KR20140056713A - 몰드 직하 응고두께 제어방법 - Google Patents
몰드 직하 응고두께 제어방법 Download PDFInfo
- Publication number
- KR20140056713A KR20140056713A KR1020120121979A KR20120121979A KR20140056713A KR 20140056713 A KR20140056713 A KR 20140056713A KR 1020120121979 A KR1020120121979 A KR 1020120121979A KR 20120121979 A KR20120121979 A KR 20120121979A KR 20140056713 A KR20140056713 A KR 20140056713A
- Authority
- KR
- South Korea
- Prior art keywords
- mold
- casting
- molten steel
- casting speed
- cooling water
- 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.)
- Ceased
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000015271 coagulation Effects 0.000 title abstract description 9
- 238000005345 coagulation Methods 0.000 title abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 84
- 239000010959 steel Substances 0.000 claims abstract description 84
- 238000005266 casting Methods 0.000 claims abstract description 68
- 238000009749 continuous casting Methods 0.000 claims abstract description 21
- 239000000498 cooling water Substances 0.000 claims abstract description 16
- 230000008569 process Effects 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims description 13
- 230000009467 reduction Effects 0.000 claims description 11
- 230000003247 decreasing effect Effects 0.000 abstract description 4
- 230000001112 coagulating effect Effects 0.000 abstract 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 15
- 239000000843 powder Substances 0.000 description 12
- 238000007711 solidification Methods 0.000 description 12
- 230000008023 solidification Effects 0.000 description 12
- 239000002184 metal Substances 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 10
- 238000007654 immersion Methods 0.000 description 8
- 238000005507 spraying Methods 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/07—Lubricating the moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/108—Feeding additives, powders, or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
- B22D11/1246—Nozzles; Spray heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/14—Closures
- B22D41/16—Closures stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
Description
도 2는 도 1의 몰드 및 그와 인접한 부분에서의 용강의 분포 형태를 보인 개념도이다.
도 3은 본 발명의 실시예에 의한 연속주조 시 몰드 출구에서 형성되는 응고쉘의 두께 예측방법을 개략적으로 나타낸 순서도이다.
도 4는 몰드에서 주조속도와 몰드 전열량을 임의의 값으로 하여 수치해석한 결과를 나타낸 그래프이다.
30: 몰드 50: 파우더 공급기
51: 파우더층 60: 지지롤
65: 스프레이 70: 핀치롤
80: 연주주편 81: 응고쉘
82: 미응고 용강 83: 선단부
85: 응고 완료점 91: 절단 지점
Claims (3)
- 연속주조공정에서 주조에 따른 변수를 관계식에 대입하여 주편 전열량을 계측 평가하는 단계;
상기 계산된 주편 전열량을 통해 몰드를 냉각시키는 유출입 냉각수의 온도차에 따른 용강 과열도를 계산하고, 상기 계산된 용강 과열도에 따른 주조속도 감속량을 계산하는 단계; 및
상기 계산된 주조속도 감속량으로 몰드의 주조속도를 조절하는 단계;를 포함하는 몰드 직하 응고두께 제어방법.
관계식
여기서, v는 주조속도이고, Q는 몰드를 냉각시키는 냉각수량이며, ΔT는 몰드를 냉각시키는 유출입 냉각수의 온도차(유출 - 유입)이고, A는 주편/몰드의 접촉면적이며, L은 주편/몰드의 접촉길이를 나타냄.
- 청구항 1에 있어서,
상기 주조속도 감속량을 계산하는 단계는 상기 몰드를 냉각시키는 유출입 냉각수의 온도차와 주편 전열량을 대비하여 상기 용강 과열도를 계산하는 몰드 직하 응고두께 제어방법.
- 청구항 2에 있어서,
상기 용강 과열도가 10℃ 상승되면 주조속도를 0.03m/min 감속시키는 몰드 직하 응고두께 제어방법.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120121979A KR20140056713A (ko) | 2012-10-31 | 2012-10-31 | 몰드 직하 응고두께 제어방법 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120121979A KR20140056713A (ko) | 2012-10-31 | 2012-10-31 | 몰드 직하 응고두께 제어방법 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20140056713A true KR20140056713A (ko) | 2014-05-12 |
Family
ID=50887800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020120121979A Ceased KR20140056713A (ko) | 2012-10-31 | 2012-10-31 | 몰드 직하 응고두께 제어방법 |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20140056713A (ko) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115945656A (zh) * | 2023-01-16 | 2023-04-11 | 山东钢铁股份有限公司 | 一种稳定控制连铸结晶器坯壳厚度的方法 |
-
2012
- 2012-10-31 KR KR1020120121979A patent/KR20140056713A/ko not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115945656A (zh) * | 2023-01-16 | 2023-04-11 | 山东钢铁股份有限公司 | 一种稳定控制连铸结晶器坯壳厚度的方法 |
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Patent event date: 20150403 Comment text: Decision to Refuse Application Patent event code: PE06012S01D Patent event date: 20141110 Comment text: Notification of reason for refusal Patent event code: PE06011S01I Patent event date: 20140529 Comment text: Notification of reason for refusal Patent event code: PE06011S01I |


