CN110090917A - A kind of iron base composite material method for casting and seeping coating, preparation method and casting impregnation coating using its preparation - Google Patents
A kind of iron base composite material method for casting and seeping coating, preparation method and casting impregnation coating using its preparation Download PDFInfo
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- CN110090917A CN110090917A CN201910300628.6A CN201910300628A CN110090917A CN 110090917 A CN110090917 A CN 110090917A CN 201910300628 A CN201910300628 A CN 201910300628A CN 110090917 A CN110090917 A CN 110090917A
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- 238000000576 coating method Methods 0.000 title claims abstract description 110
- 239000011248 coating agent Substances 0.000 title claims abstract description 109
- 238000005266 casting Methods 0.000 title claims abstract description 75
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 239000002131 composite material Substances 0.000 title claims abstract description 52
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000005470 impregnation Methods 0.000 title claims abstract description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910000604 Ferrochrome Inorganic materials 0.000 claims abstract description 34
- 239000000843 powder Substances 0.000 claims abstract description 34
- 239000000725 suspension Substances 0.000 claims abstract description 31
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 claims abstract description 27
- 229920005989 resin Polymers 0.000 claims abstract description 25
- 239000011347 resin Substances 0.000 claims abstract description 25
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 25
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000005011 phenolic resin Substances 0.000 claims abstract description 21
- 239000002904 solvent Substances 0.000 claims abstract description 19
- 229960000935 dehydrated alcohol Drugs 0.000 claims abstract description 17
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims abstract description 13
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims abstract description 13
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims abstract description 13
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 22
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N Butyraldehyde Chemical compound CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 102000004895 Lipoproteins Human genes 0.000 claims description 2
- 108090001030 Lipoproteins Proteins 0.000 claims description 2
- 238000013461 design Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 claims description 2
- 238000007711 solidification Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims 1
- 235000011613 Pinus brutia Nutrition 0.000 claims 1
- 241000018646 Pinus brutia Species 0.000 claims 1
- 239000004372 Polyvinyl alcohol Substances 0.000 claims 1
- LCDFWRDNEPDQBV-UHFFFAOYSA-N formaldehyde;phenol;urea Chemical compound O=C.NC(N)=O.OC1=CC=CC=C1 LCDFWRDNEPDQBV-UHFFFAOYSA-N 0.000 claims 1
- 229920002451 polyvinyl alcohol Polymers 0.000 claims 1
- 238000010298 pulverizing process Methods 0.000 claims 1
- HGBOYTHUEUWSSQ-UHFFFAOYSA-N valeric aldehyde Natural products CCCCC=O HGBOYTHUEUWSSQ-UHFFFAOYSA-N 0.000 claims 1
- 230000035699 permeability Effects 0.000 abstract description 8
- 230000008859 change Effects 0.000 abstract description 6
- 238000010408 sweeping Methods 0.000 abstract description 5
- 230000008595 infiltration Effects 0.000 description 19
- 238000001764 infiltration Methods 0.000 description 19
- 229960004756 ethanol Drugs 0.000 description 11
- 235000019441 ethanol Nutrition 0.000 description 11
- 239000002245 particle Substances 0.000 description 9
- 230000007547 defect Effects 0.000 description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 6
- 229910052804 chromium Inorganic materials 0.000 description 6
- 239000011651 chromium Substances 0.000 description 6
- 229910000278 bentonite Inorganic materials 0.000 description 5
- 239000000440 bentonite Substances 0.000 description 5
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 5
- 230000002708 enhancing effect Effects 0.000 description 5
- 244000035744 Hura crepitans Species 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000001680 brushing effect Effects 0.000 description 4
- 238000009749 continuous casting Methods 0.000 description 4
- 229920003987 resole Polymers 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 206010039509 Scab Diseases 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910001338 liquidmetal Inorganic materials 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 229910000599 Cr alloy Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000000788 chromium alloy Substances 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920013657 polymer matrix composite Polymers 0.000 description 2
