CN105256236A - Anti-corrosion high-tenacity wear-proof casting section - Google Patents
Anti-corrosion high-tenacity wear-proof casting section Download PDFInfo
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- CN105256236A CN105256236A CN201510649389.7A CN201510649389A CN105256236A CN 105256236 A CN105256236 A CN 105256236A CN 201510649389 A CN201510649389 A CN 201510649389A CN 105256236 A CN105256236 A CN 105256236A
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Abstract
The invention discloses an anti-corrosion high-tenacity wear-proof casting section. The preparation steps of the anti-corrosion high-tenacity wear-proof casting section comprise smelting, detecting, pouring, thermal treating, preprocessing and coating spraying. A substrate molten alloy solution of the anti-corrosion high-tenacity wear-proof casting section comprises C, Si, Cr, Ca, Mn, Mo, V, Zr, Al, B, Mg, Ti, Cu, S, P, and the balance iron and unavoidable impurities. The anti-corrosion high-tenacity wear-proof casting section prepared in this way can be used in various environments, good corrosion resistance and good wear resistance are achieved, the hardness can reach over 70 HRC, the impact toughness can reach 7 J/cm2, and requirements for the casting section in the actual use process are met.
Description
Technical field
The present invention relates to cast segment technical field, particularly relate to a kind of protection against corrosion high-toughness wear-resistant cast segment.
Background technology
Along with industrial expansion, the application of grinding machine is also tending towards extensive, and cast segment is grinding machine equipment grinding material medium, produces ablation, thus reduced further by the particle diameter of material by the collision friction between grinding machine cast segment, between cast segment and material.Alloy cast segment common in prior art, to be widely used in the industries such as building materials, mine, electric power higher than the wear resisting property of forging cast segment.Industrial cast segment long term operation is in the alluvium grinding abrasion environment of 200-300 DEG C, and grinding element frequency of impact is high, serious wear.And low chromium, low manganese, middle carbon casting mill section toughness is high, thermal conductivity is good, but due to hardness lower, polishing machine is poor, consumes large.According to high chromium cast segment, although the hardness of cast segment can be improved, owing to being water mill at the grinding machine of ore dressing industry, except can chemical corrosion be produced, in the middle of grinding, because cast segment chrome content is higher, inner appearance potential is poor, produces electricity, galvanic corrosion is there is under the medium conductive condition of water, result of use is also undesirable, and therefore, the transformation of mine grinding machine cast segment is this area problem urgently to be resolved hurrily.
Existing cast segment wear resistance, hardness, toughness and corrosion-resistant in poor performance, the requirement of now society can not be met.Because the defect that above-mentioned cast segment exists, therefore, require the toughness that cast segment should have high wear resistance, hardness is become reconciled, also require that the rotproofness of cast segment wants good, this just proposes more high-grade requirement to the composition of cast segment and process of surface treatment.
Summary of the invention
Based on the technical problem that background technology exists, the present invention proposes a kind of protection against corrosion high-toughness wear-resistant cast segment, can use in a variety of contexts, have good corrosion-resistant and wear resistance, hardness can reach more than 70HRC, and impelling strength can reach 7J/cm
2, meet the requirement to cast segment in actual use procedure.
