Pendingin Welding Gun Pada Proses GTAW (Gas  Tungsten Arc Welding) dengan Metode Fuzzy Logic

Artikel ini menjelaskan tentang pendinginwelding gun untuk pengelasan GTAW. Pendinginwelding gun yang menggunakan sistem on-off masihkurang efektif dan efisien. Solusi yang ditawarkanmenggunakan sistem Kontrol fuzzy logic yangberfungsi untuk mengendalikan suhu kerja weldinggun dengan mengatur kecepatan putaran kipasradiator sesuai kebutuhan. Pada pendingin inimenggunakan dua kipas radiator sehingga dapatmemaksimalkan kinerja dari pendingin welding gun.Metode mamdani digunakan pada inferensi dan COAdigunakan pada defuzzifikasi Kontrol fuzzy logic,serta pada pengambilan data dilakukan dengan caramengamati setiap variabel (Suhu air masuk, dan suhuair keluar radiator) yang telah ditentukan denganmengumpulkan data dari waktu ke waktu secaraberkala untuk menggambarkan suatu perkembangandari sistem alat. Hasil yang didapatkan pada saatproses pengelasan GTAW berlangsung, pendinginbekerja pada range 35oC – 45oC. Hasil pengujiankontrol logika fuzzy mampu menstabilkan suhu yangmencapai set point ± 6,5 menit dengan error steadystate 2,44% dan hasil output logika fuzzy terhadaphasil output logika fuzzy di matlab dengan rata-rataerror 0,325 %

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Real-time multi-processing fuzzy logic adaptive control gas tungsten arc welding system

Proceedings of the 4th International Workshop on Parallel and Distributed Real-Time Systems ◽

10.1109/wpdrts.1996.557652 ◽

2002 ◽

Cited By ~ 3

Author(s):

M.A. Austin

Keyword(s):

Fuzzy Logic ◽

Adaptive Control ◽

Real Time ◽

Arc Welding ◽

Gas Tungsten Arc Welding ◽

Gas Tungsten Arc ◽

Gas Tungsten ◽

Welding System

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Arc Characteristics and Weld Bead Microstructure of Ti-6Al-4V Titanium Alloy in Ultra-high Frequency Pulse Gas Tungsten Arc Welding (UHFP-GTAW) Process

Materials Science ◽

10.5755/j01.ms.26.4.22329 ◽

2020 ◽

Vol 26 (4) ◽

pp. 426-431

Author(s):

Wei LI ◽

Gaochong LV ◽

Qiang WANG ◽

Songtao HUANG

Keyword(s):

Titanium Alloy ◽

Fusion Zone ◽

Arc Welding ◽

Gas Tungsten Arc Welding ◽

Weld Bead ◽

Gas Tungsten Arc ◽

Arc Characteristics ◽

Arc Pressure ◽

Gtaw Process ◽

Gas Tungsten

To resolve the problem of grain coarsening occurring in the fusion zone and the heat-affected zone during conventional gas tungsten arc welding(C-GTAW) welded titanium alloy, which severely restricts the improvement of weld mechanical properties, welding experiments on Ti-6Al-4V titanium alloy by adopting ultra-high frequency pulse gas tungsten arc welding (UHFP-GTAW) technique were carried out to study arc characteristics and weld bead microstructure. Combined with image processing technique, arc shapes during welding process were observed by high-speed camera. Meanwhile the average arc pressure under various welding parameters were obtained by adopting pressure measuring equipment with high-precision. In addition, the metallographic samples of the weld cross section were prepared for observing weld bead geometry and microstructure of the fusion zone. The experimental results show that, compared with C-GTAW, UHFP-GTAW process provides larger arc energy density and higher proportion of arc core region to the whole arc area. Moreover, UHFP-GTAW process has the obviously effect on grain refinement, which can decrease the grain size of the fusion zone. The results also revealed that a significant increase of arc pressure while increasing pulse frequency of UHFP-GTAW, which could improve the depth-to-width ratio of weld beads.

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