- 239000011160 polymer matrix composite Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- HPNSNYBUADCFDR-UHFFFAOYSA-N chromafenozide Chemical compound CC1=CC(C)=CC(C(=O)N(NC(=O)C=2C(=C3CCCOC3=CC=2)C)C(C)(C)C)=C1 HPNSNYBUADCFDR-UHFFFAOYSA-N 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003110 molding sand Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- RCHKEJKUUXXBSM-UHFFFAOYSA-N n-benzyl-2-(3-formylindol-1-yl)acetamide Chemical compound C12=CC=CC=C2C(C=O)=CN1CC(=O)NCC1=CC=CC=C1 RCHKEJKUUXXBSM-UHFFFAOYSA-N 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
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- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000000375 suspending agent Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses a kind of castings of iron base composite material to seep coating, preparation method and the method for preparing casting impregnation coating using it, it includes following component that coating is seeped in the casting: rosin resin 1.8-2.2%, phenolic resin 0.9-1.1%, polyvinyl butyral 0.4-0.6%, organobentonite 1.0-1.5%, solvent naphtha 4.0-6.0%, silicon carbide 11-13%, ferrochrome powder 8-12%, surplus are dehydrated alcohol.The advantages of coating is seeped in iron base composite material prepared by the present invention casting, has suspension good, and intensity is high, good permeability, good leveling property, while the moderate viscosity of coating, have good brushability.Through detecting, it is 99.9% or more that viscosity, which is 0.057 or more, 2h suspension with the change rate of revolving speed, and suspension is up to 87.6% or more for 24 hours, and the knockout amount of sweeping away is up to 0.14 or more, and for gas permeability up to 2.0 or more, levelability reaches 510mm or more.
Description
Technical field
The present invention relates to the casting of technical field of coatings more particularly to a kind of iron base composite material seep coating, preparation method and
The method for preparing casting impregnation coating using it.
Background technique
Composite material is made of two or more material, and usually the two property is completely different, and forming properties are complementary
State, be finally subject to optimum organization composition a kind of material.According to the difference of basis material, composite material is usually divided into three
Class, respectively polymer matrix composites (PMC), metal-base composites (MMCs), ceramic matric composite (CMC).With other
Composite material is compared, and metal-base composites relies on its high intensity, high elastic modulus, good high-temperature behavior and fatigue resistance
The advantages that energy, good wearability and dimensional stability, becomes the hot spot of people's research in recent years.
Casting infiltration is the important method for preparing composite material, and casting infiltration is that alloy powder or ceramic particle etc. is solid in advance
It is scheduled on mo(U)ld face, so that high-temperature liquid metal is penetrated into coating micropore by casting, make it dissolve to be formed and had in cast(ing) surface
There is a kind of surface treatment of the casting infiltration layer of particular tissues and performance and technique that molding combines.The casting infiltration layer one that casting infiltration obtains
As all have the properties such as wear-resisting, corrosion-resistant, high temperature resistant.The quality of casting infiltration layer directly affects the performance of composite material, again
Because of an important factor for quality for casting the coating of infiltration layer is its performance of influence, the coating for casting infiltration layer is its core.But
Coating is seeped in general casting, and there are defects below: it is typically all high desnity metal particle that coating is seeped in casting, and specific gravity is larger, is easily precipitated,
It is unfavorable for making coating that there is good heat resistance, suspension, brushability, adhesion and levelability, meeting when iron liquid or molten steel are poured
It washes away casting and seeps coating, while cast(ing) surface casting infiltration layer thickness ununiformity is even；It is unfavorable for coating and wear-resisting type is transformed by heat resistant type, it is inconvenient
In obtaining surface recombination type coating of good performance；Therefore designing a kind of casting that can overcome drawbacks described above to seep coating is that have very much must
It wants.
Summary of the invention
The heat resistance of coating, suspension, brushability, adhesion are seeped for casting in the prior art and levelability is poor asks
Topic, the present invention are provided a kind of casting of iron base composite material and seep coating, preparation method and the method for being cast impregnation coating using its preparation.
In order to solve the above technical problems, present invention provide the technical scheme that
A kind of iron base composite material casting infiltration coating, the raw material components including following mass percent: rosin resin 1.8-
2.2%, phenolic resin 0.9-1.1%, polyvinyl butyral 0.4-0.6%, organobentonite 1.0- 1.5%, solvent naphtha
4.0-6.0%, silicon carbide 11-13%, ferrochrome powder 8-12%, surplus is dehydrated alcohol.
