CN107716865A - A kind of method for carrying out surface recombination to base steel material using lost foam casting - Google Patents
A kind of method for carrying out surface recombination to base steel material using lost foam casting Download PDFInfo
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- CN107716865A CN107716865A CN201710942562.1A CN201710942562A CN107716865A CN 107716865 A CN107716865 A CN 107716865A CN 201710942562 A CN201710942562 A CN 201710942562A CN 107716865 A CN107716865 A CN 107716865A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
- B22C9/046—Use of patterns which are eliminated by the liquid metal in the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/18—Measures for using chemical processes for influencing the surface composition of castings, e.g. for increasing resistance to acid attack
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- 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
- B22F3/23—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces involving a self-propagating high-temperature synthesis or reaction sintering step
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Abstract
The invention discloses a kind of method for carrying out surface recombination to base steel material using lost foam casting.The self-propagating reaction powder for being used for lost foam casting and surface recombination being carried out to base steel material used, including iron scale, titanium dioxide, aluminium powder, 30 titanium-iron powders, graphite carbon dust, borax.Self-propagating reaction powder is prepared into prefabricated section to be added in foamed model, coating is applied in foamed model surface, is placed in after drying in special sandbox, inserts dry sand, three-dimensional vibrating consolidation, vacuumize and cast under state, model gasification disappears, metal replacement model, copy the casting as foamed mould, vacuum is discharged after condensation, casting is taken out from loose sand, carries out next circulation.The hardness that base steel material surface forms composite bed is improved, alloy material usage amount is greatly decreased, reduces work pieces process cost.
Description
Technical field
The invention belongs to lost foam casting field, and in particular to a kind of to carry out surface to base steel material using lost foam casting
Compound method.
Background technology
Lost foam casting (abbreviation EPC) is a kind of Near net shape, is precisely formed and easily realizes the new technology of clean manufacturing,
And one integrate plastics, chemical industry, machinery, casting synthesis Hang Duo sections casting technology system engineering.From 80 years
Just, after the failure of Smith evaporative pattern casts patent, EPC technologies start extensive use and industrial production, especially in automobile
Development at full speed is obtained in industry, the product produced is by aluminium alloy castings (such as inlet manifold, gray iron) and cast iron
Part (such as bent axle, cylinder cap, gear box casing, blast pipe).
Lost foam casting is to bond the paraffin similar to casting dimension shape or bubbles model to be combined into model cluster, is brushed
After fireproof coating and drying, vibration molding in drystone sand is embedded in, is poured into a mould under negative pressure, model is gasified, liquid metals occupies
Modal position, the casting method of casting is formed after solidification cooling.Its technical process is as shown in Figure 1.
Using hard particles (TiC, Al of lost foam casting enhancing phase2O3Deng) poor, the mesh with the aluminium alloy wetability of cast
Preceding surface strengthening technology mainly has plating, multicomponent thermochemical treatment, thermal spraying, laser melting coating etc., and the coating obtained with single casting infiltration is deposited
Thickness is shallower, metallurgical binding transition region is narrower, and casting flaw is more the problems such as, and coating and the difference of matrix physical property
Different, crackle often germinates and developed at the interface cohesion of coating and matrix, so as to cause the fragmentation of coating and peeling.
Self-propagating high-temperature synthesis is to provide necessary energy induction thermal chemical reaction using outside, forms combustion wave, this
Reaction afterwards can continue in the case where the heat reacted before is supported, reaction sprawling forms required material after terminating.Using
Self- propagating method prepares the ceramics particle strengthened layer of reactive cladding in metal surface, without outside resources；Product is in-situ preparation,
The pollution in the external world is avoided with being mingled with, ensure that mechanics and physical property；High exothermic temperature causes product to be melt, cladding in
Metal surface ensures the compactness and the bond strength of strengthening layer and matrix of coating, while saves the energy, reduces production cost,
Production efficiency is improved, suitable for industrialized mass production.
