CN108690940A - A kind of high-intensity vacuum flue - Google Patents

A kind of high-intensity vacuum flue Download PDF

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Publication number
CN108690940A
CN108690940A CN201810625872.5A CN201810625872A CN108690940A CN 108690940 A CN108690940 A CN 108690940A CN 201810625872 A CN201810625872 A CN 201810625872A CN 108690940 A CN108690940 A CN 108690940A
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flue
aluminium alloy
component
vacuum
heat
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赵成军
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Chuzhou Huahai Zhongyi Industrial Furnace Co Ltd
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Chuzhou Huahai Zhongyi Industrial Furnace Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/56—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.7% by weight of carbon
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C21D1/28—Normalising
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B5/08—Arrangements of linings

Abstract

The present invention provides a kind of high-intensity vacuum flue, and mass percent is respectively shared by constituent and each ingredient:C:2.16~2.54%, Co:0.98~2.63%, Cr:13.25~16.75%, Si:0.51~1.21%, Mn:0.66~0.87%, Mo:1.08~1.15%, Cu:0.52~0.75%, Nb:0.42~1.21%, Ni:0.63~0.85%, V:0~0.5%, go bad component:0~0.3%, remaining is Fe.The present invention is using innovative component and method, component easily obtains, method is easy, the vacuum internal furnace of acquisition has outstanding mechanical strength, impact resistance and wear resistance and corrosion resistance, the fire resistance also having simultaneously, ensure that vacuum internal furnace will not cause defect to generate because of hot and cold alternation, being further ensured that still has outstanding leakproofness when long-time uses.