A kind of protection against corrosion high-toughness wear-resistant cast segment that the present invention proposes, obtains in accordance with the following steps:
S1, melting: the pig iron, steel scrap are joined in high-frequency induction smelting furnace, and be heated to 1500-1560 DEG C, ferrochrome, red copper, silicocalcium, ferromanganese and molybdenum-iron is added after insulation 20-45min, add ferro-boron and vanadium iron until completely melted, be warming up to 1560-1600 DEG C, add magnesium ingot, aluminium ingot, zirconium ingot and titanium ingot after insulation 10-20min, skim after each raw material melts completely, obtain matrix alloy liquid;
S2, detection: the component concentration detecting matrix alloy liquid, each element comprises by weight percentage: C:1.3-1.6%, Si:0.9-1.3%, Cr:0.1-0.5%, Ca:0.5-1.2%, Mn:2.0-3.5%, Mo:0.6-0.8%, V:0.02-0.04%, Zr:0.02-0.04%, Al:1.2-2.3%, B:0.003-0.03%, Mg:0.7-1.2%, Ti:1.1-1.4%, Cu:0.2-0.4%, S:0.01-0.04%, P:0.02-0.04%, surplus is iron and inevitable impurity;
S3, cast: pouring into surface-coated after matrix alloy liquid is cooled to 1350-1400 DEG C has in the die cavity of nano paint, die sinking after liquation solidifies completely, stove is chilled to room temperature and obtains cast segment base substrate A, and wherein nano paint is 30-60 μm at the coating thickness of cavity surface;
S4, thermal treatment: cast segment base substrate A is put into electric furnace, in electric furnace, pass into argon gas makes oxygen level in electric furnace be less than 5%, argon gas flow velocity is 5-8L/min, in 10-15min, furnace temperature is warming up to 960-1000 DEG C, insulation 30-40min, 1050-1150 DEG C is warming up in 2-3min, insulation 12-15min, is warming up to 1200-1300 DEG C in 6-8min, insulation 16-18min, add in the salt bath of 260-320 DEG C after taking-up, insulation 20-35min, takes out post-heating to 400-480 DEG C, insulation 20-35min, air cooling, to room temperature, obtains cast segment base substrate B;
S5, pre-treatment: at room temperature soak cast segment base substrate B 5-10min, take out in dry rear immersion ethanol, ultrasonic vibration 15-20min at 55-65 DEG C, take out in dry rear immersion acetone, ultrasonic vibration 10-15min at 30-40 DEG C, taking-up is placed in vacuum chamber and carries out drying, carries out process obtain cast segment base substrate C with sandblast machine effects on surface, and the roughness of cast segment base substrate C is 4-6 μm;
S6, spray-on coating: utilize plasma spray system after surface spraying a layer thickness of cast segment base substrate C pure nickel key coat that is 105-109 μm, adopt pneumatic type usual spray machine again, coating is sucked under temperature is 20-25 DEG C of condition, be forced into 7.5-30MPa, by high pressure hose, spray gun, continuing spraying a layer thickness through nozzle outward at described pure nickel key coat is the coating of 70-80um, obtains described protection against corrosion high-toughness wear-resistant cast segment; The raw material of wherein said coating comprises by weight: modifying epoxy resin by organosilicon emulsion 100 parts, polytetrafluoroethylene powder 10-40 part, molybdenumdisulphide 5-10 part, silicon carbide 10-20 part, nano silicon 5-10 part, silane coupling agent 1-5 part, antimonous oxide 1-3 part, diethylenetriamine 5-10 part.
Preferably, in S2, detect the component concentration of matrix alloy liquid, each element comprises by weight percentage: C:1.4%, Si:1.1%, Cr:0.3%, Ca:0.8%, Mn:2.8%, Mo:0.7%, V:0.03%, Zr:0.03%, Al:1.7%, B:0.01%, Mg:0.9%, Ti:1.2%, Cu:0.3%, S:0.02%, P:0.03%, surplus is iron and inevitable impurity.
Preferably, in S3, described nano paint comprises by weight: charing titanium 1-2 part, Tungsten carbide 3-5 part, nickel bag aluminium sesquioxide 1-2 part, boron nitride 2-4 part, zirconium English powder 5-8 part, bauxite powder 6-10 part, dehydrated alcohol 2-8 part.
Preferably, the technique preparing described nano paint comprises: be ground to particle diameter≤100nm by after charing titanium, Tungsten carbide, nickel bag aluminium sesquioxide, boron nitride, zirconium English powder, bauxite powder mixing, obtain described nano paint after adding dehydrated alcohol mixing.
Preferably, in S4, cast segment base substrate A is put into electric furnace, in electric furnace, pass into argon gas makes oxygen level in electric furnace be less than 5%, and argon gas flow velocity is 6L/min, in 13min, furnace temperature is warming up to 980 DEG C, insulation 35min, is warming up to 1100 DEG C in 2.5min, insulation 13min, in 7min, be warming up to 1250 DEG C, insulation 17min, adds in the salt bath of 300 DEG C after taking-up, insulation 28min, takes out post-heating to 440 DEG C, insulation 27min, air cooling, to room temperature, obtains cast segment base substrate B.
Preferably, described salt bath comprises saltpetre 52-58% and SODIUMNITRATE 42-48% by mass percentage.
Preferably, in S6, prepare described modifying epoxy resin by organosilicon emulsion to comprise: by weight 100 parts of epoxy resin are dissolved in 100-200 part butylacetate, be warming up to 100-120 DEG C, 20-30 part Union carbide A-162,10-20 part dimethyldiethoxysilane, 3-8 part deionized water and 5-19 part dibutyl tin laurate is added successively under stirring, after insulation reaction 4-5h, discharging, filter, obtain described modifying epoxy resin by organosilicon emulsion.
