CN106636864A - Composite modifier, prepared through mixed loading of aluminum-antimony-copper-ferrosilicon alloy and nanometer magnesium oxide-boron nitride, for gray pig iron and preparation method of composite modifier - Google Patents

Composite modifier, prepared through mixed loading of aluminum-antimony-copper-ferrosilicon alloy and nanometer magnesium oxide-boron nitride, for gray pig iron and preparation method of composite modifier Download PDF

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Publication number
CN106636864A
CN106636864A CN201611150418.6A CN201611150418A CN106636864A CN 106636864 A CN106636864 A CN 106636864A CN 201611150418 A CN201611150418 A CN 201611150418A CN 106636864 A CN106636864 A CN 106636864A
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powder
parts
boron nitride
copper
antimony
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CN201611150418.6A
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徐世云
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徐世云
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Priority to CN201611150418.6A priority Critical patent/CN106636864A/en
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C33/00Making ferrous alloys
    • C22C33/08Making cast-iron alloys
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C1/00Refining of pig-iron; Cast iron
    • C21C1/08Manufacture of cast-iron

Abstract

The invention relates to a composite modifier, prepared through mixed loading of aluminum-antimony-copper-ferrosilicon alloy and nanometer magnesium oxide-boron nitride, for gray pig iron and a preparation method of the composite modifier. The modifier is prepared from the following raw materials in parts by weight: 1-2 parts of nanometer magnesium oxide, 2-3 parts of nanometer boron nitride, 1-3 parts of aluminum powder, 0.8-1 parts of antimony powder, 3-5 parts of expansible graphite powder, 3-4 parts of copper powder, 4-6 parts of silicon iron powder with 45% of silicon content, 0.2-0.3 part of aluminum-magnesium silicate, 20-25 parts of ethanol water at the concentration of 5-8%, and 0.4-0.5 part of an additive. The nano-powder and the manganese-molybdenum-copper-ferrosilicon alloy powder loaded on the expansible graphite powder are mutually bonded and loaded to prepare the composite modifier with stable properties, the effect of promoting generation of crystal nucleus and refining the crystal nucleus is achieved, the composite alloyed powder optimizes the matrix structure, refines the graphite body and improves the strength, the modifier is rapidly melted after being added into the molten iron, the graphitization process is promoted, the comprehensive mechanical property of the gray pig iron is effectively improved, and compared with the traditional modifier, the composite modifier is more convenient to use, and the production cost is also reduced.

