CN106367687A - Main valve element - Google Patents
Main valve element Download PDFInfo
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- CN106367687A CN106367687A CN201610788555.6A CN201610788555A CN106367687A CN 106367687 A CN106367687 A CN 106367687A CN 201610788555 A CN201610788555 A CN 201610788555A CN 106367687 A CN106367687 A CN 106367687A
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- Prior art keywords
- valve
- valve sleeve
- main valve
- electrobrightening
- sleeve
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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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
- C22C33/0285—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5% with Cr, Co, or Ni having a minimum content higher than 5%
-
- 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
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- 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
-
- 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
-
- 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
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D15/00—Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F3/00—Electrolytic etching or polishing
- C25F3/16—Polishing
- C25F3/22—Polishing of heavy metals
- C25F3/24—Polishing of heavy metals of iron or steel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
A main valve element is made of stainless steel. The main valve element comprises a valve body. The valve body comprises a valve seat and valve sleeves. The valve sleeves comprise the upper valve sleeve and the lower valve sleeve. The valve seat, the lower valve sleeve and the upper valve sleeve are sequentially and closely connected from bottom to top. Through-flow holes are evenly formed in the upper valve sleeve along the outer circle of the upper valve sleeve, and through-flow holes are evenly formed in the lower valve sleeve along the outer circle of the lower valve sleeve. According to the main valve element provided by the invention, through reasonable constituent proportions and addition of reinforcement elements, the mechanical property, wear resistance and corrosion resistance of stainless steel are improved; and in the manufacturing process, the manufacturing technique is optimized, a composite film is formed on the surface of the stainless steel, the adhesion performance is further enhanced, and the service life of the main valve element is effectively prolonged.
Description
Technical field
The invention belongs to mechanical field, it is specifically related to a kind of main valve plug.
Background technology
Valve is the control parts in fluid delivery system, has cut-off, regulation, water conservancy diversion, prevents adverse current, voltage stabilizing, shunting
Or the function such as overflow pressure relief.For the valve of fluid control systems, from simplest stop valve to extremely complex robot control system(RCS)
In various valves used, its kind and specification quite various.Valve can be used for controlling empty gas and water, steam, various corrosivity to be situated between
The flowing of all kinds fluid such as matter, mud, oil product, liquid metal and radiating medium.Valve is also divided into cast iron according to material
Valve, cast steel valve, stainless valve (201,304,316 etc.), chrome-molybdenum steel valve, Chrominm-molybdenum-vanadium steel valve, dual phase steel valve, mould
Material valve, nonstandard customized grade valve material.Valve needs there is stronger anti-wear performance and mechanical property in use, to ensure
The service life of valve, and the universal performance of material being used at present is not strong, often maintenance setting is changed to lead to valve needs.
Content of the invention
The present invention be directed to problem above, provide a kind of wear-resisting, main valve plug that mechanical property is strong.
The present invention solve above technical problem scheme be, a kind of main valve plug, be made of stainless steel,
Including:
Valve body, described valve body includes valve seat, valve pocket；
Valve pocket includes upper valve sleeve and lower valve sleeve: valve seat, lower valve sleeve, upper valve sleeve are closely coupled successively from bottom to top；On described
Valve pocket is uniformly provided with through flow hole along upper valve sleeve is cylindrical, and described lower valve sleeve is uniformly provided with through flow hole along lower valve sleeve is cylindrical；
Wherein, described stainless composition is by mass percentage: c0.05%～0.09%, cr7%～11%, n4%
～6%, si0.8%～1%, p0.02%～0.06%, s0.02%～0.07%, ca0.01～0.03%, ce0.01%～
0.03%, la0.01%～0.03%, balance of fe.
