CN109776100A - Vacuum induction melting coating - Google Patents
Vacuum induction melting coating Download PDFInfo
- Publication number
- CN109776100A CN109776100A CN201910138270.1A CN201910138270A CN109776100A CN 109776100 A CN109776100 A CN 109776100A CN 201910138270 A CN201910138270 A CN 201910138270A CN 109776100 A CN109776100 A CN 109776100A
- Authority
- CN
- China
- Prior art keywords
- refractory material
- reaction
- alloy
- induction melting
- vacuum induction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention discloses a kind of vacuum induction melting coatings, comprising: reaction clinker, refractory material adhesive and water, every 5 parts of reaction clinkers use 1-3 parts of refractory material adhesives；The additional amount of water are as follows: 3~8 parts of reaction clinkers and refractory material binder combination add 1 part of water.The contact and reaction of alloy molten solution with refractory material or ingot mould can be isolated in the present invention, improve the quality of hydrogen bearing alloy and the service life of ingot mould.
Description
Technical field
The present invention relates to a kind of technologies for producing hydrogen bearing alloy, specifically, are related to a kind of vacuum induction melting coating.
Background technique
Industrial production hydrogen bearing alloy is the most commonly used is intermediate frequency vacuum electromagnetic induction melting at present, and melting scale is from several public affairs
Jin is differed to several tons, and crucible is closed in a vacuum chamber, metal (rare earth, nickel, cobalt, manganese, the aluminium contained using electromagnetic induction in crucible
Deng) the interior vortex current heating furnace charge progress melting generated of conductor, the smelting of Metal and Alloy is carried out under vacuum conditions and is poured
Note, to obtain the hydrogen bearing alloy of high quality, the process of this production hydrogen bearing alloy is vacuum induction melting method.
Crucible is the important component of induction melting, is smelted for charging, and plays the work of insulation, insulation and transmitting energy
With.Crucible is generally divided into:
Alkaline crucible, material selection: CaO, MgO, ZrO2, BeO and ThO2；
Acid crucible, material selection: SiO2；
Neutral crucible, material selection: Al2O3, MgOAl2O3, ZrO2·SiO2。
When various metals induction thawings that crucible contains, alloying, refining, fractions in alloy melt stage with
Crucible contact surface reacts, and forms clinker, and the clinker of formation is difficult to react again with the molten condition alloy in crucible,
With high temeperature chemistry inertia.
The positions such as runner, drainage trough, upper tundish, lower tundish are all refractory materials in vaccum sensitive stove, and material is main
There are mullite, corundum, magnesia, graphite etc.；High-temperature fusion liquid metals activity is high, easily not with the main component of above-mentioned refractory piece
Come stone, corundum, magnesia, graphite etc. react slag making, reduce active constituent content in material, the impurity such as dregs are brought into alloy material
In material, material property is reduced.
Alloy molten solution is flowed out from crucible, and to finally solid is cooled to, during which alloy molten solution will pass through fire resistive material product
The drainage or guidance of (runner, drainage trough, upper tundish, lower tundish etc.), the alloy liquid and refractory material of molten condition connect
Because temperature is higher when touching, reacts in alloy liquid compared with active element and basis material, influence alloying component；Refractory material
It constantly reacts and loses with alloy molten solution contact portion, reduce the service life of refractory material.
Refractory material surface layer open pores are more, are easy to alloy and react and adhesion alloy, until cleaning refractory material
When the alloy of surface layer, refractory material surface layer and alloy contact part understand some refractory material and alloy adhesion, can follow alloy
It is detached from refractory material matrix together, to reduce the service life of refractory material.
When especially aluminium alloy being drained into ingot mould (cooling ingot mold or Self-cooling ingot mould), when continuous or mass production,
With ingot mould contact surface alloying reaction can occur for alloy molten solution, cause alloy pig not easy mold release；Alloy pig local chemical composition is different
Often；Reduce ingot mould service life.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of vacuum induction melting coating, which is coated on fire resisting
Material surface, or the coating is coated on to the ingot mould surface contacted with alloy molten solution, alloy molten solution and refractory material can be isolated
Or the contact and reaction of ingot mould, improve the quality of hydrogen bearing alloy and the service life of ingot mould.
