CN107790679A - A kind of plunger pump rotor copper base-steel bi-metal composite casting method - Google Patents
A kind of plunger pump rotor copper base-steel bi-metal composite casting method Download PDFInfo
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- CN107790679A CN107790679A CN201711008249.7A CN201711008249A CN107790679A CN 107790679 A CN107790679 A CN 107790679A CN 201711008249 A CN201711008249 A CN 201711008249A CN 107790679 A CN107790679 A CN 107790679A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0081—Casting in, on, or around objects which form part of the product pretreatment of the insert, e.g. for enhancing the bonding between insert and surrounding cast metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/08—Casting in, on, or around objects which form part of the product for building-up linings or coverings, e.g. of anti-frictional metal
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
Abstract
A kind of plunger pump rotor copper base-steel bi-metal composite casting method, belong to compound casting technical field, including steel matrix machining, steel matrix pre-treatment, steel matrix heat-treatment of annealing technique, the more first Nickel Plating Treatments of Ni Cu P, fluxing agent processing, steel matrix preheating are carried out to steel matrix inner surface, melting Redford alloy alloy, plunger pump rotor is made in or immersion, casting, machining.The bimetallic faying face obtained by the way of the casting of the present invention, not only performance is up to standard but also equipment investment is few, technological operation is easy, reduces workpiece cost, is adapted to wide popularization and application, has a extensive future.Compared with powder metallurgy, performance is more excellent, and eliminates heat treatment step, saves time and cost.
Description
Technical field
The invention belongs to compound casting technical field, and in particular to a kind of plunger pump rotor copper base-steel bi-metal composite casting
Make method.
Background technology
Plunger pump is to use a kind of extremely wide gearing in production, is an important device of hydraulic system.It
Moved back and forth by plunger in cylinder body, the volume of seal operation cavity volume is changed to realize oil suction, force feed.Plunger pump has
Have the advantages that high rated pressure, compact-sized, efficiency high and Flow-rate adjustment are convenient, be widely used in high pressure, big flow and stream
Amount needs the occasion that adjusts, in such as hydraulic press, engineering machinery and Transport Machinery.Plunger forms friction at work with rotor
Pair, its quality determine performance and the life-span of plunger pump.Production requirement plunger pump is intended to high speed, high temperature, top load, varying load work
Condition is run, and this requires pump housing critical component --- rotor, there is the excellent attribute of each side：Wearability, thermal conductivity, shock resistance
Fatigue behaviour and intensity hardness etc..
The antifriction alloy used both at home and abroad at present is mainly two major classes：One kind is closed for Dispersed precipitate hard particles in soft body
Gold, such as：Lead base, the kamash alloy of babbitt metal system, the material melting point is low, and matter is soft, is only used for low load；Another kind of is hard
Distribution soft grit alloy in matter matrix, such as：Allen's metal alloy.Copper has good ductility, heat resistance, thermal conductivity, can be full
Use of the foot member under high temperature, high-speed working condition；The solid solubility of lead and copper is minimum, is distributed in the alloy with simple substance particle dispersion,
The continuity of copper body is changed, improves the wearability of copper in itself；Fusing point of lead particle itself is low, matter is soft, good in lubricating condition
Embedding Tibetan greasy dirt can be played in the case of good, complies with plunger effect；Mechanically activated or under lacking the DRY SLIDINGs such as lubricant,
Lubrication protection can be played a part of to friction pair in the form of simple substance or oxide, reduce the things such as " stinging axle ", " seizing ", " excessively heated axle "
Therefore occur.But the addition of lead while copper body wearability is improved, inevitably makes under its strong, hardness with distribution situation
Drop, directly influences pump housing load, impulse fatigue resistance energy, causes and then reduces rotor and the service life of pump.
The method for being commonly used to improve Allen's metal rotor mechanical performance is the method that bimetallic combines.Made of Allen's metal
For the wear-resisting working face of rotor inner layer, the material-high strength steel high by the use of strong hardness reinforces body as outer layer.Bimetallic composite casting
Producing material material, due to being synthesized using casting method, technique is simple, and cost is cheap, has great application prospect, but casting process
In two kinds of metal times of contact it is short, cooling rate is fast, drastically influence the combination of the two, this also turn into restrict bimetallic composite casting
Producing material material produces and the bottleneck of application.Therefore, how to make composite casting that there is good combination and performance, need further
Research.