In the stainless composition proportion of the present invention, cr11%～15% can form passivating film, protects rustless steel not
By while corrosion, improve stainless oxidation resistance, ce and la has higher standard chemical point position, and their addition can
To improve spontaneous potential, improve stainless decay resistance, in addition, the addition of ce and la can also suppress passivating film
Growing up of oxide grain, refines the crystal grain of oxide, thus improving the moulding of passivating film and toughness, ce and la has larger former
Sub- radius, can promote matrix element dot matrix to expand, promote the diffusion of cr element, indirectly promote the formation of cr2o3 protecting film,
It is ce0.01%～0.03% in addition, during la0.01%～0.03%, the thermodynamic stability of alloy can be made to improve, make
One layer of the quick formation of alloy surface is compact and complete, and the passivating film being firmly combined with matrix.Ce and la element is uniform on crystal boundary
Distribution, can suppress on crystal boundary the precipitation of harmful field trash, serve purification phase boundary, can also reduce containing of sulfur in rustless steel
Amount, cleaning molten steel, is that the field trash total amount of molten steel China reduces, when rare earth element addition is excessive, stainless abrasion speed
Degree reduces on the contrary, and therefore, the addition of ce and la element plays an important role.The addition of rare earth can significantly smaller profit be concentrated
Area, and energy thinning microstructure, improve intensity, strengthen stainless resistance sexuality, ce and la of addition itself also can oxidized shape
Become oxide-film, improve stainless wear and corrosion behavior further.In the present invention ni is not used as addition element, a side
Face is that the another aspect present invention usually improves stainless intensity, low-temperature flexibility and weldering using n unit because the cost of ni is somewhat expensive
Connecing property, increases aging sensitivity, can substitute ni element role, the addition of n element needs strict control simultaneously
System, if addition is excessive, can increase stainless fragility, lead to stainless mechanical properties decrease, and addition is very few, with
Other addition element can not form good synergism, through long-term experiment, in the element proportioning of the present invention, n element
When 4%～6%, stainless mechanical property is best.
Further, in described rustless steel, the total amount of element ce and la and the ratio of element s are not more than 1.
Due to dissolubility in molten steel for ce and la less, so the addition of ce and la will strictly be controlled with element s's
Ratio, if the amount adding is excessive, remaining ce and la element can separate out on the contrary on crystal boundary, form fusing point and are less than rolling temperature
Low-melting-point eutectic, the stainless performance of reduction, and addition has been lacked and can not have been played a role.
A kind of preparation method of main valve plug, comprises the following steps:
S1: configure the raw material of described composition, after raw material mix homogeneously, using irony abrading-ball grinding, sieved after grinding
Choosing, will mix under the powder elder generation aqueous solvent after screening, mixes in ethanol, compressing pressed compact after drying after drying again；
S2: will first be warming up to 480-520 DEG C under pressed compact vacuum, be incubated 20-50min, then heat to 1220-1260 DEG C,
Insulation 0.5-1.2h, is cooled to 700～900 DEG C, finally naturally cools to room temperature and obtain sintered stainless steel, after over mechanical processing
Obtain semi-finished product；
S3: obtain finished product by after semi-finished product electrobrightening, plating.
In grinding, abrading-ball and the mass ratio of raw material are 5～7:1, and powder grinding medium uses ethanol；
The particle diameter distribution of the powder after screening is, by matter according to quantity ratio more than 20 μm contents for 20～25%, 10～20 μm are
40～60%, 5～20 μm less than 10～20%, 5 microns 5～10%；
Described green density is 7.05～7.07g/cm3.
During grinding, abrading-ball is that material ball ratio plays an important role to grinding process with the mass ratio of raw material, closes
The material ball ratio of reason does not enter can guarantee that the granule of grinding more uniformly moreover it is possible to the degree of guarantee mechanical alloying is higher, mill efficiency
More preferably, in sintering, the particle diameter distribution of powder needs rational collocation, larger powder constituent frame structure, and compared with Amylum Tritici Testa
Last calking, in sintering, less grinding has higher activity, is changed into liquid phase first, it is possible to increase the effect of sintering and final product
The intensity of product.
Further, described sintering process is: 1h is warming up to 500 DEG C, is incubated 30min, then is warming up to 1250 DEG C in 2h, protects
Warm 1h, then 1h be cooled to 800 DEG C, finally naturally cool to room temperature.