Compared with the existing technology, coating is seeped in iron base composite material provided by the invention casting, by each substance comprehensive function,
So that the advantages of coating has suspension good, and intensity is high, good permeability, good leveling property, while the moderate viscosity of coating, have good
Good brushability.Through detecting, viscosity is with the change rate of revolving speed up to 0.060 hereinafter, 2h suspension is up to 99.9% or more, for 24 hours
Suspension is up to 87.6% or more, and the knockout amount of sweeping away is up to 0.15 hereinafter, gas permeability is up to 2.0 or more, and levelability is up to 510mm
More than；By pouring experiment, coating can be effectively in conjunction with basis material, and surface quality of continuous castings is good, meets requirement.
Wherein, rosin resin and phenolic resin are used in compounding at a specific ratio as adhesive, can make coating have compared with
High viscosity is not broken up in high-temperature liquid metal casting so that coating is firmly attached on type wall, avoids the occurrence of scab, hair
The defects of thorn and deformation, meanwhile, select rosin resin and phenolic resin compounding, and both preferred additional amount, it is ensured that
After casting of molten metal can full combustion, gasification, do not stay residue, do not form cavity, and the energy after coating is dry in dope layer
The intensity for enough enhancing coating, avoids coating shedding or cracking；Organobentonite will not be substantially reduced silicon carbide as suspending agent
With the refractoriness of ferrochrome powder, and send out gas forming amount it is low, be conducive to improve casting quality；Polyvinyl butyral as thickener,
The suspension and viscosity of coating can be improved rapidly, and makes coating cohesiveness still with higher under low-temperature condition, by organic
The coordinated of bentonite and polyvinyl butyral effectively increases suspension of the enhancing particle in coating, so that coating
With preferable low temperature intensity.And the additional amount of ferrochrome powder be 8-12% when, be conducive to when be poured high-temperature liquid metal increase painting
Wetability between material and molten metal, is conducive to carbofrax strengthening particle and is dispersed in the composite layer of cast(ing) surface, thus
Improve the wearability of surface quality of continuous castings and casting.
Preferably, the phenolic resin is resol.
Preferred phenolic resin and rosin resin are cooperated with special ratios, and coating can be made to have suitable viscosity, so that
Also silicon carbide and ferrochrome powder in coating can be made closely to be bonded together under long period high temperature, guarantee coating on molding sand surface
Be coated with and strength of coating, the continuous high temperature for resisting molten steel wash away, prevent molten steel from directly contacting with sand mold and cause scab defect, from
And guarantee the surface quality of casting.
Preferably, the solvent naphtha is 120# solvent naphtha.
120# solvent naphtha can make the abundant extruding of organobentonite, and good with the compatibility of dehydrated alcohol, can make organic swelling
Soil expansion effective in ethanol, ensure that the stability of organobentonite suspension colloid；And preferred 120# solvent naphtha
Additional amount is conducive to the viscosity and colloidity that improve organobentonite dispersion colloid in ethanol, and ensure that hair when burning
It is dry to be conducive to coating for heat.
Preferably, the granularity of the silicon carbide is 70-100 mesh.
Preferably, the ferrochrome powder is low-carbon ferrochromium, and chromium content 22-26%, granularity is 100-250 mesh.
The wetability that each component in casting of molten metal (high-chromium alloy liquid) and coating can be enhanced using preferred ferrochrome powder, is obtained
Obtain the good casting of surface quality.
The granularity of preferred silicon carbide and ferrochrome powder, is conducive to molten metal and permeates into coating, increase the thickness of composite layer,
The fusing of two kinds of enhancing particles is also helped simultaneously.The ferrochrome powder of 100-250 mesh can enhance leaching of the metal mother liquid to enhancing particle
Profit effect, the ferrochrome powder of the silicon carbide of 80-100 mesh and 100-250 mesh is used in mixed way according to special ratios, can make ferrochrome powder portion
Divide the gap between the silicon-carbide particle of filling 70-100 mesh, and since the ferrochrome powder of 100-250 mesh can reinforce capillarity, because
This, ferrochrome powder is filled to after between silicon-carbide particle not but not blocking gap increases flow resistance, can play instead preferable
Capillarity promotes the infiltration of molten metal, improves the surface bond quality of composite layer.