The content of the invention
According to problems of the prior art, the invention provides a kind of plunger pump rotor copper base-steel bi-metal composite casting
Make method, it is intended that improve the Interface adhesive strength and performance of alloy.
The present invention uses following technical scheme：
A kind of plunger pump rotor copper base-steel bi-metal composite casting method, comprises the following steps：
Step 1：Turnning and milling plane mill, drilling, bore hole are carried out to steel matrix, described steel matrix is cylinder, in steel matrix
The heart is provided with a centre bore, and 9 circular ports are provided with around centre bore, and bottom is provided with metal mold lower cover；
Step 2：Steel matrix is placed in the oxygen aqueous solution of sodium oxide of mass concentration 10%, 20min is soaked in 50 DEG C, enters
Row oil removal treatment, neutrality is washed to, acid pickling and rust removing then is carried out to steel matrix surface with the hydrochloric acid of mass fraction 5%, is washed to
Neutrality, then drying are put stand-by in a dry environment；
Step 3：Heat-treatment of annealing technique is carried out to steel matrix：900 DEG C -1050 DEG C are heated slowly to, heats 15h-20h
After be cooled to room temperature；
Step 4：Steel matrix is immersed to the H of mass concentration 5% at room temperature2SO4Solution, retention time 1min, clear water rinse
To neutrality, drying, the more first Nickel Plating Treatments of Ni-Cu-P are carried out to steel matrix inner surface, nickel plating temperature is 75 DEG C, and nickel plating thickness is 7 μ
m-10μm；
Step 5：The aqueous solution from 46%KF containing mass percent and 54%KCl is fluxing agent, and solution concentration is
100g/L, steel matrix is immersed in the fluxing agent that temperature is 80 ± 5 DEG C and handles 10min, is then at the uniform velocity taken out, and at 150 ± 5 DEG C
At a temperature of dry；
Step 6：Steel matrix is placed in 1100-1200 DEG C of borax glass and preheats 2.5h, when steel matrix preheating temperature reaches
It is incubated during to 1150 DEG C and waits to cast；
Step 7：Graphite crucible is preheating to 600 DEG C, adds fine copper, temperature adjustment makes furnace temperature staged liter to 800-900 DEG C
Wen Houzai adjusts furnace temperature and all melted to copper, after standing 3-6min, is sufficiently stirred with graphite rod, sequentially adds Zn, Pb, Sn,
Latter metal, midfeather 5-7min are added after former metal melts completely, and is stirred continuously, adds lanthanum cerium copper
Rare earth alloy, stir, when smelting temperature reaches 1150-1250 DEG C, obtain Redford alloy alloy, thermometric to 1200 DEG C-
Wait to cast at 1250 DEG C, skimmed before casting and stir 10-30s；
Step 8：Steel matrix is immersed in Redford alloy alloy melt and starts or immersion, the hot-dip time is
10min, the steel matrix after hot dipping plating is taken out rapidly；
Step 9：Steel matrix casting Redford alloy alloy, whole casting cycle is carried out under the protection of borax glass,
Cast by the centre bore of steel matrix, Redford alloy alloy is full of 9 circular ports, described 9 circles under pressure
Shape hole is exactly the rising head required for casting, air cooling 2min after the completion of casting, after Redford alloy alloy graining, is sprayed to cast(ing) surface
Water 3-5min is cooled to room temperature；
Step 10：Machining is made plunger pump rotor, and it by 9 internal diameters is 28mm, external diameter that described plunger pump rotor, which is,
It is embedded in the steel matrix that external diameter is 190mm, internal diameter is a height of 158mm of 60mm and is formed by the 34mm Redford alloy alloy collar
Bimetal part.
Preferably, described steel matrix includes the chemical composition of following percentage by weight:C0.450%, Si0.250%,
Mn0.620%, P0.021%, S0.023%, Cr0.140%, Mo0.020%, Ni0.018%, Cu0.230%,
Ti0.003%, V0.007%, W0.010%, surplus Fe.
Preferably, described Redford alloy alloy includes the chemical composition of following percentage by weight：Pb20%, Sn5%,
Zn2%, P0.5%, RE0.2%, Ni1.5%, surplus Cu.
Preferably, the more first nickel plating of described Ni-Cu-P use formula as below：Nickel sulfate 40g/L, sodium hypophosphite 25g/L, sulphur
Sour copper 0.85g/L, sodium acetate 40g/L, sodium citrate 45g/L, thiocarbamide 1g/L, lead acetate 1g/L, surplus are distilled water.