The control of sintering temperature and sintering time is the most important parameter of sintering process, and this sintering process heats up in the early stage
To 500 DEG C of temperature that then insulation 30min can ensure that base substrate uniformly, all transmitted in temperature retention time in whole base substrate temperature
Cheng Hou, is warming up to 1250 DEG C of memory heat preservation sintering 1h, temperature too low it is impossible to provide enough sintering energy, whole mass transfer diffusion
Process is difficult to carry out, and the product sintering out can not reach preferable state, and volume sintering temperature is too high not only to cause burning, also can
Cause the bonding of base substrate and sintering furnace, be not easy to the PROCESS FOR TREATMENT in later stage.In temperature-fall period, speed can lead to very much be unable to shape slowly
Become enough solid solution, and cooling rate is too fast remains excessive stress in the product, be difficult to remove in the later stage, directly affect final
The mechanical property of product.
Further, the electrolytic polishing liquid that electrobrightening uses is by mass percentage: the electrolysis that electrobrightening uses is thrown
Light liquid is by mass percentage: phosphoric acid 51～55%, sulphuric acid 42～46%, and trihydroxy methyl amylalcohol polyethenoxy ether 3～5% is molten
Liquid free acidity is 1:(7～8 with the ratio of total acidity).
Polishing electric current, reducing energy consumption can be reduced using the electrolytic polishing liquid of this proportioning, can ensure that the volume of being electrolysed out simultaneously
The surface of stainless steel work-piece presents limpid, smooth effect, and limpid surface is also beneficial to improve stainless resistance to air corruption
Corrosion energy.
Further, the temperature of electrobrightening is 60～80 DEG C, anodic current density 8～13a/dm2, cathode-current density
For 3～8a/dm2, electrobrightening time 10～15min.
Different electrolytic polishing liquids needs to coordinate different electrolytic polishing process, the electrobrightening providing for the present invention
Liquid, using rational electrobrightening temperature, time, and selects suitable electric current, density to can ensure that in electrolytic process
Stable, the surface of final electrobrightening is uniformly, smooth.
Further, described anode is semi worked pieces, and described negative electrode is stereotype, the ratio of anode and negative electrode be 1:2～
2.5, negative electrode is 35～40cm with the distance of anode.
Suitable negative electrode and anode ratio are it is ensured that the stablizing of electrobrightening process, and suitable negative electrode and anode
When distance can ensure that the electrolytic polishing liquid using the present invention, can with maximum possible raising electrolytic polishing liquid utilization rate,
While improve production efficiency, make full use of electrolytic polishing liquid.
Further, used in described electroplating technology, electroplate liquid is cr2(so4)390～100g/l, feso4·7h2o 1
～2g/l, niso4·6h2O 30～35g/l, kcl 60～70g/l, stabilizer 100～120g/l, plating density be 10～
20a/dm2, ph value is 2～4.
Further, being additionally added thickness in described plating is 10～12nm, the graphene film of size 100～200nm.
Add graphene film, the multiphase electrodeposited coating of formation can effectively improve the performance of stainless steel surfaces, final rustless steel
Wearability, corrosion resistance all has greatly improved, and using the graphene film of nano thickness and size, Ke Yiti in the present invention
The high bond strength with stainless steel surfaces, has complex effect with ni layer simultaneously, further enhances anti-wear performance.
The main valve plug of present invention preparation is contrasted by rational composition, adds and strengthens element, improves stainless mechanical property
Energy and wear and corrosion behavior, through optimizing preparation technology during preparation, form composite membrane in stainless steel surfaces, further
Strengthen mucosa performance, effectively extend the service life of main valve plug.