Preferably, in S6, the weight proportion of polytetrafluoroethylene powder, molybdenumdisulphide, silicon carbide, nano silicon is: 3:1:2:1.
Preferably, in S6, the technique preparing described coating comprises: by after molybdenumdisulphide, silicon carbide mixing, to be ground to particle diameter be 1-3um, add nano silicon, silane coupling agent, using dehydrated alcohol as solvent after mixing, ultrasonic radiation 3-5min at 30-40 DEG C, underpressure distillation removing dehydrated alcohol post-drying, join in modifying epoxy resin by organosilicon emulsion and mix, add polytetrafluoroethylene powder, antimonous oxide dispersion 20-30min again, add diethylenetriamine to stir, obtain described coating.
Wherein, when being produced various iron or iron alloy by iron ore, due in iron ore often association have the metal such as phosphorus, sulphur or nonmetalliferous ore, cause in final iron or iron alloy containing the impurity that the element such as phosphorus, sulphur and being difficult to is avoided.
The present invention adopts the cooperations such as the pig iron, steel scrap, ferrochrome, silicocalcium, ferromanganese, molybdenum-iron, ferro-boron and vanadium iron as the major ingredient of cast segment, complete the requirement that the present invention is high for cast segment density and impelling strength is high, improve cast segment in use grinding efficiency, strengthen the wearing quality of cast segment, reduce the content of chromium simultaneously, avoid the galvanic corrosion effect of cast segment, the magnesium ingot added, aluminium ingot, zirconium ingot and titanium ingot cooperatively interact, and alloy liquid carries out deoxidation denitrogenation, reduce the content of oxide compound and nitride in matrix alloy liquid, improve the work-ing life of cast segment further, in casting process, by being coated with nano paint in cavity surface, ceramic particle in nano paint etc. is brushed at casting mould inwall, thus nanometer scale ceramics enhanced granule is embedded in surface and the subsurface of cast segment, one deck nano level height hard strengthening layer is formed thus on cast segment top layer, this strengthening layer is owing to being distributed with the ceramic particle etc. of excellent property, cast segment is had, and high strength, high tenacity, wear resistance are good, high temperature resistant, corrosion-resistant, rigidity advantages of higher, thus considerably improve the anti-collision performance of cast segment, intensity and wear resisting property, in thermal treatment process, by setting three sections of slow temperature-rise periods of warm area, ensure that alloy cast intersegmental part tissue change is reasonable, composition is homogenizing more, subsequently the cast segment base substrate after intensification is quenched in hot salt bath, it is much smaller that harmful internal stress that cast segment base substrate inside generates and distortion are compared with medium quenchings such as cold oil, ensure that casting carries out salt bath austempering by predetermined temperature simultaneously, do not need tempering just can obtain bainite and the retained austenite mixed structure of good combination property, increase substantially the toughness of cast segment, impelling strength can reach 7J/cm
2, sandblasting is carried out after oil removing grease removal is carried out to cast segment base substrate, adopt the method for plasma spraying can form stable pure nickel key coat on cylinder shape alloy substrate surface thus, it forms fine and close protective membrane on cast segment surface, significantly improves the heat-resisting, corrosion-resistant of cast segment and oxidation resistent susceptibility, then spraying one deck coating is continued outward at cast segment surface pure nickel key coat, described coating is by adopting modifying epoxy resin by organosilicon emulsion as base-material, other components in coating can be included in together by it, by the epoxy group(ing) that it contains, the solidified coating of mortise can be formed on pure nickel top layer under solidifying agent diethylenetriamine condition, wherein also add tetrafluoroethylene, molybdenumdisulphide, silicon carbide, nano silicon is as filler, the synergy of four adds the cracking resistance sex change energy of coating, make the wear resisting property of coating excellent, wear weight loss is minimum, there is excellent Corrosion Protection simultaneously, hard particles antimonous oxide, not only can improve the hardness of coating, and effectively improve coating abrasion performance, by the pure nickel key coat of cast segment surface spraying and the paint coatings on it in the present invention, the mating reaction of the two, improves the performance of the aspect such as wear-resistant, corrosion-resistant of cast segment significantly, makes the present invention be more suitable for wet grinding, improve work-ing life of the present invention, indirectly reduce use cost.
