|
|
|
| Analysis of rolled cracks on 38MnVS nonquenched and tempered steel |
| ZHAO Menghao1，LIU Nianfu2，AI Kenan1，ZHANG Dong1，FU Jianxun1 |
(1. School of Materials Science and Engineering， State Key Laboratory of Advanced Special Steel，
Center for Advanced Solidification Technology， Shanghai University， Shanghai 200072， China；
2. Baosteel Shaoguan Special Steel Co.， Ltd.， Shaoguan 512123， Guangdong， China) |
|
|
|
|
Abstract Aiming at the rolling cracks of 38MnVS nonquenched and tempered steel，the twodimensional and the threedimensional morphology of cracks were analyzed by metallographic microscope，scanning electron microscope，energy spectrum. The results showed that there were obvious decarburization layers on both sides of the crack，and a large number of silicomanganese inclusions distributed along the crack periphery and extension area. Small longitudinal cracks were emerged on the surface during the continuous casting，because of the presence of endogenous inclusions，long and irregular silicic manganate inclusions. In the heat transfer and rolling process， these cracks further expansion，forming perforated cracks and leading to the scrap of the whole rolled. According to the mechanism of crack generation，optimizing the slag during the continuous casting process，and canceling the hot transferring and hot charging during the rolling process can effectively control the crack generation and significantly improve the finished product rate.
|
|
Received: 28 January 2019
Published: 15 November 2019
|
|
|
|
|
|
| [1] |
王振华, 厉勇, 曲明贵, 等.一种曲轴用中碳非调质钢的热变形行为[J].钢铁, 2009, 44(12):79-82
|
| [2] |
Luo Y, Peng J M, Wang H B, et al.Effect of tempering on microstructure and mechanical properties of a non-quenched bainitic steel[J].Materials Science & Engineering A, 2010, 527(15):3433-3437
|
| [2] |
Luo Y, Peng J M, Wang H B, et al.Effect of tempering on microstructure and mechanical properties of a non-quenched bainitic steel[J].Materials Science & Engineering A, 2010, 527(15):3433-3437
|
| [3] |
Yang Z, Wang F, Wang S, et al.Intragranular Ferrite Formation Mechanism and Mechanical Properties of Non-quenched-and-tempered Medium Carbon Steels[J].steel research international, 2008, 79(5):390-395
|
| [3] |
Yang Z, Wang F, Wang S, et al.Intragranular Ferrite Formation Mechanism and Mechanical Properties of Non-quenched-and-tempered Medium Carbon Steels[J].steel research international, 2008, 79(5):390-395
|
| [4] |
Lu J U, Cheng G G, Tan B, et al.Effect of Zr, Al Addition on Characteristics of MnS and Formation of Intragranular Ferrite in Non-Quenched and Tempered Steel[J].ISIJ International, 2018, 58(5):921-928
|
| [5] |
王利军, 阮士朋, 王宁涛, 等.高强度螺栓用非调质钢的研制与应用[J].钢铁, 2018, 53(11):102-106
|
| [6] |
安治国, 黄艳新, 候环宇, 等.汽车前轴用贝氏体型非调质钢连续冷却转变[J].钢铁, 2016, 51(12):70-73
|
| [7] |
陈思联, 惠卫军, 邵成伟, 等.控制冷却对中碳高钒非调质钢组织性能的影响[J].钢铁, 2015, 50(8):77-82
|
| [8] |
刘栋林, 谭利, 刘攀, 等.非调质钢在汽车转向节上的应用[J].热加工工艺, 2014, 43(2):80-81
|
| [4] |