Specific embodiment
Below by specific embodiment, the present invention is further described；
As shown in figure 1, a kind of main valve plug, it is made of stainless steel, comprising:
Valve body, described valve body includes valve seat, valve pocket；
Valve pocket includes upper valve sleeve and lower valve sleeve: valve seat, lower valve sleeve, upper valve sleeve are closely coupled successively from bottom to top；On described
Valve pocket is uniformly provided with through flow hole along upper valve sleeve is cylindrical, and described lower valve sleeve is uniformly provided with through flow hole along lower valve sleeve is cylindrical；
The preparation method embodiment of main valve plug of the present invention is as follows:
Embodiment 1
S1: configure the raw material of described composition, by mass percentage for c0.05%, cr7%, n6%, si0.8%,
P0.06%, s0.02%%, ca0.01%, ce0.01%, la0.01%, balance of fe, after raw material mix homogeneously, using ferrum
Matter abrading-ball grinding, abrading-ball is 5:1 with the mass ratio of raw material, and powder grinding medium uses ethanol；After grinding 5h, powder is taken out after drying
Screened, the particle diameter distribution filtering out powder is, by matter according to quantity than, more than 20 μm contents are 20%, and 10～20 μm is 60%,
5～20 μm 10%, less than 5 microns 10%, powder is mixed 2h under aqueous solvent, mix 1.5h after drying in ethanol, then
Dry, compressing pressed compact, powder compact is to density 7.05g/cm3；
S2: pressed compact 1h is warming up to 500 DEG C, is incubated 30min, then is warming up to 1250 DEG C in 2h, be incubated 1h, then 1h cooling
To 800 DEG C, finally naturally cool to room temperature, obtain sintered stainless steel, obtain semi-finished product after over mechanical processing；
S3: obtain finished product by after semi-finished product electrobrightening, plating, electrolytic polishing liquid is by mass percentage: phosphoric acid 51%,
Sulphuric acid 46%, trihydroxy methyl amylalcohol polyethenoxy ether 3%, solution free acidity is 1:7 with the ratio of total acidity, electroplates Anodic
For semi worked pieces, negative electrode is stereotype, and anode is 1:2 with the ratio of negative electrode, and negative electrode is 35cm with the distance of anode, electroplating technology
Used in electroplate liquid be cr2(so4)3100g/l, feso47h2o 1g/l, niso4 6h2O 35g/l, kcl 60g/l,
Stabilizer 120g/l, plating density is 20a/dm2, and ph value is 2, and being additionally added thickness in plating is 10nm, the graphite of size 200nm
Alkene piece.Embodiment 2
S1: configure the raw material of described composition, by mass percentage for c0.09%, cr7%, n6%, si0.8%,
P0.02%, s0.05%, ca, 0.03%, ce0.03%, la0.01%, balance of fe, after raw material mix homogeneously, using ferrum
Matter abrading-ball grinding, abrading-ball is 5:1 with the mass ratio of raw material, and powder grinding medium uses ethanol；After grinding 6h, powder is taken out after drying
Screened, the particle diameter distribution filtering out powder is, by matter according to quantity than, more than 20 μm contents are 25%, and 10～20 μm is 60%,
5～20 μm 10%, less than 5 microns 5%, powder is mixed 1.5h under aqueous solvent, mixes 2h in ethanol after drying, then dry
Dry compressing obtain pressed compact, green density 7.06g/cm3；
S2: pressed compact 1h is warming up to 520 DEG C, is incubated 50min, then is warming up to 1260 DEG C in 2h, be incubated 1h, then 1h cooling
To 900 DEG C, finally naturally cool to room temperature, obtain sintered stainless steel, obtain semi-finished product after over mechanical processing；
S3: obtain finished product by after semi-finished product electrobrightening, plating, electrolytic polishing liquid is by mass percentage: phosphoric acid 51%,
Sulphuric acid 44%, trihydroxy methyl amylalcohol polyethenoxy ether 5%, solution free acidity is 1:7.5 with the ratio of total acidity, electroplates middle-jiao yang, function of the spleen and stomach