Embodiment
Below, by specific embodiment, technical scheme of the present invention is described in detail.
Embodiment 1
A kind of protection against corrosion high-toughness wear-resistant cast segment that the present invention proposes, obtains in accordance with the following steps:
S1, melting: the pig iron, steel scrap are joined in high-frequency induction smelting furnace, and be heated to 1500 DEG C, ferrochrome, red copper, silicocalcium, ferromanganese and molybdenum-iron is added after insulation 45min, add ferro-boron and vanadium iron until completely melted, be warming up to 1560 DEG C, add magnesium ingot, aluminium ingot, zirconium ingot and titanium ingot after insulation 20min, skim after each raw material melts completely, obtain matrix alloy liquid;
S2, detection: the component concentration detecting matrix alloy liquid, each element comprises by weight percentage: C:1.3%, Si:1.3%, Cr:0.1%, Ca:1.2%, Mn:2.0%, Mo:0.8%, V:0.02%, Zr:0.04%, Al:1.2%, B:0.03%, Mg:0.7%, Ti:1.4%, Cu:0.2%, S:0.04%, P:0.02%, surplus is iron and inevitable impurity;
S3, cast: pouring into surface-coated after matrix alloy liquid is cooled to 1350 DEG C has in the die cavity of nano paint, die sinking after liquation solidifies completely, stove is chilled to room temperature and obtains cast segment base substrate A, wherein nano paint is 30-60 μm at the coating thickness of cavity surface, and wherein said nano paint comprises by weight: charing titanium 2 parts, Tungsten carbide 3 parts, nickel bag aluminium sesquioxide 2 parts, boron nitride 2 parts, 8 parts, zirconium English powder, bauxite powder 6 parts, dehydrated alcohol 8 parts;
S4, thermal treatment: cast segment base substrate A is put into electric furnace, in electric furnace, pass into argon gas makes oxygen level in electric furnace be less than 5%, argon gas flow velocity is 5L/min, in 15min, furnace temperature is warming up to 960 DEG C, insulation 40min, is warming up to 1150 DEG C in 2min, insulation 12min, 1200 DEG C are warming up in 8min, insulation 18min, adds in the salt bath of 260 DEG C after taking-up, insulation 35min, take out post-heating to 400 DEG C, insulation 35min, air cooling, to room temperature, obtains cast segment base substrate B, wherein, described salt bath comprises saltpetre 52% and SODIUMNITRATE 48% by mass percentage;
S5, pre-treatment: at room temperature soak cast segment base substrate B 5min, take out in dry rear immersion ethanol, ultrasonic vibration 15min at 65 DEG C, take out in dry rear immersion acetone, ultrasonic vibration 10min at 40 DEG C, taking-up is placed in vacuum chamber and carries out drying, carries out process obtain cast segment base substrate C with sandblast machine effects on surface, and the roughness of cast segment base substrate C is 4-6 μm; ;
S6, spray-on coating: utilize plasma spray system after surface spraying a layer thickness of cast segment base substrate C pure nickel key coat that is 105-109 μm, adopt pneumatic type usual spray machine again, coating is sucked under temperature is 20 DEG C of conditions, be forced into 30MPa, by high pressure hose, spray gun, continuing spraying a layer thickness through nozzle outward at described pure nickel key coat is the coating of 70-80um, obtains described protection against corrosion high-toughness wear-resistant cast segment; The raw material of wherein said coating comprises by weight: modifying epoxy resin by organosilicon emulsion 100 parts, polytetrafluoroethylene powder 10 parts, molybdenumdisulphide 10 parts, 10 parts, silicon carbide, nano silicon 10 parts, silane coupling agent 1 part, antimonous oxide 3 parts, diethylenetriamine 5 parts;
Wherein, prepare described modifying epoxy resin by organosilicon emulsion to comprise: by weight 100 parts of epoxy resin are dissolved in 100 parts of butylacetates, be warming up to 120 DEG C, 20 parts of Union carbide A-162s, 20 parts of dimethyldiethoxysilanes, 3 parts of deionized waters and 19 parts of dibutyl tin laurates are added successively under stirring, after insulation reaction 4h, discharging, filters, obtains described modifying epoxy resin by organosilicon emulsion;
The technique preparing described coating comprises: by after molybdenumdisulphide, silicon carbide mixing, to be ground to particle diameter be 1-3um, add nano silicon, silane coupling agent, using dehydrated alcohol as solvent after mixing, ultrasonic radiation 5min at 30 DEG C, underpressure distillation removing dehydrated alcohol post-drying, joins in modifying epoxy resin by organosilicon emulsion and mixes, then adds polytetrafluoroethylene powder, antimonous oxide dispersion 20min, add diethylenetriamine to stir, obtain described coating.
