CN1167527C - Heating casting mold and gas film continuous casting method - Google Patents
Heating casting mold and gas film continuous casting method Download PDFInfo
- Publication number
- CN1167527C CN1167527C CNB011130261A CN01113026A CN1167527C CN 1167527 C CN1167527 C CN 1167527C CN B011130261 A CNB011130261 A CN B011130261A CN 01113026 A CN01113026 A CN 01113026A CN 1167527 C CN1167527 C CN 1167527C
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- Prior art keywords
- casting
- mold
- casting mold
- rod
- gas
- Prior art date
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- Expired - Fee Related
Links
- 238000005266 casting Methods 0.000 title claims abstract description 98
- 238000009749 continuous casting Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000010438 heat treatment Methods 0.000 title claims abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000007789 gas Substances 0.000 claims abstract description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 11
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000010687 lubricating oil Substances 0.000 claims abstract description 7
- 229910052786 argon Inorganic materials 0.000 claims abstract description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 29
- 239000010439 graphite Substances 0.000 claims description 29
- 238000010899 nucleation Methods 0.000 claims description 11
- 229910001338 liquidmetal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000006641 stabilisation Effects 0.000 claims description 5
- 238000011105 stabilization Methods 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 5
- 239000000446 fuel Substances 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 238000005461 lubrication Methods 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 239000013078 crystal Substances 0.000 abstract description 12
- 239000007788 liquid Substances 0.000 abstract description 7
- 239000007787 solid Substances 0.000 abstract description 7
- 238000007711 solidification Methods 0.000 abstract description 6
- 230000008023 solidification Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 230000008520 organization Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000008014 freezing Effects 0.000 description 4
- 238000007710 freezing Methods 0.000 description 4
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
Landscapes
- Continuous Casting (AREA)
Abstract
The present invention relates to a heating casting mold and gas film continuous casting method. A graphite ring is added on an outlet of a heating casting mold, and besides, lubricating oil and gases (nitrogen and argon) are filled between a casting rod and the casting mold by a gas inlet and an oil inlet on the graphite ring. Thus, a gas film is formed between the casting mold and the casting rod under the casting condition so as to ensure that the casting mold is not in contact with the casting rod, and a solid and liquid interface can be controlled in the range of the graphite ring in the casting mold in the process of solidification. As a result, the present invention avoids generating stray crystal and leaking accidents, improves the inner quality and the surface smoothness of casting rods with directional solidification tissues and monocrystal tissues, increases continuous casting speed and improves production efficiency.
Description
Technical field
The present invention relates to a kind of continuous casing, relate in particular to a kind of heating casting mold and gas film continuous casting method, belong to metallurgical, technical field of material.
Background technology
In the prior art, there is the heated mold of employing to replace cold mould in traditional continuous casting, to eliminate the possibility of casting mold inwall forming core.Simultaneously, because the cooling effect of the outer cooler of casting mold makes hot-fluid be transmitted to the cooling zone by the casting mold outlet along the cast direction, thereby has formed the directional solidification condition.As United States Patent (USP) 4515204 " Continuous Metal Casting ", document " technological parameter and the performance of continuously casting copper monocrystalline bar " (Xu Zhenming etc., " artificial lens journal " 1998,27 the 3rd phases of volume) all the heated mold continuous casing there is more detailed introduction.Make the ingot casting that metal single crystal can be cast out continuously in this way or have oriented freezing organization, but heated mold is when continuous casting, the solid liquid interface of casting rod is positioned at the casting mold exit, leakage accident can often take place when casting speed is excessive, particularly horizontal casting with vertical under when drawing method, continuous casting is interrupted.Therefore, this method must be carried out under very low casting speed, and efficient is very low.The metal big (as copper) to density, when horizontal casting, the surface tension of molten metal can not be kept the deadweight of itself, solid liquid interface must be controlled at casting mold inside, because molten metal contacts with the type wall, easily form stray crystal like this, reduce the internal soundness of casting rod on casting rod surface.When solid liquid interface when casting mold is inner, because casting mold and the friction of casting between the rod easily produce casting flaws such as drawing crack.
Summary of the invention
The objective of the invention is to above-mentioned deficiency, a kind of novel heating casting mold and gas film continuous casting method is provided, can steadily increase casting speed, improve excellent internal soundness of casting and surface smoothness, enhance productivity at prior art.