Extremely semi worked pieces, negative electrode is stereotype, and anode is 1:2 with the ratio of negative electrode, and negative electrode is 40cm with the distance of anode, galvanizer
Used in skill, electroplate liquid is cr2(so4)3100g/l, feso47h2o 1g/l, niso4 6h2O 30g/l, kcl 70g/
L, stabilizer 110g/l, plating density is 18a/dm2, and ph value is 3, and being additionally added thickness in plating is 12nm, the stone of size 100nm
Black alkene piece.Embodiment 3
S1: configure the raw material of described composition, by mass percentage for c0.09%, cr11%, n6%, si1%,
P0.06%, s0.06%, ca0.03%, ce0.03%, la0.01%, balance of fe, after raw material mix homogeneously, using irony
Abrading-ball grinding, abrading-ball is 6:1 with the mass ratio of raw material, and powder grinding medium uses ethanol, after grinding 6h, powder is taken out drying laggard
Row screening, the particle diameter distribution filtering out powder is, by matter according to quantity than, more than 20 μm contents are 23%, and 10～20 μm is 50%, 5
～20 μm 20%, less than 5 microns 7%, powder is mixed 2h under aqueous solvent, mixes 1h in ethanol after drying, then dry
Compressing obtain pressed compact, powder compact is to density 7.07g/cm3；
S2: pressed compact 1h is warming up to 480 DEG C, is incubated 30min, then is warming up to 1220 DEG C in 2h, be incubated 1h, then 1h cooling
To 700 DEG C, finally naturally cool to room temperature, obtain sintered stainless steel, obtain semi-finished product after over mechanical processing；
S3: obtain finished product by after semi-finished product electrobrightening, plating, electrolytic polishing liquid is by mass percentage: phosphoric acid 55%,
Sulphuric acid 42%, trihydroxy methyl amylalcohol polyethenoxy ether 3%, solution free acidity is 1:8 with the ratio of total acidity, electroplates Anodic
For semi worked pieces, negative electrode is stereotype, and anode is 1:2.4 with the ratio of negative electrode, and negative electrode is 40cm with the distance of anode, galvanizer
Used in skill, electroplate liquid is cr2(so4)3100g/l, feso47h2o 1.5g/l, niso4 6h2O 33g/l, kcl
67g/l, stabilizer 110g/l, plating density is 18a/dm2, and ph value is 3, and being additionally added thickness in plating is 12nm, size 170nm
Graphene film.Embodiment 4
S1: configure the raw material of described composition, by mass percentage for c0.08%, cr8%, n6%, si0.8%,
P0.06%, s0.02%%, ca0.02%, ce0.01%, la0.01%, balance of fe, after raw material mix homogeneously, using ferrum
Matter abrading-ball grinding, abrading-ball is 5:1 with the mass ratio of raw material, and powder grinding medium uses ethanol, after grinding 7h, powder is taken out after drying
Screened, the particle diameter distribution filtering out powder is, by matter according to quantity than, more than 20 μm contents are 24%, and 10～20 μm is 54%,
5～20 μm 14%, less than 5 microns 8%, powder is mixed 2h under aqueous solvent, mixes 1h in ethanol after drying, then dry
Compressing obtain pressed compact, powder compact is to density 7.07g/cm3；
S2: pressed compact 1h is warming up to 490 DEG C, is incubated 30min, then is warming up to 1230 DEG C in 2h, be incubated 1h, then 1h cooling
To 900 DEG C, finally naturally cool to room temperature, obtain sintered stainless steel, obtain semi-finished product after over mechanical processing；
S3: obtain finished product by after semi-finished product electrobrightening, plating, electrolytic polishing liquid is by mass percentage: phosphoric acid 55%,
Sulphuric acid 42%, trihydroxy methyl amylalcohol polyethenoxy ether 3%, solution free acidity is 1:7 with the ratio of total acidity, electroplates Anodic
For semi worked pieces, negative electrode is stereotype, and anode is 1:2 with the ratio of negative electrode, and negative electrode is 35cm with the distance of anode, electroplating technology
Used in electroplate liquid be cr2(so4)390g/l, feso47h2o 2g/l, niso4 6h2O 35g/l, kcl 60g/l, surely
Determine agent 120g/l, plating density is 20a/dm2, and ph value is 2, being additionally added thickness in plating is 11nm, the Graphene of size 200nm
Piece.