Embodiment 2
A kind of protection against corrosion high-toughness wear-resistant cast segment that the present invention proposes, obtains in accordance with the following steps:
S1, melting: the pig iron, steel scrap are joined in high-frequency induction smelting furnace, and be heated to 1560 DEG C, ferrochrome, red copper, silicocalcium, ferromanganese and molybdenum-iron is added after insulation 20min, add ferro-boron and vanadium iron until completely melted, be warming up to 1600 DEG C, add magnesium ingot, aluminium ingot, zirconium ingot and titanium ingot after insulation 10min, skim after each raw material melts completely, obtain matrix alloy liquid;
S2, detection: the component concentration detecting matrix alloy liquid, each element comprises by weight percentage: C:1.6%, Si:0.9%, Cr:0.5%, Ca:0.5%, Mn:3.5%, Mo:0.6%, V:0.04%, Zr:0.02%, Al:2.3%, B:0.003%, Mg:1.2%, Ti:1.1%, Cu:0.4%, S:0.01%, P:0.04%, surplus is iron and inevitable impurity;
S3, cast: pouring into surface-coated after matrix alloy liquid is cooled to 1400 DEG C has in the die cavity of nano paint, die sinking after liquation solidifies completely, stove is chilled to room temperature and obtains cast segment base substrate A, wherein nano paint is 30-60 μm at the coating thickness of cavity surface, and wherein said nano paint comprises by weight: charing titanium 1 part, Tungsten carbide 5 parts, nickel bag aluminium sesquioxide 1 part, boron nitride 4 parts, 5 parts, zirconium English powder, bauxite powder 10 parts, dehydrated alcohol 2 parts;
S4, thermal treatment: cast segment base substrate A is put into electric furnace, in electric furnace, pass into argon gas makes oxygen level in electric furnace be less than 5%, argon gas flow velocity is 8L/min, in 10min, furnace temperature is warming up to 1000 DEG C, insulation 30min, is warming up to 1050 DEG C in 3min, insulation 15min, 1300 DEG C are warming up in 6min, insulation 16min, adds in the salt bath of 320 DEG C after taking-up, insulation 20min, take out post-heating to 480 DEG C, insulation 20min, air cooling, to room temperature, obtains cast segment base substrate B, wherein, described salt bath comprises saltpetre 58% and SODIUMNITRATE 42% by mass percentage;
S5, pre-treatment: at room temperature soak cast segment base substrate B 10min, take out in dry rear immersion ethanol, ultrasonic vibration 20min at 55 DEG C, take out in dry rear immersion acetone, ultrasonic vibration 15min at 30 DEG C, taking-up is placed in vacuum chamber and carries out drying, carries out process obtain cast segment base substrate C with sandblast machine effects on surface, and the roughness of cast segment base substrate C is 4-6 μm; ;
S6, spray-on coating: utilize plasma spray system after surface spraying a layer thickness of cast segment base substrate C pure nickel key coat that is 105-109 μm, adopt pneumatic type usual spray machine again, coating is sucked under temperature is 25 DEG C of conditions, be forced into 7.5MPa, by high pressure hose, spray gun, continuing spraying a layer thickness through nozzle outward at described pure nickel key coat is the coating of 70-80um, obtains described protection against corrosion high-toughness wear-resistant cast segment; The raw material of wherein said coating comprises by weight: modifying epoxy resin by organosilicon emulsion 100 parts, polytetrafluoroethylene powder 40 parts, molybdenumdisulphide 5 parts, 20 parts, silicon carbide, nano silicon 5 parts, silane coupling agent 5 parts, antimonous oxide 1 part, diethylenetriamine 10 parts;
Wherein, prepare described modifying epoxy resin by organosilicon emulsion to comprise: by weight 100 parts of epoxy resin are dissolved in 200 parts of butylacetates, be warming up to 100 DEG C, 30 parts of Union carbide A-162s, 10 parts of dimethyldiethoxysilanes, 8 parts of deionized waters and 5 parts of dibutyl tin laurates are added successively under stirring, after insulation reaction 5h, discharging, filters, obtains described modifying epoxy resin by organosilicon emulsion;
The technique preparing described coating comprises: by after molybdenumdisulphide, silicon carbide mixing, to be ground to particle diameter be 1-3um, add nano silicon, silane coupling agent, using dehydrated alcohol as solvent after mixing, ultrasonic radiation 3min at 40 DEG C, underpressure distillation removing dehydrated alcohol post-drying, joins in modifying epoxy resin by organosilicon emulsion and mixes, then adds polytetrafluoroethylene powder, antimonous oxide dispersion 30min, add diethylenetriamine to stir, obtain described coating.
