Transactions of Materials and Heat Treatment

Title：Research and trial production on forging technology for ultra-wide shield cutter head square plate

Authors： Hu Zhenzhi1 2 Wang Yuchang1 2 Xu Hangtao1 2 Rong Liang1 2 Chen Chaoyang1 2 Liu Wang1 2 Guo Weidong1 2

Unit： 1.LuoYang CITIC HIC Casting & Forging Co. Ltd. 2.CITIC Heavy Industries Co. Ltd.

KeyWords： ultra-wide shield cutter head square plate rotary anvil drawing and spreading forging compaction compressive stress

ClassificationCode：TG316

year,vol(issue):pagenumber：2023,48(12):1-8

Abstract：

The 5750 mm×5750 mm×380 mm ultra-wide shield cutter head square plate forgings have large width, low height, heavy tonnage and strict technical indicators, and it is extremely difficult to control the purity of steel ingot，select the forging scheme and formulate the heat treatment process. Therefore, in the aspect of melten steel smelting，the process scheme of “ preferred steel plate + vacuum degassing + vacuum pouring ” was proposed. In the aspect of lengthening and drawing，the forging forming scheme of “dimension control for blank making + drawing and speading with rotary anvil + four-sided trimming” was put forward for the first time. In the heat treatment process，combined with material characteristics and part structure，the process measures of “uniform spray for forced cooling in normalizing stage + support pad height control + time-controlled flipping” was put forward. Furthermore, by establishing a finite element analysis model, the multi-scheme simulation comparison analysis for forging was conducted, and the compressive stress at the core and the forging compaction effect of various forming schemes were predicted and verified, which provides the theoretical basis for the formulation of process scheme and parameters. Through the trial production, the rationality of the process scheme is verified.

Funds：

洛阳市重大科技创新专项（2301020A）

作者简介：胡振志（1981-），男，硕士，高级工程师 E-mail：zhenzhi401@163.com

Reference：

[1]吕炎.锻造工艺学[M]. 北京:机械工业出版社，1995.

Lyu Y. Forging Technology[M].Beijing: China Machine Press,1995.

[2]乔宁宁,王佳琪. 锻造对热锻模具钢高温性能的影响[J]. 锻压技术,2022,47(5):19-24.

Qiao N N，Wang J Q. Influence of forging on high temperature properties for hot forging die steel[J]. Forging & Stamping Technology,2022,47(5):19-24.

[3]GB/T 10561—2023，钢中非金属夹杂物含量的测定标准评级图显微检验法[S].

GB/T 10561—2023，Determination of content of nonmetallic inclusions in steel—Micrographic method using standard diagrams [S].

[4]GB/T 6394—2007，金属平均晶粒度测试方法[S].

GB/T 6394—2007，Determination of estimating the average grain size of metal[S].

[5]JB/T 5000.15—2017，重型机械通用技术条件第15部分：锻钢件无损检测[S].

JB/T5000.15—2017，Heavy mechanical general techniques and standards—Part 15:Non-destructive inspection of forged steel [S].

[6]俞汉青，陈金德.金属塑性成形原理[M].北京：机械工业出版社，1999.

Yu H Q, Chen J D. Principles of Metal Forming[M]. Beijing: China Machine Press, 1999.

[7]左旭, 卫原平, 陈军,等.复杂体积成形三维有限元仿真的关键技术[J]. 金属学报，1999，5(3): 325-329.

Zuo X, Wei Y P, Chen J, et al. The key techniques of 3D FEM simulation in bulk forming[J]. Acta Metallurgica Sinica, 1999，5(3): 325-329.

[8]马宏, 尹国辉,薛永栋.大型钢锭真空浇注水口吹氩技术研究与应用[J].大型铸锻件,2019,(3):1-4.

Ma H，Yi G H，Xue Y D. Research and application of the technology of argon blowing at vacuum pouring head of large steel ingot[J]. Heavy Casting and Forging, 2019, (3):1-4.

[9]赵建国，胡振志，汪雨昌，等. 宽厚板P20塑料模具钢成形仿真分析与试验研究[J].锻压技术, 2022,47(5):73-80.

Zhao J G, Hu Z Z, Wang Y C, et al. Simulation analysis and experimental study on forming of wide and thick plate P20 plastic mold steels [J]. Forging and Stamping Technology, 2022,47(5):73-80.

[10]王佩鑫.Q345E厚规格钢板的生产工艺研究[J]. 天津冶金,2019,(4):36-38.

Wang P X. Research on production technology of Q345E thick gauge steel plate[J]. Tianjin Metallurgy，2019,(4):36-38.

[11]李海阳, 纪登鹏, 周晓航,等.Q345D钢的热变形抗力研究 [J].上海金属, 2018,40(2): 19-23.

Li H Y，Ji D P，Zhou X Ｈ，et al. Study on hot deformation resistance of Q345D steel[J]. Shanghai Metals，2018,40(2): 19-23.

[12]王世森，李银华，陆在学.宽厚板Q345钢轧制工艺探讨[J]. 钢铁研究, 2010,38(6):41-43.

Wang S S，Li Y H，Lu Z X. Discussion on wide and heavy plate rolling technologies of Q345 steel[J]. Research on Iron and Steel，2010,38(6):41-43.

[13]冯文义.正火控冷工艺对厚规格Q345E性能的影响[J].工业炉,2018,40(3):18-20

Feng W Y. Influence of normalizing control cooling (NCC) process on performance of Q345E thicker steel plates[J]. Industrial Furnace,2018,40(3):18-20.

[14]李雷, 陈长芳, 孔明姣.Q345B钢中厚板延伸率不合格的原因分析与改进[J]. 河北冶金, 2013,(4):19-21.

Li L，Chen C F，Kong M J.Analysis and improvement for unqualified elongation of plate of Q345B steel[J]. Hebei Metallurgy，2013,(4):19-21.

Service：

【This site has not yet opened Download Service】【Add Favorite】