For realizing such purpose, in the technical scheme of the present invention, graphite annulus is installed in the heated mold exit, graphite annulus and heated mold sealing, by air admission hole on the graphite annulus and fuel feed hole, difference injecting gas (nitrogen, argon gas) and lubricating oil between casting rod and casting mold, make in the casting process and form air film on casting rod surface, avoid casting contacting of rod and casting mold, reduce to cast the frictional force of rod and casting mold, improve and cast excellent surface smoothness and internal soundness.Adopt calandria that casting mold is heated during continuous casting, make temperature surpass the fusing point of metal, the seeding rod is placed on the graphite annulus place, introduce liquid metal to casting mold, it is oily gentle to feed in graphite annulus, the beginning continuous casting.Specific embodiment of the present invention is as follows:
1, the selected alloy of fusing in melting furnace is overheated 100 ℃～200 ℃.
2, the temperature of heated mold is fusing point+50～100 ℃ of continuous casting of metals.
3, lubrication pressure is 4～8Mpa, and the pressure of gas (nitrogen, argon gas) is 4～8kg.
The present invention lays graphite annulus at the heated mold port of export, and injects lubricating oil and gas by graphite annulus between casting rod and casting mold, makes in the casting process and forms air film on casting rod surface, avoids casting contacting of rod and casting mold, is difficult for the formation stray crystal on casting rod surface.Simultaneously, solid liquid interface in the process of setting can be controlled in the graphite annulus scope in the casting mold, avoid leakage accident; Because of in casting process, forming air film between casting rod and casting mold, overcome the casting flaws such as drawing crack in the casting process again, improved surface smoothness and casting speed.Therefore, adopt the method can prepare the directional solidification or the monocrystalline casting rod of surface smoothness height, no stray crystal, satisfy the requirement of actual condition.
Description of drawings
Fig. 1 is a heating casting mold and gas film continuous casting method device schematic diagram of the present invention.
Among the figure, 1 is calandria, and 2 is casting mold, and 3 is liquid metal, and 4 is graphite annulus, and 5 is solid liquid interface, and 6 is fuel feed hole, and 7 is air admission hole, and 8 are the casting rod, and 9 is cooler, and 10 is the seeding rod.
Among the figure, graphite annulus 4 is installed in the exit of heated mold 2, graphite annulus 4 and heated mold 2 sealings, graphite annulus 4 both sides correspondences have air admission hole 7 and fuel feed hole 6.
When continuous casting, at first adopt calandria 1 casting mold 2 heating.When the fusing point of temperature above metal, seeding rod 10 is placed on graphite annulus 4 places, introduce liquid metal to casting mold, it is oily gentle to feed in graphite annulus, and continuous casting begins.In the seeding starting stage, it is slow that casting speed is wanted, and progressively quickens, and carries out the transition to desired speed stably, enters the stabilization sub stage.
The specific embodiment
Below further describe technical scheme of the present invention by specific embodiment.
Embodiment 1: the continuous casting of heated mold copper single crystal air film
In the resistance furnace melting, temperature is 1250 ℃, and the temperature of heated mold is 1180 ℃, and lubricating oil (Ggarctic Shc230) pressure is 5 Mpa, and the feeding nitrogen gas pressure is 5kg.Graphite annulus is installed in exit at heated mold, and graphite annulus and heated mold sealing at first adopt calandria that casting mold is heated when continuous casting, and temperature is 1180 ℃, and the seeding rod is placed on the graphite annulus place.Improve the pressure head of liquid metal, liquid metal is introduced casting mold, it is oily gentle to feed in graphite annulus, and continuous casting begins.In the seeding starting stage, it is slow that casting speed is wanted, and progressively quickens, and carries out the transition to desired speed stably, enters the stabilization sub stage.Casting speed is 40mm/min, can cast out inner no stray crystal continuously, the copper single crystal casting rod (φ 8mm) of any surface finish.
Embodiment 2: the continuous casting of heated mold directional solidification copper air film
In the resistance furnace melting, temperature is 1250 ℃, and the temperature of heated mold is 1180 ℃, and lubricating oil (Ggarctic Shc230) pressure is 5Mpa, and the feeding nitrogen gas pressure is 5kg.Graphite annulus is installed in exit at heated mold, and graphite annulus and heated mold sealing at first adopt calandria that casting mold is heated when continuous casting, and temperature is 1180 ℃, and the seeding rod is placed on the graphite annulus place.Improve the pressure head of liquid metal, liquid metal is introduced casting mold, it is oily gentle to feed in graphite annulus, and continuous casting begins.In the seeding starting stage, it is slow that casting speed is wanted, and progressively quickens, and carries out the transition to desired speed stably, enters the stabilization sub stage.Casting speed is 100mm/min, can cast out inner no stray crystal continuously, the casting in bronze rod of the oriented freezing organization of any surface finish (φ 8mm).
