CN110512090A - A kind of processing method of the general scull of the more materials of electron beam cold hearth melting furnace - Google Patents
A kind of processing method of the general scull of the more materials of electron beam cold hearth melting furnace Download PDFInfo
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- CN110512090A CN110512090A CN201910743774.6A CN201910743774A CN110512090A CN 110512090 A CN110512090 A CN 110512090A CN 201910743774 A CN201910743774 A CN 201910743774A CN 110512090 A CN110512090 A CN 110512090A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/16—Remelting metals
- C22B9/22—Remelting metals with heating by wave energy or particle radiation
- C22B9/228—Remelting metals with heating by wave energy or particle radiation by particle radiation, e.g. electron beams
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
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Abstract
The present invention discloses a kind of processing method of the general scull of more materials of electron beam cold hearth melting furnace, comprising the following steps: and one, be changed without scull after current material raw material melting, prepare material feedstock fusion；Two, it opens electron gun electron beam graph to be set as covering whole scull ranges, the current material whole clout on scull top around molten bath is melted；Three, jump to evacuation step, melt the melt in the molten bath of cold bed region and be first discharged into refining cold bed region, melt along flowing be discharged into and shunt cold bed and crucible, empty to until runner mouth position or less cannot be discharged；Four, material raw material blanking fusion is taken, the material raw material fusion of fusing fills rapidly each region cold bed；Five, evacuation step is jumped to, the melt liquid of material fusion is discharged into crucible, empties to runner mouth position or less；Six, it repeats step 4 step 52 ~ 3 times, so that scull upper components reach the ingredient of material fusion；Seven, it is transferred to normal smelting step, carries out the continuous blanking and melting of material raw material fusion.
Description
Technical field
The present invention relates to a kind of technologies of preparing of electron-beam smelting ingot casting, and in particular to a kind of electron beam cold hearth melting furnace is more
The processing method of the general scull of material.
Background technique
Electron-beam cold bed furnace melting (EBCHM) is under vacuum conditions, to be carried out using the heat that beam bombardment generates high
The vacuum smelting equipment of warm refractory metal melting and purification.The smelting efficiency of electron beam cold hearth melting is high, can the big rule of melting acquisition
Circular ingot, the slab ingot of lattice.For high temperature refractories such as such as titanium, zirconium, niobiums, by electron beam cold hearth melting obtain ingot casting and
Corresponding processing material, has high-efficient, at low cost, high-quality advantage, has at present been in gradually to substitute becoming for traditional smelting technology
Gesture.
It is equipped with water cooling solid brass bed in electron beam furnace, is generally divided into fusing cold bed, refining cold bed, shunts cold bed and crucible area
Domain, beam bombardment formation temperature field is so that melt flow stream passes through each region crystalline forming.During melt flows with each area
It is separated with scull between the water cooling solid brass bed in domain, also there is scull protection at runner, the high temperature to avoid electron beam or melt is straight
Cold bed injury device is contacted, pollution of the cooling bed material for melt raw material is also avoided.
The electron-beam cold bed furnace that industrial production uses is mostly in 2400KW or more, to pursue big specification, high efficiency and long melting
Period, cold bed and scull are in big specification trend development.Large-sized cold bed scull, the surface area for refining removal of impurities is bigger, refining effect
Fruit is more preferable, while can have longer melting cycle to carry out more heat meltings, it is not necessary to which cold bed is cleared up in frequent blow-on, to improve effect
Rate promotes production capacity.Larger specification electron-beam cold bed furnace scull weight reaches nearly 2000Kg.
Currently, industry, which generallys use every kind of trade mark, needs a kind of scull, and in addition to single scull is at high cost, the gold of the different trades mark
The melting of category or alloy, needs to carry out the switching of scull, production cost higher cost.The switching of scull will to vacuum melting room into
The broken empty deflation of row, and working chamber is cleared up, the scull of the corresponding trade mark is replaced later.Production operation is nearly identical to conventional prepurging mistake
Journey, replacement process and preparation process is often 48 hours time-consuming or more before vacuumizing equal meltings again influence production capacity very big.Scull
Most of under water cooling condition in melting is still solid-state, and only small part includes in the molten bath above scull, and in molten bath exhausted big portion
It is divided into the raw material of fusing, therefore schematic diagram by certain process as shown in Figure 1, can replace the scull material in molten bath
Ingredient, so that the switching melting trade mark is possibly realized without changing scull.The general procedure process for realizing scull, then can be improved
10 tons of -50 tons of production capacities when switching material every time, while also reducing scull material cost itself and cleaning replacement cost.