Description

A kind of high-intensity vacuum flue
Technical field
The invention belongs to vacuum drying oven fields, and in particular to a kind of high-intensity vacuum flue.
Background technology
Vacuum drying oven is that one kind utilizing vacuum system in furnace chamber(By vacuum pump, vacuum measuring device and vacuum valve etc. Element is by assembling)Furnace chamber inside points substance is discharged, pressure is made in furnace chamber to be less than a standard atmospheric pressure, it is empty in furnace chamber Between to realize vacuum state heating equipment.While in order to ensure that efficiently using for the energy, vacuum drying oven need to protect when not in use Cold state is held, therefore vacuum drying oven is in prolonged hot and cold alternation state, and the flue in vacuum drying oven is caused to be also easy to produce defect.
Therefore, it is those skilled in the art to develop a kind of vacuum drying oven flue that properties are outstanding in view of the above problems Institute's urgent need to solve the problem.
Invention content
To solve the above problems, the invention discloses a kind of high-intensity vacuum flues.
In order to achieve the above object, the present invention provides the following technical solutions:
Mass percent is respectively shared by a kind of high-intensity vacuum flue, constituent and each ingredient:C:2.16~ 2.54%,Co:0.98~2.63%, Cr:13.25~16.75%, Si:0.51~1.21%, Mn:0.66~0.87%, Mo:1.08~ 1.15%,Cu:0.52~0.75%, Nb:0.42~1.21%, Ni:0.63~0.85%, V:0~0.5%, go bad component:0~ 0.3%, remaining is Fe.
The present invention provides a kind of high-intensity vacuum flue, constituent include C, Co, Cr, Si, Mn, Mo, Cu, Nb, Ni, V, rotten component and Fe, wherein C can improve the impact flexibility of vacuum internal furnace entirety, but phosphorus content is excessively high to be also easy Defect is caused, therefore the mass percent of C is controlled 2.16~2.54%;Co be the heat-resisting, hard of production, anti-corrosion alloy it is important Raw material helps to promote the heat-resisting of flue, anti-corrosion and hardness;Cr can promote the corrosion resistance of flue entirety, while also can It is enough greatly to slow down its oxidation, it plays a good protective effect;Mn can promote content of pearlite in alloy, and then the tension for improving flue is strong Degree, but segregation is easy tod produce when Mn too high levels, ductile-brittle transition temperature is significantly improved, the moulding and tough of flue is reduced Property, therefore the content of Mn is controlled 0.66~0.87%;Si has strong inhibition Carbide Precipitation during bainite transformation The characteristics of, and stablize and refine austenite, increase the segregation of C and Mn, improves the quenching degree and toughness of flue;Nb energy The heat-resisting quantity and intensity for enough enhancing flue, make it become tough and tensile, while Nb also has special air drawing characteristics;Ni is strong increases Add quenching degree element, can fully improve the quenching degree and toughness of flue;Simultaneously micro V can assign flue some Particular function such as improves tensile strength and yield point.
Mesometamorphism component of the present invention is the combination of any one ingredient or arbitrary several ingredients in Ti, Ce and La, is added Add Ti as alterant, the corrosion resistance and intensity of flue can be increased;Ce is added as alterant, mainly using Ce as reduction Agent is added in aluminium alloy;La is added as alterant so that flue has certain ductility, improves the toughness of flue.
Its manufacturing method includes the following steps:
(1)Flue raw material melting:
Prepare flue raw material, and be put into melting in intermediate frequency furnace, and ensures in the aluminium alloy after melting each ingredient and shared Mass percent is as follows:C:2.16~2.54%, Co:0.98~2.63%, Cr:13.25~16.75%, Si:0.51~1.21%, Mn:0.66~0.87%, Mo:1.08~1.15%, Cu:0.52~0.75%, Nb:0.42~1.21%, Ni:0.63~0.85%, V: 0~0.5%, remaining is Fe;
(2)Aluminium alloy Metamorphism treatment:
To step(1)In add the component that goes bad in obtained aluminium alloy and carry out Metamorphism treatment;
(3)Flue is poured into a mould:
By step(2)It is middle to be poured into a mould after rotten aluminium alloy is warming up to 1400~1475 DEG C, form flue casting;
(4)Flue is heat-treated:
By step(3)The flue casting of acquisition naturally cools to 200 DEG C and is placed in heat-treatment furnace with stove heat, carries out at normalizing Reason;With stove heat to 1025~1175 DEG C, and keep the temperature 3~5h;Quenching treatment is carried out using water cooling, heat is placed in when being cooled to room temperature Temper is carried out in treatment furnace, is finally taken out and is placed in natural cooling in air.
Further, rotten component is the combination of any one ingredient or arbitrary several ingredients in Ti, Ce and La.