Preferably, described plunger pump rotor reserves 10mm casting allowance respectively up and down on two end faces.
The beneficial effects of the present invention are：
1) steel matrix is preheated anti-oxidation；Faying face is complete, rare oxidation.
2) polynary Ni-Cu-P chemistry plating piece corrosion resistance and wearability are good, add Cu elements and form multi-element layers, are not only dissolved
Strengthen ni solid solution, also separate out Cu in heating0.81Ni0.19Strengthen equal, improve the hardness of material.After base steel nickel plating, steel copper
Bimetallic can reach more than 14 μm by spreading compound atom combination transition thickness, substantially improve the compound of Copper steel cladding interface
Ability.
3) using the casting method of the present invention, bond strength has been obtained and has been not less than 100 μm higher than 134MPa, atoms permeating layer
Bimetallic junction alloying part, it is ensured that two kinds of metal interface bond strengths.
4) present invention can effectively be prevented shrinkage cavity and the generation of crackle, be more beneficial for due to 9 circular ports of peritrochanteric
The solidification of casting.It is to be poured into a mould by centre bore under pressure so that molten alloyed copper overflows in the casting process of plunger pump rotor
Around 9 holes thus be advantageous to the floating of gas and slag in liquation, so as to further prevent the formation of stomata and slag blister.
5) it is seldom using the present invention plunger pump cylinder body casting defect pouring into a mould out, the defects of without stomata and slag inclusion, if
It is reasonable to count casting technological parameter.
6) or immersion not only makes steel matrix surface form one layer of interphase layer, and has also been stained with one on its surface
The Redford alloy alloy that does not solidify completely of layer, its Redford alloy alloy easily with casting in casting cycle are merged, formd
Whole metallurgical binding.As hot-dip 10min, diffusion is the most abundant, and the transition region of formation is most wide, in 50um or so, effectively improves
The Interface adhesive strength and performance of alloy.
7) fluxing agent is coated on steel matrix surface during plating is helped, and forms one layer of uniform salt film；In hot dipping
Cheng Zhong, the salt film instant melting on steel matrix surface, making Redford alloy alloy melt, wetting is concurrent rapidly in steel matrix specimen surface
Raw metallurgical reaction, last fluxing agent, which is incorporated in Redford alloy alloy melt, forms dregs.
8) the obtained bimetallic faying face by the way of the casting of the present invention, not only performance is up to standard but also equipment investment
Less, technological operation is easy, reduces workpiece cost, is adapted to wide popularization and application, has a extensive future.Compared with powder metallurgy, performance is more
To be excellent, and heat treatment step is eliminated, save time and cost.
Embodiment
With reference to embodiments, the technical scheme in the present invention is clearly and completely described.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
Belong to the scope of protection of the invention.
A kind of plunger pump rotor copper base-steel bi-metal composite casting method, comprises the following steps：
Step 1：Turnning and milling plane mill, drilling, bore hole are carried out to steel matrix, described steel matrix is cylinder, in steel matrix
The heart is provided with a centre bore, and 9 circular ports are provided with around centre bore, and bottom is provided with metal mold lower cover；
Step 2：Steel matrix is placed in the oxygen aqueous solution of sodium oxide of mass concentration 10%, 20min is soaked in 50 DEG C, enters
Row oil removal treatment, neutrality is washed to, acid pickling and rust removing then is carried out to steel matrix surface with the hydrochloric acid of mass fraction 5%, is washed to
Neutrality, then drying are put stand-by in a dry environment；
Step 3：Heat-treatment of annealing technique is carried out to steel matrix：900 DEG C -1050 DEG C are heated slowly to, heats 15h-20h
After be cooled to room temperature；
Step 4：Steel matrix is immersed to the H of mass concentration 5% at room temperature2SO4Solution, retention time 1min, clear water rinse