The present invention also provides a kind of iron base composite material preparation method of casting infiltration coating, the preparation method is at least wrapped
Include following steps:
Step a weighs each component according to the design proportion that above-mentioned iron base composite material casts infiltration coating, by weighed phenolic aldehyde
Resin is added in the dehydrated alcohol of 4-7wt%, is uniformly mixed, obtains phenol resin solution, weighed rosin resin is pulverized
After be added in the phenol resin solution, be uniformly mixed, obtain resin solution；
Step b weighed polyvinyl butyral is added in the dehydrated alcohol of 2-5wt%, is uniformly mixed, obtains polyethylene
Butyral solution；
Weighed organobentonite is added in the solvent naphtha, stirs 8-10min by step c, be added 5- 10wt% without
Water-ethanol continues to stir 3-5min, obtains organobentonite suspension；
Step d the organobentonite suspension is added in the dehydrated alcohol of surplus, is uniformly mixed, sequentially adds institute
Resin solution, polyvinyl butyral solution are stated, is uniformly mixed, obtains first material；
Weighed silicon carbide and ferrochrome powder are uniformly mixed by step e, are added in the first material, are uniformly mixed, are obtained institute
It states iron base composite material casting and seeps coating.
Above-mentioned preparation method is easy to operate, no complicated procedures of forming, at low cost without special equipment, is suitble to industrialization big
The iron base composite material of large-scale production, preparation is strong with casting infiltration coating permeability, has good elevated temperature strength and stability, gets angry
It measures small, and there is good elevated temperature strength and stability, can effectively prevent molten steel and directly contact with sand mold and cause scab defect, tool
There is vast market prospect.
Preferably, in step c, the organobentonite is added in the solvent naphtha with the speed of 8-12g/min.
Preferably, in step c, mixing speed 150-200r/min.
Speed and mixing speed and mixing time is added in preferred bentonite, and organobentonite can be made sufficiently swollen
Change, and be highly dispersed in dehydrated alcohol, to ensure that ferrochrome powder and the evenly dispersed suspension of silicon carbide, it is good to assign coating
Thixotropy, improve brushing performance, improve the surface quality of coating and casting, simultaneously, moreover it is possible to it is steady to provide the good storage of coating
It is qualitative.Likewise it is preferred that mixing speed, under the premise of guaranteeing organobentonite abundant extruding, moreover it is possible to avoid generating excessive
Bubble improves the stability and brushability of coating.
The method that coating preparation casts impregnation coating is seeped using the casting of above-mentioned iron base composite material the present invention also provides a kind of,
It is characterized in that, at least includes the following steps:
The coating is coated in casting mold type chamber or whose surfaces, after 15-20min, lights coating, it is complete to coating burning
Afterwards, after the casting mold type chamber or whose surfaces the second coating of coating, 15-20min, burning coating material is put, after coating burning completely,
It will be in melted pouring metal melt to the type chamber or type core, after solidifying cooling, in cast(ing) surface up to the casting impregnation coating.
By specific coating, in conjunction with specific Infiltration technology, the coating suitable for iron base composite material is made, so that increasing
Strong particle (silicon carbide and ferrochrome powder) can be combined effectively between basis material, and the quality of gained cast(ing) surface is good, does not have
There is surface defect, cast(ing) surface is smooth, smooth, significantly improves the wear-resisting property and corrosion resistance of casting.
It is lighted again after coating is coated to casting mold type chamber or whose surfaces 15-20min, cast(ing) surface can be effectively improved
The quality of composite layer can make dope layer bubble occur if burning time is too early, influence the quality of coating；It lights too late, can make
Solvent excessively penetrates into sand mold or volatilization；Currently preferred burning time can ensure that strength of coating, improve surface quality of continuous castings.
Preferably, pouring temperature is 1420-1470 DEG C.
Preferably, pouring temperature is 1450 DEG C.
