NOZEL Jurnal Pendidikan Teknik Mesin最新文献

{"title":"ANALISIS PERFORMA BOILER BASUKI BERDASARKAN RASIO ANTARA BAHAN BAKAR DAN STEAM DI PT. INDO ACIDATAMA Tbk.","authors":"M. F. Putra, D. Wijayanto, Nugroho Agung Pambudi","doi":"10.20961/NOZEL.V1I1.28272","DOIUrl":"https://doi.org/10.20961/NOZEL.V1I1.28272","url":null,"abstract":"The research aims to investigate the condition of Basuki boiler based on the ratio between fuel consumption and steam production. The research used quantitative-descriptive method. The population of this research was daily record of Basuki boiler. The sample was daily record of Basuki boiler performance for 1 year (February 2015 to January 2016). The sample was taken using purposive sampling method. The research analyzed the ability of fuel to produce a ton (1000 kilograms) of steam. The ability of fuel was depended on the highest heating value (HHV) and water contain in the coal. Based on the result of the research, it can be concluded that Basuki boiler condition based on its ratio between fuel consumption and steam production was good, because the ratio that shown (144.09) was less than the company’s target (150), it meant that the boiler only used 144.09 kilograms of coal to produce a ton of steam. The average of fuel consumption for 1 year was 1,484.99 kg/h and the average of steam production was 10,305.76 kg/h.","PeriodicalId":233393,"journal":{"name":"NOZEL Jurnal Pendidikan Teknik Mesin","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124844101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ANALISIS IMPLEMENTASI KURIKULUM TEKNIK SEPEDA MOTOR-HONDA DI SMK PANCASILA SURAKARTA","authors":"Wiwit Riyanti, Suharno Suharno, D. Wijayanto","doi":"10.20961/NOZEL.V1I1.28290","DOIUrl":"https://doi.org/10.20961/NOZEL.V1I1.28290","url":null,"abstract":"This research aims to know: (1) relevance of learning school with Honda; (2) implementation of curriculum techniques motorcycles Honda in Vocational High School Pancasila Surakarta; (3) evaluation curriculum techniques motorcycles Honda in Vocational High School Pancasila Surakarta. This research is evaluative research. Data source derived from 98 students TSM-Honda, headmaster, Deputy Headschool of curriculum, curriculum development division Honda. Data techniques include by questionnaire, interview, observation, and documentation. This research used logic validity or reasoning that instrument is valid based on rational analysis. Apparatus are arranged based on reasoning should be referred to experts so this instrument truly intelligent before distributed to respondents. The procedure consists research method, determine, devise research instruments, data retrieval, data analysis, the withdrawal of conclusion. The conclusion is: (1) curriculum implementation of Motorcycle-Honda Engineering is composed of four aspects context, planning, execution and evaluation, curriculum implementation of Honda overall reaches 72% with a high category; (2) context aspect reaches 78% with top grade. This means that the aspect context which includes the relevance of learning school with Honda and Honda-TSM program eligibility is already proper; (3) planning aspect reached 68% with a high category. Aspects planning that includes an input of students, the quality of the applicants, the parties involved, the training of teacher preparedness, Honda's been good; (4) implementation aspect of the reach 74% with a high category. Implementation aspects of administrative arrangement that includes teaching, learning materials, tools and materials, media of learning, learning methods are already good; (5) evaluation aspect reached 67% with a high category. An evaluation includes elements of competency teachers, students, students ' value competency, communication with Honda, the success of curriculum, curriculum development is already good.","PeriodicalId":233393,"journal":{"name":"NOZEL Jurnal Pendidikan Teknik Mesin","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122730020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"STUDI RELEVANSI KURIKULUM KOMPETENSI KEAHLIAN TEKNIK KENDARAAN RINGAN DI SMKN 5 SURAKARTA DENGAN KEBUTUHAN DUNIA INDUSTRI SAAT SISWA MELAKSANAKAN PRAKERIN","authors":"Farhandika Akbar","doi":"10.20961/nozel.v2i2.43243","DOIUrl":"https://doi.org/10.20961/nozel.v2i2.43243","url":null,"abstract":"The purpose of this study was to find out: (1) Competency of expertise discussed in Light Vehicle Engineering Expertise Competence of SMKN 5 Surakarta; (2) Competency of expertise obtained by students of Light Vehicle Engineering Skills Competency