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Design of JIB Crane 600 kg Electric Powered Yahya; Indra Gunawan
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 1 No. 4 (2022): IJRVOCAS - Special Issues
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (631.852 KB) | DOI: 10.53893/ijrvocas.v1i4.76

Abstract

As it is known that the construction of high-rise buildings requires a tool in the form of a JIB Crane, which is used to transport materials from the bottom to the top. This JIB Crane is installed at the top of the tall building. In this case to design this tool requires welding and also a hook that is able to withstand the load being transported and moved. In this plan, the material must be chosen and also careful calculations for certain parts such as welded joints. In this study, a JIB Crane was designed with an electric drive to carry a load of 600 kg. And based on the calculations obtained, the load supported by the construction of the JIB Crane design is able to withstand the load where the load from the design is greater than the load that occurs.
The Study Quenching Process on Rubber Tapping Knives Home Industry Production Indra Gunawan; Yahya; Firdaus
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 2 No. 1 (2022): IJRVOCAS - April
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v2i1.98

Abstract

The rubber tapping knives produced by blacksmiths have cracks and chipped and even broken on their blades, so rubber farmers must often replace them with new knives. Thus the product cannot be used for a long time and has reduced economic value. The cause of this rubber tapping knives made by blacksmiths is easily damaged because the gilding method on the product is not done properly. So the product was produced have a relatively low level of hardness. This study aims to determine the effect of the hardening and quenching process on the hardness of rubber tapping knives made by blacksmiths. Data of test were analyzed using ANOVA with full factorial level design, main effect model design, and 3 replications assisted with Design-Expert software. At a temperature of 800℃, the maximum hardness value of 62,8 HRC obtained from the quenching results using a water cooling media, while the minimum hardness value of 62,2 HRC was obtained from oil cooling media. At a temperature of 850℃ the maximum hardness value of 60,4 HRC obtained from the quenching results using water cooling media, and the minimum hardness value obtained from the oil cooling media is 59,1 HRC.