Description

A kind of casting pig of aluminium antimony copper-Antaciron load nano magnesia-boron nitride is with again Close alterant and preparation method thereof
Technical field
The present invention relates to a kind of casting pig alterant, and in particular to a kind of aluminium antimony copper-Antaciron load is nano oxidized Casting pig composite modifier of magnesium-boron nitride and preparation method thereof.
Background technology
Casting pig refers to the cast iron with flake graphite, is also to be employed a most wide class cast iron in the industrial production, its With good casting character, while show excellent at aspects such as vibration damping, wear-resisting, machining and notch sensitivities, but Because the flake graphite in casting pig is isolated seriously to matrix so as to which mechanical property performance is poor, the intensity of casting pig is improved It is urgent problem in industry.
The main method for improving strength of gray cast iron at present be add in fusion process a certain amount of chromium, molybdenum, nickel, copper and The alloying elements such as rare earth, to refine nucleus, increase nucleus quantity as alterant, so as to improve tissue intensity, though this method The intensity of casting pig can so be improved, but raw material availability is low, the restriction of the factor such as production cost height;Profit is also risen in recent years With nano material as alterant, can be with nucleus quantity in substantial amounts of increase melt, while crystal grain thinning, improves the densification of tissue Degree, yet with the design feature of nano material, its bad dispersibility in the melt, easily floating needs to aid in special spray Injection device, improves production cost.
The content of the invention
It is an object of the present invention to prepare a kind of new alterant by nano material and alloying element mixed load, subtract The usage amount of few expensive alloying elements, while simple lossless improvement nano material is dispersed in the melt, improves each raw material Utilization rate, reaching improves the purpose of Mechanical Properties of Grey Cast Iron, and to achieve these goals, the present invention provides a kind of aluminium antimony copper-silicon Casting pig composite modifier of ferroalloy load nano magnesia-boron nitride and preparation method thereof, the technical scheme of employing is such as Under:
A kind of casting pig composite modifier of aluminium antimony copper-Antaciron load nano magnesia-boron nitride and preparation method thereof, Characterized in that, the alterant is made up of the raw material of following weight portion:Nano magnesia 1-2, nm-class boron nitride 2-3, aluminium powder 1- 3rd, antimony powder 0.8-1, expanded graphite powder 3-5, copper powder 3-4, ferrosilicon powder 4-6, aluminium-magnesium silicate 0.2-0.3, the concentration that silicone content is 45% For the ethanol water 20-25 of 5-8%, auxiliary agent 0.4-0.5.
Described auxiliary agent is made up of the raw material of following weight portion:Potassium feldspar 2-3, lithium slag 1-3, Yttrium base rare earth inovulant 2- 3rd, boron phosphate 0.5-0.8, carbon nano-fiber 2-3, sodium lignin sulfonate 1-2, organobentonite 2-3, water 15-20, preparation method For:First sodium lignin sulfonate, organobentonite are thrown in water, 40-50min is thoroughly mixed, it is standby to make activating solution, subsequently Potassium feldspar, lithium slag are crushed, 80-120 mesh sieves are crossed, in screenings input activating solution 1-2h is ground, obtain activation potassium feldspar-lithium ore deposit Slag homogenate, other residual components are finally added to again activate in homogenate, and stirring mixing 2-3h obtains final product dopen Nano carbon fiber Composite strengthening breeds auxiliary agent.
A kind of casting pig composite modifier of described aluminium antimony copper-Antaciron load nano magnesia-boron nitride Preparation method is:
(1)Put into after being first well mixed aluminium powder, copper powder, antimony powder, ferrosilicon in electric furnace, moulding by casting after melting, subsequently by gained Alloy breaks down, crosses 300-400 mesh sieves, obtains alloyed powder standby;
(2)Nano magnesia, nm-class boron nitride are mixed with expanded graphite powder, in putting into the ethanol water of 10-15 weight portions, Slurry is carried out into closed ball milling process after being uniformly mixed, after ball milling 2-3h, gained slurry high-speed stirred mixing 12-15h is obtained The composite mortar of expanded graphite supporting nano magnesia-boron nitride is standby;
(3)By step(1)Alloy powder, the step of gained(2)Gained slurry mixes with other residual components, in closed environment Secondary agitation is carried out, mixed slurry high-speed stirred is mixed into heated-air drying after 15-18h, completely remove moisture content, be broken into fine powder Shape, obtains final product.
Compared with prior art, composite modifier of the present invention is by with the load of the expanded graphite powder of high-melting-point, high-specific surface area Nano magnesia, nm-class boron nitride powder and manganese molybdenum copper-ferro-silicon alloy powder mutually bond load, a kind of stable performance is obtained Alterant, nano material fusing point height therein is difficult ablated, has good dispersiveness in metal, reaches efficiently steady Fixed promotees nucleus, effect of refinement nucleus, and aluminium antimony copper-ferrosilicon composite alloy powder can optimize matrix, refine graphite body, increase Intensity;The alterant is added can quickly be fused in molten iron, promote graphitization process, be effectively improved the comprehensive mechanical property of casting pig Matter, and it is more convenient than the use of traditional alterant, production cost is also reduced.
Specific embodiment
Embodiment
The present embodiment alterant is made up of following raw material:Nano magnesia 2, nm-class boron nitride 3, aluminium powder 2, antimony powder 0.8th, expanded graphite powder 5, the ferrosilicon powder 5 that copper powder 4, silicone content is 45%, the ethanol water that aluminium-magnesium silicate 0.3, concentration is 8% 24th, auxiliary agent 0.5.
Described auxiliary agent is made up of the raw material of following weight portion:Potassium feldspar 2, lithium slag 2, Yttrium base rare earth inovulant 2.5, phosphorus Sour boron 0.6, carbon nano-fiber 3, sodium lignin sulfonate 1.8, organobentonite 3, water 18, preparation method is:First by sulfomethylated lignin Sour sodium, organobentonite are thrown in water, are thoroughly mixed 45min, and it is standby to make activating solution, subsequently by potassium feldspar, lithium slag powders It is broken, 100 mesh sieves are crossed, 1.5h is ground in screenings input activating solution, activation potassium feldspar-lithium slag homogenate is obtained, finally again by other Residual components are added in activation homogenate, and stirring mixing 2.5h, the composite strengthening for obtaining final product dopen Nano carbon fiber breeds auxiliary agent.
A kind of casting pig composite modifier of described aluminium antimony copper-Antaciron load nano magnesia-boron nitride Preparation method is:
(1)Put into after being first well mixed aluminium powder, copper powder, antimony powder, ferrosilicon in electric furnace, moulding by casting after melting, subsequently by gained Alloy breaks down, crosses 400 mesh sieves, obtains alloyed powder standby;
(2)Nano magnesia, nm-class boron nitride are mixed with expanded graphite powder, in putting into the ethanol water of 12 weight portions, is stirred Mix and slurry is carried out into closed ball milling process after being well mixed, after ball milling 3h, gained slurry high-speed stirred mixing 14h obtains expansion stone The composite mortar of ink load nano magnesia-boron nitride is standby;
(3)By step(1)Alloy powder, the step of gained(2)Gained slurry mixes with other residual components, in closed environment Secondary agitation is carried out, mixed slurry high-speed stirred is mixed into heated-air drying after 18h, completely remove moisture content, be broken into fine-powdered, i.e., .
By taking HT200 as an example, using method is the present embodiment:Ladle bottom pouring process adds respectively used in HT200 manufacture processes Enter the alterant of 0.45wt%, 0.60wt%, 0.80wt%, the casting liquid after Metamorphism treatment is poured and outpours sample, and specimen size is Φ 30mm × 300mm, and be respectively labeled as 1,2,3, the respective mechanical experimental results of the sample of the rotten agent contents of these three differences It is as follows:
Numbering 1 2 3
Tensile strength 248MPa 280MPa 323MPa