of SMKN 5 Surakarta prior to the implementation of internship; (3) Competency of expertise needed by the industrial world from students when implementing internship; (4) Relevance of the Curriculum for Light Vehicle Engineering Competence of SMKN 5 Surakarta with the needs of the relevant industrial world from the implementation of internship. This type of research is a qualitative descriptive study. Sources of information in research are productive teachers and workshop or industry heads with information obtained by interviews and analysis of archives. The research process was carried out in two glasses, namely: first, observing the Competency of Light Vehicle Engineering Skills (KKTKR) of SMK 5 Surakarta to study the curriculum needed, comparing the competencies needed before students use apprenticeship. This competency is then recorded and arranged in the form of a simple questionnaire. The second stage is to bring a list of competencies taken before student internship to the industry to see its relevance to the needs of the industrial world. The results of this study indicate that the competencies discussed in the learning skills at KKTKR SMK 5 Surakarta provide the latest 13 revised curriculum in 2017. Competencies obtained from students in apprenticeship are competencies obtained from semester 1 to 3 mathematics lessons. These competencies are provided with competencies from compulsory subjects in class X, namely Image of Automotive Engineering, Basic Automotive Technology, and Automotive Basic Work. Equipped with competencies from the subjects of Light Vehicle Engine Maintenance, Chassis Maintenance and Transfer of Light Vehicle Power, and Light Vehicle Electrical Maintenance approved in semester XI 3. Competencies needed by the industry to be communicated to student apprenticeships related to automotive basics, such as tools -Technical tools such as hand tools and measuring instruments, general vehicle knowledge, security in workshop work. The industry also emphasizes the work relations of students who are good as supporters of implementing internship. The results of the study can be seen from two sides. Formally, the relevance level is more than 90%. While the implementation, there are findings where the level of understanding of students is still lacking including the basic automotive competencies that should have mastered","PeriodicalId":233393,"journal":{"name":"NOZEL Jurnal Pendidikan Teknik Mesin","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121244239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PENGARUH PENGGUNAAN TIPE ELEKTROLISER DAN JENIS LARUTAN PADA HYDROGEN ECO BOOSTER TERHADAP EMISI GAS BUANG SEPEDA MOTOR 4 TAK","authors":"A. Saputra","doi":"10.20961/NOZEL.V1I1.28480","DOIUrl":"https://doi.org/10.20961/NOZEL.V1I1.28480","url":null,"abstract":"The purpose of this research are: (1) Investigate the influence of the type of electrolyzer on Hydrogen Eco Booster towards the level of exhaust emissions (CO and HC) 4 stroke motorcycle. (2) Investigate the influence of the kind of solvent on Hydrogen Eco Booster towards the level of exhaust emissions (CO and HC) 4 stroke motorcycle. (3) Investigate the influence of the type of electrolyzer and the kind of solvent on Hydrogen Eco Booster towards the level of exhaust emissions (CO and HC) 4 stroke motorcycle. This research was conducted at the Automotive Laboratory of Mechanical Engineering Education, Teacher Training and Education Faculty Sebelas Maret University of Surakarta used a Honda Supra X 125 motorcycle, year of manufacture 2013. This study is an experimental research. The method of collecting data used in the research is measurement method. The data obtained from the test results were analyzed using Two-Way Anova Test and followed by One-Sample T Test and Scheffe Test. The results of this research are: (1) There is a significance effect on the type of electrolyzer on Hydrogen Eco Booster towards to decrease the level of exhaust emissions (CO and HC) 4 stroke motorcycle, (Sig-value of CO gas=0.001 < α=0.05) and (Sig-value of HC gas=0.000 < α=0.05). (2) There is a significance effect on the kind of solvent on the Hydrogen Eco Booster towards to decrease the level of exhaust emissions (CO and HC) 4 stroke motorcycle, (Sig-value of CO gas=0.000 < α=0.05) and (Sig-value of HC gas=0.000 < α=0.05). (3) There is a significance effect interaction between the type of electrolyzer and the kind of solvent on the Hydrogen Eco Booster towards to decrease the level of exhaust emissions (CO and HC) 4 stroke motorcycle, (Sig-value of CO