CN104741595B - A kind of device and preparation method of cast time control preparing metal liquid face height - Google Patents
A kind of device and preparation method of cast time control preparing metal liquid face height Download PDFInfo
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- CN104741595B CN104741595B CN201510010718.3A CN201510010718A CN104741595B CN 104741595 B CN104741595 B CN 104741595B CN 201510010718 A CN201510010718 A CN 201510010718A CN 104741595 B CN104741595 B CN 104741595B
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- funnel
- alloy wire
- sand
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- resistant alloy
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Abstract
The present invention relates to directional solidification field, is the device and preparation method of a kind of cast time control preparing metal liquid face height.This apparatus structure is made up of the funnel and control circuit of built-in heat-resistant alloy wire.Heat-resistant alloy wire is built in hopper walls, and B alloy wire upper end exposed portion is connected with metallic binding post, and the surplus of certain length is left in lower end exposed portion, for controlling metal bath surface height.When the metal bath surface of cast reaches certain altitude, contact with heat-resistant alloy wire, make heat-resistant alloy wire, liquid metal, cooling copper dish, indicative electronic component and power supply form closed-loop path, indicative electronic component work.The present invention, the advantage that metal bath surface height devices are automatically controlled during cast is, in the muff heater of closing, when human eye cannot judge metal bath surface position, can effectively prevent molten metal from overflowing and damage body of heater graphite piece.
Description
Technical field
The present invention relates to directional solidification field, is the device and preparation method of a kind of cast time control preparing metal liquid face height.
Background technology
Directional solidification technique can preferably control solidified structure crystal grain orientation, eliminate transverse grain boundaries, obtain cylindrulite or monocrystalline
Tissue, improves the vertical mixing coefficient of material；Typical case application such as the production of aero-turbine high-temperature alloy blades, quasiconductor
Material, magnetic material, in the development of composite.
Directional solidification furnace is the most important equipment for realizing directional solidification technique, but due to the special construction of directional solidification furnace
And special solidification mode, when alloy is poured into a mould, formwork is stretched in muff heater, and muff heater upper end has funnel to hinder sight line,
Therefore casting process cannot be observed directly by body of heater observation port, it is generally the case that need substantially to calculate crucible before blow-on
Middle foundry alloy amount, this preparation before making blow-on become loaded down with trivial details；Alloy amount crosses that I haven't seen you for ages causes foundry goods misrun, causes whole
Productive experiment fails；Alloy amount is excessive, and unnecessary alloy can be caused to emerge from rising head, and this not only wastes the foundry alloy of costliness, more
Seriously it is splashed in graphite piece, causes the damage of whole body of heater, greatly increases production cost；By to having announced
Patent, these retrieval, find no the report for this cast time control preparing metal liquid face height devices.
During the present invention is to solve actual orientation solidification experiments, production, during cast, wayward metal bath surface is highly provided
The principle and device and the preparation method of device of a solution；According to the productive prospecting of directional solidification, when the metal of cast
Liquid level reach certain altitude, contact with the heating resisting metal silk for being built in funnel, make heating resisting metal silk, liquid metal, cool down copper dish,
Indicative electronic component and power supply form closed-loop path, and indicative electronic component work, i.e. metal bath surface reach desired height；Should
Device simple production process, can recycle, it is to avoid misrun defect；Both the waste of alloy had been reduced, graphite piece had been extended
Physical life.
The content of the invention
The present invention is the device of cast alloy time control preparing metal liquid face height, is made up of two parts：Built-in heat-resistant alloy wire
Funnel, control circuit；Spout of funnel can not submerge formwork rising head, and heat-resistant alloy wire is built in hopper walls, B alloy wire upper end dew
Go out part be connected with metallic binding post, the surplus of certain length is left in lower end exposed portion, should just can with formwork rising head in
The metal bath surface contact of desired height.
For the copper conductor wrapped up using high-temperature insulation material in control circuit, stove connects funnel upper end binding post respectively
With terminal pad and cooling copper dish and terminal pad, stove external plain conductor is sequentially connected power supply and indicative electronic component and connection
Disk, when the metal bath surface of cast reaches desired height, is contacted with heating resisting metal silk, makes heating resisting metal silk, liquid metal, cooling copper
Disk, indicative electronic component and power supply form closed-loop path, indicative electronic component work, that is, needed for reminding metal bath surface to reach
Highly.