Further, rotten component is the combination of Ti, Ce and La, and each component accounts for the percentage of rotten component gross mass Than being respectively:35~55%, 25~40% and 15~25%.
Further, step(1)Middle flue raw material melting the specific steps are:
(1-a)Prepare flue raw material, and be put into intermediate frequency furnace and be warming up to 1420~1480 DEG C, keeps the temperature 0.5~1h;With laggard Row slag making and circuit bottom blowing carry out slag making using slag former, and bottom blown gas is blown into molten bath in stove by the nozzle by being placed in furnace bottom, Every square metre of wind speed of nozzle is controlled by computer in 0.6 ± 0.05m3/s, aluminium alloy is stirred for and carries out just refining;
(1-b)By step(1-a)In aluminium alloy that just refining is completed be de-gassed in vacuum or container full of inert gas, Deoxidation, desulfurization process remove the entrained components in aluminium alloy, complete refining.
Further, step(1-a)Middle slag former is medium high carbon submerged arc slag former;Bottom blown gas is N2Or Ar.
Further, mass percent shared by constituent and each ingredient is respectively:C:2.26~2.42%, Co: 1.56~2.18%, Cr:14.25~15.75%, Si:0.65~1 %, Mn:0.72~0.85%, Mo:1.09~1.12%, Cu: 0.55~0.72%, Nb:0.62~1.1%, Ni:0.72~0.82%, V:0.1~0.4%, go bad component:0.1~0.25%, remaining For Fe.
Compared with prior art, the present invention using innovative component and method, component easily obtains, method is easy, obtains The vacuum internal furnace obtained has outstanding mechanical strength, impact resistance and wear resistance and corrosion resistance, while the fire resistance also having, and ensures Vacuum internal furnace will not cause defect to generate because of hot and cold alternation, be further ensured that when long-time uses still have it is outstanding close Feng Xing.
Specific implementation mode
Technical solution provided by the invention is described in detail below with reference to specific embodiment, it should be understood that following specific Embodiment is only illustrative of the invention and is not intended to limit the scope of the invention.
Embodiment 1:
The present invention provides a kind of high-intensity vacuum flue, and mass percent is respectively shared by constituent and each ingredient:C: 2.16%,Co:0.98%,Cr:13.25%,Si:0.51%,Mn:0.66%,Mo:1.08%,Cu:0.52%,Nb:0.42%,Ni: 0.63%,V:0.1%, go bad component:0.1%, remaining is Fe;Rotten component is Ti.
Its manufacturing method includes the following steps:
(1-a)Prepare flue raw material, and be put into intermediate frequency furnace and be warming up to 1420 DEG C, keeps the temperature 0.5h;Then carry out slag making with Circuit bottom blowing carries out slag making using slag former, and bottom blown gas is blown into molten bath in stove by the nozzle by being placed in furnace bottom, and nozzle is every Square metre wind speed is controlled by computer in 0.6 ± 0.05m3/s, is stirred for aluminium alloy and is carried out just refining;Slag former is medium high carbon submerged arc Slag former;Bottom blown gas is N2;
(1-b)By step(1-a)In aluminium alloy that just refining is completed be de-gassed in vacuum or container full of inert gas, Deoxidation, desulfurization process remove the entrained components in aluminium alloy, complete to refine and ensure in the aluminium alloy after melting each ingredient and Shared mass percent is as follows:C:2.16%,Co:0.98%,Cr:13.25%,Si:0.51%,Mn:0.66%,Mo:1.08%,Cu: 0.52%,Nb:0.42%,Ni:0.63%,V:0.1%, go bad component:0.1%, remaining is Fe;
(2)Aluminium alloy Metamorphism treatment:
To step(1)In add the component that goes bad in obtained aluminium alloy and carry out Metamorphism treatment;
(3)Flue is poured into a mould:
By step(2)It is middle to be poured into a mould after rotten aluminium alloy is warming up to 1400 DEG C, form flue casting;
(4)Flue is heat-treated:
By step(3)The flue casting of acquisition naturally cools to 200 DEG C and is placed in heat-treatment furnace with stove heat, carries out at normalizing Reason;With stove heat to 1025 DEG C, and keep the temperature 3h;Quenching treatment is carried out using water cooling, is placed in heat-treatment furnace when being cooled to room temperature Temper is carried out, finally takes out and is placed in natural cooling in air.
Embodiment 2:
The present invention provides a kind of high-intensity vacuum flue, and mass percent is respectively shared by constituent and each ingredient:C: 2.54%,Co:2.63%,Cr:16.75%,Si:1.21%,Mn:0.87%,Mo:1.15%,Cu:0.75%,Nb:1.21%,Ni: 0.85%,V:0.48%, go bad component:0.29%, remaining is Fe;Rotten component is Ce.
Its manufacturing method includes the following steps:
(1-a)Prepare flue raw material, and be put into intermediate frequency furnace and be warming up to 1480 DEG C, keeps the temperature 1h;Then carry out slag making and electricity Road bottom blowing carries out slag making using slag former, and bottom blown gas is blown into molten bath in stove, nozzle is often put down by the nozzle by being placed in furnace bottom Square rice wind speed is controlled by computer in 0.6 ± 0.05m3/s, is stirred for aluminium alloy and is carried out just refining;Slag former is that medium high carbon submerged arc is made Slag agent;Bottom blown gas is N2Or Ar;
(1-b)By step(1-a)In aluminium alloy that just refining is completed be de-gassed in vacuum or container full of inert gas, Deoxidation, desulfurization process remove the entrained components in aluminium alloy, complete to refine and ensure in the aluminium alloy after melting each ingredient and Shared mass percent is as follows:C:2.54%,Co:2.63%,Cr:16.75%,Si:1.21%,Mn:0.87%,Mo:1.15%,Cu: 0.75%,Nb:1.21%,Ni:0.85%,V:0.48%, go bad component:0.29%, remaining is Fe;
(2)Aluminium alloy Metamorphism treatment:
To step(1)In add the component that goes bad in obtained aluminium alloy and carry out Metamorphism treatment;
(3)Flue is poured into a mould:
By step(2)It is middle to be poured into a mould after rotten aluminium alloy is warming up to 1475 DEG C, form flue casting;
(4)Flue is heat-treated:
By step(3)The flue casting of acquisition naturally cools to 200 DEG C and is placed in heat-treatment furnace with stove heat, carries out at normalizing Reason;With stove heat to 1175 DEG C, and keep the temperature 5h;Quenching treatment is carried out using water cooling, is placed in heat-treatment furnace when being cooled to room temperature Temper is carried out, finally takes out and is placed in natural cooling in air.
Embodiment 3:
The present invention provides a kind of high-intensity vacuum flue, and mass percent is respectively shared by constituent and each ingredient:C: 2.34%,Co:1.34%,Cr:14.75%,Si:0.82%,Mn:0.76%,Mo:1.1%,Cu:0.63%,Nb:0.85%,Ni: 0.77%,V:025%, go bad component:0.17%, remaining is Fe;Rotten component is the combination of Ti, Ce and La, and each component accounts for The percentage of rotten component gross mass is respectively 50%, 30% and 20%.
Its manufacturing method includes the following steps:
(1-a)Prepare flue raw material, and be put into intermediate frequency furnace and be warming up to 1420~1480 DEG C, keeps the temperature 0.5~1h;With laggard Row slag making and circuit bottom blowing carry out slag making using slag former, and bottom blown gas is blown into molten bath in stove by the nozzle by being placed in furnace bottom, Every square metre of wind speed of nozzle is controlled by computer in 0.6 ± 0.05m3/s, aluminium alloy is stirred for and carries out just refining;During slag former is High-carbon submerged arc slag former;Bottom blown gas is N2Or Ar;
(1-b)By step(1-a)In aluminium alloy that just refining is completed be de-gassed in vacuum or container full of inert gas, Deoxidation, desulfurization process remove the entrained components in aluminium alloy, complete to refine and ensure in the aluminium alloy after melting each ingredient and Shared mass percent is as follows:C:2.16~2.54%, Co:0.98~2.63%, Cr:13.25~16.75%, Si:0.51~ 1.21%,Mn:0.66~0.87%, Mo:1.08~1.15%, Cu:0.52~0.75%, Nb:0.42~1.21%, Ni:0.63~ 0.85%,V:0~0.5%, remaining is Fe;
(2)Aluminium alloy Metamorphism treatment:
To step(1)In add the component that goes bad in obtained aluminium alloy and carry out Metamorphism treatment;
(3)Flue is poured into a mould:
By step(2)It is middle to be poured into a mould after rotten aluminium alloy is warming up to 1400~1475 DEG C, form flue casting;
(4)Flue is heat-treated:
By step(3)The flue casting of acquisition naturally cools to 200 DEG C and is placed in heat-treatment furnace with stove heat, carries out at normalizing Reason;With stove heat to 1025~1175 DEG C, and keep the temperature 3~5h;Quenching treatment is carried out using water cooling, heat is placed in when being cooled to room temperature Temper is carried out in treatment furnace, is finally taken out and is placed in natural cooling in air.
The ingredient and method provided according to three above embodiment prepares vacuum internal furnace respectively, and is tested respectively, Pain crosses the vacuum internal furnace that embodiment 3 obtains, and impact resistance and fire resistance are the most outstanding, while its leakproofness retention time is most It is long;Secondly, test result of the embodiment 1 in three embodiments is slightly worse for embodiment 2, but also apparent outstanding existing vacuum drying oven Courage.
Finally, it should be noted that property technical side the above examples are only used to illustrate the technical scheme of the present invention and are not limiting Case, it will be understood by those of ordinary skill in the art that, those are modified or replaced equivalently technical scheme of the present invention, and The objective and range for not departing from the technical program, are intended to be within the scope of the claims of the invention.