Embodiment 3
A kind of protection against corrosion high-toughness wear-resistant cast segment that the present invention proposes, obtains in accordance with the following steps:
S1, melting: the pig iron, steel scrap are joined in high-frequency induction smelting furnace, and be heated to 1530 DEG C, ferrochrome, red copper, silicocalcium, ferromanganese and molybdenum-iron is added after insulation 35min, add ferro-boron and vanadium iron until completely melted, be warming up to 1580 DEG C, add magnesium ingot, aluminium ingot, zirconium ingot and titanium ingot after insulation 15min, skim after each raw material melts completely, obtain matrix alloy liquid;
S2, detection: the component concentration detecting matrix alloy liquid, each element comprises by weight percentage: C:1.4%, Si:1.1%, Cr:0.3%, Ca:0.8%, Mn:2.8%, Mo:0.7%, V:0.03%, Zr:0.03%, Al:1.7%, B:0.02%, Mg:0.9%, Ti:1.2%, Cu:0.3%, S:0.02%, P:0.03%, surplus is iron and inevitable impurity;
S3, cast: pouring into surface-coated after matrix alloy liquid is cooled to 1370 DEG C has in the die cavity of nano paint, die sinking after liquation solidifies completely, stove is chilled to room temperature and obtains cast segment base substrate A, wherein nano paint is 30-60 μm at the coating thickness of cavity surface, and wherein said nano paint comprises by weight: charing titanium 1.5 parts, Tungsten carbide 4 parts, nickel bag aluminium sesquioxide 1.5 parts, boron nitride 3 parts, 6 parts, zirconium English powder, bauxite powder 8 parts, dehydrated alcohol 5 parts;
S4, thermal treatment: cast segment base substrate A is put into electric furnace, in electric furnace, pass into argon gas makes oxygen level in electric furnace be less than 5%, argon gas flow velocity is 6L/min, in 13min, furnace temperature is warming up to 980 DEG C, insulation 35min, 1100 DEG C are warming up in 2.5min, insulation 13min, 1250 DEG C are warming up in 7min, insulation 17min, add in the salt bath of 300 DEG C after taking-up, insulation 28min, take out post-heating to 440 DEG C, insulation 27min, air cooling is to room temperature, obtain cast segment base substrate B, wherein, described salt bath comprises saltpetre 55% and SODIUMNITRATE 45% by mass percentage,
S5, pre-treatment: at room temperature soak cast segment base substrate B 7min, take out in dry rear immersion ethanol, ultrasonic vibration 17min at 60 DEG C, take out in dry rear immersion acetone, ultrasonic vibration 13min at 35 DEG C, taking-up is placed in vacuum chamber and carries out drying, carries out process obtain cast segment base substrate C with sandblast machine effects on surface, and the roughness of cast segment base substrate C is 4-6 μm; ;
S6, spray-on coating: utilize plasma spray system after surface spraying a layer thickness of cast segment base substrate C pure nickel key coat that is 105-109 μm, adopt pneumatic type usual spray machine again, coating is sucked under temperature is 22 DEG C of conditions, be forced into 20MPa, by high pressure hose, spray gun, continuing spraying a layer thickness through nozzle outward at described pure nickel key coat is the coating of 70-80um, obtains described protection against corrosion high-toughness wear-resistant cast segment; The raw material of wherein said coating comprises by weight: modifying epoxy resin by organosilicon emulsion 100 parts, polytetrafluoroethylene powder 25 parts, molybdenumdisulphide 7 parts, 15 parts, silicon carbide, nano silicon 7 parts, silane coupling agent 3 parts, antimonous oxide 2 parts, diethylenetriamine 8 parts;
Wherein, prepare described modifying epoxy resin by organosilicon emulsion to comprise: by weight 100 parts of epoxy resin are dissolved in 150 parts of butylacetates, be warming up to 110 DEG C, 25 parts of Union carbide A-162s, 15 parts of dimethyldiethoxysilanes, 5 parts of deionized waters and 12 parts of dibutyl tin laurates are added successively under stirring, after insulation reaction 4.5h, discharging, filters, obtains described modifying epoxy resin by organosilicon emulsion;
