CN103540775B - For nickel-32% molybdenum master alloy preparation method of melting TA10 ingot casting - Google Patents
For nickel-32% molybdenum master alloy preparation method of melting TA10 ingot casting Download PDFInfo
- Publication number
- CN103540775B CN103540775B CN201310471854.3A CN201310471854A CN103540775B CN 103540775 B CN103540775 B CN 103540775B CN 201310471854 A CN201310471854 A CN 201310471854A CN 103540775 B CN103540775 B CN 103540775B
- Authority
- CN
- China
- Prior art keywords
- nickel
- molybdenum
- bits
- frequency induction
- melting
- 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.)
- Active
Links
Abstract
A kind of nickel-32% molybdenum master alloy preparation method for melting TA10 ingot casting is provided, pure nickel rod and molybdenum bar is lathed respectively and considers shape thing to be worth doing and to heat oven dry; Masterbatch nickel bits through drying being added in the crucible of medium-frequency induction furnace, molybdenum bits being added the secondary charging bucket be placed in medium-frequency induction furnace simultaneously; Start to add hot smelting by when being evacuated to 0.6 ~ 0.1Pa in medium-frequency induction furnace again; Be warming up to 1800 DEG C-1900 DEG C, insulation 15-20 minute, observe when masterbatch nickel bits melting rate is more than 45%, start to add molybdenum bits, be filled with argon gas and carry out gas shield, continue intensification and ensure that temperature reaches 1900 DEG C, insulation 20-30 minute, makes the impurity in liquation fully float up to weld pool surface; Finally solution-cast is entered cover half, be then cooled to room temperature.Pure nickel and pure molybdenum are directly prepared by the present invention becomes master alloy, reduces the fusing point of nickel-molybdenum alloy, adds all deficiencies of master alloy when making up traditional melting TA10 ingot casting.
Description
Technical field
The invention belongs to master alloy technical field, be specifically related to a kind of nickel-32% molybdenum master alloy preparation method for melting TA10 ingot casting.
Background technology
Master alloy is as the important additive of a kind of metallurgy industry, and when its role is to melting containing the alloy that different melting points is very large, pre-prepared master alloy is lower than the fusing point of pure element, ensures that Addition ofelements melts mutually.When tradition melting TA10 ingot casting, general employing adds Ti-32Mo, pure nickel bar or nickel bits, carries out element balance.Make a general survey of whole adding procedure, there is following drawback: 1, pure metal element adds, and certainly will there is segregation situation, add nickel bar or nickel bits, the density of nickel is comparatively large, can not ensure its mobility, therefore can cause local or microsegregation, artificial distributing technique be required strict; 2, Ti-32Mo master alloy, general employing consumable electrode vacuum furnace preparation, because self-consuming furnace temperature rise is certain, Mo self fusing point is high, density large, very large with titanium sponge fusing point, density variation, therefore melting is very poor in preparation process, segregation degree is well imagined, again because self is higher containing Mo amount, the follow-up amount as the interpolation of TA10 master alloy is few, even if so control even during cloth, also cannot microsegregation be avoided again.Aforesaid method distributing technique difficulty is large, due to needs twice interpolation, could meet alloying constituent requirement, therefore be proposed higher requirement to operator's sense of responsibility, people's engine efficiency etc., is therefore necessary to improve.
Summary of the invention
The technical problem that the present invention solves: a kind of nickel-32% molybdenum master alloy preparation method for melting TA10 ingot casting is provided, pure nickel and pure molybdenum are directly prepared and becomes master alloy, reduce the fusing point of nickel-molybdenum alloy, when making up traditional melting TA10 ingot casting, add all deficiencies of master alloy.