gas=0.000 < α=0.05) and (Sig-value of HC gas=0.000 < α=0.05). The lowest CO gas obtained on the Wet Cell type using the kind of solvent KOH with a decrease of 84.41%. The lowest HC gas obtained on the Dry Cell type using the kind of solvent NaOH with a decrease of 69.62%.","PeriodicalId":233393,"journal":{"name":"NOZEL Jurnal Pendidikan Teknik Mesin","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129397956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ANALISIS KUALITAS REPAIR WELDING CAST WHEEL ALUMINIUM MENGGUNAKAN METODE PENGELASAN OKSI-ASETILIN DENGAN PERLAKUAN PREHEATING DAN POST WELD HEAT TREATMENT","authors":"Aftoni Heri Septian Pamungkas, Budi Harjanto, Indah Widiastuti","doi":"10.20961/NOZEL.V1I1.28280","DOIUrl":"https://doi.org/10.20961/NOZEL.V1I1.28280","url":null,"abstract":"<p><em>The aims of this research are to find out chemical composition, micro structure, the hardness </em><em>level</em><em>, and the strength impact of raw material and after welding using </em><em>preheating and post weld heat treatment </em><em>on cast wheel aluminum</em><em>.</em><em> Those data were analyzed using comparative descriptive method. The equipments used for measuring the chemical composition, microstructure, the hardness </em><em>level</em><em>, and the strength impact are as following: Spectrometer Metal Scan, Olympus Metallurgy</em><em> </em><em>Microscope, Vi</em><em>k</em><em>ers Hardness Tester and Charpy Tester. Based on the experiment results, it can be concluded that the chemical composition of the main constituent of cast wheel aluminum is 7,41% Si,</em><em> </em><em>which can be categorized in the aluminum alloy AA4343 series. The experiment results showed a decrease in the extent of the microstructure of primary Si phase after welding.</em><em> Si primary phase were spread well around the surface of </em> <!--?mso-application progid=\"Word.Document\"?--> 12α\"> -Al<em> </em><em>but the result Si </em><em>after oxy-acetylene </em><em>welding process </em><em>w</em><em>it</em><em>h</em><em> preheating and </em><em>PWHT indicates that the primary Si phase is reducing so that the α-Al phase is dominating</em><em>. </em><em>The hardness </em><em>level</em><em> on the welding result decreased from raw material amounted to 103.381 kgf/mm² be 40.112 kgf/mm² in the welding area and 44.378 kgf/mm² in area Heat Affected Zone (HAZ). The strength impact number on welding</em><em> </em><em>area showed a slight increase from the raw material areas of 0.055 joules/mm²to the welding of 0.058 joule/mm². </em></p>","PeriodicalId":233393,"journal":{"name":"NOZEL Jurnal Pendidikan Teknik Mesin","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127346226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PENGARUH KUAT ARUS PADA PENGELASAN PADUAN ALUMINIUM 6061 DENGAN MENGGUNAKAN METODE LAS TIG TERHADAP KEKERASAN DAN STRUKTUR MIKRO","authors":"Rochim Toat Wicaksono, Suharno Suharno, Budi Harjanto","doi":"10.20961/NOZEL.V1I1.28484","DOIUrl":"https://doi.org/10.20961/NOZEL.V1I1.28484","url":null,"abstract":"The objective of research was to find out the effect of current on microstructure and hardness value in Aluminium Alloy 6061 before (raw material) and after welding using Tungsten Inert Gas (TIG) welding method with filler rod ER4043. This research uses experiment methods. Technique of analyzing data used was a descriptive comparative research. The instruments used for testing microstructure and hardness were Olympus Metallurgical Microscope and Vikers Hardness Tester. Base on the result of research, it could be concluded that the result of microstructure testing showed the reduced Mg2Si phase width after welding. In raw material, the Mg2Si phase seemed to diffuse surrounding the α-Al phase surface, but the result of welding using TIG welding method with current of I00 A, 110 A, and 115A showed that Mg2Si phase reduced in each specimen, so that α-Al phase was very dominant. The hardness value of hardness result showed the different hardness level. The specimen with current of 110A had higher hardness level of 65.4 VHN than the specimen with current of 100 A (55.7 VHN) and 115 A (55.9 VHN). The result of hardness testing on raw material was 120.4 VHN. This research showed that the welding using varying current changed microstructure and affected the hardness value of Aluminum Alloy 6061.","PeriodicalId":233393,"journal":{"name":"NOZEL Jurnal Pendidikan Teknik Mesin","volume":"50 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116529754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PENGEMBANGAN