KR20170010794A - 열연 무산세 직접 냉연 환원 어닐링 용융도금 제품의 생산방법 - Google Patents
열연 무산세 직접 냉연 환원 어닐링 용융도금 제품의 생산방법 Download PDFInfo
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Abstract
Description
도2는 본 발명의 응용 실시예1에 따라 수득한 열연판이 50% 냉연을 거친 후 스케일 단면 금속 현미경 사진이다.
도3은 본 발명의 응용 실시예1에 따라 수득한 열연판이 50% 냉연을 거친 후 스케일 표면 모양 사진이다.
도4는 본 발명의 응용 실시예1에 따라 수득한 아연도금판의 단면 스캔 사진이다.
도5는 본 발명의 응용 실시예1에 따라 수득한 아연도금판이 180도로 만곡된 후의 도금층 표면 사진이다.
도6은 본 발명의 응용 실시예1에 따라 수득한 아연알루미늄마그네슘 도금판의 단면 스캔이다.
| 에너지스펙트럼 번호 | 데이터 통계 | C | Fe | Zn | Total | |
| 에너지스펙트럼1 | 예 | 6.22 | 90.52 | 3.26 | 100.00 | |
| 에너지스펙트럼2 | 예 | 5.05 | 93.04 | 1.91 | 100.00 | |
| 평균값 | 5.64 | 91.78 | 2.58 | 100.00 | ||
| 표준 편차값 | 0.83 | 1.78 | 0.95 | |||
| 최대치 | 6.22 | 93.04 | 3.26 | |||
| 최소치 | 5.05 | 90.52 | 1.91 |
Claims (16)
- 슬래브에 대하여 인을 제거한 후, 순차적으로 조압연기의 조압연, 사상압연기의 사상압연, 냉각장치의 냉각, 권취기의 코일링을 거치고, 출탕온도를 낮추고 압연속도를 높임으로써 스케일 두께를 감소시키는 동시에 압연 후의 냉각속도와 코일링온도를 제어하여 열연판 표면 스케일 구조를 제어하며, 스케일 부착력을 향상시키고 스케일 두께를 감소시키는, 열연 유닛을 통해 열연하는 단계;
압연압력, 장력, 변형률 및 압연패스횟수를 포함하는 냉연 공정 매개변수를 최적화하고 압연 윤활액을 사용하여 스케일이 냉연과정에서 베이스에 따라 양호한 소성 변형이 발생되도록 함으로써 높은 표면품질 및 판 형상의 스케일판을 수득하는, 냉연 유닛을 통해 냉연하는 단계;
환원성 가스를 통입시키고 환원온도 및 시간을 제어하며, 스케일을 철저하게 환원시키고 띠강이 아연욕으로 진입하는 온도까지 냉각시키는, 환원로를 통해 환원 어닐링하는 단계; 및
환원 어닐링 후 직접 아연욕으로 진입하고 몇 초간 체류시켜 용융도금을 완성하는, 용융도금 단계
를 포함하는 것을 특징으로 하는 열연 무산세 직접 냉연 환원 어닐링 용융도금 제품의 생산방법. - 제1항에 있어서,
탈지세정장치에서 알칼리성 탈지제를 사용하여 냉연 과정에서 표면에 잔류된 기름때 및 분진을 제거하고, 세정 및 건조시키는, 냉연 단계 후의 탈지단계를 더 포함하는 것을 특징으로 하는 열연 무산세 직접 냉연 환원 어닐링 용융도금 제품의 생산방법. - 제1항에 있어서,
열연단계에서, 출탕온도는 1100~1250℃이고, 압연 마감온도는 800~900℃이며, 코일링온도는 550~600℃ 사이이고, 압연속도는 8~20m/s이며, 압연 후 냉각속도는 7~30℃/s인 것을 특징으로 하는 열연 무산세 직접 냉연 환원 어닐링 용융도금 제품의 생산방법. - 제3항에 있어서,
상기 출탕온도는 1150~1200℃이고, 압연 마감온도는 840~870℃이며, 코일링온도는 550~570℃이고, 압연속도는 14~18m/s이며, 냉각속도는 15~20℃/s인 것을 특징으로 하는 열연 무산세 직접 냉연 환원 어닐링 용융도금 제품의 생산방법. - 제3항 또는 제4항에 있어서,