The content of the invention
Chinese patent (Application No. CN201510236852.5) discloses surface particles reinforced composite material, using oxidation
Iron powder (or cupric oxide powder), aluminium powder, titanium valve and graphite powder carry out self-propagating reaction in matrix surface as self-propagating reaction powder
Surface particles reinforced composite material is obtained, but the hardness for detecting the surface particles reinforced composite material obtained only has HRC30-
40, hardness is relatively low.
In order to solve the deficiencies in the prior art, an object of the present invention is to provide a kind of lost foam casting that is used for base steel
Material carry out surface recombination self-propagating reaction powder, including iron scale, titanium dioxide, aluminium powder, 30 titanium-iron powders, graphite carbon dust,
Borax.
The self-propagating reaction powder that the present invention uses contains iron scale, and molten steel can cause self-propagating reaction powder when injecting
In graphite powdered carbon and aluminium powder burn, the main component in iron scale is Fe2O3、Fe3O4And FeO, in graphite powdered carbon and aluminium powder
Graphite powdered carbon and Fe can be caused in combustion process2O3、Fe3O4Reduction reaction is carried out with FeO, further produces heat, so that from
Prefabricated section prepared by sprawling reaction powder carries out surface recombination with base steel material, and forming one layer in steel substrate surface contains special chemical
The composite bed of composition, the particle strengthening that chemical constitution is formed and dislocation strengthening tissue, hardness and anti-wear performance are improved so as to reach
Purpose.
The borax that the present invention uses is act as, and 1. remove alloyed powder particle surface oxide-film and improve alloyed powder and molten steel
Between wetability.2. being used as surfactant, the surface tension of molten steel is reduced, so as to improve casting quality layer.
30 titanium-iron powder costs are relatively low, wherein can obtain meeting effect by reaction, so as to reach optimum state, iron oxide is made
The heat required for reaction is provided for the strong oxidizer in prefabricated section.Iron scale sorting price is cheaper, can provide more
Reaction required for heat.
The second object of the present invention is to provide a kind of lost foam casting that is used for and carries out the prefabricated of surface recombination to base steel material
Block, prepared by above-mentioned self-propagating reaction powder.
The third object of the present invention is to provide a kind of lost foam casting that is used for and carries out the foamed of surface recombination to base steel material
Model, above-mentioned prefabricated section is provided with the foamed model.
The fourth object of the present invention is to provide a kind of method for carrying out surface recombination to base steel material using lost foam casting,
Using above-mentioned self-propagating reaction powder, above-mentioned prefabricated section or above-mentioned foamed model, molten steel is passed through using lost foam casting process
SHS process, the composite bed of particle strengthening and dislocation strengthening tissue is formed in base steel material surface recombination.
The fifth object of the present invention is to provide a kind of above-mentioned self-propagating reaction powder, above-mentioned prefabricated section, above-mentioned foamed model
Or application of the above method in casting workpiece.Alloy material usage amount is greatly decreased, reduces work pieces process cost.
Beneficial effects of the present invention are：
The method of the present invention is a kind of heat using molten steel when casting, and the foamed model processed is fixed on into die cavity
Interior, after pouring molten steel enters die cavity, molten steel aoxidizes the metal that prefabricated section contains in foamed model, and is reacted with synthetics, enters
After row series of chemical, prefabricated section and base steel material carry out surface recombination, base steel material surface formed one layer mainly by
The composite bed of particle strengthening and dislocation strengthening tissue, can by this method so as to reach the purpose for improving hardness and anti-wear performance
To prepare various composite surface materials, make metalwork existing good mechanical performance such as toughness and ductility, but also with certain
Intensity and wearability；And it is only compound in surface progress, alloy material usage amount is greatly decreased, reduces work pieces process cost.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrate be used for explain the application, do not form the improper restriction to the application.