Claims (2)

1. a kind of aluminium antimony copper-Antaciron loads casting pig composite modifier and its preparation side of nano magnesia-boron nitride Method, it is characterised in that the alterant is made up of the raw material of following weight portion:Nano magnesia 1-2, nm-class boron nitride 2-3, aluminium powder It is 1-3, antimony powder 0.8-1, expanded graphite powder 3-5, copper powder 3-4, the ferrosilicon powder 4-6 that silicone content is 45%, aluminium-magnesium silicate 0.2-0.3, dense Spend ethanol water 20-25, the auxiliary agent 0.4-0.5 for 5-8%;
Described auxiliary agent is made up of the raw material of following weight portion:Potassium feldspar 2-3, lithium slag 1-3, Yttrium base rare earth inovulant 2-3, phosphorus Sour boron 0.5-0.8, carbon nano-fiber 2-3, sodium lignin sulfonate 1-2, organobentonite 2-3, water 15-20, preparation method is:First Sodium lignin sulfonate, organobentonite are thrown in water, 40-50min is thoroughly mixed, it is standby to make activating solution, subsequently by potassium Feldspar, lithium slag are crushed, and cross 80-120 mesh sieves, and in screenings input activating solution 1-2h is ground, and obtain activation potassium feldspar-lithium slag equal Slurry, other residual components are finally added to again activate in homogenate, and stirring mixing 2-3h obtains final product the compound of dopen Nano carbon fiber Auxiliary agent is bred in enhancing.
2. a kind of casting pig of aluminium antimony copper as claimed in claim 1-Antaciron load nano magnesia-boron nitride uses compound Alterant and preparation method thereof, its preparation method is:
(1)Put into after being first well mixed aluminium powder, copper powder, antimony powder, ferrosilicon in electric furnace, moulding by casting after melting, subsequently by gained Alloy breaks down, crosses 300-400 mesh sieves, obtains alloyed powder standby;
(2)Nano magnesia, nm-class boron nitride are mixed with expanded graphite powder, in putting into the ethanol water of 10-15 weight portions, Slurry is carried out into closed ball milling process after being uniformly mixed, after ball milling 2-3h, gained slurry high-speed stirred mixing 12-15h is obtained The composite mortar of expanded graphite supporting nano magnesia-boron nitride is standby;
(3)By step(1)Alloy powder, the step of gained(2)Gained slurry mixes with other residual components, in closed environment Secondary agitation is carried out, mixed slurry high-speed stirred is mixed into heated-air drying after 15-18h, completely remove moisture content, be broken into fine powder Shape, obtains final product.
CN201611150418.6A 2016-12-14 2016-12-14 Composite modifier, prepared through mixed loading of aluminum-antimony-copper-ferrosilicon alloy and nanometer magnesium oxide-boron nitride, for gray pig iron and preparation method of composite modifier Withdrawn CN106636864A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102994692A (en) * 2012-12-01 2013-03-27 云南昆钢重型装备制造集团有限公司 High-boron high-speed steel roller material and smelting process thereof
CN103757516A (en) * 2014-01-09 2014-04-30 北京工业大学 Wear-resisting white cast iron and preparation method thereof
CN105349893A (en) * 2015-10-15 2016-02-24 芜湖市宝艺游乐科技设备有限公司 Pre-hardened plastic die steel with oxidation corrosion resistance and high thermal stability and preparation method of pre-hardened plastic die steel
CN105349885A (en) * 2015-10-15 2016-02-24 芜湖市宝艺游乐科技设备有限公司 Pre-hardened plastic die steel high in thermal conductivity and easy to cut and polish and preparation method of pre-hardened plastic die steel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102994692A (en) * 2012-12-01 2013-03-27 云南昆钢重型装备制造集团有限公司 High-boron high-speed steel roller material and smelting process thereof
CN103757516A (en) * 2014-01-09 2014-04-30 北京工业大学 Wear-resisting white cast iron and preparation method thereof
CN105349893A (en) * 2015-10-15 2016-02-24 芜湖市宝艺游乐科技设备有限公司 Pre-hardened plastic die steel with oxidation corrosion resistance and high thermal stability and preparation method of pre-hardened plastic die steel
CN105349885A (en) * 2015-10-15 2016-02-24 芜湖市宝艺游乐科技设备有限公司 Pre-hardened plastic die steel high in thermal conductivity and easy to cut and polish and preparation method of pre-hardened plastic die steel

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