Embodiment 3: the continuous casting of heating casting mold and gas film directional solidification aluminium
In the resistance furnace melting, temperature is 750 ℃, and the temperature of heated mold is 720 ℃, and lubricating oil (GgarcticShc230) pressure is 5Mpa, and the feeding nitrogen gas pressure is 5kg.Graphite annulus is installed in exit at heated mold, and graphite annulus and heated mold sealing at first adopt calandria that casting mold is heated when continuous casting, and temperature is 720 ℃, and the seeding rod is placed on the graphite annulus place.Improve the pressure head of liquid metal, liquid metal is introduced casting mold, it is oily gentle to feed in graphite annulus, and continuous casting begins.In the seeding starting stage, it is slow that casting speed is wanted, and progressively quickens, and carries out the transition to desired speed stably, enters the stabilization sub stage.Casting speed is 100mm/min, can cast out inner no stray crystal continuously, the aluminium casting rod (φ 8mm) of the oriented freezing organization of any surface finish.
The present invention and present heated mold continuous casing ratio, avoided contacting of casting rod and casting mold, be difficult for forming stray crystal on casting rod surface, simultaneously, solid liquid interface can be controlled in the inherent graphite annulus scope of casting mold, avoid leaking, again owing in casting process, forming air film between casting rod and casting mold, overcome the casting flaws such as drawing crack in the casting process, improved and had oriented freezing organization and single crystal organization is cast excellent internal soundness and surface smoothness, increase casting speed, improved production efficiency.
Claims (1)
1, a kind of heating casting mold and gas film continuous casting method, it is characterized in that the at first selected alloy of fusing in melting furnace, overheated 100 ℃～200 ℃, with calandria (1) casting mold (2) is heated, the temperature of heated mold is fusing point+50～100 ℃ of continuous casting of metals, the fusing point that surpasses metal when temperature, seeding rod (10) is placed on the graphite annulus of installing in casting mold (2) exit (4) to be located, introduce liquid metal to casting mold (2), air admission hole (7) and fuel feed hole (6) difference injecting gas and lubricating oil by graphite annulus (4), between casting mold (2) and casting rod (8), form air film, lubrication pressure is 4～8Mpa, and the gas of injection is nitrogen or argon gas, and the pressure of gas is 4～8kg, casting speed progressively quickens, and smooth transition is to the stabilization sub stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011130261A CN1167527C (en) | 2001-05-31 | 2001-05-31 | Heating casting mold and gas film continuous casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011130261A CN1167527C (en) | 2001-05-31 | 2001-05-31 | Heating casting mold and gas film continuous casting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1326829A CN1326829A (en) | 2001-12-19 |
| CN1167527C true CN1167527C (en) | 2004-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011130261A Expired - Fee Related CN1167527C (en) | 2001-05-31 | 2001-05-31 | Heating casting mold and gas film continuous casting method |
Country Status (1)
| Country | Link |
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| CN (1) | CN1167527C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100895618B1 (en) * | 2004-10-25 | 2009-05-06 | 쇼와 덴코 가부시키가이샤 | Continuous casting apparatus, continuous casting method, and aluminum aloy cast rod |
| CN100372632C (en) * | 2006-05-19 | 2008-03-05 | 苏州有色金属加工研究院 | Continuous lubricating system for semi-continuous casting of aluminium and aluminium alloy |
| CN101332493B (en) * | 2008-07-31 | 2010-06-02 | 东北大学 | Gas film quick continuous casting device and method in magnetostatic field |
| CN101850405B (en) * | 2010-06-18 | 2011-09-28 | 江苏技术师范学院 | Experimental device for simulating gas film continuous casting crystallizer |
| CN105091762B (en) * | 2015-05-26 | 2016-05-25 | 雷艳梅 | A kind of finishing tool transmission-type reagent liquid medicine painting uniformity detecting method and device |
| CN106180600A (en) * | 2016-08-30 | 2016-12-07 | 中国重型机械研究院股份公司 | Magnesium alloy slab casting gas shield ring |
-
2001
- 2001-05-31 CN CNB011130261A patent/CN1167527C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1326829A (en) | 2001-12-19 |
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