Fig. 1 is the technical process figure of lost foam casting；
Fig. 2 is the foamed model of a kind of workpiece prepared by the present invention, wherein, the material of a parts is polystyrene foam plastics
(EPS), b is the prefabricated section that the present invention is prepared using self-propagating reaction powder；
Fig. 3 is the schematic diagram for the pouring molten steel system that the present invention uses；
Fig. 4 is lost foam casting apparatus sketch, wherein, 1. water-ring vacuum pumps, 2. water inlet pipes, 3. steam-water separators, 4.
Return pipe, 5. exhaust tubes, 6. point contact type vacuum meters, 7. pressure regulator valves, 8. control valves, 9. negative pressure of vacuum tanks, 10. bellowss, 11.
Plain bumper, 12.EPC special shape mo(u)lding boxs；
Fig. 5 is the micro-hardness testing curve of workpiece prepared by the present invention；
Fig. 6 is ESEM (SEM) photo of the particle strengthening of workpiece composite bed prepared by the present invention, wherein, left figure is
The SEM photograph shot using back scattering electronic detector, right figure are the SEM photograph shot using secondary electron detector；
Fig. 7 is ESEM (SEM) photo that the dislocation of workpiece composite bed prepared by the present invention is strengthened, wherein, left figure is
The SEM photograph shot using back scattering electronic detector, right figure are the SEM photograph shot using secondary electron detector.
Embodiment
It is noted that described further below is all exemplary, it is intended to provides further instruction to the application.It is unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
Prefabricated section of the present invention is ready-made blocks.
Foamed model of the present invention is the foamed model on ordinary meaning in lost foam casting field, also referred to as foamed
Mould, its material are polystyrene foam plastics (EPS), polymethyl methacrylate (PMMA), foaming copolymer (EPS-
PMMA), poly- alkylene carbonic ester (PVC) or polypropylene (PP) etc..
As background technology is introduced, exist in the prior art using brown iron oxide (or cupric oxide powder), aluminium powder, titanium valve
And the deficiency that the hardness of surface particles reinforced composite material that is prepared as self-propagating reaction powder of graphite powder is relatively low, in order to solve
As above technical problem, present applicant proposes a kind of method for carrying out surface recombination to base steel material using lost foam casting.
A kind of exemplary embodiment of the application, there is provided one kind is used for lost foam casting and answered base steel material progress surface
The self-propagating reaction powder of conjunction, including iron scale, titanium dioxide, aluminium powder, 30 titanium-iron powders, graphite carbon dust, borax.
The self-propagating reaction powder that the present invention uses contains iron scale, and molten steel can cause self-propagating reaction powder when injecting
In graphite powdered carbon and aluminium powder burn, the main component in iron scale is Fe2O3、Fe3O4And FeO, in graphite powdered carbon and aluminium powder
Graphite powdered carbon and Fe can be caused in combustion process2O3、Fe3O4Reduction reaction is carried out with FeO, further produces heat, so that from
Prefabricated section prepared by sprawling reaction powder carries out surface recombination with base steel material, and forming one layer in steel substrate surface contains special chemical
The composite bed of composition, the particle strengthening that chemical constitution is formed and dislocation strengthening tissue, hardness and anti-wear performance are improved so as to reach
Purpose.
The borax that the present invention uses is act as, and 1. remove alloyed powder particle surface oxide-film and improve alloyed powder and molten steel
Between wetability.2. being used as surfactant, the surface tension of molten steel is reduced, so as to improve casting quality layer.
In order to increase the bond properties of self-propagating reaction powder, the application is preferable, including binding agent.In order to reduce bonding
Influence of the agent to base steel material surface recombination, the application is it is further preferred that the binding agent uses synthetic resin.
Iron scale, titanium dioxide, aluminium powder+graphite powdered carbon, 30 titanium-iron powder ratios are 3.5~4:1.5~2.5:1.5~2.5:
0.5~1, the addition quality of borax is iron scale, titanium dioxide, aluminium powder, graphite powdered carbon, 30 titanium-iron powder gross masses 4 ±
0.5%, the addition quality of synthetic resin is iron scale, titanium dioxide, aluminium powder, graphite powdered carbon, 30 titanium-iron powder gross masses 8 ±
0.5%.