The funnel material adopts resistant to elevated temperatures ceramic material, such as high purity aluminium oxide.
The heat resisting temperature of the heat-resistant alloy wire for being built in funnel is more than 1600 DEG C, and has plasticity and antioxidation
Property, such as Pt-Rh wire.
The heat-resistant alloy wire for being built in inner wall of hopper, in the surplus of filler neck lower end exposing surface 10 ~ 20cm length,
It is wound at filler neck, certain length is suitably expanded to according to required metal bath surface height.
The wire of the simple circuit, furnace interior wire answer resistance to 600 ~ 1000 DEG C of high temperature, and use high-temperature insulation material
Parcel, such as internal GN500 series fire-resisting cables for nickel wire；Connected using plain conductor outside body of heater, for example commonly
Copper conductor.
A kind of preparation method of the device of cast time control preparing metal liquid face height, including the funnel of built-in heat-resistant alloy wire
Preparation method, specially：Using the ceramic funnel of process for making shell manufacture of model casting, and during shell processed, in ceramic funnel
Intermediate layer heat-resistant alloy wire around the home.
Advantages of the present invention：The device simple production process, can recycle, it is to avoid misrun defect, and greatly
The waste for reducing alloy, extend the physical life of graphite piece.
Description of the drawings
Fig. 1 is the funnel schematic diagram of built-in heat-resistant alloy wire.
Fig. 2 is the schematic device for pouring into a mould time control preparing metal liquid face height.
In figure：1 filler neck part, 2 spout of funnels, 3 funnel lower end platinum rhodium 30,4 platinum rhodiums 30 around the home in filler neck, 5
Binding post, 6 directional solidification furnace bodies, 7 funnels, 8 muff heaters, 9 formworks, 10 cooling copper dish, 11 graphite charcoal felts,
The GN500-04 refratory threads of 121.5m length, 13 display lamps, 14 12V power supplys, 15 terminal pads, 16 molten metals, 17 rising heads, 18
The GN500-04 refratory threads of 1m length
Specific embodiment
The funnel of built-in heat-resistant alloy wire is 7.（As shown in Figure 1）Manufacture method：（1）Suppressed Lou using aluminum alloy mould
Bucket profile wax-pattern；（2）Wax-pattern is put into into the slurry that viscosity is 40 ~ 45s（Slurry does binding agent, high-purity corundum powder using Ludox
（Al2O3Content is more than 99wt%, 320 mesh of granularity）For powder, addition wetting agent, defoamer are prepared, according to Ludox with it is firm
Beautiful powder mass ratio 1：3 proportionings, wetting agent are pressed the 0.1%-0.5% of Ludox quality and are added；Defoamer presses Ludox quality
0.05%-0.02% is added；Similarly hereinafter）, in sand sprinkling machine, use the emergy of 100 mesh as surface layer, pocket knife shaves funnel upper and lower two
End sand, air-dries 5 ~ 8 hours；（3）Repeat step 2 is once；（4）Wax-pattern is put into into the slurry that viscosity is 30 ~ 35s, in sand sprinkling machine
Using the emergy of 80 mesh as excessive layer, funnel upper and lower ends sand is shaved, air-dried 5 ~ 8 hours；（5）Repeat step 4 is twice；
（6）By wax-pattern be put into viscosity be 30 ~ 35s slurry, by length for 80cm platinum rhodium 30 4. along hopper walls around the home, pitch exists
10cm, funnel upper end expose 5cm platinum rhodium 30, and funnel lower end exposes 30 20cm of platinum rhodium at spout of funnel 2. 5cm, in sand sprinkling machine
On use the corundum sand Stranguria sand of 80 mesh, shave funnel upper and lower ends sand, air-dry 5 ~ 8 hours；（7）Repeat step 4 is twice；（8）Will
Wax-pattern is put into the slurry that viscosity is 30 ~ 35s, and the corundum sand Stranguria sand of 36 mesh is used in sand sprinkling machine, shaves funnel upper and lower ends sand,
Air-dry 5 ~ 8 hours；（9）Repeat step 8,3 ~ 5 times；（10）Wax-pattern is put in dewaxing kettle and is dewaxed；（11）The formwork of wax will have been taken off
It is placed in sintering furnace, sinters at a temperature of 1200 DEG C.