Claims (7)

1. a kind of high-intensity vacuum flue, it is characterised in that:Mass percent is respectively shared by its constituent and each ingredient: C:2.16~2.54%, Co:0.98~2.63%, Cr:13.25~16.75%, Si:0.51~1.21%, Mn:0.66~0.87%, Mo:1.08~1.15%, Cu:0.52~0.75%, Nb:0.42~1.21%, Ni:0.63~0.85%, V:0~0.5%, go bad group Part:0~0.3%, remaining is Fe.
2. a kind of high-intensity vacuum flue according to claim 1, it is characterised in that:Its manufacturing method includes following step Suddenly:
(1)Flue raw material melting:
Prepare flue raw material, and be put into melting in intermediate frequency furnace, and ensures in the aluminium alloy after melting each ingredient and shared Mass percent is as follows:C:2.16~2.54%, Co:0.98~2.63%, Cr:13.25~16.75%, Si:0.51~1.21%, Mn:0.66~0.87%, Mo:1.08~1.15%, Cu:0.52~0.75%, Nb:0.42~1.21%, Ni:0.63~0.85%, V: 0~0.5%, remaining is Fe;
(2)Aluminium alloy Metamorphism treatment:
To step(1)In add the component that goes bad in obtained aluminium alloy and carry out Metamorphism treatment;
(3)Flue is poured into a mould:
By step(2)It is middle to be poured into a mould after rotten aluminium alloy is warming up to 1400~1475 DEG C, form flue casting;
(4)Flue is heat-treated:
By step(3)The flue casting of acquisition naturally cools to 200 DEG C and is placed in heat-treatment furnace with stove heat, carries out at normalizing Reason;With stove heat to 1025~1175 DEG C, and keep the temperature 3~5h;Quenching treatment is carried out using water cooling, heat is placed in when being cooled to room temperature Temper is carried out in treatment furnace, is finally taken out and is placed in natural cooling in air.
3. a kind of high-intensity vacuum flue according to claim 1, it is characterised in that:The rotten component be Ti, Ce with And in La any one ingredient or arbitrary several ingredients combination.
4. a kind of high-intensity vacuum flue according to claim 3, it is characterised in that:The rotten component be Ti, Ce with And the combination of La, and each component accounts for the percentage of rotten component gross mass and is respectively:35~55%, 25~40% and 15~ 25%。
5. a kind of high-intensity vacuum flue according to claim 2, it is characterised in that:The step(1)Middle flue raw material Melting the specific steps are:
(1-a)Prepare flue raw material, and be put into intermediate frequency furnace and be warming up to 1420~1480 DEG C, keeps the temperature 0.5~1h;With laggard Row slag making and circuit bottom blowing carry out slag making using slag former, and bottom blown gas is blown into molten bath in stove by the nozzle by being placed in furnace bottom, Every square metre of wind speed of nozzle is controlled by computer in 0.6 ± 0.05m3/s, aluminium alloy is stirred for and carries out just refining;
(1-b)By step(1-a)In aluminium alloy that just refining is completed be de-gassed in vacuum or container full of inert gas, Deoxidation, desulfurization process remove the entrained components in aluminium alloy, complete refining.
6. a kind of high-intensity vacuum flue according to claim 5, it is characterised in that:The step(1-a)Middle slag former For medium high carbon submerged arc slag former;The bottom blown gas is N2Or Ar.
7. a kind of high-intensity vacuum flue according to claim 1, it is characterised in that:Its constituent and each ingredient institute Accounting for mass percent is respectively:C:2.26~2.42%, Co:1.56~2.18%, Cr:14.25~15.75%, Si:0.65~1 %,Mn:0.72~0.85%, Mo:1.09~1.12%, Cu:0.55~0.72%, Nb:0.62~1.1%, Ni:0.72~0.82%, V:0.1~0.4%, go bad component:0.1~0.25%, remaining is Fe.
CN201810625872.5A 2018-06-18 2018-06-18 A kind of high-intensity vacuum flue Pending CN108690940A (en)

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN110527926A (en) * 2019-08-23 2019-12-03 徐州东坤耐磨材料有限公司 A kind of preparation method of anti-corrosive water pump blower inlet casing

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Application publication date: 20181023