To neutrality, drying, the more first Nickel Plating Treatments of Ni-Cu-P are carried out to steel matrix inner surface, nickel plating temperature is 75 DEG C, and nickel plating thickness is 7 μ
m-10μm；
Step 5：The aqueous solution from 46%KF containing mass percent and 54%KCl is fluxing agent, and solution concentration is
100g/L, steel matrix is immersed in the fluxing agent that temperature is 80 ± 5 DEG C and handles 10min, is then at the uniform velocity taken out, and at 150 ± 5 DEG C
At a temperature of dry；
Step 6：Steel matrix is placed in 1100-1200 DEG C of borax glass and preheats 2.5h, when steel matrix preheating temperature reaches
It is incubated during to 1150 DEG C and waits to cast；
Step 7：Graphite crucible is preheating to 600 DEG C, adds fine copper, temperature adjustment makes furnace temperature staged liter to 800-900 DEG C
Wen Houzai adjusts furnace temperature and all melted to copper, after standing 3-6min, is sufficiently stirred with graphite rod, sequentially adds Zn, Pb, Sn,
Latter metal, midfeather 5-7min are added after former metal melts completely, and is stirred continuously, adds lanthanum cerium copper
Rare earth alloy, stir, when smelting temperature reaches 1150-1250 DEG C, obtain Redford alloy alloy, thermometric to 1200 DEG C-
Wait to cast at 1250 DEG C, skimmed before casting and stir 10-30s；
Step 8：Steel matrix is immersed in Redford alloy alloy melt and starts or immersion, the hot-dip time is
10min, the steel matrix after hot dipping plating is taken out rapidly；
Step 9：Steel matrix casting Redford alloy alloy, whole casting cycle is carried out under the protection of borax glass,
Cast by the centre bore of steel matrix, Redford alloy alloy is full of 9 circular ports, described 9 circles under pressure
Shape hole is exactly the rising head required for casting, air cooling 2min after the completion of casting, after Redford alloy alloy graining, is sprayed to cast(ing) surface
Water 3-5min is cooled to room temperature；
Step 10：Machining is made plunger pump rotor, and it by 9 internal diameters is 28mm, external diameter that described plunger pump rotor, which is,
It is embedded in the steel matrix that external diameter is 190mm, internal diameter is a height of 158mm of 60mm and is formed by the 34mm Redford alloy alloy collar
Bimetal part.
Described steel matrix includes the chemical composition of following percentage by weight:C0.450%, Si0.250%,
Mn0.620%, P0.021%, S0.023%, Cr0.140%, Mo0.020%, Ni0.018%, Cu0.230%,
Ti0.003%, V0.007%, W0.010%, surplus Fe.
Described Redford alloy alloy includes the chemical composition of following percentage by weight：Pb20%, Sn5%, Zn2%,
P0.5%, RE0.2%, Ni1.5%, surplus Cu.
The more first nickel plating of described Ni-Cu-P use formula as below：Nickel sulfate 40g/L, sodium hypophosphite 25g/L, copper sulphate
0.85g/L, sodium acetate 40g/L, sodium citrate 45g/L, thiocarbamide 1g/L, lead acetate 1g/L, surplus are distilled water.
Described plunger pump rotor reserves 10mm casting allowance respectively up and down on two end faces.
Claims (5)
1. a kind of plunger pump rotor copper base-steel bi-metal composite casting method, it is characterised in that comprise the following steps：
Step 1：Turnning and milling plane mill, drilling, bore hole are carried out to steel matrix, described steel matrix is cylinder, and the center of steel matrix is set
There is a centre bore, 9 circular ports are provided with around centre bore, bottom is provided with metal mold lower cover；
Step 2：Steel matrix is placed in the oxygen aqueous solution of sodium oxide of mass concentration 10%, 20min is soaked in 50 DEG C, is removed
Oil processing, neutrality is washed to, acid pickling and rust removing then is carried out to steel matrix surface with the hydrochloric acid of mass fraction 5%, is washed to neutrality,
Then drying is put stand-by in a dry environment；
Step 3：Heat-treatment of annealing technique is carried out to steel matrix：It is heated slowly to 900 DEG C -1050 DEG C, heats cold after 15h-20h
But to room temperature；
Step 4：Steel matrix is immersed to the H of mass concentration 5% at room temperature2SO4Solution, retention time 1min, clear water are rinsed into
Property, drying, to the steel matrix inner surface progress more first Nickel Plating Treatments of Ni-Cu-P, nickel plating temperature is 75 DEG C, and nickel plating thickness is 7 μm -10
