锻压技术

空心钢锭空洞缺陷锻合研究

英文标题：Research on the cavity defect closure of hollow ingot

作者：王庆辛郭丰伟李巳甲田继红刘建生

关键词：空心钢锭数值模拟空洞闭合

分类号：

出版年,卷(期):页码：2014,39(10):9-14

摘要：

大型筒形件锻造过程中，利用空心钢锭进行生产相比于传统工艺具有偏析少、材料利用率高、短流程、能耗低等优点。由于空心钢锭铸造时内外同时进行冷却，其最终凝固位置大约在壁厚的1/2处，此处存在的主要缺陷之一为空洞型缺陷。通过Deform-3D数值模拟软件，分析了镦粗、芯轴拔长、马杠扩孔对空心钢锭球形及径向、轴向、切向空洞型缺陷闭合的作用效果和影响规律,镦粗压下量为40%时可以锻合径向空洞缺陷但不能锻合轴向空洞缺陷，并对径向和轴向空洞缺陷闭合进行了实验验证。研究表明，空心钢锭制坯工艺可不选用镦粗，直接进行拔长或扩孔即可避免空洞缺陷的产生。

During the forging of large cylinder, the production using hollow steel ingot has the advantages of less segregation, higher material utilization rate, shorter production cycle and lower energy consumption compared with the traditional process. Both the inside and outside are cooling at the same time when hollow steel ingot is casted, and the position of the final solidification location is about the middle of the hollow steel ingot, while one of the main defects is cavity defect there. With the numerical simulation software of Deform-3D,the deformation effect and influence law were studied including upsetting, drawing and enlarging in the process of hollow ingots spherical，radial, axial and tangential cavity defect closure. Under 40% deformation of upsetting，the radial cavity defect could be closed but the axial cavity defect could not, and the experimental verifications for radial and axial cavity defects closure were done. The research shows that drawing or enlarging can be conducted directly without upsetting for the hollow steel ingot blocking process,which avoids the generation of cavity defect.

基金项目：

山西省自然科学基金资助项目（2013011022-3）；山西省研究生优秀创新项目（20123101）；山西省2013年国家级&省级大学生创新创业训练计划项目（201310109004，2013232）；太原科技大学大学生创新创业训练项目（xj2012021,xj2013072）

王庆辛（1987-），男，硕士研究生

参考文献：

[1]叶玉娟，高全德，孙振环，等.4Cr16Mo石化主轴锻造工艺研究[J].锻压技术，2013，38（5）：33-36.

Ye Y J，Gao Q D，Sun Z H，et al. Research on forging process of 4Cr16Mo petrochemical axle[J].Forging & Stamping Technology, 2013，38（5）：33-36.

[2]邢世勋，于广文.空心钢锭生产技术的发展与应用[J].高新技术，2013，（1）：26-29.

Xing S X，Yu G W，The development and application of hollow ingot production technology[J].High and New Technology, 2013，（1）：26-29.

[3]陈玉明，宋雷钧，赵长春，等.空心钢锭制造技术在一重的发展概况和应用前景[J].大型铸锻件，2002，（2）：43

Chen Y M，Song L J，Zhao C C，et al. The development situation and application prospect of hollow ingot manufacturing in Yi zhong[J].Heavy Castings And Forgings,2002，（2）：43.

[4]聂颍新.加氢反应器等大型石化容器制造的发展现状[J].压力容器.2010，27(8)：38.

Nie Y X. Current situation of manufacturing of large petrochemical pressure vessels[J]. The Pressure Vessel，2010,27（8）：38.

[5]Namba A T, Miyata K.用空心钢锭制造的压力容器大型环段锻件[J].大型铸锻件，1986，（2）：49-50.

Namba A T, Miyata K. Using hollow ingot make large ring forgings of pressure vessel[J].Heavy Castings and Forgings，1986，（2）：49-50.

[6]曹民荣.2.1吨空心钢锭的锻比试验及其数据的回归分析[J].一重技术,1991，（2）：22-29.

Cao M R. 2.1 tons hollow ingot forging ratio test and regression analysis of data[J].CFHI Technology,1991，（2）:22-29.

[7]宋雷钧，赵长春，陈玉明，等.空心钢锭锻造工艺的研究[J].大型铸锻件．2002，（1）：27-29.

Song L J，Zhao C C，Chen Y M，et al. Research for forging technology of hollow ingot[J]. Heavy Castings and Forgings，2002，（1）:27-29.

[8]岳文彦，马庆贤. 大型空心钢锭锻造工艺探讨[J].锻压技术，2012，37（2）：10-14.

Yue W Y，Ma Q X. Research on heavy hollow ingot forging process[J].Forging & Stamping Technology,2012，37（2）：10-14.

[9]丁宇.钢锭孔洞型缺陷的锻合及空心钢锭的锻造[J].大型铸锻件，1998,（4）：24-33.

Ding Y. Closing up porosity flaw of ingot and hollow ingot forging[J].Heavy Castings and Forgings,1998，（4）：24-33.

[10]康海鹏，左淼，李浩强，等.有限元模拟技术在主体锻造工艺设计中的应用[J].锻压技术，2012,37(1):28-30.

Kang H P，Zuo M，Li H Q，et al. Application of finite element simulation in case forging technology design[J].Forging & Stamping Technology,2012,37(1):28-30.

服务与反馈：

【文章下载】【加入收藏】