Article(id=1289282137488728868, tenantId=1146029695717560320, journalId=1287019424739590152, issueId=1289282136750539420, articleNumber=null, orderNo=null, doi=10.12442/j.issn.1002-185X.20250073, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1752336000000, receivedDateStr=2025-07-13, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1785318415281, onlineDateStr=2026-07-29, pubDate=1783612800000, pubDateStr=2026-07-10, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1785318415281, onlineIssueDateStr=2026-07-29, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1785318415281, creator=13701087609, updateTime=1785318415281, updator=13701087609, issue=Issue{id=1289282136750539420, tenantId=1146029695717560320, journalId=1287019424739590152, year='2026', volume='55', issue='7', pageStart='1701', pageEnd='1848', issueExtLink='null', onlineDate='null', pubDate='1783612800000', pubDateStr='2026-07-10', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1785318415105, creator='13701087609', updateTime=1785389094930, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1289578589494555490, tenantId=1146029695717560320, journalId=1287019424739590152, issueId=1289282136750539420, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1289578589498749795, tenantId=1146029695717560320, journalId=1287019424739590152, issueId=1289282136750539420, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=1701, endPage=1708, ext={EN=ArticleExt(id=1289282137669083941, articleId=1289282137488728868, tenantId=1146029695717560320, journalId=1287019424739590152, language=EN, title=Optimization of Integral Investment Casting Process for Large-Scale and Complex Thick-Walled Titanium Alloy Castings in Gas Turbines, columnId=null, journalTitle=Rare Metal Materials and Engineering, columnName=null, runingTitle=null, highlight=null, articleAbstract=

Large-scale and complex thick-walled titanium alloy casings produced by investment casting are key components in heavy-duty gas turbine. Characterized by their large contour size, substantial wall thicknesses, and complex shapes, these castings often face challenges such as difficult monolithic molding, numerous shrinkage pore and shrinkage cavity defects, and low dimensional accuracy, limiting the assembly and use of high-power gas turbines. The solidification temperature field and flow field during centrifugal investment casting process were investigated using the ProCAST software. Results show that the potential isolated liquid phase regions are identified. According to the characteristics of centrifugal casting, the mathematical models for designing spiral runner and inclined riser are derived. Based on this, an integrated gating system is developed, which combines exhaust gas and slag collection, flow regulation, and temperature field optimization, thereby significantly reducing solidification defects in castings. Furthermore, a wax mold splicing scheme is designed, and a wax mold tree for the gating system is constructed, featuring a straight runner, cross runner, and inner runner with cross-sectional area ratios of 1∶2.5∶6. Additionally, through the integration of dimensional calibration and shell reinforcement tooling, high-quality castings with complete filling, good metallurgical quality, and precise dimensional accuracy are achieved. This work provides effective technical guidance for the manufacturing of titanium alloy casings in heavy-duty gas turbines, and the gating system configuration offers reference value for other large-scale and complex thick-walled titanium alloy castings.

, authors=Xing Ran¹, Yisi Chen², Di Wen³, Xingquan Long³, Xiaohui Gao³, Liangju He⁴, Peijie Li², authorsList=Xing Ran, Yisi Chen, Di Wen, Xingquan Long, Xiaohui Gao, Liangju He, Peijie Li, authorCompany=null, correspAuthors=Xing Ran, authorNote=null, correspAuthorsNote=, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1289282137971073830, articleId=1289282137488728868, tenantId=1146029695717560320, journalId=1287019424739590152, language=CN, title=燃气轮机大型复杂厚壁钛合金铸件整体精铸成形工艺优化, columnId=1289282137585205918, journalTitle=稀有金属材料与工程, columnName=材料科学, runingTitle=null, highlight=null, articleAbstract=

熔模精铸大型复杂厚壁钛合金机匣是重型燃气轮机的核心部件之一，该铸件具有轮廓高、壁厚大和形状复杂等特征，存在整体成形困难、缩松缩孔缺陷多、尺寸精度低等难题，限制了高功率燃气轮机的装配和使用。本工作采用ProCAST软件开展了离心铸造过程凝固温度场和流场研究，通过分析模拟结果确定了潜在的孤立液相区范围，根据离心铸造特性推导出用于设计螺旋形横浇道和倾斜冒口的数学模型，基于此构建了集合排气集渣、调节流量和优化温度场的一体化浇注系统结构，能够有效降低凝固缺陷。进一步，开发了蜡模分体拼接方案，同时构筑了直浇道、横浇道、内浇道截面积比例为1∶2.5∶6的浇注系统蜡模树组，结合尺寸定型和型壳加固工装，最终获得了充填完整、冶金质量良好和尺寸精确的优质铸件。为重型燃气轮机的钛合金机匣规模化制造提供了有效的技术指导，其浇注系统构型对于其他大型复杂厚壁钛合金铸件也有一定参考价值。

, authors=冉兴¹, 陈义斯², 文迪³, 龙兴权³, 高晓慧³, 何良菊⁴, 李培杰², authorsList=冉兴, 陈义斯, 文迪, 龙兴权, 高晓慧, 何良菊, 李培杰, authorCompany=null, correspAuthors=冉兴, authorNote=, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=MsSOI0r94JJBHjVxFcaIKw==, magXml=ioNaHvRRuCJahVAG8Qt8pA==, pdfUrl=null, pdf=Pdvm5y4K6rUELH6zs4KuyA==, pdfFileSize=9536368, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=r/piiZOZv1KV9fuDG/OLow==, mapNumber=null, fund=null)}, authors=[Author(id=1289519677546275140, tenantId=1146029695717560320, journalId=1287019424739590152, articleId=1289282137488728868, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=ranxing257@163.com, emailSecond=null, emailThird=null, correspondingAuthor=1, authorType=1, ext={EN=AuthorExt(id=1289519677621772614, tenantId=1146029695717560320, journalId=1287019424739590152, articleId=1289282137488728868, authorId=1289519677546275140, language=EN, stringName=Xing Ran, firstName=Xing, middleName=null, lastName=Ran, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=¹, address=^1.AVIC Heavy Machinery Co., Ltd, Guiyang 550005, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1289519677701464391, tenantId=1146029695717560320, journalId=1287019424739590152, articleId=1289282137488728868, authorId=1289519677546275140, language=CN, stringName=冉兴, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=¹, address=^1．中航重机股份有限公司，贵州 贵阳 550005, bio={"content":"

冉兴，男，1968年生，博士，研究员级高级工程师，中航重机股份有限公司，贵州 贵阳 550005，E-mail: ranxing257@163.com，ranx@avic.com

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冉兴，男，1968年生，博士，研究员级高级工程师，中航重机股份有限公司，贵州 贵阳 550005，E-mail: ranxing257@163.com，ranx@avic.com

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