Wherein, aluminium powder+graphite powdered carbon represents the mixture of aluminium powder and graphite powdered carbon.
The another embodiment of the application, there is provided one kind is used for lost foam casting and carries out surface recombination to base steel material
Prefabricated section, prepared by above-mentioned self-propagating reaction powder.
In order to the low melting point contained in iron scale volatile matter be removed, it is necessary to which iron scale is dried, but dries
During dry, in order to increase the speed of drying, inevitably need to raise temperature, and temperature raises, drying time is long
Necessarily cause the further oxidation of iron scale, so as to reduce the content of iron scale oxide composition, finally influence base steel
Material carries out the performance of surface composite layer, thus the application is preferable, and drying temperature is 500~600 DEG C, and drying time is 60 ±
10s。
Ferrous oxide is easier to be reduced agent reduction than ferroso-ferric oxide, discharges more heats.Therefore, it is necessary to oxidation
Iron sheet carries out protectiveness drying.
Borax contains the crystallization water, and in order to which the crystallization water in borax is removed, the application is preferable, and borax removes the crystallization water
300 ± 10 DEG C of heating-up temperature, heat time are 2~3min.
Contain low melting point volatile matter in iron scale, heating (500~600 DEG C) removes low melting point volatilization for one minute or so
Thing, while its oxidation is prevented, nitrogen charging processing is carried out in heating furnace.
Because aluminium powder and graphite powdered carbon easily aoxidize in atmosphere, so without aluminium powder and graphite powdered carbon are dried.
The step of preparing the prefabricated section be：By iron scale, titanium dioxide, aluminium powder, 30 titanium-iron powders, graphite carbon dust and borax
It is well mixed, add binding agent and be well mixed, prevent binding agent from influenceing iron scale, titanium dioxide, aluminium powder, 30 titanium-iron powders, stone
The mixing of black carbon dust and borax, the material after binding agent is well mixed will be added and be pressed into briquet, by drying prefabricated section.
In order to which iron scale, titanium dioxide, aluminium powder, 30 titanium-iron powders, graphite carbon dust and borax are well mixed, the application uses
Grinder is ground, and milling time is 3~5min, ratio of grinding media to material 3:1.
In order to will add binding agent it is well mixed after material be pressed into briquet, the pressure of the application pressed compact for 40 ±
5MPa。
In order to which prefabricated section can be preferably incorporated on foamed model, the drying temperature of the application briquet is 90~100
DEG C, drying time is 24 ± 1h.
Another exemplary embodiment of the application, as shown in Figure 2, there is provided one kind is used for lost foam casting to steel substrate
Material carries out the foamed model of surface recombination, and above-mentioned prefabricated section b is provided with the foamed model.The material of the foamed model of the application is gathered
Styrofoam (EPS), polymethyl methacrylate (PMMA), foaming copolymer (EPS-PMMA), poly- alkylene carbonic acid
Ester (PVC) or polypropylene (PP) etc., because using EPS, molten steel filling velocity is very fast, can accelerate the casting speed of workpiece, because
And the material of the foamed model a parts of the application is preferably EPS.
It is currently preferred in order to control the speed that molten steel fills, the foamed model surface coating fireproof coating.
Refractory material selects alcohol zircon flour coating, the coating used for conventional cast.Coating characteristic：Suspension stability
It is good, there is excellent thixotropy and levelability, brushability is good, and coating is low without brush mark, content of organics, and gas forming amount is small, and coating is strong
Degree is high.Zirconium English powder has stronger Quench ability to casting, and anti-stick grittiness is good, can effectively prevent casting surface defect, cast(ing) surface
It is bright and clean, easy to clean.
The another embodiment of the application, there is provided a kind of that surface recombination is carried out to base steel material using lost foam casting
Method, using above-mentioned self-propagating reaction powder, above-mentioned prefabricated section or above-mentioned foamed model, passed through using lost foam casting process
The SHS process of molten steel, the composite bed of particle strengthening and dislocation strengthening tissue is formed in base steel material surface recombination.
