The objective of this study is to determine the outstanding tensile value on welding of little carbonate steel electrode 6013/ Ө 2.5 x 350 mm in tensile test. Specimen in tested is a lower carbon steel found in market or sometimes available on welding workshops of plate form. This plate is made refer to Standard Tensile Test specimen ASTM E-8M in thick 5 mm and made plot V 450 in twelve pieces. In welding specimen, inflow current varieties with 60, 80, 100, 120 Ampere and constant power of 20 volt and welding position tilted ranges 600 – 700. In the test found data the lowest tensile strength is 160.62 Mpa of welding current power 60 Ampere and the greatest tensile force 438.80 Mpa with welding power 120 Ampere whereas welding most adaptable is on 80 Ampere 325.96 Mpa. The power force of welding determined to tensile force due electrode fluid completed and influenced to that lower carbon steel mechanical property.
To improve the productivity of this machining perhaps it may be recommended in a dry cutting but a dry cutting is recognized very sensitive to a high temperature. In this case, in order to overcome is perhaps required by using a tool carbide either in layers or without any layers whereby each layer has certain superior. There was conducted an experiment to have an optimum cutting on a carbon steel VCN-150 using a layers tool carbide and Respond Surface Method (RSM) with a CCD operation. The result of study recommended that condition optimum cutting shall be achieved (When cutting tc ) on a medium machining refers to ISO 3685 and medium surface roughness (Ra ) ISO 1320. Statistically, there is no found significant difference between a dry and wet cutting on optimum dry condition.
The purpose of research is to study the surface roughness of machining results obtained to give consideration that the possibility of dry machining can be realized at alloy steel machining of TEW 6582. In the field of surface texture only discuss the machined surface roughness with some testing that is processing and data analysis can be done statistically. The TEW 6582 alloy steel samples were produced from dry machining operations with 9 cutting forms using standard L 9 (34). In this case 3 variations of tool wear are determined by tool edge wear (VB) = 0.1 mm, 0.3 mm and 0.6 mm including also in wet machining. To cut the work piece used CNC machine, optical microscope and surface test . The roughness test was obtained the roughness value with dry machining for optimum cutting conditions ie HPK1.0.1 = 1,467 μm, HPK8,0.3 = 2,133 μm and HPK8,0.6 = 2,8 μm whereas value in wet machining was found with HPB1,0.1 = 1,581 μm, HPB8.0.3 = 2,304 μm and HPB8,0.6 = 2,906 μm. From the above machining results data, HPK8.06 can be determined as the most optimum cutting condition which can be concluded that dry machining gives better machining results roughness through Ravg value and no significant difference is obtained when compared to wet machining after statistically analyzed, so that dry machining is a good chance that can be realized in manufacturing and automotive industries.
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