Embodiment 5
S1: configure the raw material of described composition, by mass percentage for c0.09%, cr11%, n4%, si1%,
P0.06%, s0.03%, ca0.01, %, ce0.01%, la0.01%, balance of fe, after raw material mix homogeneously, using ferrum
Matter abrading-ball grinding, abrading-ball is 5:1 with the mass ratio of raw material, and powder grinding medium uses ethanol, after grinding 7h, powder is taken out after drying
Screened, the particle diameter distribution filtering out powder is, by matter according to quantity than, more than 20 μm contents are 25%, and 10～20 μm is 60%,
5～20 μm 10%, less than 5 microns 5%, powder is mixed 2h under aqueous solvent, mixes 1h in ethanol after drying, then dry
Compressing obtain pressed compact, powder compact is to density 7.07g/cm3；
S2: pressed compact 1h is warming up to 500 DEG C, is incubated 30min, then is warming up to 1250 DEG C in 2h, be incubated 1h, then 1h cooling
To 800 DEG C, finally naturally cool to room temperature, obtain sintered stainless steel, obtain semi-finished product after over mechanical processing；
S3: obtain finished product by after semi-finished product electrobrightening, plating, electrolytic polishing liquid is by mass percentage: phosphoric acid 51%,
Sulphuric acid 46%, trihydroxy methyl amylalcohol polyethenoxy ether 3%, solution free acidity is 1:8 with the ratio of total acidity, electroplates Anodic
For semi worked pieces, negative electrode is stereotype, and anode is 1:2.4 with the ratio of negative electrode, and negative electrode is 35～40cm with the distance of anode, electricity
Used in depositing process, electroplate liquid is cr2(so4)395g/l, feso47h2o 1g/l, niso4 6h2O 35g/l, kcl
60g/l, stabilizer 120g/l, plating density is 20a/dm2, and ph value is 2, and being additionally added thickness in plating is 12nm, size 200nm
Graphene film.
Comparative example 1
This comparative example is only with the difference of embodiment 1: the composition of configuration is common stainless steel.
Comparative example 2
This comparative example is only with the difference of embodiment 1: in the composition of configuration, the total amount of ce and la with the ratio of element s is
3.
Comparative example 3
This comparative example is only with the difference of embodiment 1: without screening after grinding, is directly sintered.
Comparative example 4
This comparative example is only with the difference of embodiment 1: does not carry out electrobrightening before plating.
Comparative example 5
This comparative example is only with the difference of embodiment 1: is added without graphene film in plating.
Table 1 embodiment and comparative example performance comparison data
Preferable wearability is had by the main valve plug that the performance comparison of embodiment and comparative example can be seen that present invention preparation
And mechanical property.
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 (8)
1. a kind of main valve plug, is made of stainless steel it is characterised in that including:
Valve body, described valve body includes valve seat, valve pocket；
Valve pocket includes upper valve sleeve and lower valve sleeve: valve seat, lower valve sleeve, upper valve sleeve are closely coupled successively from bottom to top；Described upper valve sleeve
It is uniformly provided with through flow hole along upper valve sleeve is cylindrical, described lower valve sleeve is uniformly provided with through flow hole along lower valve sleeve is cylindrical；
Wherein, described stainless composition is by mass percentage: c0.05%～0.09%, n4%～6%, cr7%～
11%, si0.8%～1%, s0.02%～0.07%, p0.02%～0.06%, ca0.01～0.03%, ce0.01%～
0.03%, la0.01%～0.03%, balance of fe.
2. a kind of main valve plug according to claim 1 it is characterised in that: in described rustless steel the total amount of element ce and la with
The ratio of element s is not more than 1.
3. a kind of preparation method of main valve plug it is characterised in that: comprise the following steps:
S1: configure the raw material of described composition, after raw material mix homogeneously, using irony abrading-ball grinding, screened after grinding, will
Mix under powder elder generation aqueous solvent after screening, mix in ethanol again after drying, compressing pressed compact after drying；
S2: will first be warming up to 480-520 DEG C under pressed compact vacuum, be incubated 20-50min, then heat to 1220-1260 DEG C, insulation
0.5-1.2h, is cooled to 700～900 DEG C, finally naturally cools to room temperature and obtains sintered stainless steel, obtains after over mechanical processing
Semi-finished product；
S3: obtain finished product by after semi-finished product electrobrightening, plating.