The technical solution used in the present invention: for the nickel molybdenum master alloy preparation method of melting TA10 ingot casting, comprise the steps:
1) pure nickel rod and molybdenum bar are lathed the bits shape thing that thickness is 1-2mm respectively, then bits shape thing good for turning are put into respectively hammer mill and be broken into the nickel bits and molybdenum bits that length is 5-20mm; Nickel bits and molybdenum bits are carried out cleaning, oil removing puts into drying shed after also naturally drying, heat to 75 DEG C, be incubated and dry for 12 hours;
2) the masterbatch nickel bits through drying being added in the crucible of medium-frequency induction furnace, molybdenum bits being added the secondary charging bucket be placed in medium-frequency induction furnace simultaneously;
3) start to add hot smelting by when being evacuated to 0.6 ~ 0.1Pa in medium-frequency induction furnace;
4) 1500 DEG C-1700 DEG C are warming up to, insulation 15-20 minute, observe when masterbatch nickel bits melting rate is more than 45%, start to add molybdenum bits, and be filled with argon gas and carry out gas shield, continue to heat up and ensure that temperature is at 1900 DEG C, insulation 20-30 minute, makes the impurity in liquation fully float up to weld pool surface;
5) solution-cast is entered cover half, be then cooled to room temperature.
Above-mentioned steps 2) in, described medium-frequency induction furnace adopts serial-resonant medium-frequency induction furnace, its inversion device is IGBT module, and ruhmkorff coil design adopts anti-and around technology, the design power of ruhmkorff coil and the error of actual motion power are not more than 5%.
The present invention's advantage compared with prior art:
1, the medium frequency induction melting furnace of serial-resonant (IGBT) is adopted, its inversion device is a kind of New IGBT module (insulated gate bipolar transistor, Germany produces), it is mainly used in melting general carbon steel, steel alloy, cast steel, relatively non-ferrous metal hard to tolerate etc.It has, and burn-off rate is fast, energy-conservation, higher harmonic pollutes the advantages such as low.Coil design is in conjunction with the actual service condition of induction furnace, according to electromagnetic field principle, the preferred version determined by the calculating of computer professional software, adopt up-to-date coil anti-and around technology (two induction coil is in parallel), better gathering magnetic field, improve magnetic field agitation power, the design power of ruhmkorff coil and the error of actual motion power are not more than 5%, the insulation of coil, particularly turn-to-turn insulation adopts advanced insulation processing way to ensure, special tensioning technique can reduce the axial vibration of coil effectively;
2, nickel-molybdenum alloy is a kind of mechanical mixture alloy, and have under the prerequisite not changing original metal lattice and performance, the feature that fusing point is lower, fusing point is about 1380 DEG C, is more conducive to the utilization of subsequent handling;
3, smelting preparation process determines that nickel-molybdenum alloy uniform ingredients, foreign matter content are lower, and adopt vacuum intermediate-frequency stove, fusion process itself is primary purification process; In reasonable offer process, topmost impurity is the oxide compound of nickel and molybdenum, and follow-up fusion process is difficult to be melted, and mostly is refractory compound and remains among material; The wherein oxide compound NiO of nickel, density is 6.6g/cm
3, fusing point is 1984 DEG C, but under vacuum conditions, 300 DEG C are heated ten minutes, can reduce and become metallic nickel; The oxide compound two kinds of molybdenum is molybdic oxide and molybdenum dioxide, molybdic oxide density 4.692g/cm
3left and right, the density of molybdenum dioxide is 6.44g/cm
3, the two can transform under certain condition mutually, and molybdenum dioxide is refractory compound, but because its density ratio mother alloy density is little, so under continuous function composite by electromagnetic stirring, molten bath upper surface can be floated up to impurity, adopt the melting of vacuum intermediate-frequency stove thus, inherently primary purification process;
4, Ni-Mo32% (Mo content 32%) composition, once add and just can reach the requirement of theory T A10 Chemical Composition, people's engine efficiency is higher, more convenient, workable;
5, equipment self has variable frequency electromagnetic stirring, and (density of Mo is 10.2g/cm to two kinds of pure metal density
3, the density of Ni is 8.9g/cm
3, Ni-Mo32% alloy density is 9.2g/cm
3) closely, cause liquation circulation, melting good, the segregation problems in master alloy preparation process can be solved from root;
6, after melting terminates, specification carries out turnery processing as requested.
