锻压技术

扩孔变形模式对筒形件成形的影响规律

英文标题：Influence laws of reaming deformation modes on forming of cylindrical parts

作者：王金亮温慧华何文武陈慧琴

分类号：

出版年,卷(期):页码：2022,47(3):1-7

摘要：

采用数值模拟方法分析了筒形件自由锻马杠扩孔成形过程和热辗扩成形过程，对比分析了两种变形模式对筒形件变形规律的影响。研究结果表明：相同壁厚锻比的条件下，局部加载间歇变形模式的马杠扩孔成形的筒形件横剖面上等效应变沿周向周期性分布，其大小沿径向从内到外逐渐降低；而局部加载连续变形模式的热辗扩成形的筒形件横剖面上等效应变沿周向均匀分布，其大小在外径处最高，内径处次之，壁厚中心最低。对比发现：两种变形模式中壁厚中心的等效应变值相当，且热辗扩成形的筒形件壁厚中心的等效应变略大。结合热辗扩成形试验结果发现：在相同壁厚锻比的条件下，热辗扩成形工艺可以替代马杠扩孔成形工艺来成形筒形件，在保证环坯充分锻透的前提下，获得变形均匀的筒形件。

The ring forging process and the hot ring rolling process in the free forging of a cylindrical part were simulated by the numerical simulation method, and the influences of the two deformation modes on the forming laws of the cylindrical part were analyzed. The research results show that under the condition of the same wall thickness forging ratio, the equivalent strain in the cross section of the cylindrical part formed by ring forging with the local loading intermittent deformation mode is periodically distributed along the circumferential direction, and its value gradually decreases from inner to outer along the radial direction. However, the equivalent strain in the cross section of the cylindrical part formed by hot ring rolling with the local loading continuous deformation mode is uniformly distributed along the circumferential direction, and its value is the highest at the outer diameter, second at the inner diameter, and the lowest at the center of wall thickness. By comparison, it is found that the equivalent strain values at the center of wall thickness are comparable in the two deformation modes, and the equivalent strain at the center of wall thickness formed by hot ring rolling is slightly larger. Combined with the experimental results of hot ring rolling, the results show that the hot ring rolling process can replace the ring forging process under the condition of the same wall thickness forging ratio to form cylindrical ports, and the cylindrical parts with uniform deformation can be obtained under the premise that the ring blanks are fully forged.

基金项目：

国家自然科学基金资助项目(51575372)

王金亮（1987-），男，博士研究生 E-mail：wang_jinliang55@163.com 通信作者：陈慧琴（1968-），女，博士，教授 E-mail：chenhuiqin@tyust.edu.cn

参考文献：

[1]门正兴, 孙燕飞, 王海英,等. 大型筒体锻造成形缺陷分析及预防[J]. 大型铸锻件, 2011, (5):15-16.

Men Z X, Sun Y F, Wang H Y, et al. Analysis and prevention of defects in heavy cylinder forgings [J]. Heavy Casting and Forging, 2011, (5):7-9.

[2]付赟秋. 300 MW护环芯棒扩孔工艺优化的试验与模拟研究[D]. 太原：太原科技大学, 2010.

Fu Y Q. Experimental and Simulation Study on Mandrel Reaming Process Optimization of 300 MW Ring [D]. Taiyuan: Taiyuan University of Science and Technology, 2010.

[3]姚忠波. 合理选择马杠直径解决筒体锻件尺寸问题[J]. 大型铸锻件，2012，(1)：35-36.

Yao Z B. Solve the shell forging size problems by reasonable selecting core shaft diameter[J]. Heavy Casting and Forging, 2012，(1):35-36.

[4]门正兴，孙嫘，马亚鑫，等. 大型筒体锻件轧制技术研究进展[J].大型铸锻件, 2016, (5):7-9.

Men Z X, Sun L, Ma Y X, et al. Research and development of rolling technique for heavy cylinder forgings [J]. Heavy Casting and Forging, 2016,(5):7-9.

[5]程瑞敏. 大型环件成形过程的数值模拟[D].秦皇岛：燕山大学，2009.

Cheng R M. Numerical Simulation of Forming Process of Heavy Ring-forgings [D]. Qinhuangdao: Yanshan University,2009.

[6]曹立雄. 大型圆筒形锻件的精确建模与工艺优化研究[D]. 长沙：湖南大学，2013.

Cao L X. Research on Precise Modeling and Process Optimization of Large Cylindrical Forgings [D]. Changsha：Hunan University, 2013.

[7]江绍成，李培兴. 径轴双向立式辗环机[J]. 锻压装备与制造技术，2014，49(5):14-17.

Jiang S C, Li P X. Radical and axial vertical ring rolling mill [J]. China Metalforming Equipment & Manufacturing Technology, 2014, 49(5):14-17.