Lu J U, Cheng G G, Tan B, et al.Effect of Zr, Al Addition on Characteristics of MnS and Formation of Intragranular Ferrite in Non-Quenched and Tempered Steel[J].ISIJ International, 2018, 58(5):921-928
|
| [5] |
王利军, 阮士朋, 王宁涛, 等.高强度螺栓用非调质钢的研制与应用[J].钢铁, 2018, 53(11):102-106
|
| [6] |
安治国, 黄艳新, 候环宇, 等.汽车前轴用贝氏体型非调质钢连续冷却转变[J].钢铁, 2016, 51(12):70-73
|
| [7] |
陈思联, 惠卫军, 邵成伟, 等.控制冷却对中碳高钒非调质钢组织性能的影响[J].钢铁, 2015, 50(8):77-82
|
| [8] |
刘栋林, 谭利, 刘攀, 等.非调质钢在汽车转向节上的应用[J].热加工工艺, 2014, 43(2):80-81
|
| [9] |
Hui W J, Zhang Y J, Shao C W, et al.Microstructural effects on high-cycle fatigue properties of microalloyed medium carbon steel 38MnVS[J].Materials Science and Engineering A, 2015, 640:147-153
|
| [10] |
李洪伟, 刘旭, 庞恭贺, 等.典型曲轴零件加工工艺分析及专用铣夹具设计[J].工具技术, 2016, 50(5):80-82
|
| [11] |
柏琳娜, 刘福平, 王邃, 等.Fe-C-Cu粉末锻造汽车发动机连杆的组织与力学性能[J].金属学报, 2016, 52(1):41-50
|
| [12] |
杨琳, 张艳.汽车转向节的制造及工艺优化[J].铸造技术, 2014, 35(1):190-192
|
| [9] |
Hui W J, Zhang Y J, Shao C W, et al.Microstructural effects on high-cycle fatigue properties of microalloyed medium carbon steel 38MnVS[J].Materials Science and Engineering A, 2015, 640:147-153
|
| [10] |
李洪伟, 刘旭, 庞恭贺, 等.典型曲轴零件加工工艺分析及专用铣夹具设计[J].工具技术, 2016, 50(5):80-82
|
| [11] |
柏琳娜, 刘福平, 王邃, 等.Fe-C-Cu粉末锻造汽车发动机连杆的组织与力学性能[J].金属学报, 2016, 52(1):41-50
|
| [12] |
杨琳, 张艳.汽车转向节的制造及工艺优化[J].铸造技术, 2014, 35(1):190-192
|
| [13] |
Park J H, Kang Y.Inclusions in Stainless Steels ? A Review[J].Steel Research International, 2017, 88(12):1-26
|
| [14] |
赵艳宇, 李国忠, 王福明, 等.非调质易切削钢连铸坯的高温延塑性[J].特殊钢, 2009, 30(4):17-18
|
| [15] |
杨玉学, 李年, 陈金雷.钢筋混凝土用热轧带肋钢筋表面纵向裂纹成因分析[J].机械强度, 2003, 25(2):190-195
|
| [13] |
Park J H, Kang Y.Inclusions in Stainless Steels ? A Review[J].Steel Research International, 2017, 88(12):1-26
|
| [14] |
赵艳宇, 李国忠, 王福明, 等.非调质易切削钢连铸坯的高温延塑性[J].特殊钢, 2009, 30(4):17-18
|
| [15] |
杨玉学, 李年, 陈金雷.钢筋混凝土用热轧带肋钢筋表面纵向裂纹成因分析[J].机械强度, 2003, 25(2):190-195
|
| [1] |
DENG Aijun,PU Xuefeng,ZUO Xiaotan,FAN Dingdong,ZHENG Anmin. Study and optimization of Vnotch cracking in Hbeam[J]. Iron and Steel, 2019, 54(8): 161-167. |
| [2] |
ZHAO Jing，ZHEN Xin-gang，ZHU Zhi-yuan，WANG Yu-long，ZHANG Hu-cheng，ZHAO Xin-yu. Formation mechanism and control method of longitudinal corner crack on slab with chamfering mold[J]. Iron and Steel, 2015, 50(7): 43-47. |
| [3] |
CUI Hong-yan,YUAN Shi-jin. Failure Analysis and Improvement of Bar 38B3 Flaw Detection[J]. Chinese Journal of Iron and Steel, 2012, 30(5): 48-50. |
| [4] |
WANG Quan1,GUAN Jian-xia2,HUANG Nan2. Surface Longitudinal Crack Measurement and Analysis for SS400 Steel Sheet[J]. Chinese Journal of Iron and Steel, 2012, 30(3): 42-47. |
| [5] |
FAN Jun1，ZHAO Jun-xue1，CHEN Yuan-ping2，ZHAI Ke-yong1，Li Hui-juan1. Analysis on the Cause of Longitudinal Crack on the Hot-Rolled Ribbed Bar Surface[J]. Iron and Steel, 2012, 47(2): 96-100. |
| [6] |
Cheng Ze-wei. Control of Longitudinal Surface Crack in Central Area of CSP Medium Carbon Steel[J]. Chinese Journal of Iron and Steel, 2011, 1(1): 15-15. |
|
|
|
|
2019, Vol. 54 