The technique preparing described coating comprises: by after molybdenumdisulphide, silicon carbide mixing, to be ground to particle diameter be 1-3um, add nano silicon, silane coupling agent, using dehydrated alcohol as solvent after mixing, ultrasonic radiation 4min at 35 DEG C, underpressure distillation removing dehydrated alcohol post-drying, joins in modifying epoxy resin by organosilicon emulsion and mixes, then adds polytetrafluoroethylene powder, antimonous oxide dispersion 25min, add diethylenetriamine to stir, obtain described coating.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (9)
1. a protection against corrosion high-toughness wear-resistant cast segment, is characterized in that, obtains in accordance with the following steps:
S1, melting: the pig iron, steel scrap are joined in high-frequency induction smelting furnace, and be heated to 1500-1560 DEG C, ferrochrome, red copper, silicocalcium, ferromanganese and molybdenum-iron is added after insulation 20-45min, add ferro-boron and vanadium iron until completely melted, be warming up to 1560-1600 DEG C, add magnesium ingot, aluminium ingot, zirconium ingot and titanium ingot after insulation 10-20min, skim after each raw material melts completely, obtain matrix alloy liquid;
S2, detection: the component concentration detecting matrix alloy liquid, each element comprises by weight percentage: C:1.3-1.6%, Si:0.9-1.3%, Cr:0.1-0.5%, Ca:0.5-1.2%, Mn:2.0-3.5%, Mo:0.6-0.8%, V:0.02-0.04%, Zr:0.02-0.04%, Al:1.2-2.3%, B:0.003-0.03%, Mg:0.7-1.2%, Ti:1.1-1.4%, Cu:0.2-0.4%, S:0.01-0.04%, P:0.02-0.04%, surplus is iron and inevitable impurity;
S3, cast: pouring into surface-coated after matrix alloy liquid is cooled to 1350-1400 DEG C has in the die cavity of nano paint, die sinking after liquation solidifies completely, stove is chilled to room temperature and obtains cast segment base substrate A, and wherein nano paint is 30-60 μm at the coating thickness of cavity surface;
S4, thermal treatment: cast segment base substrate A is put into electric furnace, in electric furnace, pass into argon gas makes oxygen level in electric furnace be less than 5%, argon gas flow velocity is 5-8L/min, in 10-15min, furnace temperature is warming up to 960-1000 DEG C, insulation 30-40min, 1050-1150 DEG C is warming up in 2-3min, insulation 12-15min, is warming up to 1200-1300 DEG C in 6-8min, insulation 16-18min, add in the salt bath of 260-320 DEG C after taking-up, insulation 20-35min, takes out post-heating to 400-480 DEG C, insulation 20-35min, air cooling, to room temperature, obtains cast segment base substrate B;
S5, pre-treatment: at room temperature soak cast segment base substrate B 5-10min, take out in dry rear immersion ethanol, ultrasonic vibration 15-20min at 55-65 DEG C, take out in dry rear immersion acetone, ultrasonic vibration 10-15min at 30-40 DEG C, taking-up is placed in vacuum chamber and carries out drying, carries out process obtain cast segment base substrate C with sandblast machine effects on surface, and the roughness of cast segment base substrate C is 4-6 μm;
S6, spray-on coating: utilize plasma spray system after surface spraying a layer thickness of cast segment base substrate C pure nickel key coat that is 105-109 μm, adopt pneumatic type usual spray machine again, coating is sucked under temperature is 20-25 DEG C of condition, be forced into 7.5-30MPa, by high pressure hose, spray gun, continuing spraying a layer thickness through nozzle outward at described pure nickel key coat is the coating of 70-80um, obtains described protection against corrosion high-toughness wear-resistant cast segment; The raw material of wherein said coating comprises by weight: modifying epoxy resin by organosilicon emulsion 100 parts, polytetrafluoroethylene powder 10-40 part, molybdenumdisulphide 5-10 part, silicon carbide 10-20 part, nano silicon 5-10 part, silane coupling agent 1-5 part, antimonous oxide 1-3 part, diethylenetriamine 5-10 part.