[8]庄仲凯，王强，谈玉龙，等. 径-轴向辗环机轴向轧制机构结构分析[J].精密成形工程，2012，4(5): 30-36,62.

Zhuang Z K, Wang Q, Tan Y L, et al. Structural analysis of axial rolling assembly of radial-axial ring rolling mill [J]. Journal of Netshape Forming Engineering, 2012, 4(5): 30-36,62.

[9]华林，潘利波，兰箭，等.大型环件的径轴向轧制工艺模拟和研究[J]. 中国机械工程，2006,(19)：2020-2023,2071.

Hua L, Pan L B, Lan J, et al. Simulation research on radial-axial large ring rolling technology [J]. China Mechanical Engineering, 2006,(19):2020-2023,2071.

[10]Qian D S, Zhou G, Hua L, et al. 3D coupled thermomechanical FE analysis of blank size effects on radial-axial ring rolling[J]. Ironmaking & Steelmaking, 2013, 40(5):360-368.

[11]Guo L, He Y. Towards a steady forming condition for radial-axial ring rolling [J]. International Journal of Mechanical Sciences, 2011, 53(4):286-299.

[12]王浩. 大型环形件径轴向辗扩成形数值模拟研究[D]. 济南：山东大学, 2013.

Wang H. Study on Numerical Simulation of Radial-axial Rolling Process of Large Ring [D]. Jinan: Shandong University, 2013.

[13]米奕媛. 大型筒形件轧制成形工艺的模拟研究[D]. 太原：太原科技大学，2014.

Mi Y Y. Simulation Research on Rolling Forming Technology of Large Cylindrical Parts[D]. Taiyuan: Taiyuan University of Science and Technology, 2014.

[14]孙建亮, 彭艳, 马博,等. 双辊驱动大型筒节轧机力能参数计算及影响因素分析[J]. 冶金设备, 2011,( 3):12-15,6.

Sun J L, Peng Y, Ma B, et al. Calculation and influences of forces parameters of heavy shell ring rolling mill with two drive rolls[J]. Metallurgical Equipment, 2011,(3):12-15,6.

[15]黄西娜. 大型筒节轧制成形工艺的数值模拟与试验研究[D]. 北京：中国机械科学研究总院，2014.

Huang X N. Numerical Simulation and Experimental Research on Rolling of Heavy Shell [D]. Beijing: China Academy of Machinery Science and Technology, 2014.

[16]王心朋，温彤，刘攀，等. 大型筒形锻件芯轴扩孔过程的变形分析[J]. 热加工工艺，2010，39(11): 60-63.

Wang X P, Wen T, Liu P, et al. Deformation analysis of large cylinder with mandrel reaming process[J]. Hot Working Technology, 2010，39 (11): 60-63.

[17]刘敏, 董晓亮, 马庆贤. 大型筒体锻件空心钢锭锻造工艺探索[J]. 塑性工程学报，2013,20 (6): 1-8.

Liu M, Dong X L, Ma Q X. Investigation on hollow steel ingot forging process of heavy cylinder forging [J]. Journal of Plasticity Engineering, 2013,20 (6):1-8.

[18]Keeton C R. “Ring rolling”, in Metals Handbook: Forming and Forging [M]. Metals Park, OH: ASM International, 1988.

[19]刘东，付明杰，万自永. GH4169合金矩形截面环轧制曲线的试验研究[J]. 航空学报，2007，28(5): 1276-1280.

Liu D, Fu M J, Wan Z Y. Rolling strategies in the rolling process of GH4169 alloy with rectangle cross-section ring [J]. Acta Aeronautica et Astronautica Sinica, 2007, 28(5): 1276-1280.

[20]郭良刚，邸伟佳，杨合，等. 难变形材料环件双向辗轧过程轧制曲线设计方法[J]. 机械工程学报，2014，50(16): 83-88.

Guo L G, Di W J, Yang H, et al. Design method of rolling curve during radial-axial ring rolling process for difficult-to-deform[J]. Journal of Mechanical Engineering, 2014, 50(16): 83-88.

[21]GB/T 228.1—2010, 金属材料拉伸试验第1部分：室温试验方法[S].

GB/T 228.1—2010, Metallic materials—Tensile testing—Part 1:Method of test at room temperature[S].

[22]GB/T 229—2020, 金属材料夏比摆锤冲击试验方法 [S].

GB/T 229—2020, Metallic materials—Charpy pendulum impact test method[S].

[23]JB/T 7030—2014, 汽轮发电机Mn18Cr18N无磁性护环锻件技术条件[S].

JB/T 7030—2014, Specification for Mn18Cr18N nonmagnetic retaining ring forgings for turbine generators [S].

服务与反馈：

【本网站尚未开通全文下载服务】【加入收藏】