Summary of the invention
To solve the above problems, the present invention provides a kind of processing side of the general scull of more materials of electron beam cold hearth melting furnace
Method, this method utilizes beam energy in the setting and corresponding smelting technology of different zones, so that the difference of similar metal
Alloy can be changed without scull in same melting cycle and carry out continuous melting, reduce scull and prepare quantity, reduce cost, together
When avoid blowing out replace scull, reduce stokehold prepare, significantly improve production efficiency.
The present invention is achieved through the following technical solutions:
A kind of processing method of the general scull of more materials of electron beam cold hearth melting furnace, mainly comprises the steps that
Step 1: material raw material preparation fusion:
It is changed without scull after current material raw material melting, prepares the raw material that 300-500Kg waits for melt material；
Step 2: scull is cleared up:
Electron gun is opened, cleanup step is jumped to, electron beam graph is set as covering whole scull ranges, and electron gun is all by molten bath
Enclose the current material whole clout fusing on scull top；
Step 3: molten bath empties:
Evacuation step is jumped to, that is, opens electron beam graph energy at each runner mouth, the melt melted in the molten bath of cold bed region is first
It is discharged into refining cold bed region, is emptied to until runner mouth position or less cannot be discharged, cold bed regional Electronic beam figure will be refined
Shape is set as narrow bar in evacuation step, melt along flowing be discharged into and shunt cold bed and crucible, equally empty to runner mouth position
Until cannot being discharged below；
Step 4: material melting sources fusion:
Electron gun keeps high emission electric current, jumps to fusing step, takes the material raw material fusion of 100-200Kg in step 1 from original
Expect entrance blanking, the material raw material fusion of fusing fills rapidly each region cold bed, and fusing finishes；
Step 5: molten bath empties:
Evacuation step is jumped to, the melt liquid of material fusion in molten bath is discharged into crucible in order, empties to runner mouth position
It sets following；
Step 6: repeated melting and emptying:
Step 4 and step 52 ~ 3 times are repeated, so that scull upper components reach the ingredient of material fusion；
Step 7: normal smelting:
It is transferred to normal smelting step, carries out the continuous blanking and melting of material raw material fusion.
It further, is mixed bulk cargo state to the raw material of melt material in the step 1.
Further, in the step 4 material raw material fusion in a manner of feeding vertical from feed(raw material)inlet fast blanking.
Further, electron gun parameter and cold bed molten bath keep 5-15min after melting in the step 4.
The beneficial effects of the present invention are:
(1) conventional melting produces different metals raw material, needs to make corresponding more set sculls, and uses more materials of the invention
The method that matter shares scull, can save the cost of wherein one or more sets sculls；
(2) replacement of scull needs blowing out to deflate in the prior art, needs to vacuumize baker after replacement again, and the time of consuming exists
24 hours or more, on production capacity influence it is very big, and use share scull method, by 1 ~ 2 hour operation can continuous production,
Greatly improve production efficiency；
(3) operation of the present invention is simple, can complete this by the setting of electron gun technological parameter and multiple blanking and emptying
The operation of method, production application are easy；
(4) quality of melting ingot casting of the present invention is unaffected, and only top small part is melted among cold bed molten bath scull, in molten bath
The overwhelming majority is the material raw material fusion of fusing, is melted and is emptied by multiple blanking, molten bath can be made to reach needs
The ingredient of material fusion can't have an impact in subsequent continuous smelting；
It deflates and replacement scull in conclusion the present invention may be implemented to be not required to blow-on between the meltings of a variety of unlike material raw materials,
Can direct continuous smelting, reduce the cost of scull significantly, improve production efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of general scull；
Fig. 2 is 6/200/3600 type electron-beam cold bed furnace cold bed schematic diagram of ALD EBCHR of the present invention.