4. a kind of main valve plug according to claim 3 preparation method it is characterised in that: electrobrightening use electrolysis throw
Light liquid is by mass percentage: phosphoric acid 51～55%, sulphuric acid 42～46%, and trihydroxy methyl amylalcohol polyethenoxy ether 3～5% is molten
Liquid free acidity is 1:(7～8 with the ratio of total acidity).
5. a kind of main valve plug according to claim 3 preparation method it is characterised in that: the temperature of electrobrightening be 60～
80 DEG C, anodic current density 8～13a/dm2, cathode-current density is 3～8a/dm2, electrobrightening time 10～15min.
6. a kind of main valve plug according to claim 3 preparation method it is characterised in that: in electrobrightening, anode is half
Finished work-piece, negative electrode is stereotype, and anode is 1:2～2.5 with the ratio of negative electrode, and negative electrode is 35～40cm with the distance of anode.
7. a kind of main valve plug according to claim 3 preparation method it is characterised in that: used in plating, electroplate liquid is
cr2(so4)390～100g/l, feso47h2o 1～2g/l, niso4 6h2O 30～35g/l, kcl 60～70g/l, surely
Determine agent 100～120g/l, plating density is 10～20a/dm2, and ph value is 2～4.
8. a kind of main valve plug according to claim 7 preparation method it is characterised in that: described plating in be additionally added thickness
For 10～12nm, the graphene film of size 100～200nm.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003313637A (en) * | 2002-02-19 | 2003-11-06 | Nippon Steel Corp | High-strength steel sheet having fine structure superior in formability, plating property and toughness, and manufacturing method therefor |
| CN301832628S (en) * | 2011-08-26 | 2012-02-08 | 应永华 | Spool (fhd400-31.5-14-07) |
| CN202768514U (en) * | 2012-08-20 | 2013-03-06 | 宁波市博尔法液压有限公司 | Balance valve suitable for oil cylinder system |
| CN103938255A (en) * | 2014-05-09 | 2014-07-23 | 浙江大学 | Preparation method of nickel-graphene complex phase |
| CN204358226U (en) * | 2015-01-04 | 2015-05-27 | 宁波长壁流体动力科技有限公司 | For the mangetic core assembly of automatically controlled backwash filter |
| CN104805366A (en) * | 2015-05-20 | 2015-07-29 | 中南大学 | Powder-metallurgy low-alloy steel and preparation method thereof |
-
2016
- 2016-08-30 CN CN201610788555.6A patent/CN106367687A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003313637A (en) * | 2002-02-19 | 2003-11-06 | Nippon Steel Corp | High-strength steel sheet having fine structure superior in formability, plating property and toughness, and manufacturing method therefor |
| CN301832628S (en) * | 2011-08-26 | 2012-02-08 | 应永华 | Spool (fhd400-31.5-14-07) |
| CN202768514U (en) * | 2012-08-20 | 2013-03-06 | 宁波市博尔法液压有限公司 | Balance valve suitable for oil cylinder system |
| CN103938255A (en) * | 2014-05-09 | 2014-07-23 | 浙江大学 | Preparation method of nickel-graphene complex phase |
| CN204358226U (en) * | 2015-01-04 | 2015-05-27 | 宁波长壁流体动力科技有限公司 | For the mangetic core assembly of automatically controlled backwash filter |
| CN104805366A (en) * | 2015-05-20 | 2015-07-29 | 中南大学 | Powder-metallurgy low-alloy steel and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 丁晖等: "稀土对铬锰氮不锈钢在稀硫酸介质中腐蚀磨损性能的影响", 《中国稀土学报》 * |
| 张霞等: "《无机化学》", 31 August 2015, 北京：冶金工业出版社 * |
| 王爱珍: "《钣金表面技术》", 31 August 2008, 北京：机械工业出版社 * |
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