| 2311塑料模具钢板的研制 |
| |
| 引用本文： | 张欢,朱军,张渊普,王孝东,习天辉.2311塑料模具钢板的研制[J].特殊钢,2022,43(4):59-62. |
| |
| 作者姓名： | 张欢 朱军 张渊普 王孝东 习天辉 |
| |
| 作者单位： | 1宝武集团鄂城钢铁有限公司，鄂州436002；
2宝武集团中央研究院，武汉430080 |
| |
| 摘 要： | 2311模具钢16～80 mm板经KR脱硫-130 t BOF-LF-RH-300 mm连铸板坯-轧制-580～610℃回火流程生产。结果表明:对2311钢(/%:C 0.38～0.42,Si 0.25～0.35,Mn 1.30～1.50,P≤0.020,S≤0.005,Cr 1.80～2.00,Mo 0.17～0.25,Als 0.015～0.045),通过转炉、LF和RH工序合金配加分工可提高中间包钢水成分命中率;采用连铸弱冷低拉速(0.70～0.75 m/min)浇注、热坯坑冷和坯料缓慢加热工艺(10～12 min/cm)可有效避免钢坯开裂的风险;在合理的热机械控制轧制(TMCP)+580～610℃回火工艺下,可实现16～80 mm钢板硬度值28～33HRC,截面硬度值控制偏差≤3HRC,金相组织为回火贝氏体,组织内应力消除,钢板的性能和组织可满足2311预硬模具钢的要求。
|
| 收稿时间： | 2022-01-08 |
Development and Production of 2311 Plastic Die Steel Plate |
| |
| ZHANG Huan,ZHU Jun,ZHANG Yuanpu,WANG Xiaodong,XI Tianhui.Development and Production of 2311 Plastic Die Steel Plate[J].Special Steel,2022,43(4):59-62. |
| |
| Authors: | ZHANG Huan ZHU Jun ZHANG Yuanpu WANG Xiaodong XI Tianhui |
| |
| Affiliation: | 1 Baowu Group Echeng Iron & Steel Co Ltd, Ezhou 436002；
2 R&D Center of Baosteel Iron and Steel Co Ltd, Wuhan 430080 |
| |
| Abstract: | The 2311 die steel 16 ~ 80 mm plate is produced by KR desulfphrization-130 t BOF-LF-RH-300 mm cast slab-rolling-580 -610 °C tempering process. The results show that for 2311 steel (/% : C 0. 38 ~0.42, Si 0.25 ~0. 35 , Mn 1.30 ~ 1.50, P≤0.020, S≤0.005, Cr 1.80 ~2.00, Mo 0.17 ~0.25, Als 0.015 ~0.045) , through alloys rational division in converter-LF-RH process, the composition hit rate of the molten steel in tundish can be improved; using weak cooling and low speed casting (0.70 ~0.75 m/min) , pit cooling and slow heating (10-12 min/cm) , the slab cracking can be avoided； with thermo-mechanical rolling control process (TMCP) +580 -610 °C tempering process, the thickness 16 - 80 mm steel plate with hardness value 28 ~33HRC, cross-sectional hardness deviation value W3HRC, metallographic organization of tempered bainite, and eliminating internal stress of microstructure can be achieved. Finally, the performance and microstructures of the steel plate can meet the requirements of 2311 pre-hardened die steel. |
| |
| Keywords: | |
|
| 点击此处可从《特殊钢》浏览原始摘要信息 |
|
点击此处可从《特殊钢》下载全文 |
|