Embodiment
Below in conjunction with description a kind of embodiment of the present invention.
For nickel-32% molybdenum master alloy preparation method of melting TA10 ingot casting, comprise the steps:
1) pure nickel rod and molybdenum bar are lathed the bits shape thing that thickness is 1-2mm respectively, then bits shape thing good for turning are put into respectively hammer mill and be broken into the nickel bits and molybdenum bits that length is 5-20mm; Nickel bits and molybdenum bits are carried out cleaning, oil removing puts into drying shed after also naturally drying, heat to 75 DEG C, be incubated and dry for 12 hours; Be the relatively uniform bits shape of length, thickness by raw material turning, contribute to reducing energy consumption, ensure that the melting of two kinds of metals in fusion process, uniformity coefficient are better;
2) the masterbatch nickel bits through drying being added in the crucible of medium-frequency induction furnace, molybdenum bits being added the secondary charging bucket be placed in medium-frequency induction furnace simultaneously; Described medium-frequency induction furnace adopts serial-resonant Medium frequency induction to melt, and its inversion device is IGBT module, and ruhmkorff coil design adopts anti-and around technology, the design power of ruhmkorff coil and the error of actual motion power are not more than 5%;
3) start to add hot smelting by when being evacuated to 0.6 ~ 0.1Pa in medium-frequency induction furnace;
4) 1500 DEG C-1700 DEG C are warming up to, insulation 15-20 minute, observe when masterbatch nickel bits melting rate is more than 45%, start to add molybdenum bits, and be filled with argon gas and carry out gas shield, continue intensification and ensure that temperature reaches 1900 DEG C, insulation 20-30 minute, makes the impurity in liquation fully float up to weld pool surface;
5) solution-cast is entered cover half, be then cooled to room temperature.
Single stove charging capacity is about 50kg, because charging capacity is less, equipment self has variable frequency electromagnetic stirring, two kinds of pure metal density closely, therefore, liquation circulation, melting are good, can solve the segregation problems in master alloy preparation process from root, after melting terminates, specification can carry out turnery processing as requested.
Nickel-molybdenum alloy forms angle from alloy, is exactly a kind of simple mechanical mixture.Mechanical mixture is the class complex phase mixture tissue in alloy, and different Xiang Junke is combined to form mechanical mixture mutually.Mechanical mixture can be formed by between pure metal, also by pure metal and compound, pure metal and sosoloid, sosoloid and sosoloid and can be formed between sosoloid and compound.In mechanical mixture, two constituent elements forming alloy can not dissolve in the solid state mutually, formation compound can not be reacted each other again, respectively in mechanical mixture, still keep original lattice and performance, the performance of mechanical mixture is between the phase performance of composition, and industrial most of alloy forms by mixture, the fusing point comparatively constituent element fusing point reduction of mechanical mixture, in preparation process, through the fusing point about 1380 DEG C of measuring and calculating nickel molybdenum master alloy.
Principle of work: utilize the principle of Frequency Induction Heating to melt under vacuum, a helix tube type ruhmkorff coil is had in stove, when ruhmkorff coil connects electric current of intermediate frequency, produce alternating magnetic field, metallic nickel bits and molybdenum bits induce electromotive force under the influence of a magnetic field, produce ring current, due to surface action, (surface action is skin effect again, when exchange current is by conductor, electric current will concentrate on conductive surface and flow through, this phenomenon is surface action, that curtage is when conducting in the conductor with the electronics that frequency is higher, total conductor top layer can be gathered in, but not be evenly distributed in the sectional area of whole conductor), metal outer is made to have very high current density, thus produce powerful heat effect, make nickel and molybdenum heating until fusing.Meanwhile, in molten bath, there is the induction stirring of some strength, each uniform composition and temperature equilibrium can be promoted, make the trace impurity in raw material merge, grow up and float.