Specific embodiment
A kind of processing method of the general scull of more materials of electron beam cold hearth melting furnace, mainly comprises the steps that
Step 1: material raw material preparation fusion:
It is changed without scull after current material raw material melting, prepares the raw material that 300-500Kg waits for melt material；
Step 2: scull is cleared up:
Electron gun is opened, cleanup step is jumped to, electron beam graph is set as covering whole scull ranges, and electron gun is all by molten bath
Enclose the current material whole clout fusing on scull top；
Step 3: molten bath empties:
Evacuation step is jumped to, that is, opens electron beam graph energy at each runner mouth, the melt melted in the molten bath of cold bed region is first
It is discharged into refining cold bed region, is emptied to until runner mouth position or less cannot be discharged, cold bed regional Electronic beam figure will be refined
Shape is set as narrow bar in evacuation step, melt along flowing be discharged into and shunt cold bed and crucible, equally empty to runner mouth position
Until cannot being discharged below；
Step 4: material melting sources fusion:
Electron gun keeps high emission electric current, jumps to fusing step, takes the material raw material fusion of 100-200Kg in step 1 from original
Expect entrance blanking, the material raw material fusion of fusing fills rapidly each region cold bed, and fusing finishes；
Step 5: molten bath empties:
Evacuation step is jumped to, the melt liquid of material fusion in molten bath is discharged into crucible in order, empties to runner mouth position
It sets following；
Step 6: repeated melting and emptying:
Step 4 and step 52 ~ 3 times are repeated, so that scull upper components reach the ingredient of material fusion；
Step 7: normal smelting:
It is transferred to normal smelting step, carries out the continuous blanking and melting of material raw material fusion.
It further, is mixed bulk cargo state to the raw material of melt material in the step 1.
Further, in the step 4 material raw material fusion in a manner of feeding vertical from feed(raw material)inlet fast blanking.
Further, electron gun parameter and cold bed molten bath keep 5-15min after melting in the step 4.
The following is a clear and complete description of the technical scheme in the embodiments of the invention.
Embodiment 1: pure titanium skull melting TA10
Step 1: material raw material preparation fusion:
It is changed without scull after pure titanium melting, prepares 300-500KgTA10 material raw material, TA10 material raw material uses sponge
Titanium, Ti-Mo intermediate alloy and the uniform mixing of nickel sheet, suppress and organize welding electrode, and the raw material that melting incipient stage 300Kg is used is not
The mixing bulk cargo state of electrode pressing, feeding prepares in a manner of rotary drum；
Step 2: scull is cleared up:
Electron gun is opened, cleanup step is jumped into, electron beam graph is whole scull ranges, and 1 ~ 4# Emission Current In An Electron Gun is respectively
8.0A, 8.0A, 7.5A and 7.0A melt the pure titanium whole clout on scull top around molten bath；
Step 3: molten bath empties:
Evacuation step is jumped to, that is, opens electron beam graph energy at each runner mouth, melt in the molten bath of cold bed region is melted and is discharged into
Cold bed region is refined, is emptied to until runner mouth position or less cannot be discharged, refining cold bed regional Electronic beam figure is existed
Evacuation step is set as narrow bar, and then flowing, which is discharged into, shunts cold bed and crucible, and emptying to runner mouth position or less cannot be discharged
Until；
Step 4: material melting sources fusion:
Electron gun processing step jumps into fusing step, 1 ~ 6# Emission Current In An Electron Gun be respectively 9.0A, 9.0A, 7.5A, 7.0A,
8.0A and 8.0A, TA10 raw material bulk cargo quick a small amount of and gradation blanking about 100Kg in a manner of rotary drum, melt is filled rapidly after fusing
Each region cold bed, electron gun parameter and cold bed molten bath keep 10min later；
Step 5: molten bath empties:
Evacuation step is jumped to, the melt liquid of TA10 material in molten bath is discharged into crucible in order, empties to runner mouth position
It sets following；
Step 6: repeated melting and emptying
The 4th step and the 5th step 2 times are repeated, so that scull upper components reach the ingredient of TA10 material；
Step 7: normal smelting
It is transferred to normal smelting step, carries out the continuous blanking and melting of TA10 material raw material.
The chemical component test result such as table 1 of the TA10 ingot casting of melting production.
