熔模铸造高温合金圆角尺寸偏差与传递规律

余童; 汪东红; 吴文云; 雷四雄; 谭诗薪; 郝新; 周建新; 计效园; 疏达

doi:10.15980/j.tzzz.2021.06.026

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熔模铸造高温合金圆角尺寸偏差与传递规律
Radius Dimension Deviation and Transfer Law of Fillet in Investment Casting Superalloy
2021年41卷第6期页码：786-789
纸质出版日期： 2021 ，
DOI： 10.15980/j.tzzz.2021.06.026

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[1]余童,汪东红,吴文云,雷四雄,谭诗薪,郝新,周建新,计效园,疏达.熔模铸造高温合金圆角尺寸偏差与传递规律[J].特种铸造及有色合金,2021,41(06):786-789.

Yu Tong, Wang Donghong, Wu Wenyun, et al. Radius Dimension Deviation and Transfer Law of Fillet in Investment Casting Superalloy[J]. Special Casting & Nonferrous Alloys, 2021,41(6):786-789.
[1]余童,汪东红,吴文云,雷四雄,谭诗薪,郝新,周建新,计效园,疏达.熔模铸造高温合金圆角尺寸偏差与传递规律[J].特种铸造及有色合金,2021,41(06):786-789. DOI： 10.15980/j.tzzz.2021.06.026.

Yu Tong, Wang Donghong, Wu Wenyun, et al. Radius Dimension Deviation and Transfer Law of Fillet in Investment Casting Superalloy[J]. Special Casting & Nonferrous Alloys, 2021,41(6):786-789. DOI： 10.15980/j.tzzz.2021.06.026.

摘要

熔模铸造过程的蜡模制备、型壳制备与铸件凝固等过程中易发生圆角尺寸偏差

是影响铸件尺寸精度的重要因素。设计具有5个内倒角与1个外倒角的圆角模型

采用KC3898NRR蜡料填充蜡模

进行陶瓷型壳制备

并浇注K423、K424、K438高温合金铸件;用Geomagic Control三维比对软件进行圆角半径尺寸偏差分析。结果发现

圆角半径尺寸在蜡模制备中偏差范围在3%～30%

陶瓷型壳的受热膨胀修正范围为2%～8%

其中K438高温合金浇注的铸件圆角半径尺寸偏差最小。

Abstract

Dimensional deviation of fillet is an important factor in wax mold preparation

shell preparation and casting solidification in investment casting

which affects the dimensional accuracy of castings. A fillet model with 5 inner chamfers and 1 outer chamfer was designed

and KC3898 NRR wax was used to fill the wax mold and prepareceramic shells.The K423

K424

K438 superalloy castings were poured

and Geomagic Control software was conducted for deviation analysis of fillet radius dimension. The deviation of the fillet radius dimension during the preparation of wax molds is in range of 3% to 30%

and the thermal expansion correction range of the ceramic shell is 2%～8%. Among the three alloys

castings poured by K438 superalloy exhibit the smallest fillet radius dimension deviation.