상기 출탕온도는 1170~1200℃이고, 압연 마감온도는 850℃ 또는 860℃이며, 코일링온도는 550℃ 또는 560℃이고, 압연속도는 17m/s 또는 18m/s이며, 냉각속도는 19℃/s 또는 20℃/s인 것을 특징으로 하는 열연 무산세 직접 냉연 환원 어닐링 용융도금 제품의 생산방법. - 제1항에 있어서,
열연단계에서, 수득한 열연판 두께는 1.0~6mm이고, 열연판 표면 스케일의 평균 두께는 5~10㎛이며, 스케일구조는 Fe3O4 및 FeO를 위주로 하고, 여기서 Fe3O4의 중량함량은 50% 이상을 차지하는 것을 특징으로 하는 열연 무산세 직접 냉연 환원 어닐링 용융도금 제품의 생산방법. - 제6항에 있어서,
상기 열연판 두께는 1.5~4mm이고, 상기 Fe3O4의 함량은 65% 이상을 차지하는 것을 특징으로 하는 열연 무산세 직접 냉연 환원 어닐링 용융도금 제품의 생산방법. - 제1항에 있어서,
냉연단계에서, 압연패스는 1~2회 내에 완성되고, 매차례 변형률은 1.0%~90%로 제어하는 것을 특징으로 하는 열연 무산세 직접 냉연 환원 어닐링 용융도금 제품의 생산방법. - 제8항에 있어서,
상기 압연패스는 1회 내에 완성되고, 변형률은 50%~80%로 제어하는 것을 특징으로 하는 열연 무산세 직접 냉연 환원 어닐링 용융도금 제품의 생산방법. - 제1항 또는 제8항에 있어서,
냉연단계에서, 압연 유화액은 탈이온수 또는 팜유를 사용하고, 냉연 압하율은 1.0%~90%인 것을 특징으로 하는 열연 무산세 직접 냉연 환원 어닐링 용융도금 제품의 생산방법. - 제10항에 있어서,
상기 냉연 압하율은 50%~80%인 것을 특징으로 하는 열연 무산세 직접 냉연 환원 어닐링 용융도금 제품의 생산방법. - 제1항에 있어서,
환원 어닐링 단계에서, 환원온도는 500~1000℃이고, 환원시간은 60~300s이며, 환원성 가스는 H2 또는 CO와 불활성가스의 혼합물이고, 여기서 H2 또는 CO의 농도는 3% 이상인 것을 특징으로 하는 열연 무산세 직접 냉연 환원 어닐링 용융도금 제품의 생산방법. - 제12항에 있어서,
상기의 환원온도는 750~950℃이고, 체류시간은 120~300s이며, H2 또는 CO의 농도는 10%~75%인 것을 특징으로 하는 열연 무산세 직접 냉연 환원 어닐링 용융도금 제품의 생산방법. - 제12항 또는 제13항에 있어서,
상기의 환원온도는 800℃, 850℃ 또는 900℃이고, 체류시간은 180s, 240s 또는 300s이며, H2 또는 CO의 농도는 15%, 25% 또는 30%인 것을 특징으로 하는 열연 무산세 직접 냉연 환원 어닐링 용융도금 제품의 생산방법. - 제12항에 있어서,
환원 어닐링 단계에서, 반응에 참여하지 않은 H2 또는 CO는 순환 사용되는 것을 특징으로 하는 열연 무산세 직접 냉연 환원 어닐링 용융도금 제품의 생산방법. - 제1항에 있어서,
용융도금 단계에서, 수득한 용융도금제품은 용융순수아연도금, 용융아연알루미늄마그네슘도금, 용융알루미늄아연도금 또는 용융알루미늄규소도금 제품을 포함하는 것을 특징으로 하는 열연 무산세 직접 냉연 환원 어닐링 용융도금 제품의 생산방법.
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| PCT/CN2015/070983 WO2015180500A1 (zh) | 2014-05-30 | 2015-01-19 | 热轧免酸洗直接冷轧还原退火热镀产品的生产方法 |
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| DE112015002553T5 (de) | 2017-03-23 |
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