The chemical component test result of 1 TA10 ingot casting of table
Embodiment 2: pure titanium skull melting TC4
Step 1: material raw material preparation fusion:
Scull is changed without after pure titanium melting, TC4 material raw material uses titanium sponge, AlV intermediate alloy and the uniform mixing of aluminium shot,
Welding electrode is suppressed and organizes, the raw material that melting incipient stage 400Kg is used is the mixing bulk cargo state of not electrode pressing, with rotary drum side
Formula feeding prepares；
Step 2: scull is cleared up:
Electron gun is opened, cleanup step is jumped into, electron beam graph is whole scull ranges, and 1 ~ 4# Emission Current In An Electron Gun is respectively
8.5A, 8.5A, 7.5A and 7.0A melt the pure titanium whole clout on scull top around molten bath；
Step 3: molten bath empties:
Evacuation step is jumped to, that is, opens electron beam graph energy at each runner mouth, melt in the molten bath of cold bed region is melted and is discharged into
Cold bed region is refined, is emptied to until runner mouth position or less cannot be discharged, refining cold bed regional Electronic beam figure is existed
Evacuation step is set as narrow bar, and then flowing, which is discharged into, shunts cold bed and crucible, and emptying to runner mouth position or less cannot be discharged
Until；
Step 4: material melting sources fusion:
Electron gun processing step jumps into fusing step, 1 ~ 6# Emission Current In An Electron Gun be respectively 9.2A, 9.2A, 7.5A, 7.0A,
8.0A and 8.0A, TC4 raw material bulk cargo quick a small amount of and gradation blanking about 120Kg in a manner of rotary drum, melt is filled rapidly after fusing
Each region cold bed, electron gun parameter and cold bed molten bath keep 5min later；
Step 5: molten bath empties:
Evacuation step is jumped to, the melt liquid of TC4 material in molten bath is discharged into crucible in order, empties to runner mouth position
Below；
Step 6: repeated melting and emptying
Step 4 and step 52 times are repeated, so that scull upper components reach the ingredient of TC4 material；
Step 7: normal smelting
It is transferred to normal smelting step, carries out the continuous blanking and melting of TC4 material raw material.
The chemical component test result such as table 2 of the TC4 ingot casting of melting production.
The chemical component test result of 2 TC4 ingot casting of table
The pure titanium of embodiment 3:TC4 alloy skull melting TA2
Step 1: material raw material preparation fusion:
Scull is changed without after TC4 alloy melting, TA2 material raw material uses titanium sponge and the uniform mixing of titanium dioxide, melting
The raw material used is the mixing bulk cargo state of not electrode pressing, and feeding prepares in a manner of rotary drum；
Step 2: scull is cleared up:
Electron gun is opened, cleanup step is jumped into, electron beam graph is whole scull ranges, and 1 ~ 4# Emission Current In An Electron Gun is respectively
9.0A, 9.0A, 7.5A and 7.0A melt the TC4 alloy whole clout on scull top around molten bath；
Step 3: molten bath empties:
Evacuation step is jumped to, that is, opens electron beam graph energy at each runner mouth, melt in the molten bath of cold bed region is melted and is discharged into
Cold bed region is refined, is emptied to until runner mouth position or less cannot be discharged, refining cold bed regional Electronic beam figure is existed
Evacuation step is set as narrow bar, and then flowing, which is discharged into, shunts cold bed and crucible, and emptying to runner mouth position or less cannot be discharged
Until；
Step 4: material melting sources fusion:
Electron gun processing step jumps into fusing step, 1 ~ 6# Emission Current In An Electron Gun be respectively 9.5A, 9.5A, 7.5A, 7.0A,
8.2A and 8.2A, TA2 raw material bulk cargo quick a small amount of and gradation blanking about 150Kg in a manner of rotary drum.Melt is filled rapidly after fusing
Each region cold bed, electron gun parameter and cold bed molten bath keep 15min later；
Step 5: molten bath empties:
Evacuation step is jumped to, the melt liquid of TA2 material in molten bath is discharged into crucible in order, empties to runner mouth position
Below；
Step 6: repeated melting and emptying
Step 4 and step 53 times are repeated, so that scull upper components reach the ingredient of TA2 material；
Step 7: normal smelting
It is transferred to normal smelting step, carries out the continuous blanking and melting of TA2 material raw material.The chemistry of the TA2 ingot casting of melting production
Composition test result such as table 3.
The chemical component test result of 3 TA2 ingot casting of table
The present invention is applicable not only to titanium or titanium alloy scull and shares, and is applied equally to the electron beam of the refractory metals such as zirconium, nickel, tungsten
Scull shares in melting.Fig. 2 is a form of electron beam cold hearth melting furnace cold bed schematic layout pattern, and this method is also applied for it
Prepared by the scull of his various forms cold hearth melting furnace, cost can be significantly reduced.