5. 4. the 5cm platinum rhodium 30 that funnel upper end is exposed connect irony binding post, by the platinum rhodium 30 of funnel lower end 20cm
1. filament winding is put in filler neck part, according to metal bath surface desired height, 3. funnel lower end platinum rhodium 30 is drawn and puts certain position, position
In formwork rising head, contact when can rise to desired height with molten metal in formwork rising head just.
During installation, as shown in Fig. 2 7. the funnel of built-in heat-resistant alloy wire is placed on muff heater 8. upper end, funnel
2. mouth has the distance of 4cm with formwork rising head, molten metal is highly controlled at less than formwork rising head edge 1cm, therefore will leakage
3. bucket lower end platinum rhodium 30 draws puts less than at rising head edge 1cm；With termination on the GN500-04 refratory threads connection funnel of 1m length
Terminal 5. and terminal pad, with the GN500-04 refratory threads connection cooling copper dish of 1.5m length 10. and terminal pad, stove external copper conductor according to
Secondary connection 12V power supplys, display lamp；7. foundry alloy molten metal DD5 in crucible is poured slowly into into funnel, when metal bath surface reaches institute
Need height, contact 3. with heating resisting metal silk, make heating resisting metal silk 3., liquid metal, cool down copper dish 10., display lamp and power supply formed
Closed-loop path, display lamp light, i.e., molten metal reaches desired height.
Claims (7)
1. the device of a kind of cast time control preparing metal liquid face height, it is characterised in that：Described device is by built-in heat-resistant alloy wire
Funnel and control circuit composition；Spout of funnel can not submerge formwork rising head, and heat-resistant alloy wire is built in hopper walls, B alloy wire upper end
Exposed portion is connected with metallic binding post, and the surplus of certain length is left in lower end exposed portion, should just can be with formwork rising head
Needed for height metal bath surface contact；
For the copper conductor wrapped up using high-temperature insulation material in control circuit, stove connects funnel upper end binding post and company respectively
Flange and cooling copper dish and terminal pad, stove external plain conductor are sequentially connected power supply and indicative electronic component and terminal pad,
When cast metal bath surface reach desired height, contact with heat-resistant alloy wire, make heat-resistant alloy wire, liquid metal, cool down copper dish,
Indicative electronic component and power supply form closed-loop path, and indicative electronic component work remind metal bath surface high needed for reaching
Degree.
2. the device of a kind of cast time control preparing metal liquid face height as claimed in claim 1, it is characterised in that：Funnel material is adopted
Use high purity aluminium oxide.
3. the device of a kind of cast time control preparing metal liquid face height as claimed in claim 1, it is characterised in that：It is described to be built in
The heat-resistant alloy wire of funnel adopts Pt-Rh wire.
4. the device of a kind of cast time control preparing metal liquid face height as claimed in claim 1, it is characterised in that：It is described to be built in
The heat-resistant alloy wire of inner wall of hopper, in the surplus of filler neck lower end exposing surface 10～20cm length, is wound on filler neck
Place, is suitably expanded to certain length according to required metal bath surface height.
5. the device of a kind of cast time control preparing metal liquid face height as claimed in claim 1, it is characterised in that：The control electricity
The wire on road, furnace interior wire answer resistance to 600～1000 DEG C of high temperature, and with the GN500 series fire-resisting cable bags that inside is nickel wire
Wrap up in；Connected using common copper conductor outside body of heater.
6. the preparation method of the device of a kind of cast time control preparing metal liquid face height as claimed in claim 1, including it is built-in resistance to
The preparation method of the funnel of heat seal spun gold, it is characterised in that：Using the ceramic funnel of process for making shell manufacture of model casting, and in system
During shell, in ceramic funnel intermediate layer heat-resistant alloy wire around the home.