MEDIA PEMBELAJARAN CNC BERBASIS PERANGKAT LUNAK ANIMASI","authors":"Dwi Kusuma Ulinuha","doi":"10.20961/NOZEL.V1I1.28482","DOIUrl":"https://doi.org/10.20961/NOZEL.V1I1.28482","url":null,"abstract":"This research aims to (1) develop an instructional material based animation software for CNC course, (2) evaluate instructional material for CNC course that has been developed. The research was conducted at the Department of Mechanical Engineering Education, Faculty of Teacher Training and Education, Sebelas Maret University Surakarta. This research used Multimedia Development Life Cycle (MDLC) as research procedure, which consists of six stages, concept, design, collecting material, assembly, testing and distribution. Evaluation of instructional material for CNC course was performed by ask potential users to operate CNC instructional material that have been developed, then get response from potential users through a questionnaire. Potential users are divided into two categories, lecturers of CNC and CAM courses and students of Mechanical Engineering Education who take CNC and CAM courses in the academic year 2015/2016. Questionnaire for lecturers of CNC and CAM course reviewing instructional material from aspects of learning content, interaction, and presentation of the material. The questionnaire was given to 3 lecturers consisting of 15 point statements with Rating Scale as assessment system on intervals 1-5. Questionnaire for student reviewing instructional material from aspect of learning motivation as one of instructional material function. Questionnaire was given to 26 students consisting of 20 point statements with Likert Scale as assessment system on intervals1-5. The results of the research show (1) the development of instructional material for CNC course used Adobe Flash CS6 as main software with MDLC as development procedure, (2) the evaluation results show the instructional material for CNC course that developed gets (a) in aspects of learning content, interaction, and presentation of the material, the instructional material for CNC course gets very good category with percentage 90,22%, (b) in the aspect of learning motivation as one of instructional material function, the instructional material for CNC course gets good categories with percentage 78,39%.","PeriodicalId":233393,"journal":{"name":"NOZEL Jurnal Pendidikan Teknik Mesin","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114783629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"UPAYA MENINGKATKAN MOTIVASI DAN HASIL BELAJAR SISWA MELALUI MODEL PEMBELAJARAN PRACTICE REHEARSAL PAIRS PADA PEMBELAJARAN PRAKTIK PEMESINAN KELAS XI TMB SMK BHINNEKA KARYA SURAKARTA","authors":"Arseta Budi Utomo, D. Wijayanto, Basori Basori","doi":"10.20961/NOZEL.V1I1.28476","DOIUrl":"https://doi.org/10.20961/NOZEL.V1I1.28476","url":null,"abstract":"The research is intended to improve successfully learning motivation and achievement in Mechanical Engineering B, 11th grade at vocational high school of Bhinneka Karya Surakarta in Machinery Practical Learning using Practice Rehearsal Pairs learning model. The research is Classroom Action Research that conducted in two cycles. Each cycle consisted of four stages, there are: planning, acting, observing, and reflecting. The instruments to collect the data, there are questionnaire, interview, test, observation, and documentation. The data was carried out using descriptive qualitative analysis. The result of research showed that there is an improvement in students’ learning motivation and achievement. The student’ learning motivation increased from 74.5% in cycle 1 to 92.59% of students having learned motivation belonging to minimally good category in cycle 2. The students’ cognitive learning achievement increased from 66.67% to 88.89%, the affective learning achievement increased from 81.48% to 85.19%, and the psychomotor learning achievement of students increased from 74.07% to 88.89% of students who could achieve MPC.","PeriodicalId":233393,"journal":{"name":"NOZEL Jurnal Pendidikan Teknik Mesin","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131994620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PENGARUH PEMANASAN BAHAN BAKAR MELALUI 2 PIPA TEMBAGA BERSIRIP RADIAL PADA UPPER TANK RADIATOR DAN PENAMBAHAN ETANOL PADA BAHAN BAKAR TERHADAP EMISI GAS BUANG MOBIL SUZUKI APV","authors":"I. Firdaus","doi":"10.20961/nozel.v1i3.50762","DOIUrl":"https://doi.org/10.20961/nozel.v1i3.50762","url":null,"abstract":"This research aims to : 1) Investigate the effect of heating fuel through radial finned copper pipe in