PENGARUH TEMPERATUR TUANG DAN KANDUNGAN SILIKON TERHADAP CACAT HOT TEARING PADA PENGECORAN PADUAN Al-Si DENGAN CETAKAN CRCM VERTIKAL
Aluminium alloys can not be separated from a variety of defects that occur during the casting such as porosity, shrinkage, hot tearing, small holes, misrun and blister. The defects occur in foundry products are usually caused by poor mixing, improper casting, which is too rapid freezing and mold des...
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| Format: | Thesis |
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[Yogyakarta] : Universitas Gadjah Mada
2012
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| _version_ | 1797032495965798400 |
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| author | , BAHTIAR, S.T. , Dr. Suyitno, ST, M. Sc. |
| author_facet | , BAHTIAR, S.T. , Dr. Suyitno, ST, M. Sc. |
| author_sort | , BAHTIAR, S.T. |
| collection | UGM |
| description | Aluminium alloys can not be separated from a variety of defects that occur
during the casting such as porosity, shrinkage, hot tearing, small holes, misrun and
blister. The defects occur in foundry products are usually caused by poor mixing,
improper casting, which is too rapid freezing and mold design ineffective. The
study was conducted to determine the likelihood of hot tearing in Al-Si castings
using a mold form CRCM horizontal type. CRCM mold vertical type is a
modification of the shape of the mold testing of hot tearing CRC (constrained rod
casting) that has been done by previous researchers. Modifications were made
aiming to obtain the data necessary to analyze the influence of pouring
temperature and silicon content of this defect.
Effect of silicon content and pouring temperature on hot tearing during
permanent mold casting were investigated using Constrained Rod Casting
Modified (CRCM) in steel mold. The alloys included Al-0.24%Si, Al-1.19%Si,
Al-1.66%Si and Al-2.5%Si. Pouring temperature were used in this research is 710
OC, 760 OC and 810 OC. The hot tearing sensitivity (HTS) was determined based
on the hot tear severity rating (Ci) and length of the rod (Li) where the hot tear
occurs.
At the same pouring temperature, the HTS was significantly lower at
2.6%Si. Increasing pouring temperature decreases hot tearing in Al-2.6% Si alloy,
but the effect is not significantly for another alloys. Length of the rod affects the
type of cracks are formed and the resulting value of the HTS. HTS maximum
value occurs in a long rod. Rod number 4, rod number 5 and 6 are composed of
bars cracks kind of moderate to complete and has a number of crack 73.9% of the
total number of cracks of cast products. |
| first_indexed | 2024-03-13T22:39:16Z |
| format | Thesis |
| id | oai:generic.eprints.org:99478 |
| institution | Universiti Gadjah Mada |
| last_indexed | 2024-03-13T22:39:16Z |
| publishDate | 2012 |
| publisher | [Yogyakarta] : Universitas Gadjah Mada |
| record_format | dspace |
| spelling | oai:generic.eprints.org:994782016-03-04T08:45:47Z https://repository.ugm.ac.id/99478/ PENGARUH TEMPERATUR TUANG DAN KANDUNGAN SILIKON TERHADAP CACAT HOT TEARING PADA PENGECORAN PADUAN Al-Si DENGAN CETAKAN CRCM VERTIKAL , BAHTIAR, S.T. , Dr. Suyitno, ST, M. Sc. ETD Aluminium alloys can not be separated from a variety of defects that occur during the casting such as porosity, shrinkage, hot tearing, small holes, misrun and blister. The defects occur in foundry products are usually caused by poor mixing, improper casting, which is too rapid freezing and mold design ineffective. The study was conducted to determine the likelihood of hot tearing in Al-Si castings using a mold form CRCM horizontal type. CRCM mold vertical type is a modification of the shape of the mold testing of hot tearing CRC (constrained rod casting) that has been done by previous researchers. Modifications were made aiming to obtain the data necessary to analyze the influence of pouring temperature and silicon content of this defect. Effect of silicon content and pouring temperature on hot tearing during permanent mold casting were investigated using Constrained Rod Casting Modified (CRCM) in steel mold. The alloys included Al-0.24%Si, Al-1.19%Si, Al-1.66%Si and Al-2.5%Si. Pouring temperature were used in this research is 710 OC, 760 OC and 810 OC. The hot tearing sensitivity (HTS) was determined based on the hot tear severity rating (Ci) and length of the rod (Li) where the hot tear occurs. At the same pouring temperature, the HTS was significantly lower at 2.6%Si. Increasing pouring temperature decreases hot tearing in Al-2.6% Si alloy, but the effect is not significantly for another alloys. Length of the rod affects the type of cracks are formed and the resulting value of the HTS. HTS maximum value occurs in a long rod. Rod number 4, rod number 5 and 6 are composed of bars cracks kind of moderate to complete and has a number of crack 73.9% of the total number of cracks of cast products. [Yogyakarta] : Universitas Gadjah Mada 2012 Thesis NonPeerReviewed , BAHTIAR, S.T. and , Dr. Suyitno, ST, M. Sc. (2012) PENGARUH TEMPERATUR TUANG DAN KANDUNGAN SILIKON TERHADAP CACAT HOT TEARING PADA PENGECORAN PADUAN Al-Si DENGAN CETAKAN CRCM VERTIKAL. UNSPECIFIED thesis, UNSPECIFIED. http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=55727 |
| spellingShingle | ETD , BAHTIAR, S.T. , Dr. Suyitno, ST, M. Sc. PENGARUH TEMPERATUR TUANG DAN KANDUNGAN SILIKON TERHADAP CACAT HOT TEARING PADA PENGECORAN PADUAN Al-Si DENGAN CETAKAN CRCM VERTIKAL |
| title | PENGARUH TEMPERATUR TUANG DAN KANDUNGAN SILIKON
TERHADAP CACAT HOT TEARING PADA PENGECORAN PADUAN
Al-Si DENGAN CETAKAN CRCM VERTIKAL |
| title_full | PENGARUH TEMPERATUR TUANG DAN KANDUNGAN SILIKON
TERHADAP CACAT HOT TEARING PADA PENGECORAN PADUAN
Al-Si DENGAN CETAKAN CRCM VERTIKAL |
| title_fullStr | PENGARUH TEMPERATUR TUANG DAN KANDUNGAN SILIKON
TERHADAP CACAT HOT TEARING PADA PENGECORAN PADUAN
Al-Si DENGAN CETAKAN CRCM VERTIKAL |
| title_full_unstemmed | PENGARUH TEMPERATUR TUANG DAN KANDUNGAN SILIKON
TERHADAP CACAT HOT TEARING PADA PENGECORAN PADUAN
Al-Si DENGAN CETAKAN CRCM VERTIKAL |
| title_short | PENGARUH TEMPERATUR TUANG DAN KANDUNGAN SILIKON
TERHADAP CACAT HOT TEARING PADA PENGECORAN PADUAN
Al-Si DENGAN CETAKAN CRCM VERTIKAL |
| title_sort | pengaruh temperatur tuang dan kandungan silikon terhadap cacat hot tearing pada pengecoran paduan al si dengan cetakan crcm vertikal |
| topic | ETD |
| work_keys_str_mv | AT bahtiarst pengaruhtemperaturtuangdankandungansilikonterhadapcacathottearingpadapengecoranpaduanalsidengancetakancrcmvertikal AT drsuyitnostmsc pengaruhtemperaturtuangdankandungansilikonterhadapcacathottearingpadapengecoranpaduanalsidengancetakancrcmvertikal |