7. the preparation method of the device of a kind of cast time control preparing metal liquid face height as claimed in claim 6, it is characterised in that
The ceramic funnel of process for making shell manufacture of the utilization model casting, and during shell processed, it is resistance to around the home in ceramic funnel intermediate layer
Heat seal spun gold refers to：
(1) funnel profile wax-pattern is suppressed using aluminum alloy mould；
(2) wax-pattern is put into into the slurry that viscosity is 40～45s, the emergy of 100 mesh is used in sand sprinkling machine as surface layer, pocket knife
Funnel upper and lower ends sand is shaved, is air-dried 5～8 hours；
(3) repeat step 2 is once；
(4) wax-pattern is put into into the slurry that viscosity is 30～35s, in sand sprinkling machine, uses the emergy of 80 mesh as transition zone, scrape
Net funnel upper and lower ends sand, air-dries 5～8 hours；
(5) repeat step 4 is twice；
(6) wax-pattern is put into into the slurry that viscosity is 30～35s, by length for 80cm platinum rhodium 30 4. along hopper walls around the home, spiral shell
Away from 10cm, 5cm platinum rhodium 30 is exposed in funnel upper end, and funnel lower end exposes 30 20cm of platinum rhodium at spout of funnel 2. 5cm, is drenching
The corundum sand Stranguria sand of 80 mesh is used on sand machine, funnel upper and lower ends sand is shaved, is air-dried 5～8 hours；
(7) repeat step 4 is twice；
(8) wax-pattern is put into into the slurry that viscosity is 30～35s, the corundum sand Stranguria sand of 36 mesh is used in sand sprinkling machine, shave funnel
Upper and lower ends sand, air-dries 5～8 hours；
(9) repeat step 8,3～5 times；
(10) wax-pattern is put in dewaxing kettle and is dewaxed；
(11) formwork for having taken off wax is placed in sintering furnace, is sintered at a temperature of 1200 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510010718.3A CN104741595B (en) | 2015-01-09 | 2015-01-09 | A kind of device and preparation method of cast time control preparing metal liquid face height |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510010718.3A CN104741595B (en) | 2015-01-09 | 2015-01-09 | A kind of device and preparation method of cast time control preparing metal liquid face height |
Publications (2)
| Publication Number | Publication Date |
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| CN104741595A CN104741595A (en) | 2015-07-01 |
| CN104741595B true CN104741595B (en) | 2017-04-05 |
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| CN201510010718.3A Expired - Fee Related CN104741595B (en) | 2015-01-09 | 2015-01-09 | A kind of device and preparation method of cast time control preparing metal liquid face height |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5298887A (en) * | 1991-10-04 | 1994-03-29 | Sentech Corporation | Molten metal gauging and control system employing a fixed position capacitance sensor and method therefor |
| CN101905296A (en) * | 2010-08-20 | 2010-12-08 | 东北大学 | Device and method for controlling liquid level of liquid electroslag continuous casting slag pool |
| CN102554142A (en) * | 2012-01-14 | 2012-07-11 | 北京新方尊铸造科技有限责任公司 | Wireless measuring method for casting filling flow field |
| WO2013039446A1 (en) * | 2011-09-15 | 2013-03-21 | Agellis Group Ab | Level measurements in metallurgical vessels |
| CN104057060A (en) * | 2014-06-11 | 2014-09-24 | 烟台路通精密铝业有限公司 | In-casting-die metal liquid level position perception control system |
-
2015
- 2015-01-09 CN CN201510010718.3A patent/CN104741595B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5298887A (en) * | 1991-10-04 | 1994-03-29 | Sentech Corporation | Molten metal gauging and control system employing a fixed position capacitance sensor and method therefor |
| CN101905296A (en) * | 2010-08-20 | 2010-12-08 | 东北大学 | Device and method for controlling liquid level of liquid electroslag continuous casting slag pool |
| WO2013039446A1 (en) * | 2011-09-15 | 2013-03-21 | Agellis Group Ab | Level measurements in metallurgical vessels |
| CN102554142A (en) * | 2012-01-14 | 2012-07-11 | 北京新方尊铸造科技有限责任公司 | Wireless measuring method for casting filling flow field |
| CN104057060A (en) * | 2014-06-11 | 2014-09-24 | 烟台路通精密铝业有限公司 | In-casting-die metal liquid level position perception control system |
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| CN104741595A (en) | 2015-07-01 |
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Granted publication date: 20170405 Termination date: 20180109 |