This method is that self-propagating reaction powder or prefabricated section are added in foamed model, and spreading is applied in foamed model surface
Material, it is placed in after drying in special sandbox, inserts dry sand, three-dimensional vibrating consolidation, vacuumize and cast under state, model gasification disappears,
Metal replacement model, the casting as foamed mould is copied, discharges vacuum after condensation, casting is taken out from loose sand, enters
The next circulation of row.To strengthen the hardness of casting workpiece.The running gate system that it is used is as shown in Figure 3.
In order to improve the casting speed of workpiece, the casting process parameters that lost foam casting process of the present invention uses for：
1600 ± 10 DEG C of pouring temperature, cast initial vacuum degree are 0.06 ± 0.005MPa, during cast vacuum be 0.056~
0.058MPa, vacuum is 0.053~0.056MPa after cast, and the time vacuumized is 300 ± 10s.
Present invention also provides a kind of above-mentioned self-propagating reaction powder, above-mentioned prefabricated section, above-mentioned foamed model or above-mentioned side
Application of the method in casting workpiece.Alloy material usage amount is greatly decreased, reduces work pieces process cost.
In order that the technical scheme of the application can clearly be understood by obtaining those skilled in the art, below with reference to tool
The embodiment of body describes the technical scheme of the application in detail with comparative example.
Embodiment
The lost foam casting apparatus of use, as shown in figure 4, including water-ring vacuum pump 1, steam-water separator 3, negative pressure of vacuum
Tank 9, plain bumper 11 and EPC special shape mo(u)lding boxs 12.Water-ring vacuum pump 1, steam-water separator 3, water inlet pipe 2 and return pipe 4 are formed and followed
Ring water loop so that water-ring vacuum pump 1 is vacuumized by exhaust tube 5 to negative pressure of vacuum tank 9, and negative pressure of vacuum tank 9 passes through ripple
Pipe 10 connects EPC special shape mo(u)lding boxs 12, and point contact type vacuum meter 6 monitors the vacuum in negative pressure of vacuum tank 9, and passes through control valve 8
The vacuum in negative pressure of vacuum tank 9 is controlled with pressure regulator valve 7, plain bumper 11 produces mechanical oscillation to dry in EPC special shape mo(u)lding boxs 12
Sand produces three-dimensional vibrating.
The composition of alloy powder in the self-propagating reaction powder of use is as shown in table 1,
The composition of the alloy powder of table 1
Iron scale, titanium dioxide, aluminium powder and the mixture of graphite powdered carbon, the mass ratio of 30 titanium-iron powders are 4:2:2:1, its
In, the mass ratio of aluminium powder and graphite powdered carbon is 1:1.
Other materials in self-propagating reaction powder：
(1) borax
Add alloy powder 4wt% borax.
The effect of borax：
A. the wetability between alloyed powder particle surface oxide-film and improvement alloyed powder and molten steel is removed.
B. it is used as surfactant, reduces the surface tension of molten steel, so as to improves casting quality layer.
(2) from synthetic resin as binding agent.(addition alloy powder 8wt% binding agent)
The base steel material used is as shown in table 2 for No. 45 steel, the chemical composition of No. 45 steel.
The chemical composition of 2 No. 45 steel of table
Operating procedure
Iron scale and borax contain low melting point volatile matter using independent heating, drying is preceding needed in iron scale, heating
(500~600 DEG C) one minute or so, heating-up temperature is too high, and overlong time can aggravate its oxidation；Borax contains the crystallization water, heating
300 DEG C or so of temperature, 2~3min fully removes the crystallization water.30 titanium-iron powders are slightly dried, and remove low melting point volatile matter, are prevented simultaneously
Only it is aoxidized；Aluminium powder, graphite carbon dust are not easy to dry in atmosphere, oxidizable.
