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Öğe Investigation of optimal MIG welding parameters and energy consumption for Invar alloys(Batman Üniversitesi, 2022-07-02) Adin, Mehmet ŞükrüInvar alloys are materials used in aviation and aerospace industries to make precision components and test equipment due to their excellent coefficient of thermal expansion. Therefore, the diversity of the joining methods of these materials and their joint strength have gained importance. In the presented study, the optimum welding parameters required for the minimum use of energy consumed during MIG welding of Invar alloy materials and for the joints to have the highest tensile strength were investigated. The lowest tensile strength was found to be 375 MPa at 15 mm/s welding speed and 6 mm/s wire feeding speed, and the highest tensile strength was 405 MPa at 20 mm/s welding speed and 18 mm/s wire feed. It has been understood that the power consumed for joining Invar alloy bars generally increases in direct proportion to the parameter increases up to 20 mm/s welding speed. It was observed that the lowest consumed power value was 1.61 kW with 15 mm/s welding speed and 6 mm/s wire feeding speed, while the highest consumed power value was 3.93 kW with 25mm/s welding speed and 18 mm/s wire feeding speed. It has been understood that an average of 38% energy savings can be achieved thanks to the optimum parameters obtained.Öğe Investigation of the most suitable drilling parameters and power consumption for energy saving(Batman Üniversitesi, 2022-07-02) Adin, Mehmet ŞükrüDue to the continuous increase in the cost of energy used in the manufacturing industry, the cost of the product is also increasing. Therefore, studies that do not affect product quality and save energy gain importance. For this purpose, in this study, the minimum amount of energy required to obtain the best hole surface quality was investigated by blind drilling of the AISI 4140 workpiece with a 5.2 mm diameter AISI M2 HSS drill at different spindle speeds (1000, 2000, 3000 rev/min) and different feed rates (150, 200, 250 mm/min). When the effects of drilling parameters on the surface roughness were examined, it was understood that it tended to decrease depending on the increase in the number of revolutions, and increased depending on the increase in the feed rate. It has been understood that the power required (consumed) of the CNC vertical machining center to open blind holes on the workpiece increases in direct proportion to the increase in cutting and feed rate. It was found that 3000 rpm and 150 mm/min feed rate were the most suitable machining parameters for the lowest surface roughness and the required optimum power value was 3.14 watts. As a result of the study, it has been understood that at least 11% energy saving can be achieved thanks to the determined parameters and optimum power value.Öğe Investigation of optimum friction welding parameters and energy consumption for Ramor 500 and AISI 420 steels(Batman Üniversitesi, 2022-07-02) Adin, Mehmet ŞükrüRamor steels are widely used materials in the defence and automotive industries due to their superior strength to high-speed impacts. However, many problems are encountered during the use of traditional fusion welds, which are applied to join these steel types with dissimilar metal materials. Therefore, in recent years, friction welding known as solid state welding method has attracted attention instead of traditional melting welding. In this experimental study, the effects of different welding parameters applied during friction welding of Ramor 500 and AISI 420 rod materials on the tensile strength of the joints were examined and the most suitable welding parameters were investigated. In addition, the optimum power requirement for energy saving has been examined. It was found that the lowest tensile strength was 575 MPa for 5 seconds friction time and 45 MPa friction pressure parameters, while the highest tensile strength was 633 MPa for 7 seconds friction time and 55 MPa friction pressure parameters. It was observed that the lowest consumed power was 1.44 kW at 5 seconds friction time and 45 MPa friction pressure, while the highest consumed power was 2.45 kW at 9 seconds friction time and 55 MPa friction pressure. Thanks to the obtained data, the optimum power requirement was determined and 10% energy saving was achieved.