Technical solution is as follows:
A kind of vacuum induction melting coating, comprising: reaction clinker, refractory material adhesive and water, every 5 parts of reactions clinker
Use 1-3 parts of refractory material adhesives；The additional amount of water are as follows: 3~8 parts of reaction clinkers and the addition of refractory material binder combination
1 part of water.
Further, the granularity of clinker is reacted less than 150 μm, and refractory material adhesive selects waterglass or aluminium dihydrogen phosphate
One kind or the two mixture.
Further, when vacuum induction melting production hydrogen bearing alloy, reaction slag composition is element contained by production hydrogen bearing alloy
Oxide.
Further, when vacuum induction melting production Nd Fe B alloys, reaction slag composition is contained by production Nd Fe B alloys
The oxide of element.
The technology of the present invention effect includes:
The present invention spreads on refractory surface, or coated on the ingot mould surface contacted with alloy molten solution, alloy can be isolated
The contact and reaction of melt and refractory material or ingot mould, alloy pig easy mold release in production process, improve the quality of hydrogen bearing alloy
With the service life of ingot mould.
1, ingot mould is usually metal material, and material has iron, mild steel, copper etc..In ingot mould essential element be iron and copper, iron and
Alloy of the copper relative to vacuum induction melting, it may be possible to impurity element.Alloy molten solution is contacted with ingot mould, from liquid cooled
To solid-state, cooling velocity is extremely important, and cooling fast high temperature solution and ingot mould time of contact are short, alloy molten solution and ingot mould reaction time
It is short；Cooling slow high temperature solution and ingot mould time of contact are long, and high temperature alloy melt and ingot mould reaction time are long, and ingot mould is by alloy molten solution
It corrodes serious；Be that the ingot mould surface of alloy contact coats the coating, high temperature solution be isolated with ingot mould, reduce high temperature solution with
The contact of ingot mould reduces the reaction of pyrosol and ingot mould, reduces the amount brought metallic element in ingot mould into alloy.
Generally logical recirculated cooling water cools down to ingot mould inside ingot mould, because reducing alloy molten solution corrodes ingot mould, prevents
Only alloy molten solution, which pours ingot mould wall, wears (alloy molten solution can explode with recirculated water vigorous reaction), improves ingot mould service life
Safety when casting is also improved simultaneously.
2, the coating is coated on the surface that refractory material and alloy molten solution contact, connecing for alloy molten solution and refractory material is isolated
Touching reduces rare earth element more active in alloy liquid and reacts with what basis material occurred, and reduction contains effective component in alloy
The influence of amount improves the stability of alloying component, reduces impurity element and impurity refractory material enters in alloy.
The refractory material and molten alloy contact portion of applying coating, be also not easy with alloy adhesion, in refractory surface
Because the alloy reacted and adhesion solidifies is few, in addition also easily the alloy of solidification and refractory material are separated, to improve fire resisting
The service life of material.
Specific embodiment
Be described below and specific embodiments of the present invention be fully shown, with enable those skilled in the art to practice and
It reproduces.
Vacuum induction melting coating, comprising: reaction clinker, refractory material adhesive in crucible, every 5 parts of reactions clinker
Use 1-3 parts of refractory material adhesives；React clinker granularity less than 150 μm, refractory material adhesive select waterglass or
One kind or the two mixture of aluminium dihydrogen phosphate.In coating in use, needing that clinker will be reacted, refractory material adhesive mixes
And add water and stir, the additional amount of water are as follows: 3~8 parts of reaction clinkers, refractory material adhesives add 1 part of water.
1, when vacuum induction melting production hydrogen bearing alloy, in furnace after Chou Zhen Kong≤8Pa, vacuum or filling with inert gas protection,
Part of oxygen is not extracted inside furnace chamber, and furnace chamber inner wall and surface of material also adsorb certain oxygen, and metal is being heated and is melting
Melt the stage, oxide is become by dioxygen oxidation unpumped in furnace chamber, such as lanthanum sesquioxide, ceria, nickel oxide, titanium dioxide
Manganese etc..The all slag making in crucible of this partial oxide, become clinker.