By the dried powder of formula capacity of balance, with KM-1 speed mullers (1400r/min), 3~5min is ground,
Ratio of grinding media to material is 3:1 (abrading-ball is zircon English).Appropriate binding agent is added in mixed uniformly powder, is well mixed, is pulled with SB hands
Formula sampling machine is pressed into 15 × 10mm briquet, compacting pressure 40MPa.Briquet carries out drying (90 DEG C~100 DEG C) in 24 hours
After be bonded in EPS modules, it is outer painting alcohol zircon flour coating after low temperature drying (≤50 DEG C) be prepared into foamed model within 1 day.
Foamed model is placed in special sandbox, dry sand is inserted, three-dimensional vibrating consolidation, vacuumizes and cast under state, model
Gasification disappears, and metal replacement model, copies the casting as foamed mould, discharges vacuum after condensation, taken from loose sand
Go out casting, carry out next circulation.
The negative pressure technological parameter of cast is as shown in table 3.
The negative pressure technological parameter that table 3 is poured into a mould
Part can be as the main of the compound of enhancing phase particle in the chemical composition of cast(ing) surface composite bed after preparation
Shown in parameter list 4.
The part of table 4 can be as the major parameter of the compound of enhancing phase particle
The casting of preparation is subjected to surface composite layer micro-hardness testing, its testing result is as shown in Fig. 5~7.
Fig. 5 shows that the hardness of cast(ing) surface composite bed reaches as high as 900HV.
Fig. 6~7 show, pass through the composite surface material dislocation strengthening and particle strengthening positive effect of the method preparation, energy
The hardness and wearability of base material are effectively improved, can effectively reduce the processing cost of workpiece.
Comparative example 1
The method of this comparative example is identical with embodiment, and difference is, the self-propagating reaction powder that this comparative example uses
For：Croci, aluminium powder, titanium valve, graphite powder, its mass ratio are 4:4:4:1, the casting cast using the self-propagating reaction powder
The hardness of part surface composite layer only has 400HV.
Comparative example 2
The method of this comparative example is identical with embodiment, and difference is, 30 titanium-iron powders are replaced with 40 titaniums by this comparative example
Iron powder, the hardness using the cast(ing) surface composite bed of self-propagating reaction powder casting only have 500HV.
The preferred embodiment of the application is the foregoing is only, is not limited to the application, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of self-propagating reaction powder for carrying out surface recombination to base steel material for lost foam casting, it is characterized in that, including
Iron scale, titanium dioxide, aluminium powder, 30 titanium-iron powders, graphite carbon dust, borax.
2. self-propagating reaction powder as claimed in claim 1, it is characterized in that, iron scale, titanium dioxide, aluminium powder+graphite powdered carbon,
30 titanium-iron powder ratios are 3.5~4:1.5~2.5:1.5~2.5:0.5~1, the addition quality of borax is iron scale, titanium white
Powder, aluminium powder, graphite powdered carbon, the 4 ± 0.5% of 30 titanium-iron powder gross masses；
Or, including binding agent, it is preferred that the addition quality of binding agent is iron scale, titanium dioxide, aluminium powder, graphite powdered carbon, 30 titaniums
The 8 ± 0.5% of iron powder gross mass.
3. a kind of prefabricated section for carrying out surface recombination to base steel material for lost foam casting, it is characterized in that, by claim 1 or
Self-propagating reaction powder described in 2 prepares.
4. prefabricated section as claimed in claim 3, it is characterized in that, the drying temperature of iron scale is 500~600 DEG C, during drying
Between be 60 ± 10s；
Or, borax removes 300 ± 10 DEG C of the heating-up temperature of the crystallization water, the heat time is 2~3min.
5. prefabricated section as claimed in claim 3, it is characterized in that, the step of preparing the prefabricated section is：By iron scale, titanium white
Powder, aluminium powder, 30 titanium-iron powders, graphite carbon dust and borax are well mixed, and are added binding agent and are well mixed, and prevent binding agent from influenceing oxygen
Change the mixing of iron sheet, titanium dioxide, aluminium powder, 30 titanium-iron powders, graphite carbon dust and borax, the material after binding agent is well mixed will be added
Briquet is pressed into, by drying prefabricated section.