2. protection against corrosion high-toughness wear-resistant cast segment according to claim 1, is characterized in that, in S2, detects the component concentration of matrix alloy liquid, each element comprises by weight percentage: C:1.4%, Si:1.1%, Cr:0.3%, Ca:0.8%, Mn:2.8%, Mo:0.7%, V:0.03%, Zr:0.03%, Al:1.7%, B:0.01%, Mg:0.9%, Ti:1.2%, Cu:0.3%, S:0.02%, P:0.03%, surplus is iron and inevitable impurity.
3. protection against corrosion high-toughness wear-resistant cast segment according to claim 1 or 2, it is characterized in that, in S3, described nano paint comprises by weight: charing titanium 1-2 part, Tungsten carbide 3-5 part, nickel bag aluminium sesquioxide 1-2 part, boron nitride 2-4 part, zirconium English powder 5-8 part, bauxite powder 6-10 part, dehydrated alcohol 2-8 part.
4. protection against corrosion high-toughness wear-resistant cast segment according to claim 3, it is characterized in that, the technique preparing described nano paint comprises: be ground to particle diameter≤100nm by after charing titanium, Tungsten carbide, nickel bag aluminium sesquioxide, boron nitride, zirconium English powder, bauxite powder mixing, obtain described nano paint after adding dehydrated alcohol mixing.
5. protection against corrosion high-toughness wear-resistant cast segment according to any one of claim 1-4, it is characterized in that, in S4, cast segment base substrate A is put into electric furnace, in electric furnace, pass into argon gas makes oxygen level in electric furnace be less than 5%, argon gas flow velocity is 6L/min, in 13min, furnace temperature is warming up to 980 DEG C, insulation 35min, 1100 DEG C are warming up in 2.5min, insulation 13min, 1250 DEG C are warming up in 7min, insulation 17min, add in the salt bath of 300 DEG C after taking-up, insulation 28min, take out post-heating to 440 DEG C, insulation 27min, air cooling is to room temperature, obtain cast segment base substrate B.
6. protection against corrosion high-toughness wear-resistant cast segment according to claim 5, it is characterized in that, described salt bath comprises saltpetre 52-58% and SODIUMNITRATE 42-48% by mass percentage.
7. protection against corrosion high-toughness wear-resistant cast segment as described in any one of claim 1-6, it is characterized in that, in S6, prepare described modifying epoxy resin by organosilicon emulsion to comprise: by weight 100 parts of epoxy resin are dissolved in 100-200 part butylacetate, be warming up to 100-120 DEG C, 20-30 part Union carbide A-162,10-20 part dimethyldiethoxysilane, 3-8 part deionized water and 5-19 part dibutyl tin laurate is added successively under stirring, after insulation reaction 4-5h, discharging, filter, obtain described modifying epoxy resin by organosilicon emulsion.
8. protection against corrosion high-toughness wear-resistant cast segment according to any one of claim 1-7, is characterized in that, in S6, the weight proportion of polytetrafluoroethylene powder, molybdenumdisulphide, silicon carbide, nano silicon is: 3:1:2:1.
9. protection against corrosion high-toughness wear-resistant cast segment according to any one of claim 1-8, it is characterized in that, in S6, the technique preparing described coating comprises: by molybdenumdisulphide, being ground to particle diameter after silicon carbide mixing is 1-3um, add nano silicon, silane coupling agent, using dehydrated alcohol as solvent after mixing, ultrasonic radiation 3-5min at 30-40 DEG C, underpressure distillation removing dehydrated alcohol post-drying, join in modifying epoxy resin by organosilicon emulsion and mix, add polytetrafluoroethylene powder again, antimonous oxide dispersion 20-30min, add diethylenetriamine to stir, obtain described coating.
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| CN106521357A (en) * | 2016-12-19 | 2017-03-22 | 苏州金威特工具有限公司 | Corrosion resistant shear-steel |
| CN107326289A (en) * | 2017-06-09 | 2017-11-07 | 太仓东旭精密机械有限公司 | A kind of metal hardware material |
| CN107321452A (en) * | 2017-08-01 | 2017-11-07 | 合肥英源新材料科技有限公司 | A kind of manufacturing process in the milling storehouse of flour mill |
| CN107321452B (en) * | 2017-08-01 | 2019-05-03 | 新昌聚合机械科技有限公司 | A kind of manufacturing process in the milling storehouse of flour mill |
| CN115572132A (en) * | 2022-10-18 | 2023-01-06 | 陕西智诚旭隆智造有限公司 | Anti-corrosion PHC pipe pile and preparation method thereof |
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