μm；
Step 5：The aqueous solution from 46%KF containing mass percent and 54%KCl is fluxing agent, solution concentration 100g/L,
Steel matrix is immersed in the fluxing agent that temperature is 80 ± 5 DEG C and handles 10min, is then at the uniform velocity taken out, and at a temperature of 150 ± 5 DEG C
Drying；
Step 6：Steel matrix is placed in 1100-1200 DEG C of borax glass and preheats 2.5h, when steel matrix preheating temperature reaches
It is incubated at 1150 DEG C and waits to cast；
Step 7：Graphite crucible is preheating to 600 DEG C, adds fine copper, temperature adjustment is to 800-900 DEG C, after furnace temperature staged is heated up
Furnace temperature is adjusted again to copper all to melt, and after standing 3-6min, is sufficiently stirred with graphite rod, is sequentially added Zn, Pb, Sn, before treating
A kind of metal adds latter metal, midfeather 5-7min after melting completely, and is stirred continuously, and adds lanthanum cerium copper rare earth
Alloy, stir, when smelting temperature reaches 1150-1250 DEG C, obtain Redford alloy alloy, thermometric is to 1200 DEG C -1250 DEG C
When wait to cast, skimmed before casting and stir 10-30s；
Step 8：Steel matrix is immersed in Redford alloy alloy melt and starts or immersion, the hot-dip time is 10min,
Steel matrix after hot dipping plating is taken out rapidly；
Step 9：Steel matrix casting Redford alloy alloy, whole casting cycle is carried out under the protection of borax glass, by steel
The centre bore of matrix is cast, and Redford alloy alloy is full of 9 circular ports, described 9 circular ports under pressure
It is exactly the rising head required for casting, air cooling 2min after the completion of casting, after Redford alloy alloy graining, to cast(ing) surface water spray 3-
5min is cooled to room temperature；
Step 10：Machining is made plunger pump rotor, and it by 9 internal diameters is 28mm that described plunger pump rotor, which is, external diameter is
The 34mm Redford alloy alloy collar is embedded in external diameter by being formed in steel matrix that 190mm, internal diameter are a height of 158mm of 60mm
Bimetal part.
A kind of 2. plunger pump rotor copper base-steel bi-metal composite casting method according to claim 1, it is characterised in that：Institute
The steel matrix stated includes the chemical composition of following percentage by weight:C0.450%, Si0.250%, Mn0.620%, P0.021%,
S0.023%, Cr0.140%, Mo0.020%, Ni0.018%, Cu0.230%, Ti0.003%, V0.007%, W0.010%,
Surplus is Fe.
A kind of 3. plunger pump rotor copper base-steel bi-metal composite casting method according to claim 1, it is characterised in that：Institute
The Redford alloy alloy stated includes the chemical composition of following percentage by weight：Pb20%, Sn5%, Zn2%, P0.5%,
RE0.2%, Ni1.5%, surplus Cu.
A kind of 4. plunger pump rotor copper base-steel bi-metal composite casting method according to claim 1, it is characterised in that：Institute
The more first nickel plating of Ni-Cu-P stated use formula as below：Nickel sulfate 40g/L, sodium hypophosphite 25g/L, copper sulphate 0.85g/L, acetic acid
Sodium 40g/L, sodium citrate 45g/L, thiocarbamide 1g/L, lead acetate 1g/L, surplus are distilled water.
A kind of 5. plunger pump rotor copper base-steel bi-metal composite casting method according to claim 1, it is characterised in that：Institute
The plunger pump rotor stated reserves 10mm casting allowance respectively up and down on two end faces.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110788301A (en) * | 2019-10-18 | 2020-02-14 | 郑州机械研究所有限公司 | Method suitable for strengthening braze-coating modification on surface of copper-based bearing bush |
| CN111287956A (en) * | 2020-02-26 | 2020-06-16 | 盐城市崇达石化机械有限公司 | Novel high-pressure plunger pump plunger |
| CN112355283A (en) * | 2020-11-12 | 2021-02-12 | 中北大学 | Interface active coating for aluminum-steel bimetal liquid-solid composite casting |
| CN113927019A (en) * | 2021-10-14 | 2022-01-14 | 中北大学 | Method for forming bimetal by secondary composite casting |
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| CN112355283A (en) * | 2020-11-12 | 2021-02-12 | 中北大学 | Interface active coating for aluminum-steel bimetal liquid-solid composite casting |
| CN113927019A (en) * | 2021-10-14 | 2022-01-14 | 中北大学 | Method for forming bimetal by secondary composite casting |
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