6. a kind of foamed model for carrying out surface recombination to base steel material for lost foam casting, it is characterized in that, the foamed mould
Any described prefabricated section of claim 3~5 is provided with type.
7. foamed model as claimed in claim 6, it is characterized in that, institute's foamed model surface coating fireproof coating.
8. a kind of method for carrying out surface recombination to base steel material using lost foam casting, it is characterized in that, using claim 1 or
Foamed mould described in any described prefabricated section of self-propagating reaction powder described in 2, claim 3~5 or claim 6 or 7
Type, the SHS process using lost foam casting process by molten steel, particle strengthening is formed in base steel material surface recombination
And the composite bed of dislocation strengthening tissue.
9. method as claimed in claim 8, it is characterized in that, the casting process parameters that the lost foam casting process uses for：
1600 ± 10 DEG C of pouring temperature, cast initial vacuum degree are 0.06 ± 0.005MPa, during cast vacuum be 0.056~
0.058MPa, vacuum is 0.053~0.056MPa after cast, and the time vacuumized is 300 ± 10s.
10. any described prefabricated section of the self-propagating reaction powder described in a kind of claim 1 or 2, claim 3~5, right
It is required that application of the method described in foamed model, claim 8 or 9 described in 6 or 7 in casting workpiece.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108817310A (en) * | 2018-06-27 | 2018-11-16 | 山西中条山机电设备有限公司 | Coating and preparation method are seeped in a kind of casting |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103302267A (en) * | 2013-06-04 | 2013-09-18 | 江苏蓝日超硬钢材料有限公司 | Preparation method of on-site synthesized TiB2+TiC two-phase particle-reinforced steel matrix surface wear-resistant extra hard steel and extra hard steel |
| CN104942268A (en) * | 2015-05-11 | 2015-09-30 | 北京科技大学 | Preparation method of copper-based titanium carbide/aluminum oxide surface particle strengthening composite material |
| RU2612476C1 (en) * | 2015-10-19 | 2017-03-09 | Общество с ограниченной ответственностью "Инновационные технологии" | Casts surface alloying method for iron-carbon alloys |
| RU2612864C1 (en) * | 2015-10-19 | 2017-03-13 | Общество с ограниченной ответственностью "Инновационные технологии" | Surface alloying method for iron-carbon alloy castings |
-
2017
- 2017-10-11 CN CN201710942562.1A patent/CN107716865A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103302267A (en) * | 2013-06-04 | 2013-09-18 | 江苏蓝日超硬钢材料有限公司 | Preparation method of on-site synthesized TiB2+TiC two-phase particle-reinforced steel matrix surface wear-resistant extra hard steel and extra hard steel |
| CN104942268A (en) * | 2015-05-11 | 2015-09-30 | 北京科技大学 | Preparation method of copper-based titanium carbide/aluminum oxide surface particle strengthening composite material |
| RU2612476C1 (en) * | 2015-10-19 | 2017-03-09 | Общество с ограниченной ответственностью "Инновационные технологии" | Casts surface alloying method for iron-carbon alloys |
| RU2612864C1 (en) * | 2015-10-19 | 2017-03-13 | Общество с ограниченной ответственностью "Инновационные технологии" | Surface alloying method for iron-carbon alloy castings |
Non-Patent Citations (2)
| Title |
|---|
| 程瑶: "原位合成Al2O3-TiC颗粒增强45#钢基表面复合材料的研究", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
| 程瑶等: "Ti-Fe粉对颗粒增强45钢基表面复合材料复合层质量及组织的影响", 《内蒙古科技大学学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108817310A (en) * | 2018-06-27 | 2018-11-16 | 山西中条山机电设备有限公司 | Coating and preparation method are seeped in a kind of casting |
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