Routine is prepared alloy and is adopted consumable electrode vacuum furnace (VGA), needs pre-prepared electrode, then electrode is carried out welding melting.The temperature rise of self-consuming furnace is certain, and be about 1700 DEG C, main operational principle utilizes high-temperature electric arc to carry out Metal Melting, cannot carry out being incubated and the overall induction stirring operation in molten bath (can only stirring the transverse-electromagnetic that arc light molten bath part is carried out among a small circle).Pre-prepared electrode difficulty is higher, needs molybdenum bar and nickel rod to carry out tying up, welding according to theoretical proportions, because molybdenum fusing point exceeds self-consuming furnace temperature rise, can not carry out heat retaining operation again, so certainly will cause that melting is uneven, segregation, even to exist with not fusant state.Need repeatedly melt back, just likely produce a desired effect; Three meltings of usual needs just can reach melts effect completely, but upper, middle and lower 3 chemical compositions differ greatly.
For traditional technology, we have employed vacuum medium frequency induction furnace, evade the technique bottleneck of electrode preparation difficulty, equipment self temperature rise is higher, raw material specification is controlled, molten bath is overall can carry out induction stirring (hump effect), can energy efficient to a great extent, make alloying constituent more even, people's engine efficiency is higher, and vacuum intermediate-frequency stove fusion process inherently primary purification process, the chemical composition providing strong both macro and micro for follow-up melting ensures.
Above-described embodiment, just preferred embodiment of the present invention, is not used for limiting the scope of the present invention, therefore all equivalence changes done with content described in the claims in the present invention, all should be included within the claims in the present invention scope.
Claims (1)
1., for nickel-32% molybdenum master alloy preparation method of melting TA10 ingot casting, it is characterized in that comprising the steps:
1) pure nickel rod and molybdenum bar are lathed the bits shape thing that thickness is 1-2mm respectively, then bits shape thing good for turning are put into respectively hammer mill and be broken into the nickel bits and molybdenum bits that length is 5-20mm; Nickel bits and molybdenum bits are carried out cleaning, oil removing puts into drying shed after also naturally drying, heat to 75 DEG C, be incubated and dry for 12 hours;
2) the masterbatch nickel bits through drying being added in the crucible of medium-frequency induction furnace, molybdenum bits being added the secondary charging bucket be placed in medium-frequency induction furnace simultaneously; Described medium-frequency induction furnace adopts serial-resonant Medium frequency induction to melt, and its inversion device is IGBT module, and ruhmkorff coil design adopts anti-and around technology, the design power of ruhmkorff coil and the error of actual motion power are not more than 5%;
3) start to add hot smelting by when being evacuated to 0.6 ~ 0.1Pa in medium-frequency induction furnace;
4) 1800 DEG C-1900 DEG C are warming up to, insulation 15-20 minute, observe when masterbatch nickel bits melting rate is more than 45%, start to add molybdenum bits, and be filled with argon gas and carry out gas shield, continue to heat up and ensure that temperature is at 1900 DEG C, insulation 20-30 minute, makes the impurity in liquation fully float up to weld pool surface;
5) solution-cast is entered cover half, be then cooled to room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310471854.3A CN103540775B (en) | 2013-10-10 | 2013-10-10 | For nickel-32% molybdenum master alloy preparation method of melting TA10 ingot casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310471854.3A CN103540775B (en) | 2013-10-10 | 2013-10-10 | For nickel-32% molybdenum master alloy preparation method of melting TA10 ingot casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103540775A CN103540775A (en) | 2014-01-29 |
| CN103540775B true CN103540775B (en) | 2016-03-16 |
Family
