山东冶金
山東冶金
산동야금
SHANDONG METALLURY
2015年
2期
9-10,13
,共3页
热轧窄带钢%40Mn%硬度%脱碳层
熱軋窄帶鋼%40Mn%硬度%脫碳層
열알착대강%40Mn%경도%탈탄층
hot rolled narrow strip steel%40Mn steel%hardness%decarburization layer
针对钢坯易开裂、加热过程易脱碳等问题，对铁水进行脱硫预处理，适当降低单炉装入量，采用全程保护浇注，高温快烧等工艺，保证钢坯质量和轧后性能，开发的40Mn热轧窄带钢产品质量达到标准要求，实现了批量生产，成材率98.26%，合格率99.91%。钢带交货状态硬度（HSB 10/3000）187～195，平均脱碳层深度0.042 mm，带钢外形尺寸精度高，表面质量好，产品满足标准及用户使用要求。
針對鋼坯易開裂、加熱過程易脫碳等問題，對鐵水進行脫硫預處理，適噹降低單爐裝入量，採用全程保護澆註，高溫快燒等工藝，保證鋼坯質量和軋後性能，開髮的40Mn熱軋窄帶鋼產品質量達到標準要求，實現瞭批量生產，成材率98.26%，閤格率99.91%。鋼帶交貨狀態硬度（HSB 10/3000）187～195，平均脫碳層深度0.042 mm，帶鋼外形呎吋精度高，錶麵質量好，產品滿足標準及用戶使用要求。
침대강배역개렬、가열과정역탈탄등문제，대철수진행탈류예처리，괄당강저단로장입량，채용전정보호요주，고온쾌소등공예，보증강배질량화알후성능，개발적40Mn열알착대강산품질량체도표준요구，실현료비량생산，성재솔98.26%，합격솔99.91%。강대교화상태경도（HSB 10/3000）187～195，평균탈탄층심도0.042 mm，대강외형척촌정도고，표면질량호，산품만족표준급용호사용요구。
In view of easy cracking of the billet, easy decarburization in heating process of the billet and other problems, the molten iron was pretreated for desulphurization. By appropriately reducing single furnace loading, adopting full protection casting, high temperature fast heating process, the quality of the billet and the properties after rolling were ensured. The product quality of 40Mn hot rolled narrow strip steel developed can conform to the Standard requirements. The finished product rate is 98.26%and the qualified rate is 99.91%. The strip delivery state hardness (HSB 10/3 000) is 187-195. The average depth of decarburized layer is 0.042 mm. The strip with high precision of shape size and good surface quality meet the Standard and the user’s requirements.