the upper tank of the radiator exhaust emissions on cars Suzuki APV; 2) Investigate the effect of adding ethanol to the fuel pertalite against exhaust emissions on cars Suzuki APV; 3) Investigate the effect of heating fuel through radial finned copper pipe in the upper tank of the radiator and the addition of ethanol to the fuel pertalite against exhaust emissions on cars Suzuki APV; 4) Analyze the comparison between the results of the fuel mixture pertalite heating and heating fuel ethanol pertamax through two copper pipe to the exhaust emissions of the Suzuki APV. This research use you right experimental method with a comparative descriptive data analysis. The sample used is a Suzuki APV with G15A1D100006 machine number. Data were obtained from a large  measurement exhaust emission levels CO and HC for 20 seconds at idle rotation with variations mix pertalite and ethanol as much as 0%, 5%, 10%, 15%, 20%, 25%, and 30% using the method without heating fuel and the use of heating fuel through a copper pipe finned radial variation fin spacing of 10 mm, 20 mm and 30 mm In the upper radiator tank. Data obtained from the research that is inserted into the table and displayed in a graph, and then analyzed. The results of this study were: 1) heating fuel pertalite in radial finned pipe through the upper radiator tank to the injection cars Suzuki APV can decrease the value of exhaust emissions of CO and HC;2) Addition of ethanol in fuel pertalite with higher levels of 0% to 20% decline in the value of exhaust emissions of CO and HC. Exhaust emissions of CO and HC to increase again in the levels of ethanolblending with levels of 25% and 30%; 3) heating fuel in a radial finned pipe through the upper radiator tank to the injection Suzuki APV car down the value of exhaust emissions of CO and HC. Value exhaust emissions lowest CO occur in the application of finned pipe distance of 10 mm with a mixture of 20% ethanol content of 19% and HC 0.3 by 2 24 to 33 ppm; 4) The value of exhaust emissions of CO and HC in blending ethanol content to 20% lower than the lowest value of the results of exhaust emissions of CO and HC pertamax pure with a value of 0.354% levels of CO and HC at 229.67 Ppm.","PeriodicalId":233393,"journal":{"name":"NOZEL Jurnal Pendidikan Teknik Mesin","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125153918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pengaruh Variasi Bahan Pengikat Terhadap Kekuatan Cetakan Pasir, Permeabilitas, Fluiditas, Kekerasan Logam dan Kualitas Hasil Pengecoran Logam Paduan Al-Si Dengan Metode Gravity Casting","authors":"D. Putra","doi":"10.20961/NOZEL.V3I2.52098","DOIUrl":"https://doi.org/10.20961/NOZEL.V3I2.52098","url":null,"abstract":"This research was conducted to investigate the effect of binder variation including bentonit, lapindo mud, and portland cement on the silica molding sand strength, permeability, fluidity, metal hardness and the quality of Al-Si alloy casting by using gravity casting method. The experimental design was used on this research and analyzed by using descriptive data analysis. The result showed molding sand containing 15% lapindo mud binder had the highest wet compressive strength (8,73 N/cm2). The molding sand containing 15% portland cement binder had the highest dry compressive strength (>32 N/cm2). The highest wet tensile strength was resulted by the molding sand containing 15% bentonit binder (3,33 N/cm2), while the highest dry tensile strength was resulted by the molding sand containing 15% portland cement binder (18,60 N/cm2). The highest wet shear strength was resulted by the molding sand containing 15% portland cement binder (0,57 N/cm2), while the highest dry shear strength was resulted by the molding sand containing 15% portland cement binder (1,03 N/cm2). The molding sand containing 15% bentonit binder had the finest permeability (210 mm/minute). In the real practical application, the molding sand containing 15% portland cement binder was unable to result an appropriate molding strength when manually compressed in cope and drag (casting flask), thus it was unable to use as metal pouring media. The molding sand containing 15% lapindo mud binder had the finest fluidity but it had the lowest hardness (120,30 HV). The molding sand containing 15% bentonit binder resulted the best Al-Si alloy casting quality and the highest hardness (129,60 HV).","PeriodicalId":233393,"journal":{"name":"NOZEL Jurnal Pendidikan Teknik Mesin","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125359030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}