The basic principles, main features and advantages of the invention have been shown and described above, and the technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention, the claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (4)
1. a kind of processing method of the general scull of more materials of electron beam cold hearth melting furnace, it is characterised in that: mainly include following step
It is rapid:
Step 1: material raw material preparation fusion:
It is changed without scull after current material raw material melting, prepares the raw material that 300-500Kg waits for melt material；
Step 2: scull is cleared up:
Electron gun is opened, cleanup step is jumped to, electron beam graph is set as covering whole scull ranges, and electron gun is all by molten bath
Enclose the current material whole clout fusing on scull top；
Step 3: molten bath empties:
Evacuation step is jumped to, that is, opens electron beam graph energy at each runner mouth, the melt melted in the molten bath of cold bed region is first
It is discharged into refining cold bed region, is emptied to until runner mouth position or less cannot be discharged, cold bed regional Electronic beam figure will be refined
Shape is set as narrow bar in evacuation step, melt along flowing be discharged into and shunt cold bed and crucible, equally empty to runner mouth position
Until cannot being discharged below；
Step 4: material melting sources fusion:
Electron gun keeps high emission electric current, jumps to fusing step, takes the material raw material fusion of 100-200Kg in step 1 from original
Expect entrance blanking, the material raw material fusion of fusing fills rapidly each region cold bed, and fusing finishes；
Step 5: molten bath empties:
Evacuation step is jumped to, the melt liquid of material fusion in molten bath is discharged into crucible in order, empties to runner mouth position
It sets following；
Step 6: repeated melting and emptying:
Step 4 and step 52 ~ 3 times are repeated, so that scull upper components reach the ingredient of material fusion；
Step 7: normal smelting:
It is transferred to normal smelting step, carries out the continuous blanking and melting of material raw material fusion.
2. the processing method of the general scull of a kind of more materials of electron beam cold hearth melting furnace according to right 1, it is characterised in that:
In the step 1 to the raw material of melt material be mixed bulk cargo state.
3. the processing method of the general scull of a kind of more materials of electron beam cold hearth melting furnace according to right 1, it is characterised in that:
Material raw material fusion is in a manner of feeding vertical from feed(raw material)inlet fast blanking in the step 4.
4. the processing method of the general scull of a kind of more materials of electron beam cold hearth melting furnace according to right 1, it is characterised in that:
Electron gun parameter and cold bed molten bath keep 5-15min after melting in the step 4.
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Citations (7)
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|---|---|---|---|---|
| US4961776A (en) * | 1988-07-11 | 1990-10-09 | Axel Johnson Metals, Inc. | Cold hearth refining |
| US6007597A (en) * | 1997-02-28 | 1999-12-28 | Teledyne Industries, Inc. | Electron-beam melt refining of ferroniobium |
| US20100154421A1 (en) * | 2007-05-25 | 2010-06-24 | Carrier Corporation | Rankine system with gravity-driven pump |
| US20120024718A1 (en) * | 2001-07-16 | 2012-02-02 | Foret Plasma Labs, Llc | Method for treating a substance with wave energy from plasma and an electrical arc |
| CN102618733A (en) * | 2012-03-26 | 2012-08-01 | 洛阳双瑞精铸钛业有限公司 | Smelting recovery method for pure titanium waste blocks |
| CN103014374A (en) * | 2012-11-16 | 2013-04-03 | 云南钛业股份有限公司 | Process for establishing kish on smelting cold bed of EB (Electronic Beam) furnace |
| CN103667734A (en) * | 2013-11-25 | 2014-03-26 | 攀枝花云钛实业有限公司 | Method for smelting pure titanium to manufacture ingot heads by using electron beam cold bed smelting furnace |
-
2019
- 2019-08-13 CN CN201910743774.6A patent/CN110512090B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4961776A (en) * | 1988-07-11 | 1990-10-09 | Axel Johnson Metals, Inc. | Cold hearth refining |
| US6007597A (en) * | 1997-02-28 | 1999-12-28 | Teledyne Industries, Inc. | Electron-beam melt refining of ferroniobium |
| US20120024718A1 (en) * | 2001-07-16 | 2012-02-02 | Foret Plasma Labs, Llc | Method for treating a substance with wave energy from plasma and an electrical arc |
| US20100154421A1 (en) * | 2007-05-25 | 2010-06-24 | Carrier Corporation | Rankine system with gravity-driven pump |
| CN102618733A (en) * | 2012-03-26 | 2012-08-01 | 洛阳双瑞精铸钛业有限公司 | Smelting recovery method for pure titanium waste blocks |
| CN103014374A (en) * | 2012-11-16 | 2013-04-03 | 云南钛业股份有限公司 | Process for establishing kish on smelting cold bed of EB (Electronic Beam) furnace |
| CN103667734A (en) * | 2013-11-25 | 2014-03-26 | 攀枝花云钛实业有限公司 | Method for smelting pure titanium to manufacture ingot heads by using electron beam cold bed smelting furnace |
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