ID=49964619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310471854.3A Active CN103540775B (en) | 2013-10-10 | 2013-10-10 | For nickel-32% molybdenum master alloy preparation method of melting TA10 ingot casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103540775B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105483411B (en) * | 2015-12-11 | 2018-01-02 | 西北工业大学 | Ni-based five yuan of intermediate alloys of the constituent element containing high-melting-point and preparation method thereof |
| CN107739891B (en) * | 2017-10-20 | 2019-11-12 | 宝钛集团有限公司 | A kind of nickel molybdenum intermediate alloy is preparing the application in ErNiCrMo-3 alloy |
| CN108754200A (en) * | 2018-08-28 | 2018-11-06 | 马林生 | A kind of nickel molybdenum intermediate alloy preparation process |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1091474A (en) * | 1993-02-16 | 1994-08-31 | 鞍山市科学技术咨询中心铁塔厂分部 | Alloy for hot-dip preservative coat zinc-nickel master alloy and melting thereof |
| KR20010058382A (en) * | 1999-12-27 | 2001-07-05 | 한기석 | Ti―Ni―Mo system memory alloy |
| JP5146640B2 (en) * | 2007-05-23 | 2013-02-20 | 三菱マテリアル株式会社 | Ni-Mo alloy welding wire |
| CN100547095C (en) * | 2007-07-05 | 2009-10-07 | 沈阳天贺新材料开发有限公司 | The technology of TiNi shape memory alloy smelting ultra-pure |
| CN102534326A (en) * | 2010-12-23 | 2012-07-04 | 龙南龙钇重稀土科技股份有限公司 | Rare earth nickel magnesium intermediate alloy for hydrogen storage alloy and preparation method of rare earth nickel magnesium intermediate alloy |
-
2013
- 2013-10-10 CN CN201310471854.3A patent/CN103540775B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103540775A (en) | 2014-01-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102965529B (en) | Preparation method of short-process titanium alloy Ti-Ni-Nb | |
| CN101469370B (en) | Method for manufacturing large-sized high purity 12Cr% low-ilicon low-aluminum electroslag remelting steel ingot | |
| CN103757514A (en) | High-entropy AlCoCrFeNiCuC alloy and preparation method thereof | |
| CN106350683A (en) | Method for preparing CuCr contact materials by means of vacuum self-consuming arc melting | |
| CN103725895B (en) | Containing pre-melt of aluminium titaniferous high alloy steel round blank remelting electroslag and preparation method thereof | |
| CN109355517A (en) | A kind of big size ingot-casting method of smelting in the ultralow gap of niti-shaped memorial alloy | |
| CN103290230A (en) | Preparation method for nickel-based high temperature alloy by using electron beam melting | |
| CN112267029B (en) | Smelting method for controlling element burning loss of nickel-based alloy electroslag ingot of high-aluminum titanium | |
| JP2022536401A (en) | Precipitation-strengthened nickel-based high-chromium superalloy and its production method | |
| CN103556004B (en) | A kind of K438 of employing revert prepares the preparation method of K438 alloy | |
| CN103540775B (en) | For nickel-32% molybdenum master alloy preparation method of melting TA10 ingot casting | |
| CN106755724B (en) | A kind of smelting technology being suitable for 3 tons of intermediate frequency furnace production nodulizers | |
| CN109913910B (en) | Method for preparing ferrotitanium alloy by carbon thermal-electrolysis of ilmenite | |
| CN105274365A (en) | Titanium alloy preparation technology | |
| CN106756203B (en) | A kind of preparation method of fine grain chromium-bronze | |
| CN102659110B (en) | Method for directionally solidifying and purifying polycrystalline silicon by adopting ferro-silicon alloy | |
| CN112725631B (en) | Medium-high fluorine slag system for electroslag remelting rotor steel ingot containing B and use method | |
| CN106884110A (en) | A kind of method that high vacuum electric arc furnaces prepares nickel base superalloy | |
| CN105734302A (en) | GH4169 alloy steel electroslag remelting refining slag and method for performing electroslag re-melting on GH4169 alloy steel | |
| CN105950882B (en) | A kind of remelting refining slag and its for the electro-slag re-melting method to the high Ti steel alloys of high Al | |
| CN103526038B (en) | A kind of high-strength high-plasticity TWIP steel esr production method | |
| CN106283122A (en) | Electrolytic furnace | |
| CN102899510A (en) | Production method of high-purity metal vanadium | |
| CN105803253A (en) | Production process of alloy for producing high-power power generator rotor slot wedge | |
| CN106048302A (en) | Casting material for nuclear power and wind power and manufacture method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |