iron powder.
By iron powder：1.9%, Mn：1.1%, B：1.5%, Zn：2.1%, lubricant：0.3%, the quality hundred of surplus copper powder
Ratio is divided to be configured to the preforming pressed compact of copper seeping agent, the particle diameter distribution of copper seeping agent is：Particle diameter≤30 μm：10%, 30 ＜ particle diameter≤50 μm：
50%, 50 ＜ particle diameter≤80 μm：80 μm of 30%, particle diameter ＞：10%.
Then remove oxide and the nitride film on matrix skeleton surface, preforming for copper seeping agent pressed compact is placed in matrix skeleton
Top, is placed in stove and is sintered and infiltration simultaneously.Concrete technology is：In 750 DEG C of insulation 15min with burn off lubricant, 1020
DEG C insulation 15min is dissolving graphite powder, then in 1130 DEG C of sintering and infiltration 20min, makes the final pump housing.
Embodiment 2：
Water-atomized iron powder with particle diameter for 100-150 μm, particle diameter be less than 100 μm of electrolytic copper powder and flaky graphite powder with
And continuous long carbon fiber blended, shaping make matrix skeleton.Wherein, in matrix skeleton, the mass percent of copper powder is 3%, stone
The mass percent of ink powder is 0.62%, and the mass percent of continuous long carbon fiber is 8%, balance of iron powder.
By iron powder：2.0%, Mn：1.3%, B：1.7%, Zn：2.15%, lubricant：0.2%, the quality hundred of surplus copper powder
Ratio is divided to be configured to the preforming pressed compact of copper seeping agent, the particle diameter distribution of copper seeping agent is：Particle diameter≤30 μm：15%, 30 ＜ particle diameter≤50 μm：
40%, 50 ＜ particle diameter≤80 μm：80 μm of 35%, particle diameter ＞：10%.
Then remove oxide and the nitride film on matrix skeleton surface, preforming for copper seeping agent pressed compact is placed in matrix skeleton
Top, is placed in stove and is sintered and infiltration simultaneously.Concrete technology is：In 750 DEG C of insulation 15min with burn off lubricant, 1020
DEG C insulation 15min is dissolving graphite powder, then in 1130 DEG C of sintering and infiltration 22min, makes the final pump housing.
Embodiment 3：
Water-atomized iron powder with particle diameter for 100-150 μm, particle diameter be less than 100 μm of electrolytic copper powder and flaky graphite powder with
And continuous long carbon fiber blended, shaping make matrix skeleton.Wherein, in matrix skeleton, the mass percent of copper powder is 3.5%,
The mass percent of graphite powder is 0.72%, and the mass percent of continuous long carbon fiber is 10%, balance of iron powder.
By iron powder：2.05%, Mn：1.5%, B：1.8%, Zn：2.2%, lubricant：0.35%, the quality of surplus copper powder
Percentage is configured to the preforming pressed compact of copper seeping agent, and the particle diameter distribution of copper seeping agent is：Particle diameter≤30 μm：15%, 30 ＜ particle diameter≤50 μ
m：45%, 50 ＜ particle diameter≤80 μm：80 μm of 35%, particle diameter ＞：5%.
Then remove oxide and the nitride film on matrix skeleton surface, preforming for copper seeping agent pressed compact is placed in matrix skeleton
Top, is placed in stove and is sintered and infiltration simultaneously.Concrete technology is：In 750 DEG C of insulation 15min with burn off lubricant, 1020
DEG C insulation 15min is dissolving graphite powder, then in 1130 DEG C of sintering and infiltration 25min, makes the final pump housing.
Embodiment 4：
Water-atomized iron powder with particle diameter for 100-150 μm, particle diameter be less than 100 μm of electrolytic copper powder and flaky graphite powder with
And continuous long carbon fiber blended, shaping make matrix skeleton.Wherein, in matrix skeleton, the mass percent of copper powder is 4%, stone
The mass percent of ink powder is 0.80%, and the mass percent of continuous long carbon fiber is 12%, balance of iron powder.
By iron powder：2.1%, Mn：1.7%, B：1.85%, Zn：2.23%, lubricant：0.4%, the quality of surplus copper powder
Percentage is configured to the preforming pressed compact of copper seeping agent, and the particle diameter distribution of copper seeping agent is：Particle diameter≤30 μm：20%, 30 ＜ particle diameter≤50 μ
m：45%, 50 ＜ particle diameter≤80 μm：80 μm of 30%, particle diameter ＞：5%.
Then remove oxide and the nitride film on matrix skeleton surface, preforming for copper seeping agent pressed compact is placed in matrix skeleton
Top, is placed in stove and is sintered and infiltration simultaneously.Concrete technology is：In 750 DEG C of insulation 15min with burn off lubricant, 1020
DEG C insulation 15min is dissolving graphite powder, then in 1130 DEG C of sintering and infiltration 28min, makes the final pump housing.
Embodiment 5：
Water-atomized iron powder with particle diameter for 100-150 μm, particle diameter be less than 100 μm of electrolytic copper powder and flaky graphite powder with
And continuous long carbon fiber blended, shaping make matrix skeleton.Wherein, in matrix skeleton, the mass percent of copper powder is 4.4%,
The mass percent of graphite powder is 0.85%, and the mass percent of continuous long carbon fiber is 15%, balance of iron powder.
By iron powder：2.2%, Mn：1.8%, B：2%, Zn：2.3%, lubricant：0.3%, the percent mass of surplus copper powder
Than being configured to the preforming pressed compact of copper seeping agent, the particle diameter distribution of copper seeping agent is：Particle diameter≤30 μm：14%, 30 ＜ particle diameter≤50 μm：
45%, 50 ＜ particle diameter≤80 μm：80 μm of 40%, particle diameter ＞：1%.
Then remove oxide and the nitride film on matrix skeleton surface, preforming for copper seeping agent pressed compact is placed in matrix skeleton
Top, is placed in stove and is sintered and infiltration simultaneously.Concrete technology is：In 750 DEG C of insulation 15min with burn off lubricant, 1020
DEG C insulation 15min is dissolving graphite powder, then in 1130 DEG C of sintering and infiltration 30min, makes the final pump housing.
Comparative example 1：
Comparative example 1 is differed only in embodiment 3, and the comparative example 1 powder metallurgy pump housing is not processed through infiltration.
Comparative example 2：
Comparative example 2 is differed only in embodiment 3, and the copper seeping agent of comparative example 2 is pure copper powder.
Comparative example 3：
Comparative example 3 is differed only in embodiment 3, and in the copper seeping agent of comparative example 3, iron content is 1.8%.
Comparative example 4：
Comparative example 4 is differed only in embodiment 3, and in the copper seeping agent of comparative example 4, iron content is 2.3%.
Comparative example 5：
Comparative example 5 is differed only in embodiment 3, not fibre in the powder metallurgy pump housing of comparative example 5.
Comparative example 6：
Comparative example 6 is differed only in embodiment 3, the grain of the particle diameter distribution of the copper seeping agent of comparative example 6 and raw material iron powder
Footpath scope is identical.
The powder metallurgy pump housing that embodiment of the present invention 1-5 and comparative example 1-6 are made carries out performance test, and test result is such as
Shown in table 1.
Table 1：
As known from Table 1, the compactness of the powder metallurgy pump housing of the embodiment of the present invention and combination property are relatively excellent.
In above-described embodiment and its alternative, fiber can also be continuous long glass fiber, continuously long boron fibre, company
Continue long silicon carbide fibre.
In above-described embodiment and its alternative, the temperature of sintering can also for 1110 DEG C, 1115 DEG C, 1120 DEG C,
1125℃、1135℃、1140℃、1145℃、1150℃.
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
Lift explanation, but required for each embodiment, the content of checking is all close with the final conclusion obtaining.The pump being obtained using the present invention
The density of body is all higher than 7.1g/cm3, hardness HRB is all higher than 90, and tensile strength is all higher than 720MPa, and impact flexibility is all higher than
14J/cm2.So do not illustrated one by one to the checking content of each embodiment herein, only said using embodiment 1-5 as representative
The excellent part of bright the present patent application.
Specific embodiment described herein is only explanation for example to present invention spirit.The affiliated technology of the present invention is led
The technical staff in domain can be made various modifications or supplement or replaced using similar mode to described specific embodiment
Generation, but the spirit without departing from the present invention or surmount scope defined in appended claims.
Claims (9)
1. a kind of reciprocating pump hydraulic-end is it is characterised in that including the pump housing, sucking valve assembly, discharge valve assembly, valve gap, inlet valve
Plug, discharge valve plug；The described pump housing is constituted with the discharge pump housing by sucking the pump housing, and described suction pump housing lower end is installed and sucked valve plug, institute
State to can be inserted in suction valve plug to suck valve assembly and suck valve assembly upper end and block suction valve plug, set in described suction pump housing passage
There is crosshead, between described crosshead and suction valve assembly, be provided with spring；Described discharge pump housing lower end is installed and is discharged valve plug, described
Discharge to can be inserted in valve plug to discharge valve assembly and discharge valve assembly upper end and block discharge valve plug, valve is installed in described discharge pump housing upper end
Lid, described valve gap lower end is in step-like and is provided with spring and discharge valve assembly between；
Wherein, the described pump housing is the powder metallurgy pump housing.
2. a kind of reciprocating pump hydraulic-end according to claim 1 is it is characterised in that described suction valve assembly upper end and row
Go out valve assembly upper end and be equipped with movable block；Described crosshead lower end is downwardly extending step-like projection, described projection insertion
In spring.
3. a kind of reciprocating pump hydraulic-end according to claim 1 is it is characterised in that described inlet valve body side surface is provided with insertion
It is provided with friction plate between hole and suction valve body and discharge valve plug；Described exits valve body side is provided with steam vent and exits valve body and valve
It is provided with pad between lid.
4. a kind of reciprocating pump hydraulic-end according to claim 1 is it is characterised in that the preparation work of the described powder metallurgy pump housing
Skill mainly includes raw material mixing, shaping and sinters；Wherein, raw material is mainly grouped into by the one-tenth of following mass percent：Graphite powder：
0.5-0.85%, copper powder：2.7-4.4%, fiber：5-15%, iron powder：Surplus.
5. a kind of reciprocating pump hydraulic-end according to claim 4 it is characterised in that in described raw material the particle diameter of iron powder be
100-150 μm, the particle diameter of copper powder and graphite powder is less than 100 μm.
6. a kind of reciprocating pump hydraulic-end according to claim 4 is it is characterised in that carry out at infiltration while described sintering
Reason, the infiltrant that infiltration uses is copper seeping agent.
7. a kind of reciprocating pump hydraulic-end according to claim 6 is it is characterised in that described copper seeping agent is by following percent mass
Ratio becomes to be grouped into：Iron powder：1.9-2.2%, Mn：1.1-1.8%, B：1.5-2%, Zn：2.1-2.3%, lubricant L T.LT.LT 0.5%,
Copper powder：Surplus.
8. a kind of reciprocating pump hydraulic-end according to claim 7 is it is characterised in that the particle diameter distribution of described copper seeping agent is：
Particle diameter≤30 μm：10-20%, 30 ＜ particle diameter≤50 μm：40-50%, 50 ＜ particle diameter≤80 μm：80 μm of 30-40%, particle diameter ＞：
1-10%.
9. a kind of reciprocating pump hydraulic-end according to claim 4 is it is characterised in that the temperature of described sintering is 1100-
1150 DEG C, temperature retention time is 20-30min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610791889.9A CN106438338A (en) | 2016-08-31 | 2016-08-31 | Fluid end of reciprocating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610791889.9A CN106438338A (en) | 2016-08-31 | 2016-08-31 | Fluid end of reciprocating pump |
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| Publication Number | Publication Date |
|---|---|
| CN106438338A true CN106438338A (en) | 2017-02-22 |
Family
ID=58164489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610791889.9A Pending CN106438338A (en) | 2016-08-31 | 2016-08-31 | Fluid end of reciprocating pump |
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| Country | Link |
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| CN (1) | CN106438338A (en) |
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| US20230366394A1 (en) * | 2020-10-09 | 2023-11-16 | Beijing Tianma Intelligent Control Technology Co., Ltd. | Emulsion plunger pump and pump head assembly thereof |
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| US20230366394A1 (en) * | 2020-10-09 | 2023-11-16 | Beijing Tianma Intelligent Control Technology Co., Ltd. | Emulsion plunger pump and pump head assembly thereof |
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Application publication date: 20170222 |