The defects of pouring temperature is too low, and the mobility of molten metal is deteriorated, and penetrating power reduces, and is also easy to produce slag inclusion, stomata,
It is unfavorable for the fusing of alloy coat, the thickness of composite coating is caused to reduce；Pouring temperature is excessively high, and molten metal is caused easily to break up painting
Layer, composite bed thickness, which is reduced, cannot even generate composite layer.Preferred pouring temperature, be conducive to molten metal to the infiltration of coating and
The melting of coating is decomposed, and the discharge of gas and field trash is also beneficial to, while the thickness of composite layer also can be improved and improve and increase
The distribution situation of strong particle.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Embodiment 1
The embodiment of the present invention provides a kind of iron base composite material casting infiltration coating, the raw material group including following mass percent
Point: rosin resin 1.8%, phenolic resin 1.1%, polyvinyl butyral 0.5%, organobentonite 1.0%, 120# solvent naphtha
5.0%, silicon carbide 11%, ferrochrome powder 10%, surplus is dehydrated alcohol.
Wherein, the granularity of silicon carbide is 80 mesh, and ferrochrome powder is low-carbon ferrochromium powder, chromium content 22-26%, granularity 200
Mesh.
Above-mentioned iron base composite material is as follows with the preparation step that coating is seeped in casting:
Step a prepares resin solution: weighed resol is added in the ethyl alcohol of 4wt%, stirs 3-
5min obtains phenol resin solution, after then weighed rosin resin rouge is pulverized, is added to 10g/min speed described
In phenol resin solution, dissolves 12 hours, obtain resin solution；
Step b prepares polyvinyl butyral (PVB) solution: 2wt% is added with 10g/min speed in weighed PVB
Ethyl alcohol in, stirring 10-20min dissolution, obtain PVB solution；
Step c prepares organic bentonite suspension: organobentonite being first added to the 120# weighed up with 10g/min speed
It in solvent naphtha, stirs 8-10 minutes, the ethyl alcohol stirring 3-5min of 5wt% is added, obtains organobentonite suspension；
Step d, under the stirring condition of 150r/min, by the organobentonite suspension with the speed of 20 ml/min
It is added in the dehydrated alcohol of surplus, continues to stir 3-5min after the completion of being added, the resin is added with the speed of 20ml/min
Solution, continues to stir 3-5min after the completion of being added, and the PVB solution is added with the speed of 20ml/min, continues after the completion of being added
3-5min is stirred, first material is obtained；
Weighed silicon carbide and ferrochrome powder are uniformly mixed by step e, are added to described first with the speed of 50-60g/min
In material, stop after mixing slowly until completion 5min is added, obtains the iron base composite material casting and seep coating.
Through detecting, it is 99.90% that viscosity, which is 0.059,2h suspension with the change rate of revolving speed, and suspension is for 24 hours
87.67%, the knockout amount of sweeping away is 0.14, gas permeability 2.02, levelability 510.31mm.
Embodiment 2
The embodiment of the present invention provides a kind of iron base composite material casting infiltration coating, the raw material group including following mass percent
Point: rosin resin 2.0%, phenolic resin 0.9%, polyvinyl butyral 0.4%, organobentonite 1.2%, 120# solvent naphtha
6.0%, silicon carbide 12%, ferrochrome powder 12%, surplus is dehydrated alcohol.
Wherein, the granularity of silicon carbide is 70 mesh, and ferrochrome powder is low-carbon ferrochromium powder, chromium content 22-26%, granularity 100
Mesh.
Above-mentioned iron base composite material is as follows with the preparation step that coating is seeped in casting:
Step a prepares resin solution: weighed resol is added in the ethyl alcohol of 5wt%, stirs 3-5min,
Phenol resin solution is obtained, after then weighed rosin resin rouge is pulverized, the phenolic aldehyde tree is added to 10g/min speed
In lipoprotein solution, dissolves 12 hours, obtain resin solution；
Step b prepares polyvinyl butyral (PVB) solution: 3wt% is added with 10g/min speed in weighed PVB
Ethyl alcohol in, stirring 10-20min dissolution, obtain PVB solution；
Step c prepares organic bentonite suspension: it is molten that organobentonite is first added to the 120# weighed up with 8g/min speed
It in agent oil, stirs 8-10 minutes, the ethyl alcohol stirring 3-5min of 7wt% is added, obtains organobentonite suspension；
Step d, under the stirring condition of 180r/min, by the organobentonite suspension with the speed of 20 ml/min
It is added in the dehydrated alcohol of surplus, continues to stir 3-5min after the completion of being added, the resin is added with the speed of 20ml/min
Solution, continues to stir 3-5min after the completion of being added, and the PVB solution is added with the speed of 20ml/min, continues after the completion of being added
3-5min is stirred, first material is obtained；
Weighed silicon carbide and ferrochrome powder are uniformly mixed by step e, are added to described first with the speed of 50-60g/min
In material, stop after mixing slowly until completion 5min is added, obtains the iron base composite material casting and seep coating.