When crucible is alumina crucible, the rare earth element added in melt stage, hydrogen bearing alloy is easy to crucible and occurs such as
Inferior reaction.It reacts the oxides such as lanthanum sesquioxide, the ceria generated and is completely formed clinker.
La+Al2O3→Al+La2O3
3Ce+2Al2O3→2Al+3CeO2
When crucible is magnesia crucible, the rare earth element added in hydrogen bearing alloy is easy to crucible and such as inferior reaction occurs.
It reacts the oxides such as lanthanum sesquioxide, the ceria generated and is completely formed clinker.
2La+3MgO→3Mg+La2O3
Ce+2MgO→2Mg+CeO2
In conclusion slag composition predominantly produces hydrogen bearing alloy in crucible when vacuum induction melting produces hydrogen bearing alloy
The oxide of contained element.
2, when vacuum induction melting production Nd Fe B alloys, in furnace after Chou Zhen Kong≤8Pa, vacuum or filling with inert gas are protected
Shield, part of oxygen is not extracted inside furnace chamber, and furnace chamber inner wall and surface of material also adsorb certain oxygen, metal being heated and
Melt stage becomes oxide by dioxygen oxidation unpumped in furnace chamber, such as praseodymium oxide/neodymium, ceria, iron oxide, oxidation
Boron etc..The all slag making in crucible of this partial oxide, become clinker.
When crucible is alumina crucible, the rare earth element added in melt stage, Nd Fe B alloys is easy to crucible
Such as inferior reaction.Praseodymium oxide/neodymium/the cerium etc. generated is reacted, oxide is completely formed clinker.
Pr+Al2O3→Al+Pr2O3
Nd+Al2O3→Al+Nd2O3
3Ce+2Al2O3→2Al+3CeO2
When crucible is magnesia crucible, the rare earth element added in Nd Fe B alloys is easy to crucible and occurs as inferior anti-
It answers.It reacts the oxides such as lanthanum sesquioxide, the ceria generated and is completely formed clinker.
2Pr+3MgO→3Mg+Pr2O3
2Nd+3MgO→3Mg+Nd2O3
Ce+2MgO→2Mg+CeO2
In conclusion slag composition predominantly produces neodymium iron boron in crucible when vacuum induction melting produces Nd Fe B alloys
The oxide of element contained by alloy.
3, waterglass is commonly called as sodium silicate, is a kind of water-soluble silicate, and aqueous solution is commonly called as waterglass, is a kind of mine bonding
Agent.Its chemical formula is R2O·nSiO2, R in formula2O is alkali metal oxide, and n is silica and alkali metal oxide molal quantity
Ratio, the referred to as number that rubs of waterglass.Waterglass physics and chemistry feature: cohesive force is strong, intensity is higher, acid resistance, heat resistance.
Aluminium dihydrogen phosphate is thermosetting material, and coking mechanism belongs to polycondensation combination, decomposes when heated, is dehydrated and polymerize.It burns
Following reaction will occur for aluminium dihydrogen phosphate during knot:
2Al(H2PO4)3→Al2(H2P2O7)3+3H2O
When vacuum induction melting hydrogen bearing alloy, the reaction clinker in crucible is crushed to 150 μm or less；Add in reaction clinker
Add appropriate refractory material adhesive, is uniformly mixed a small amount of water of addition；In coating in use, needing that clinker, refractory material will be reacted
Adhesive is mixed and is added water and stirred, the additional amount of water are as follows: 3~8 parts of reaction clinkers, refractory material adhesives add 1 part of water.
Refractory material adhesive is one or two kinds of mixtures of waterglass or aluminium dihydrogen phosphate aqueous solution, specific mixing ratio
Example is shown in Table 1.
1 mixture partition of table
Mixture is coated on refractory material or ingot mould surface, the refractory material or ingot mould for being coated with coating will by heating
Water discharge.