Through detecting, it is 99.92% that viscosity, which is 0.060,2h suspension with the change rate of revolving speed, and suspension is for 24 hours
87.84%, the knockout amount of sweeping away is 0.15, gas permeability 2.03, levelability 510.34mm.
Embodiment 3
The embodiment of the present invention provides a kind of iron base composite material casting infiltration coating, the raw material group including following mass percent
Point: rosin resin 2.2%, phenolic resin 1.0%, polyvinyl butyral 0.6%, organobentonite 1.5%, 120# solvent naphtha
4.0%, silicon carbide 13%, ferrochrome powder 8%, surplus is dehydrated alcohol.
Wherein, the granularity of silicon carbide is 100 mesh, and ferrochrome powder is low-carbon ferrochromium powder, and chromium content is 22- 26%, and granularity is
250 mesh.
Above-mentioned iron base composite material is as follows with the preparation step that coating is seeped in casting:
Step a prepares resin solution: weighed resol is added in the ethyl alcohol of 7wt%, stirs 3-
5min obtains phenol resin solution, after then weighed rosin resin rouge is pulverized, is added to 10g/min speed described
In phenol resin solution, dissolves 12 hours, obtain resin solution；
Step b prepares polyvinyl butyral (PVB) solution: 5wt% is added with 10g/min speed in weighed PVB
Ethyl alcohol in, stirring 10-20min dissolution, obtain PVB solution；
Step c prepares organic bentonite suspension: organobentonite being first added to the 120# weighed up with 12g/min speed
It in solvent naphtha, stirs 8-10 minutes, the ethyl alcohol stirring 3-5min of 10wt% is added, obtains organobentonite suspension；
Step d, under the stirring condition of 200r/min, by the organobentonite suspension with the speed of 20 ml/min
It is added in the dehydrated alcohol of surplus, continues to stir 3-5min after the completion of being added, the resin is added with the speed of 20ml/min
Solution, continues to stir 3-5min after the completion of being added, and the PVB solution is added with the speed of 20ml/min, continues after the completion of being added
3-5min is stirred, first material is obtained；
Weighed silicon carbide and ferrochrome powder are uniformly mixed by step e, are added to described first with the speed of 50-60g/min
In material, stop after mixing slowly until completion 5min is added, obtains the iron base composite material casting and seep coating.
Through detecting, it is 99.93% that viscosity, which is 0.057,2h suspension with the change rate of revolving speed, and suspension is for 24 hours
87.72%, the knockout amount of sweeping away is 0.14, gas permeability 2.01, levelability 510.29mm.
Coating prepared by above-described embodiment 1-3 carries out pouring experiment in accordance with the following steps:
Step 1: coating composite materials coating: by the coating with brush brushing on sandbox and type core, brushing first layer
It after coating 15 minutes, is lighted, after the burning completely of the first coating, carries out second and brush, carried out a little after 15 minutes
Combustion；
Step 2: mould assembling is poured: the molten metal of casting is high-chromium alloy (chromium content 22-26%), and pouring temperature is
1450℃.In order to reduce danger when casting, occur when the molten metal for preventing temperature excessively high pours due to the moisture in sandbox
Molten metal sprays, and needs to carry out drying and processing to sandbox and type core before mould assembling, then carries out the sandbox type core after drying
Then mould assembling is poured；
Step 3: peeling: after the solidification of certain time is cooling, mould turnover knockout and Shot Blasting are carried out, it will
Casting takes out, and observes cast(ing) surface combining case.
From can sufficiently be combined between enhancing particulate coating material and the basis material rich chromium cast iron of brushing in terms of casting result, and
And surface quality of continuous castings is good, the defects of pore-free and residue.And compared with basis material, wear-resisting property improves 1.8-2.5
Times.
When the content of coating composition not within the scope of the invention when, the quality of gained cast(ing) surface is unable to reach well
Mass effect, it may appear that the defects of stomata or residue；When the granularity of silicon carbide is not in the range of 70-100 mesh or ferrochrome powder
Granularity not in the range of 100-250 mesh, the wear-resisting property of casting increases compared with basis material, but cannot reach
1.8-2.5 improvement effect again.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modification, equivalent replacement or improvement etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. coating is seeped in a kind of casting of iron base composite material, which is characterized in that the raw material components including following mass percent: rosin
Resin 1.8-2.2%, phenolic resin 0.9-1.1%, polyvinyl butyral 0.4-0.6%, organobentonite 1.0-1.5%,
Solvent naphtha 4.0-6.0%, silicon carbide 11-13%, ferrochrome powder 8-12%, surplus is dehydrated alcohol.
2. coating is seeped in iron base composite material as described in claim 1 casting, which is characterized in that the phenolic resin is first rank phenol
Urea formaldehyde.
3. coating is seeped in iron base composite material as described in claim 1 casting, which is characterized in that the solvent naphtha is 120# solvent
Oil.
4. coating is seeped in iron base composite material as described in claim 1 casting, which is characterized in that the granularity of the silicon carbide is
70-100 mesh.
5. coating is seeped in iron base composite material as described in claim 1 casting, which is characterized in that the ferrochrome powder is low-carbon ferrochromium
Powder, granularity are 100-250 mesh.
6. the preparation method that a kind of iron base composite material seeps coating with casting, which is characterized in that at least include the following steps:
Step a weighs each group according to the design proportion that coating is seeped in any one of the claim 1-5 iron base composite material casting
Point, weighed phenolic resin is added in the dehydrated alcohol of 4-7wt%, is uniformly mixed, phenol resin solution is obtained, by weighed pine
Botany bar gum is added in the phenol resin solution after pulverizing, and is uniformly mixed, is obtained resin solution；
Step b weighed polyvinyl butyral is added in the dehydrated alcohol of 2-5wt%, is uniformly mixed, and obtains polyvinyl alcohol contracting
Butyraldehyde solution；
Weighed organobentonite is added in the solvent naphtha step c, stirs 8-10min, and the anhydrous second of 5-10wt% is added
Alcohol continues to stir 3-5min, obtains organobentonite suspension；
Step d the organobentonite suspension is added in the dehydrated alcohol of surplus, is uniformly mixed, sequentially adds the tree
Lipoprotein solution, polyvinyl butyral solution are uniformly mixed, obtain first material；
Weighed silicon carbide and ferrochrome powder are uniformly mixed by step e, are added in the first material, are uniformly mixed, are obtained the iron
Coating is seeped in based composites casting.
7. the preparation method that iron base composite material as claimed in claim 6 seeps coating with casting, which is characterized in that, will in step c
The organobentonite is added in the solvent naphtha with the speed of 8-12g/min.
8. the preparation method that iron base composite material as claimed in claim 6 seeps coating with casting, which is characterized in that in step c, stir
Mixing speed is 150-200r/min.
9. a kind of side for seeping coating preparation casting impregnation coating using the casting of claim 1-5 described in any item iron base composite materials
Method, which is characterized in that at least include the following steps:
The coating is coated in casting mold type chamber or whose surfaces, after 15-20min, lights coating, after coating burning completely,
After the casting mold type chamber or whose surfaces the second coating of coating, 15-20min, putting burning coating material will after coating burning completely
Melted pouring metal melt enters in the type chamber or type core, after solidification is cooling, in cast(ing) surface up to the casting impregnation coating.
10. the method that coating preparation casting impregnation coating is seeped in iron base composite material as claimed in claim 9 casting, which is characterized in that
Pouring temperature is 1420-1470 DEG C.
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Application publication date: 20190806 Assignee: Qian'an Litianmingsheng Trading Co.,Ltd. Assignor: HEBEI University OF SCIENCE AND TECHNOLOGY Contract record no.: X2024980008798 Denomination of invention: A preparation method of casting infiltration coating and a preparation method of casting infiltration coating Granted publication date: 20200929 License type: Common License Record date: 20240702 |