After adhesive in coating loses crystallization water hardening, coating itself has stronger mechanical strength and heat resistance, applies
Layer and refractory material or ingot mould have stronger binding force.It is coated with the refractory material or ingot mould of the coating, it is molten to be put into vacuum induction
In use, the time that vacuum induction melting furnace reaches required vacuum degree can be extended because containing moisture in coating in furnace, in order to
Reduce influence to the required vacuum degree time is reached, make to coat cated refractory material using following several schemes, hardening and
It is dry:
1. coating cated refractory material or ingot mould naturally dry, or it is heated and is dried, drying temperature 100-
200℃。
2. refractory material is heated to 80-150 DEG C before applying coating, then mixture is coated and refractory material table
Face, temperature is higher, the moisture evaporation in coating and refractory material it is faster.For the water further allowed in coating and refractory material
Point volatilization is clean, and the refractory material that can be coated with coating carries out heating, drying again, and 100-200 DEG C of drying temperature.
The processing mode of refractory material before and after 2 applying coating of table
Term used herein is explanation and term exemplary, and not restrictive.Since the present invention can be with a variety of
Form be embodied without departing from invention spirit or essence, it should therefore be appreciated that above-described embodiment be not limited to it is any above-mentioned
Details, and should widely explaining within the spirit and scope of the appended claims, thus fall into claim or its etc.
Whole change and modification in effect range all should be appended claims and be covered.
Claims (4)
1. a kind of vacuum induction melting coating characterized by comprising reaction clinker, refractory material adhesive and water, every 5
Part reaction clinker uses 1-3 parts of refractory material adhesives；The additional amount of water are as follows: 3~8 parts of reaction clinkers and refractory material adhesive
Mixture adds 1 part of water.
2. vacuum induction melting coating as described in claim 1, which is characterized in that react the granularity of clinker less than 150 μm, it is resistance to
Fiery material adhesive selects one kind or the two mixture of waterglass or aluminium dihydrogen phosphate.
3. vacuum induction melting coating as described in claim 1, which is characterized in that vacuum induction melting produces hydrogen bearing alloy
When, reaction slag composition is the oxide for producing element contained by hydrogen bearing alloy.
4. vacuum induction melting coating as described in claim 1, which is characterized in that vacuum induction melting produces Nd Fe B alloys
When, reaction slag composition is the oxide for producing element contained by Nd Fe B alloys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910138270.1A CN109776100A (en) | 2019-02-25 | 2019-02-25 | Vacuum induction melting coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910138270.1A CN109776100A (en) | 2019-02-25 | 2019-02-25 | Vacuum induction melting coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109776100A true CN109776100A (en) | 2019-05-21 |
Family
ID=66487469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910138270.1A Pending CN109776100A (en) | 2019-02-25 | 2019-02-25 | Vacuum induction melting coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109776100A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113213969A (en) * | 2021-04-19 | 2021-08-06 | 杭州电子科技大学 | Pretreatment method of crucible for smelting sintered neodymium iron boron and preparation method of sintered neodymium iron boron |
| CN115231916A (en) * | 2022-07-13 | 2022-10-25 | 西安西工大思强科技股份有限公司 | Magnesium aluminate spinel forming crucible and manufacturing method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003185346A (en) * | 2001-12-21 | 2003-07-03 | Sumitomo Metal Ind Ltd | Crucible for melting rare earth alloy |
| CN101498549A (en) * | 2009-03-16 | 2009-08-05 | 北京航空航天大学 | Crucible with Y2O3 anti-corrosion coating and method for producing Y2O3 anti-corrosion coating by slip-casting shaping process |
| CN102212711A (en) * | 2011-06-08 | 2011-10-12 | 鞍山鑫普新材料有限公司 | Method for treating hydrogen storage alloy waste residues |
| CN104748548A (en) * | 2013-12-30 | 2015-07-01 | 比亚迪股份有限公司 | High-temperature smelting pot and processing method and application thereof |
| CN105749810A (en) * | 2014-12-15 | 2016-07-13 | 江阴泰富沥青有限公司 | Feeding system of insulation reaction vessel for asphalt |
| CN108546437A (en) * | 2018-05-07 | 2018-09-18 | 中国科学院宁波材料技术与工程研究所 | A kind of antifouling paint, preparation method and application based on solid waste resource |
-
2019
- 2019-02-25 CN CN201910138270.1A patent/CN109776100A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003185346A (en) * | 2001-12-21 | 2003-07-03 | Sumitomo Metal Ind Ltd | Crucible for melting rare earth alloy |
| CN101498549A (en) * | 2009-03-16 | 2009-08-05 | 北京航空航天大学 | Crucible with Y2O3 anti-corrosion coating and method for producing Y2O3 anti-corrosion coating by slip-casting shaping process |
| CN102212711A (en) * | 2011-06-08 | 2011-10-12 | 鞍山鑫普新材料有限公司 | Method for treating hydrogen storage alloy waste residues |
| CN104748548A (en) * | 2013-12-30 | 2015-07-01 | 比亚迪股份有限公司 | High-temperature smelting pot and processing method and application thereof |
| CN105749810A (en) * | 2014-12-15 | 2016-07-13 | 江阴泰富沥青有限公司 | Feeding system of insulation reaction vessel for asphalt |
| CN108546437A (en) * | 2018-05-07 | 2018-09-18 | 中国科学院宁波材料技术与工程研究所 | A kind of antifouling paint, preparation method and application based on solid waste resource |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113213969A (en) * | 2021-04-19 | 2021-08-06 | 杭州电子科技大学 | Pretreatment method of crucible for smelting sintered neodymium iron boron and preparation method of sintered neodymium iron boron |
| CN113213969B (en) * | 2021-04-19 | 2022-06-28 | 杭州电子科技大学 | Pretreatment method of crucible for smelting sintered neodymium iron boron and preparation method of sintered neodymium iron boron |
| CN115231916A (en) * | 2022-07-13 | 2022-10-25 | 西安西工大思强科技股份有限公司 | Magnesium aluminate spinel forming crucible and manufacturing method thereof |
| CN115231916B (en) * | 2022-07-13 | 2023-08-15 | 西安西工大思强科技股份有限公司 | Magnesia-alumina spinel forming crucible and manufacturing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108821785A (en) | A kind of coating against binding slags for hot-rolling heating furnace water beam heat preservation lining | |
| CN109776100A (en) | Vacuum induction melting coating | |
| US5716426A (en) | Methods of processing aluminium dross and aluminium dross residue into calcium aluminate | |
| CN113292321A (en) | Steel ladle low-carbon working lining brick | |
| CN100494413C (en) | Melted iron desulfuration pretreatment furnace slag modifier and method for making same | |
| CN114716850A (en) | Water gap coating for continuous casting of rare earth steel and preparation method thereof | |
| CN106493321A (en) | Steel-making tundish covering flux and preparation method thereof | |
| CN113185306A (en) | Method for preparing high-resistance aluminum-chromium brick by doping zirconium boride | |
| KR970009993B1 (en) | Ceramic welding process and powder mixture for use in the same | |
| JPS63117947A (en) | Molten steel vessel | |
| CN101550465A (en) | Manganese-based fluxing agent for converter steelmaking and preparation method thereof | |
| CN102839292A (en) | Aluminum iron alloy with ultra-low carbon, ultra-low titanium and high silicon contents for deoxidizing aluminum silicon killed steel and manufacturing method of aluminum iron alloy | |
| JPH01136924A (en) | Continuous melting of steel | |
| CN109704793A (en) | The application method of vacuum induction melting production hydrogen bearing alloy coating | |
| CN107640962A (en) | A kind of Ausmelt copper smelters alumina chrome brick and preparation method thereof | |
| CA1321075C (en) | Additive for promoting slag formation in steel refining ladle | |
| CN105669220B (en) | A kind of Ausmelt furnace liner regeneration alumina chrome brick and preparation method thereof | |
| CN111394538A (en) | Converter and furnace lining thereof and preparation method | |
| CN102851453B (en) | Composite refining slag for special-shaped blank molten steel smelting, and preparation method and application thereof | |
| CN102206085A (en) | Novel furnace lining material used for smelting copper alloy and preparation method thereof | |
| KR100935612B1 (en) | Method For Recovering High Carbon and Low Carbon Ferro Alloy From Spent Manganese Dust Using Leading Passage | |
| CN1059364C (en) | Pouring protective slag for electric slag centrifugal casting | |
| CN108570533B (en) | A kind of deoxidation slag charge suitable for Si killed steel | |
| CN101709353B (en) | Composite sulfur removal material for cast iron and preparation method thereof | |
| CN1078451A (en) | Utilize ferro-alloy cinder to produce the method for fire resistive material product |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190521 |
|
| RJ01 | Rejection of invention patent application after publication |